P139
P139
Feeder Management
Feeder Management
and Ba
and Bay Contr
y Control
ol
Version
Version -306
-306 -408/409/410
-408/409/410 -611
-611 ff
ff
Technical
Technical Data Sh
Data Sheet
eet
This document does not replace the Technical Manual. This document does not replace the Technical Manual.
Application and Scope
Application and Scope
MiCOM P139 is a cost-effective one-box solution MiCOM P139 is a cost-effective one-box solution for integrated numerical
for integrated numerical time-overcurretime-overcurrentnt protection and control.
protection and control.
The unit's protection functions provide selective The unit's protection functions provide selective short-circuit protection, ground fault protection and short-circuit protection, ground fault protection and overload protection in medium- and highvoltage overload protection in medium- and highvoltage systems. The systems can be
systems. The systems can be operated as solidly-operated as solidly-grounded, low-impedance-solidly-grounded, grounded, low-impedance-grounded, resonant-grounded or isolated-neutral systems. The grounded or isolated-neutral systems. The
multitude of protection functions incorporated into multitude of protection functions incorporated into the unit enable the user to cover a wide range of the unit enable the user to cover a wide range of applications in the protection of cable and line applications in the protection of cable and line sections, transformers and motors. For easy sections, transformers and motors. For easy adaptation to varying system operation conditions adaptation to varying system operation conditions four independent parameter subsets are provided. four independent parameter subsets are provided. The control functions are designed for the control The control functions are designed for the control of up to
of up to six electrically operated switchgear unitssix electrically operated switchgear units equipped with electrical check-back
equipped with electrical check-back signalingsignaling
located in the bay of
located in the bay of a medium-voltage substatioa medium-voltage substationn or a non-complex high-voltage station. For the or a non-complex high-voltage station. For the selection of the bay type the P139 is provided with selection of the bay type the P139 is provided with over 250 predefined bay types and allows
over 250 predefined bay types and allows download of customized bay type.
download of customized bay type.
External auxiliary devices are
External auxiliary devices are largely obviatedlargely obviated through the integration of binary inputs and power through the integration of binary inputs and power outputs that are
outputs that are independindependent of auxiliary ent of auxiliary voltages,voltages, by the direct connection option for current
by the direct connection option for current andand
voltage transformers and by the
voltage transformers and by the comprehenscomprehensiveive
interlocking capability. This simplifies handling of interlocking capability. This simplifies handling of the protection and control technology for a
the protection and control technology for a switchbay from planning to
switchbay from planning to commissionincommissioning.g. During operation, the user-friendly interface During operation, the user-friendly interface facilitates setting of the unit
facilitates setting of the unit and promotes safeand promotes safe operation of the substation by
operation of the substation by preventing non-preventing non-permissible switching
permissible switching operations.operations.
The P139 provides a extensive number of The P139 provides a extensive number of
protection and control functions which can select protection and control functions which can select individually for inclusion in
individually for inclusion in the unit's configurationthe unit's configuration or cancel them as desired. By
or cancel them as desired. By means of a straight-means of a straight-forward configuration procedure, the user can forward configuration procedure, the user can adapt the device flexibly to the
adapt the device flexibly to the scope of protectionscope of protection required in each particular application. Due to the required in each particular application. Due to the powerful, freely configurable logic of the device, powerful, freely configurable logic of the device, special applications can be
special applications can be accommodataccommodated.ed.
Functions
Functions overview overview P139P139
w/o VTs w/o VTs P139 P139 with VTs with VTs 50/51
50/51 P,Q,N P,Q,N DTOC DTOC Definite-time Definite-time o/c o/c protection, protection, three three stages, stages, phase-selectivephase-selective
51
51 P,Q,N P,Q,N IDMT_1 IDMT_1 Inverse-time Inverse-time o/c o/c protection, protection, single-stage, single-stage, phase-selectivephase-selective
51
51 P,Q,N P,Q,N IDMT_2 IDMT_2 Inverse-time Inverse-time o/c o/c protection, protection, single-stage, single-stage, phase-selectivephase-selective
67
67 P,N P,N SCDD SCDD Short-circuit Short-circuit direction direction determinationdetermination
50
50 SOTF SOTF Switch Switch onto onto fault fault protectionprotection
85
85 PSIG PSIG Protective Protective signalingsignaling
79
79 ARC ARC Auto-reclosure Auto-reclosure control control (3-pole)(3-pole)
25
25 ASC ASC Automatic Automatic synchronism synchronism checkcheck (())
67W/YN
67W/YN GFDSS GFDSS Ground Ground fault fault direction direction determination determination (wattmetric/neutral (wattmetric/neutral admittance)admittance)
TGFD
TGFD Transient Transient ground ground fault fault direction direction determinationdetermination (())
37/48/49/ 37/48/49/ 49LR/50S/66
49LR/50S/66 MPMP Motor protectionMotor protection
49
49 THERM THERM Thermal Thermal overload overload protectionprotection
46
46 I2> I2> Unbalance Unbalance protectionprotection
27/59/47 V<>
27/59/47 V<> Over/Undervoltage Over/Undervoltage protectionprotection
81
81 f<> f<> Over/Underfrequency Over/Underfrequency protectionprotection
32
32 P<> P<> Directional Directional power power protectionprotection
50BF
50BF CBF CBF Circuit Circuit breaker breaker failure failure protectionprotection
CBM
CBM Circuit Circuit breaker breaker monitoringmonitoring
MCMOM
MCMOM Measuring circuit Measuring circuit monitoringmonitoring
LIMIT
LIMIT Limit Limit value value monitoringmonitoring
LOGIC
LOGIC Programmable Programmable logiclogic
DEV
DEV Control and monitoring of up to 3 resp. up to 6 switchgear unitsControl and monitoring of up to 3 resp. up to 6 switchgear units respresp. (. ()) respresp. (. ())
CMD_1
CMD_1 Single-pole Single-pole commandscommands
SIG_1
SIG_1 Single-pole Single-pole signalssignals
ILOCK
ILOCK Interlocking Interlocking logiclogic
COUNT
COUNT Binary Binary counter counter
COMMx
COMMx 2 2 comm. comm. interfaces, interfaces, IRIG-B, IRIG-B, protection protection comm. comm. interface interface InterMiCOMInterMiCOM (()) (())
IEC IEC-61850-interface
IEC IEC-61850-interface (()) (())
MEASI/MEASO
In addition to the functions listed in figure 1, as well In addition to the functions listed in figure 1, as well as comprehensive selfmonitoring, the following as comprehensive selfmonitoring, the following global functions are available in the P139: global functions are available in the P139:
>
> Parameter subset selectionParameter subset selection
>
> Operating data recordingOperating data recording (time-tagged signal logging) (time-tagged signal logging)
>
> Overload data acquisitionOverload data acquisition
>
> Overload recordingOverload recording
(time-tagged signal logging) (time-tagged signal logging)
>
> Ground fault data acquisitionGround fault data acquisition
>
> Ground fault recordingGround fault recording (time-tagged signal logging) (time-tagged signal logging)
>
> Measured fault dataMeasured fault data
>
> Fault recordingFault recording
(time-tagged signal logging together with
(time-tagged signal logging together with faultfault
value recording of the three phase currents, the value recording of the three phase currents, the residual current, the three
residual current, the three phase-to-grouphase-to-groundnd voltages and the neutral displacement voltage). voltages and the neutral displacement voltage).
The P139 is of modular design. The pluggable The P139 is of modular design. The pluggable modules are housed in a robust aluminum case modules are housed in a robust aluminum case and electrically connected via an analog and a and electrically connected via an analog and a digital bus printed circuit board.
digital bus printed circuit board.
The P139 has the following inputs and outputs: The P139 has the following inputs and outputs:
>
> 4 current-measuring inputs4 current-measuring inputs
>
> 4 or 4 or 5 voltage-measuring inputs5 voltage-measuring inputs
>
> 8 or 14 8 or 14 additionaadditional output relays with l output relays with freelyfreely configurabl
configurable function e function assignment for individualassignment for individual control or
control or protection applicationsprotection applications
>
> 6 binary signal inputs (optical couplers) and 66 binary signal inputs (optical couplers) and 6 output relays for the control
output relays for the control of 3 switchgear of 3 switchgear units or
units or
>
> 12 binary signal inputs (optical couplers) and 1212 binary signal inputs (optical couplers) and 12 output relays for the control
output relays for the control of 6 switchgear of 6 switchgear units
units
>
> 4 or 8 or 28 additional binary signal inputs4 or 8 or 28 additional binary signal inputs (optical couplers) with freely
(optical couplers) with freely configurableconfigurable function assignment for individual control or function assignment for individual control or protection signals
protection signals
The maximum configuration of binary inputs
The maximum configuration of binary inputs andand
outputs provide the signaling of
outputs provide the signaling of 10 switchgear 10 switchgear units whereas 6 of them
units whereas 6 of them are controllable.are controllable. The nominal currents or the nominal voltages, The nominal currents or the nominal voltages, respectively, of the measuring inputs can be set respectively, of the measuring inputs can be set with the help of
with the help of function parameters.function parameters.
Optional current and voltage measuring inputs for Optional current and voltage measuring inputs for the connection to
the connection to non-convennon-conventional instrumenttional instrument transformers (NCIT) can be used.
transformers (NCIT) can be used.
I I V V V V ref ref 50/51 P,Q,N 50/51 P,Q,N DTOC DTOC 51 P,Q,N 51 P,Q,N IDMT_1
IDMT_1 MCMONMCMON 85 85 PSIG PSIG 27/59/47 27/59/47 V<> V<> 81 81 f<> f<> 49 49 THERM THERM 50 50 SOTF SOTF 67W/YN 67W/YN GFDSS GFDSS ILOCK ILOCK TGFD TGFD Metering Metering LOGIC LOGIC InterMiCOM InterMiCOM LIMIT LIMIT Overload rec. Overload rec. Ground flt. rec. Ground flt. rec. COMM2 COMM2 Communication Communication
to SCADA / substation control / RTU / modem ... to SCADA / substation control / RTU / modem ... via RS485 or Fibre Optics
via RS485 or Fibre Optics
using IEC 60870-5-101, -103, Modbus, DNP3, Courier using IEC 60870-5-101, -103, Modbus, DNP3, Courier resp.
resp.
via RJ45 or Fibre Optics usin via RJ45 or Fibre Optics using g IEC 61850IEC 61850
Recording Recording and and Data Data Acquisition Acquisition Self Self Monitoring Monitoring
Feeder Management and Feeder Management and
Bay
Bay Control Control Unit Unit P139P139
Fault rec.. Fault rec.. DEV DEV 50BF 50BF CBF CBF 46 46 I2> I2> 67 P,N 67 P,N SCDD SCDD 32 32 P<> P<> 25 25 ASC ASC 79 79 ARC ARC with with VT inputs VT inputs 37/48/49/50S/66 37/48/49/50S/66 MP MP Control/Monitoring of Control/Monitoring of up to 3 or optional up to 6 up to 3 or optional up to 6 switchgear units switchgear units further further opitons opitons always always available available COMM1 COMM1 COUNT
COUNT SIG_1SIG_1 CMD_1CMD_1 MEASIMEASI MEASOMEASO
IRIGB IRIGB IEC IEC CBM CBM 51 P,Q,N 51 P,Q,N IDMT_2 IDMT_2 Figure
The nominal voltage range of the optical coupler inputs is 24 to 250 V DC without internal switching. Optional there are also other ranges with higher pick-up thresholds possible.
The auxiliary voltage input for the power supply is a wide-range design as well. The nominal voltage ranges are 48 to 250 V DC and 100 to 230 V AC. An additional version is available for the lower nominal voltage range of 24 V DC.
All output relays are suitable for both signals and commands.
The optional resistance temperature detector (RTD) inputs are leadcompensated and balanced. The optional 0 to 20 mA input provides open-circuit and overload monitoring, zero suppression defined by a setting, plus the option of linearizing the input variable via 20 adjustable interpolation points. Two freely selected measured signals (cyclically updated measured operating data and stored measured fault data) can be output as a load-independent direct current via the two optional 0 to 20 mA outputs. The characteristics are defined via 3 adjustable interpolation points allowing a
minimum output current (4 mA, for example) for receiver-side open-circuit monitoring, knee-point definition for fine scaling and a limitation to lower nominal currents (10 mA, for example).
Control and display
> Local control panel with graphic LC-display (16
lines of 21 characters each with a resolution of 128 x 128 pixels)
> 17 LED indicators,
12 of which allow freely configurable function assignment
> PC interface
> Communication interfaces (optional)
> IRIG-B signal input (optional)
> Protection communication interface
InterMiCOM (optional)
Information interface
Information exchange is done via the local control panel, the PC interface and 2 optional
communication interfaces.
The first communication interface has settable protocols conforming to IEC 60870-5-103,
IEC 60870-5-101, DNP 3.0, Modbus and Courier (COMM1) or provides alternatively protocol
conforming to IEC 61850 (IEC). It’s intended for integration with substation control systems. The 2nd communication interface (COMM2) conforms to IEC 60870-5-103 and is intended for remote setting access only.
Additionally, the optional InterMiCOM interface (COMM 3) allows a direct transfer of any digital status information between two devices.
Clock synchronization can be achieved using one of the protocols or using the IRIG-B signal input.
Main Functions
Main functions are autonomous function groups and can be individually configured or disabled to suit a particular application. Function groups that are not required and have been disabled by the user are masked completely (except for the
configuration parameter) and functional support is withdrawn from such groups.
This concept permits an extensive scope of
functions and universal application of the device in a single design version, while at the same time providing for a clear and straight-forward setting procedure and adaptation to the protection and control task under consideration.
Control Functions
For the acquisition of switchgear positions, the P139 uses up to 20 binary inputs for the signaling of up to ten two-pole switching positions and up to twelve binary outputs for controling of up to six switchgears units. The acquisition of further binary inputs is in the form of single-pole operating
signals; they are processed in accordance with their significance for the substation (circuit breaker readiness, for example). For the setting of the debounce and chattering times, eight independent setting groups are available. These can be
assigned to the switching position signalling inputs and single-pole operating signals.
For the acquisition of a binary count, a binary input may be configured. In the event of loss of
operating voltage, the count is stored. Upon the following startup of the unit, counting is continued with the stored value as initial value.
The P139 issues switching command outputs with the integration of switching readiness and
permissibility tests; subsequently the P139 monitors the intermediate position times of the switchgear units. If a switchgear malfunction is detected, this fact will be indicated (e.g. by an appropriately configured LED indicator).
Before a switching command output is executed, the interlocking logic of the P139 will check
whether the new switchgear unit state corresponds to a permissible bay or substation topology. The interlocking logic is set out for each bay in the default setting as bay interlock with and without station interlock. By means of a straight-forward parameter setting procedure, the interlocking equations can be adapted to the prevailing bay and substation topology. The presentation and functioning of the interlocking system correspond to those of the programmable logic.
For integration of the P139 into an integrated control systems, the equations for the bay interlock with station interlock form the basis of interlock checking.
Without integration into the substation control system or with integration using IEC 61850, the bay interlock without station interlock is used in interlock checking; external ring feeders or signals received via IEC 61850 may be included in the interlocking logic.
If the bay or station topology (as applicable) is permissible then the switching command is issued. If a nonpermissible state would result from the switching operation then the switching command is rejected and a signal to this effect is issued. If the bay type does not require all binary outputs then the remaining outputs are available for free configuration. In addition to the switching
command output, a triggering of binary outputs by continuous commands is possible.
Definite-Time Overcurrent Protection
Definite-time overcurrent protection (DTOC) is provided for the three phase currents and the negative-sequence current with three timer stages and for the residual current with four timer stages. For the first three residual current stages the use of the residual current measured directly or
calculated from the three phase currents is offered for selection. For the fourth residual current stage -with extended setting range - the calculated
residual current is always used. The residual and negative-sequence currents stages affect the general starting signal. This effect can be suppressed if desired.
Starting of the phase current stage I> and the negative-sequence current stage Ineg> can be stabilized under inrush conditions if desired. The ratio of the second harmonic component of the phase currents to the fundamental wave serves as the criterion. This stabilization is either phase-selective or effective across all three phases depending on the chosen setting. The negative-sequence current stage Ineg> is subject to all phase current stabilizations. The phase current stages I>> and I>>> and the negative-sequence current stages Ineg>> and Ineg>>> are never affected by this stabilization procedure.
Intermittent startings of the residual current stage IN> can be accumulated over time by means of a settable hold time. If the accumulated starting times reach the trip limit value (which is also adjustable by setting) then a trip with selective signaling ensues.
Additionally, the operate values of all overcurrent stages can be set as dynamic parameters. For a settable hold time, switching to the dynamic
operate values can be done via an external signal. Once the hold time has elapsed, the static operate values are reinstated.
Inverse-Time Overcurrent Protection
For the inverse-time overcurrent protection the three phase currents, residual current and negative-sequence current determined from the filtered fundamental wave of the three phase currents are evaluated in separate, single stage measuring systems. For the residual current stage the use of the residual current measured directly or calculated from the three phase currents is offered for selection.
The effect on the general starting signal of the stages measuring in the residual path and in the negative-sequence system, respectively, can be suppressed if desired.
For the individual measuring systems, the user can select from a multitude of tripping characteristics
(see table “Tripping time characteristics ”). Starting
of the phase current stage and the negative-sequence current stage can be stabilized under inrush conditions if desired. The ratio of the second harmonic component of the phase currents to the fundamental wave serves as the criterion. This stabilization is either phase-selective or effective across all three phases depending on the chosen setting. The negative-sequence current stage is subject to all phase current stabilizations.
Intermittent startings of the phase, negative-sequence or residual current stage can be accumulated on the basis of the set tripping characteristic by means of a settable hold time. Tripping is also performed in accordance with the relevant tripping characteristic.
Additionally, the operate values of all overcurrent stages can be set as dynamic parameters. For a settable hold time, switching to the dynamic
operate values can be done via an external signal. Once the hold time has elapsed, the static operate values are reinstated.
Tripping Time characteristics
No. Tripping time characteristic Constants and formulae (t in s)
(k=0.01...10.00) a b c R 0 Definite Time Per IEC 255-3 1 Normally inverse 0.14 0.02 2 Very inverse 13.50 1.00 3 Extremely inverse 80.00 2.00
4 Long time inverse 120.00 1.00
Per ANSI/IEEE C37. 112 Trip Release
5 Moderately inverse 0.0515 0.0200 0.1140 4.85
6 Very inverse 19.6100 2.0000 0.4910 21.60
7 Extremely inverse 28.2000 2.0000 0.1217 29.10
PerANSI Trip Release
8 Normally inverse 8.9341 2.0938 0.17966 9.00
9 Short time inverse 0.2663 1.2969 0.03393 0.50
10 Long time inverse 5.6143 1.0000 2.18592 15.75
Not per standard 1 1 R I- ty pe in ve rs e
Not per standard
12 RXIDG-type inverse ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − ⋅ ⋅ = ref I I k t 5.8 1.35ln ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ ⋅ ⋅ = ref I I k t 236 . 0 339 . 0 1 ⎥ ⎥ ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎢ ⎢ ⎣ ⎡ + − ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ ⋅ = c I I a k t b ref 1 1 2 − ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ ⋅ = ref I I R k t k t = 1 − ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ ⋅ b ref I I a =k t
Short-Circuit Direction Determination
Due to the short-circuit direction determination function, the P139 can be used as a directional time-overcurrent protection device. For the individual overcurrent timer stages the user may select whether the stage shall be
forward-directional, backward-directional or non-directional. Direction determination is performed in separate measuring systems for the phase current and residual current timer stages, respectively. In the direction-measuring system for the phase current timer stages, the phase-to-phase voltage opposite to the selected phase current is used for direction determination as a function of the type of fault, and an optimum characteristic angle is
employed (see table “Directional characteristics in
short-circuit direction determination ”). A voltage memory is integrated to provide the required voltage data for direction determination in the event of 3-pole faults with a large 3-phase voltage drop.
In the direction measuring system for the residual current timer stages, direction is determined using the internally computed neutral displacement voltage; the characteristic angle is adjustable taking account of the various neutral-point
treatments in the system. The direction measuring system for the residual current timer stages is not enabled until a set value for neutral displacement voltage is exceeded. The user may select whether the triggering pre-orientation for a non-enabled direction measuring system for residual current timer stages shall be blocked in t he event of phase current starting.
Protective Signaling
Protective signaling can be used in conjunction with short-circuit direction determination. For this purpose the protection devices must be suitably connected by pilot wires or the optional protection interface InterMiCOM on both ends of the line section to be protected. The user may select whether teleprotection will be controlled by the direction measuring system of the phase current timer stages only, by the direction measuring
system of the residual current timer stages only, or by the direction measuring systems of the phase current and residual current timer stages. For protection devices on the infeed side of radial networks, teleprotection can also be controlled without the short-circuit direction determination function.
Protection Interface InterMiCOM
(optional)
InterMiCOM allows high performance permissive and blocking type unit protection to be configured, plus transfer of any digital status information between line ends. Intertripping is supported too, with channel health monitoring and cyclic
redundancy checks (CRC) on the received data for maximum message security.
InterMiCOM provides eight end-end signal bits, assignable to any function within a MiCOM relay’s programmable logic.
Default failsafe states can be set in case of channel outage.
Switch on to Fault Protection
Closing of a circuit breaker might inadvertently lead to a short-circuit fault due to a feeder grounding connection not yet removed, for example.
The manual close command is monitored for a settable period of time. During this period, an undelayed trip command may be issued
automatically on initialisation of the general starting (depending on the chosen operating mode).
Directional characteristics in short-circuit direction determination
Meas. system
Starting Variables selected for measurement Characteristic angleαP or αN P A IA VBC = VBN- VCN +45° B IB VCA = VCN- VAN +45° C IC VAB= VAN- VBN +45° A-B IA VBC= VBN- VCN +60° B-C IC VAB= VAN- VBN +30° C-A IC VAB= VAN- VBN +60° A-B-C IC VAB= VAN- VBN +45° I meas G GF IN VNG= -90°...+90° (adjustable) (reference var.) I meas V meas Backward decision Forward decision V meas 1/3 · (VAN+VBN+VCN)
Auto-Reclosing Control
The auto-reclosing control (ARC) operates in three-phase mode. ARC cycles with one high-speed reclosing (HSR) and multiple (up to nine) subsequent time-delay reclosing (TDR) may be configured by the user. Reclosing cycles without prior HSR are possible. For special applications, tripping prior to an HSR or TDR can be delayed. HSR and TDR reclosings are counted and
signaled separately. A test HSR can be triggered via any of the unit's interfaces.
Automatic Synchronism Check
(optional)
This function can be used in conjunction with
automatic or manual (re)closure or close command of the control functions. In non-radial networks this ensures that reclosure or close command will proceed only if the synchronism conditions are met.
For the control functions a second mode with a decoupled operation of the automatic synchronism check and close command is available.
Programmable Logic
User-configurable logic enables the user to set up logic operations on binary signals within a
framework of Boolean equations. By means of a straightforward configuration procedure, any of the signals of the protection device can be linked by logic 'OR' or 'AND' operations with the possibility of additional negation operations.
The output signal of an equation can be fed into a further, higher-order equation as an input signal thus leading to a set of interlinked Boolean equations.
The output signal of each equation is fed to a separate timer stage with two timer elements each and a choice of operating modes. Thus the output signal of each equation can be assigned a freely configurable time characteristic.
The two output signals of each equation can be configured to each available input signal. The user-configurable logic function is then able to influence the individual functions without external wiring (block, reset, trigger, for example).
Via non-storable continuous signals, monostable trigger signals and bistable stored setting/resetting signals, the Boolean equations can be controlled externally via any of the device's interfaces.
Circuit Breaker Failure Protection
With the trip command, two timer stages are started for circuit breaker action monitoring. If the current is still in excess of a set current threshold after the first timer stage has elapsed, a further trip command is issued. This could be used to trigger a second trip coil, for example.
Should the protection criterion continue to be met after the second timer stage has elapsed, a trip command is issued to a higher-level protection system.
If a 'circuit breaker failure' signal is received via an appropriately configured binary input while the general starting condition persists, a CBF trip signal is issued.
Circuit Breaker Monitoring
This function provides the user with several criteria for the assessment of circuit breaker wear:
> Calculated number of remaining operations
based on the CB wear curve
> Mechanical operations count
> Interrupted currents sum (linear and squared)
> Accumulated current-time integrals of trips
For each of these criteria, a signaling threshold can be set by the user.
1 0 10 0 100 0 1000 0 10000 0 0, 1 1 1 0 10 0 Tripping current [kA]
N u m b e r o f p e r m i s s i b l e C B o p e r a t i o n s
Figure 3: Circuit breaker wear curve
If the CBM function is blocked, the accumulated values and counts are frozen so that they remain unchanged by secondary protection testing.
The settings of the accumulated values and counts can be adjusted to allow for prior CB wear, CB servicing etc.
Over-/Underfrequency Protection
Over-/underfrequency protection has four stages. Each of these can be operated in one of the following modes:
> Over-/underfrequency monitoring
> Over-/underfrequency monitoring combined
with differential frequency gradient monitoring (df/dt) for system decoupling applications
> Over-/underfrequency monitoring combined
with medium frequency gradient monitoring
(
∆
f/∆
t) for load shedding applicationsOver-/Undervoltage Protection
The over-/undervoltage-time protection function evaluates the fundamental wave of the phase voltages and of the neutral displacement voltage as well as the positive-sequence voltage and negative-sequence voltage obtained from the fundamental wave of the three phase-to-ground voltages. Two definite-time-delay overvoltage stages each are provided for evaluation of the neutral displacement voltage and negative-sequence voltage. Two additional definite-time-delay undervoltage stages each are provided for evaluation of the phase voltages and the positive-sequence voltage. As an option, a minimum current level can be specified to enable the undervoltage stages.
Evaluation of the phase voltages can be performed using either the phase-to-phase voltages or the phase-to-ground voltages as desired. For evaluating the neutral displacement voltage, the user may choose between the neutral
displacement voltage formed internally from the three phase-to-ground voltages and the neutral displacement voltage formed externally (from the open delta winding of the voltage transformer, for example) via the fourth voltage measuring input.
Directional Power Protection
The directional power protection monitors exceeding the active and reactive power limit, a power drop and the reversal of direction at
unsymmetrically operated lines. Evaluation of the power is performed using the fundamental wave of the phase currents and of the phase-to-ground voltages.
Ground-Fault Direction Determination
For the determination of the ground-fault direction in isolated or Peterson-coil compensated power systems several proven methods are provided:
> Steady-state power or admittance evaluation
methods - complemented by signaling schemes and tripping logic
> Transient signal method (optional)
Ground Fault Direction Determination Using Steady-State Values
The ground fault direction is determined by evaluating the neutral displacement voltage and the residual current (from a core balance or window-type current transformer). The directional characteristic (cos
ϕ
or sinϕ
circuit) can be set to suit the neutral-point treatment (resonant-groundedor isolated-neutral). In the cos
ϕ
mode (for aresonant-grounded network), the adjustable sector angle also has an effect so that faulty direction decisions (resulting, for instance, from the phase angle error of the CT and VT) can be suppressed effectively. Operate sensitivity and sector angle can be set separately for the forward and
backward direction, respectively.
Either steady-state power or steady-state admittance can be selected for evaluation.
Alternatively, an evaluation based on current only can be performed. In this case, only the magnitude of the filtered neutral current is used as ground fault criterion.
Both procedures operate with either the filtered fundamental wave or the fifth harmonic component in accordance with the chosen setting.
Transient Ground Fault Direction Determination
(optional)
The ground fault direction is determined by evaluating the neutral displacement voltage
calculated from the three phase-to-ground voltages and the neutral current on the basis of the transient ground fault measuring procedure. The direction decision is latched. The user may select either manual or automatic resetting after a set time delay.
Motor Protection
For the protection of directly switched h.v. induction motors with thermally critical rotor, the following specially matched protection functions are provided:
> Recognition of operating mode
> Rotor overload protection using a thermal motor
replica
> Choice of reciprocally quadratic or logarithmic
tripping characteristic
> Inclusion of heat dispersion processes in the
rotor after several startups
> Separate cooling periods for rotating and
stopped motors
> Startup repetition monitoring with reclosure
blocking (see Figure 4)
> Control logic for heavy starting and protection of
locked rotor
> Loss of load protection
Using the optional resistance temperature detector inputs direct monitoring of the temperature of the stator windings and the bearings can be realized.
Unbalance Protection
The negative-sequence current is determined from the filtered fundamental wave of the three phase currents. The evaluation of the negative-sequence current is performed in two time-overcurrent stages with definite-time delay.
Thermal Overload Protection
Using this function, thermal overload protection for lines, transformers and stator windings of h.v. motors can be realized. The highest of the three phase currents serves to track a first-order thermal replica according to IEC 255-8. The tripping time is
determined by the set thermal time constant τ of
the protected object and the set tripping level
∆ϑ
tripand depends on the accumulated thermal load
∆ϑ
0: trip 2 ref 0 2 ref I I I I ln tϑ
∆
−
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
ϑ
∆
−
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
⋅
τ
=
The temperature ot the cooling medium can be taken into account in the thermical replica using the optional resistance temperature inputs or the 0 to 20 mA input.
The user has a choice of using a thermal replica on the basis of either relative or absolute
temperature.
A warning signal can be issued in accordance with
the set warning level
∆ϑ
warning.As an alternativemethod of generating a warning, the cyclically updated measured operating value of the predicted time remaining before tripping is monitored to check whether it is falling below a set threshold.
Measured Data Input
(optional)
The optional analog I/O module provides a 0 to 20 mA input for the acquisition of externally measured variables such as transducer outputs. The external input characteristics can be linearized via
adjustable interpolation points. This feature also provides for an adaptation of the range to, for example, 4 to 20 mA or 0 to 10 mA.
The optional RTD module offers the possibility of connecting up to 9 resistance temperature
detectors for direct temperature acquisition. Depending on the set operating mode, all the RTD's operate in parallel or the RTD's can be subdivided into regular inputs and reserve inputs which take over when the corresponding regular inputs fail.
The measured variables acquired by the analog measured data input function are monitored for exceeding or falling below set limits. Furthermore, they are used by thermal overload protection function for the acquisition of the coolant temperature. 100 80 60 40 20 0 m in % Overload memory t t 3 2 1
Permissible number of startups
three successive startups
1 1 8 8 8 e D S 4 Reclosure blocking
Figure 4: Overload memory and startup counter
Measured Data Output
The protection device provides the options of operating data output and fault data output. The user can select an output in BCD-coded form through relay contacts or an output in analog form as load-independent current (0 to 20 mA). For an output in BCD-coded form, an appropriate number of free output relays need to be available. For the current output, a special analog I/O module is required.
Measuring-Circuit Monitoring
Measuring-circuit monitoring includes the monitoring of the phase currents and phase-to-phase voltages.
Phase current monitoring is based on the principle of maximum allowable magnitude unbalance, whereby the arithmetic difference between the maximum and minimum phase currents - as referred to the maximum phase current - is compared to the set operate value. Even with an economy-type CT connection (CTs in only two phases) it is possible to monitor the phase currents given appropriate settings.
Phase-to-phase voltage monitoring is based on a plausibility check involving the phase currents. If a low current threshold setting is exceeded by at least one phase current, the three phase-to-phase voltages are monitored for a set minimum level. In addition to magnitude monitoring, phase sequence monitoring of the phase-to-phase voltages may be activated.
Limit Monitoring
The phase currents, the phase-to-ground voltages and the phase-to-phase voltages are monitored. For 3-phase sets, the highest and the lowest value is determined. Also the neutral displacement and the reference voltage, the temperatures of the resistance temperature detectors and the value of the linearised 0 to 20 mA input are monitored. The evaluations uses an operate value and time delay set by the user. Thereby, all values can be
monitored for exceeding an upper limit or falling below a lower limit.
Limit value monitoring is not a fast protection function and is intended to be used for monitoring and signaling purposes e.g. limit temperature monitoring.
Binary Count Input
For the acquisition of a binary count, one binary input may be configured. The contents of this counter (20 Hz) is transmitted cyclically via the serial link. In the event of loss of operating voltage, the count is stored. After a renewed startup of the unit, counting is continued with the stored value as initial value. Initial values could be set for the counter. R T D R T D R T D R T D R T D R T D R T D R T D RTD Phase A B C anbient temperature /RTD coolant temperature R T D R T D stator rotor bearing bearing RTD RTD Prime sensor Backup sensor
Global Functions
Functions operating globally allow the adaptation of the unit's interfaces to the protected power system, offer support during commissioning and testing and provide continuously updated
information on the operation, as well as valuable analysis results following events in the protected system.
Clock Synchronization
The device incorporates an internal clock with a resolution of 1ms. All events are time-tagged based on this clock, entered in the recording memory according to their significance and signaled via the communication interface.
Alternatively two external synchronization signals can be employed. Using one of the communication protocols Modbus, DNP3, IEC 60870-5-103,
IEC 60870-5-101 or IEC 61850, the device will be synchronized by a time telegram from a higher-level substation control system. Alternatively, it can be synchronized via the IRIG-B signal input. The user can select a primary and a backup source for synchronization. The internal clock will then be adjusted accordingly and operate with an accuracy of ±10 ms if synchronized via protocol and ±1ms if synchronized via IRIG-B signal.
Parameter Subset Selection
The function parameters for setting the protection functions are, to a large extent, stored in four independent parameter subsets. Switching
between these subsets is readily achieved via any of the device's interfaces.
Operating Data Recording
For the continuous recording of processes in system operation or of events, a non-volatile ring memory is provided. The relevant signals, each fully tagged with date and time at signal start and signal end, are entered in chronological sequence. Included are control actions such as the enabling or disabling of functions as well as local control triggering for testing and resetting. The onset and end of events in the network, as far as these represent a deviation from normal operation (overload, ground fault or short-circuit, for example) are recorded.
Overload Data Acquisition
Overload situations in the network represent a deviation from normal system operation and can be permitted for a brief period only. The overload protection functions enabled in the device
recognize overload situations in the system and provide for acquisition of overload data such as the magnitude of the overload current, the relative heating during the overload situation and its duration.
Overload Recording
While an overload condition persists in the network, the relevant signals, each fully tagged with date and time at signal start and signal end, are entered into a non-volatile memory in
chronological sequence. The measured overload data, fully tagged with the date and t ime of
acquisition, are also entered. Up to eight overload situations can be recorded. If more than eight overload situations occur without interim memory clearance then the oldest overload recording is overwritten.
Ground Fault Data Acquisition
While a ground fault in a network with isolated neutral or resonant grounding represents a system fault, it is usually nevertheless possible, in the first instance, to continue system operation without restrictions. The ground fault determination functions enabled in the protection device
recognize ground faults in the system and provide for the acquisition of the associated ground fault data such as the magnitude of the neutral
displacement voltage and the ground fault duration.
Ground Fault Recording
While a ground fault condition persists in the power system, the relevant signals, each fully tagged with date and time at signal start and signal end, are entered into a non-volatile memory in chronological sequence. The measured ground fault data, fully tagged with the date and time of acquisition, are also entered. Up to eight ground faults can be recorded. If more than eight ground faults occur without interim memory clearance then the oldest ground fault recording is overwritten.
Fault Data Acquisition
A short-circuit within the network is described as a fault. The short-circuit protection functions enabled in the devices recognize short-circuits within the system and trigger acquisition of the associated measured fault data such as the magnitude of the short-circuit current and the fault duration. As acquisition time, either the end of the fault or the start of the trip command can be specified by the user. Triggering via an external signal is also possible. The acquisition of the measured fault data is performed in the measuring loop selected by the protective device and provides impedances and reactances as well as current, voltage and angle values. The fault distance is determined from the measured short-circuit reactance and is read out with reference to the set 100% value of the protected line section. The fault location is output either with each general starting or only with a general starting accompanied by a trip (according to the user's choice).
Fault Recording
While a fault condition persists in the power
system, the relevant signals, each fully tagged with date and time at signal start and signal end, are entered into a non-volatile memory in chronological sequence. The measured fault data, fully tagged with the date and time of acquisition, are also entered. Furthermore, the sampled values of all analog input variables such as phase currents and neutral current, phase-to-ground voltages and neutral displacement voltage are recorded during a fault. Up to eight faults can be recorded. If more than eight faults occur without interim memory clearance then the oldest fault recording is overwritten.
Self-Monitoring
Comprehensive self-monitoring procedures within the devices ensure that internal hardware or software errors are detected and do not cause malfunctions of the device. As the auxiliary voltage is turned on, a functional test is carried out. Cyclic selfmonitoring tests are run during operation. If test results deviate from the default value then the corresponding signal is entered into the
non-volatile monitoring signal memory. The result of the fault diagnosis determines whether a blocking of the protection and control unit will occur or whether a warning only is issued.
1 4 2 3 7 6 5 8
Figure 6: Local Control Panel
Control
All data required for operation of the protection and control unit are entered from the integrated local control panel, and the data important for system management are read out there as well. The
following tasks can be handled via the local control panel:
> Control of switchgear units
> Readout and modification of settings
> Readout of cyclically updated measured
operating data and state signals
> Readout of operating data logs and of
monitoring signal logs
> Readout of event logs (after overload situations,
ground faults or short-circuits in the power system)
> Resetting of the unit and triggering of further
control functions designed to support testing and commissioning tasks
The front panel user interface, as shown in figure 6, comprises:
Operation
(1) The integrated local control panel has an
graphical back-lit LCD-Displaywith 16×21
alphanumerical characters (128×128 pixels), 17 LED indicators are provided for signal display. (2)5 LEDs are permanently assigned to signals
(3) The remaining12 LEDindicators are available
for free assignment by the user unless the selected bay type includes a fixed assignment for the indicators. The label strips provided with the unit can be exchanged for customized strips reflecting the user's assignments of the LED indicators.
Menu Tree
(4) By pressing thecursor keys and
guided by the LCD display, the user moves within a plain text menu. All setting parameters and measured variables as well as all local control functions are arranged in this menu which is standardized for all devices of this
range. Using theEnter Key settings of
parameters will be prepared and confirmed as well as control functions are carried out.
In the event of erroneous entries, exit from the enter mode with rejection of the entries is
possible at any time by means of the Clear
Key C . In case of an inactive edit mode the
display and the LED indicators are reseted by
means of the Clear Key. Pressing the Read
Key G a predefined parameter within the menu
tree will be displayed directly.
Switchgear Control
(5) The control of switchgear units from the local control panel can only be done via the Bay Panel.
Switchgear units can be controlled from the local control panel provided that the unit has been set to 'local control'. This setting may be
selected either via the password-protected
Local/Remote Key L/R or via an external key
switch.
Once the intended switchgear unit has been
selected with the help of the Selection Key ,
the switchgear unit may then be controlled via theClose Key I or Open Key O . Pressing
thePage Key results in leaving the display of the bay or the menu tree and switching to the Panel display mode. The panel type being displayed may be switched by pressing the Page Key consecutively. From the Panel display, the user can return to the menu tree display at any time by pressing the Enter Key.
Device Identification, Ports
(6) An upper cover identifying the product name. The cover may be raised to provide access to the product model number, serial number and ratings.
(7) A lower cover concealing the RS232 front port to connect a personel computer.
(8) To guard the lower cover against unauthorized opening it is provided with a facility for fitting a security lead seal.
Password Protection
Display Panels
With the help of the Display Panels, the user is able to carry out a quick and up-to-date check of the state of the bay. The device provides the following Display Panels:
> Bay Panel(s)
> Measured Value Panels (Operation Panel,
Overload Panel, Ground Fault Panel, Fault Panel)
> Signal Panel(s)
> Event Panel
On theBay Panelthe selected bay is displayed
as a single-pole equivalent network (single line diagram) with the updated switchgear states. This panel is always displayed following startup or after a defined period of time after the most recent local control action. Moreover, ancillary information such as the position of the
remote/local switch, the operating state of the interlock functions and (optionally) a measured value are displayed as text and bar displays. For bigger customised bay types the displaying of the bay can be split at up to 8 Bay panels.
Up to 28 status signals are displayed on the
Signal Panelswhich are activated automatically upon status changes. Moreover, presentation modes for the display of status data and status change information can be selected.
Selected measured values are displayed on the
Measured Value Panels. The type of measured values shown (such as measured operating data or measured fault values) will depend on the prevailing conditions in the substation. Priority increases from normal operation to operation under overload conditions, operation during a ground fault and finally to operation following a short-circuit in the system. The measured value sequence in the Measured Value Panel is user-configurable.
TheEvent Panel displays the most recent events such as the opening of a switchgear unit. A list presentation of the operating data recording complete with time-tagging is displayed.
G Menu tree Global Main functions Parameter subset 1 Parameter subset ... Control
Measured operating data Physical state signals Logical state signals
Events
Event counters Measured fault data
Event recordings Device type Parameters Device ID Config. parameters Function parameters Operation Cyclic measurements Control and Testing
Operating data rec. Gerätetyp Parameter Kennwerte Konfigurationsparameter Betrieb Zyklische W erte Bedienung und Prüfung
Signals 17:58:44 Signals 17:58:44 P139 Page C 17:58:34
P139 Page B 17:58:34
Signal Panel(s) Event Panel
Bay Panel(s)
Control and Display Panels Measured Value Panels
Events 17:58:54 20.04.98
05:21:32.331
23:58:17.501 CB closed sig. EXT End 21.04.98 ↑↓ ARC MAIN Enabled Start 05 :21 :32 .33 1 D EV0 1 Switch.device closed Start Meas. values 17:58:44 ↑↓
Voltage A-B prim. 20.7 kV Voltage B-C prim.
20.6 kV Voltage C-A prim.
20.8 kV Current A prim. 416 A Current B prim. 415 A Current C prim. 417 A Signals 17:58:44 MAIN : M.C.B. trip V EXT PSS : PS 1 active PSS : PS 2 active MAIN :
Bay interlock. act. MAIN :
Subst. interl. act. P139 Page A 17:58:34 BB1 BB2 Locked Remote 1088 A Curr. IP,max prim.
Q0 Q8 Q1 Q2
20.04.98
Mechanical Design
The device is supplied in two case designs.
> Surface-mounting case
> Flush-mounting case
With both case versions, connection is via
threaded terminal ends with the option of either pin or ring-terminal connection.
Two 40T flush-mounting cases can be combined to form a complete 19" mounting rack.
Figure 8 shows the modular hardware structure of the device.
The plug-in modules may be combined to suit the individual requirements. The components fitted in an individual unit can be determined from the type identification label on the front panel of the unit.
Transformer Module T
The transformer module converts the measured current and voltage variables to the internal processing levels and provides for electrical isolation. Alternatively a NCIT module for a connection to non-conventional instrument transformer is provided.
Processor Module P
The processor module performs the analog/digital conversion of the measured variables as well as all digital processing tasks.
Transient Ground Fault Evaluation Module N
The optional transient ground fault module
evaluates the measured variables according to the transient ground fault evaluation scheme.
Local Control Module L
The local control module encompasses all control and display elements as well as a PC interface for running the operating program S1. The local
control module is located behind the front panel and connected to the processor module via a ribbon cable. ,
Communication Module A
The optional communication modules provide one or two serial communication interfaces for the integration of the protection and control unit into a substation control system and for remote access respectively a protection communication interface for the transfer of digital information between two protection devices. The communication module with serial communication interface(s) is plugged into the processor module.
Bus Modules B
Bus modules are printed circuit boards (PCBs) without any active components. They provide the electrical connection between the other modules. Two types of bus modules are used, namely the analog and the digital bus PCB.
Binary I/O Modules X
The binary I/O modules are equipped with optical couplers for binary signal input as well as output relays for the output of signals and commands or combinations of these.
Y V
X T
Control / Signals / Analogue Signals / Commands Aux.Voltage
Currents / Voltages
µ
POperating-(PC-)Port Communication Ports
P L A N
µ
C G GC G G G G G TRIP ALARM OUT OFSERVICE HEALTHY EDIT MODE O I L/R MiCOM BAnalog Modules Y
Der optional RTD module is fitted with 9 resistance temperature detector inputs. The optional analog module is fitted with a resistance temperature detector input, a 20 mA input and two 20 mA outputs. One output relay each is assigned to the two 20 mA outputs. Additionally four optical coupler inputs are available.
Power Supply Module V
The power supply module ensures the electrical isolation of the device as well as providing the power supply. Depending on the chosen design version, optical coupler inputs and output relays are provided in addition.
Theidentificationof the modules fitted in the device is carried out by the device itself. During each startup of the device, the number and type of fitted modules are established by interrogation via the digital bus, the admissibility of the set of fitted components is checked and appropriate
configuration parameters - in accordance with the fitted set of modules - are released for application. The device identification values additionally read out by the device provide information on the type, variant and design version of each individual module.
Technical Data
General Data
Design
Surface-mounting case suitable for wall installa-tion or flush-mounting case for 19" cabinets and for control panels
Installation Position Vertical ± 30°
Degree of Protection
Per DIN VDE 0470 and EN 60529 or IEC 529. IP 52; IP 20 for the rear connection area of the flush-mounting case. Weight Case 40T: approx. 7 kg Case 84T: approx. 11 kg Dimensions See Dimensions
Terminal Connection Diagrams See Locations and Connections Terminals
PC Interface
DIN 41652 connector (X6), type D-Sub, 9-pin.
Communication Interfaces COMM1 to COMM3 Optical plastic fibers (X7, X8 and X31, X32):
F-SMA-interface per IEC 60874-2 per plastic fiber or
BFOC-(ST®)-interface 2.5 per IEC 60874-10-1 per glass fiber
or
Leads (X9, X10, X33):
Threaded terminal ends M2 for wire cross
sections up to 1.5 mm2
or (Only for InterMiCOM) RS 232 (X34):
DIN 41652 connector, Type D-Sub, 9 pin.
Communication Interface IEC 61850 Optical plastic fibers (X7, X8):
BFOC-(ST®)-interface 2.5 per IEC 60874-10-1 per glass fiber
or
optical plastic fibers (X13):
SC-interface per IEC60874-14-4 per glass fiber and
Leads (X12):
RJ45 connector per ISO/IEC 8877 IRIG-B Interface (X11)
BNC plug
Current-Measuring Inputs (conventional) Threaded terminals for pin-terminal connection:
Threaded terminal ends M5,
self-centering with wire protection for
conductor cross sections of ≤ 4 mm2
or
Threaded terminals M4 for ring-terminal connection Current/Voltage-Measuring Inputs (NCIT) DIN 41652 connector and socket,
Type D-Sub, 9 pin.
Other Inputs and Outputs
Threaded terminals for pin-terminal connection: Threaded terminal ends M3,
self-centering with wire protection for
conductor cross sections of 0.2 to 2.5 mm2
or
Threaded terminals M4 for ring-terminal connection Creepage Distances and Clearances Per EN 61010-1 and IEC 664-1
Pollution degree 3, working voltage 250 V, overvoltage category III, impulse test voltage 5 kV
Tests
Type Test
Tests according to EN 60255-6 or IEC 255-6 EMC
Interference Suppression
Per EN 55022 or IEC CISPR 22, Class A 1 MHz Burst Disturbance Test
Per IEC 255 Part 22-1 or IEC 60255-22-1, Class III, Common-mode test voltage: 2.5 kV,
Differential test voltage: 1.0 kV,
Test duration: > 2 s, Source impedance: 200 Ω
Immunity to Electrostatic Discharge
Per EN 60255-22-2 or IEC 60255-22-2, Level 3, Contact discharge, single discharges: > 10, Holding time: > 5 s, Test voltage: 6 kV,
Test generator: 50 to 100 MΩ, 150 pF / 330 Ω
Immunity to Radiated Electromagnetic Energy Per EN 61000-4-3 and ENV 50204, Level 3, Antenna distance to tested device:
> 1 m on all sides,
Test field strength, frequ. band 80 to 1000 MHz: 10 V/m,
Test using AM: 1 kHz / 80%,
Single test at 900 MHz: AM 200 Hz / 100%
Electrical Fast Transient or Burst Requirements Per IEC 60255-22-4, Test severity Level 4,
Rise time of one pulse: 5 ns,
Impulse duration (50% value): 50 ns, Amplitude: 4 kV / 2 kV, resp.,
Burst duration: 15 ms, Burst period: 300 ms,
Burst frequency: 2.5 kHz, Source impedance: 50Ω
Surge Immunity Test
Per EN 61000-4-5 or IEC 61000-4-5, Level 4, Testing of power supply circuits,
unsymmetrically/ symmetrically operated lines, Open-circuit voltage front time/time to half-value:
1.2 / 50 µs,
Short-circuit current front time/time to half-value: 8 / 20 µs,
Amplitude: 4 / 2 kV, Pulse frequency: > 5/min,
Source impedance: 12 / 42Ω
Immunity to Conducted Disturbances Induced by Radio Frequency Fields
Per EN 61000-4-6 or IEC 61000-4-6, Level 3, Disturbing test voltage: 10 V
Power Frequency Magnetic Field Immunity Per EN 61000-4-8 or IEC 61000-4-8 , Level 4, Frequency: 50 Hz, Test field strength: 30 A/m
Alternating Component (Ripple) in DC Auxiliary Energizing Quantity
Per IEC 255-11, 12 % Insulation
Voltage Test
Per IEC 255-5 or EN 61010, 2 kV AC, 60 s
For the voltage test of the power supply inputs, direct voltage (2.8 kV DC) must be used. The PC interface and the NCIT inputs must not be subjected to the voltage test.
Impulse Voltage Withstand Test Per IEC 255-5,
Front time: 1.2 µs, Time to half-value: 50 µs,
Peak value: 5 kV, Source impedance: 500Ω
Mechanical Robustness Vibration Test
Per EN 60255-21-1 or IEC 255-21-1, Test severity class 1, Frequency range in operation:
10 to 60 Hz, 0.035 mm, 60 to 150 Hz, 0.5 g, Frequency range during transport:
10 to 150 Hz, 1 g
Shock Response and Withstand Test, Bump Test Per EN 60255-21-2 or IEC 255-21-2, Test severity class 1, Acceleration: 5 g/15 g, Pulse duration: 11 ms
Seismic Test
Per EN 60255-21-3 or IEC 255-21-3, Test procedure A, Class 1, Frequency range: 5 to 8 Hz, 3.5 mm / 1.5 mm 8 to 35 Hz, 10/5 m/s2, 3 x 1 cycle Routine Test
Tests per EN 60255-6 or IEC 255-6 Voltage Test
Per IEC 255-5, 2.2 kV AC, 1 s
For the voltage test of the power supply inputs, direct voltage (2.8 kV DC) must be used. The PC interface and the NCIT inputs must not be subjected to the voltage test.
Additional Thermal Test
100% controlled thermal endurance test, inputs loaded
Environmental Conditions
Ambient Temperature Range Recommended temperature range: -5°C to +55°C or +23°F to +131°F Limit temperature range:
-25°C to +70°C or -13°F to +158°F Ambient Humidity Range
≤75 % relative humidity (annual mean),
up to 56 days at≤ 95% relative humidity and 40 °C,
condensation not permissible Solar Radiation
Ratings
Measurement Inputs
Nominal frequencyf nom: 50 and 60 Hz (settable)
Operating range: 0.95 to 1.05 f nom
Over-/Underfrequency Protection: 40...70 Hz Current
Conventional inputs:
Nominal current Inom: 1 and 5 A (settable)
Nominal consumption per phase: < 0.1 VA at I nom
Load rating:
continuous 4 I nom
for 10 s: 30I nom
for 1 s; 100I nom
Nominal surge current: 250I nom
or NCIT inputs: Per IEC 60044-8, Voltage level: 22.5 mV on 50 A. Voltage Conventional inputs:
Nominal voltageV nom: 50 to 130 V AC (settable)
Nominal consumption per phase:
< 0.3 VA atV nom= 130 V AC
Load rating: continuous 150 V AC or
NCIT inputs: Per IEC 60044-7,
Voltage level: 3.25 V /√3 onV nom prim./√3.
Binary Signal Inputs
Max. permissible voltage: 300 V DC
Switching threshold (as per order option) Standard variant: 18V (VA,nom: 24 ... 250 V DC):
Switching threshold range 14 V ... 19 V DC Special variant with switching thresholds from
58 ... 72 % of the nominal supply voltage (VA,nom)
(definitively "low" at VA< 58 % of the nominal supply voltage,
definitively "high" at VA> 72 % of the nominal supply voltage):
"Special variant 73 V": nominal supply voltage 110 V DC "Special variant 90 V": nominal supply voltage 127 V DC "Special variant 146 V": nominal supply voltage 220 V DC "Special variant 155 V": nominal supply voltage 250 V DC Power Consumption (as per order option):
Standard variant:
VA= 19...110V DC : 0,5 W +/-30%
VA> 110V DC : VA∗5 mA +/- 30 %
Special variants:
VA> switching threshold: VA∗5mA +/-30 %
Output Relays
Rated voltage: 250 V DC, 250 V AC Continuous current:
Output relays of binary I/O module X (6I/6O) for control of switchgear units: 8 A
Output relays of other modules: 5 A Short-duration current: 30 A for 0.5 s
Making capacity: 1000 W (VA) at L/R = 40 ms Breaking capacity:
0.2 A at 220 V DC and L/R = 40 ms
4 A at 230 V AC and cos ϕ= 0.4
Binary Count Input
Maximum frequency of 20 Hz with a pulse/interpulse ratio of 1:1 Analog Inputs and Outputs
Direct Current Input Input current: 0 to 26 mA
Value range: 0.00 to 1.20I DC,nom(I DC,nom= 20 mA)
Maximum permissible continuous current: 50 mA Maximum permissible input voltage: 17 V
Input load: 100Ω
Open-circuit monitoring: 0 to 10 mA (adjustable) Overload monitoring: > 24.8 mA
Zero suppression: 0.000 to 0.200I DC,nom(adjustable)
Resistance Temperature detector: For analog module only Pt100 permitted,
for RTD module Pt100, Ni100 or Ni120 permitted Value range: -40 to +215°C
(equivalent to -40 to +419°F)
3-wire configuration: max. 20Ωper conductor.
Open and short-circuited input permitted. Open-circuit monitoring:
Θ> +215°C (or Θ> +419°F) andΘ< -40°C (or Θ< -40°F)
Direct Current Output Output current: 0 to 20 mA
Maximum permissible load: 500Ω
Maximum output voltage: 15 V Power Supply
Nominal Auxiliary Voltage
V A,nom: 48 to 250 V DC and 100 to 230 V AC or V A,nom: 24 V DC (depends on ordering)
Operating Range
for direct voltage: 0.8 to 1.1V A,nom
with a residual ripple of up to 12 % of V A,nom
for alternating voltage: 0.9 to 1.1 V A,nom
Nominal Consumption
atV A= 220 V DC and maximum number of modules fitted:
in case 40TE:
Initial position approx.: 12.6 W Active position approx.: 34.1 W in case 84TE:
Initial position approx.: 14.5 W Active position approx.: 42.3 W Start-Up Peak Current
< 3 A, duration 0.25 ms Stored-Energy Time
PC Interface
Transmission rate: 300 to 115,200 baud (settable) Communication Interface COMM1 to COMM3 Communication interface COMM1:
Protocol can be switched between
IEC 60870-5-103, IEC 870-5-101, Modbus, DNP 3.0, Courier Transmission speed: 300 to 64000 bit/s (settable)
Communication interface COMM2: Protocol per IEC 60870-5-103
Transmission speed: 300 to 57600 bit/s (settable) Protection interface COMM3:
InterMiCOM, asynchronous, full duplex
Transmission speed: 600 to 19200 bit/s (settable) Wire Leads
Per RS 485 or RS 422, 2kV-isolation, Distance to be bridged:
peer-to-peer link: max. 1200 m multi-endpoint link: max. 100 m Plastic Fiber Connection Optical wavelength: typ. 660 nm Optical output: min. -7.5 dBm Optical sensitivity: min. -20 dBm Optical input: max. -5 dBm
Distance to be bridged: max. 45 m1)
Glass Fiber Connection G 50/125 Optical wavelength: typ. 820 nm Optical output: min. -19.8 dBm Optical sensitivity: min. -24 dBm Optical input: max. -10 dBm
Distance to be bridged: max. 400 m1)
Glass Fiber Connection G 62,5/125 Optical wavelength: typ. 820 nm Optical output: min. -16 dBm Optical sensitivity: min. -24 dBm Optical input: max. -10 dBm
Distance to be bridged: max. 1400 m1)
Communication Interface IEC 61850 Ethernet based communication per IEC 61850 Wire Leads
RJ45, 1.5kV-isolation,
Transmission rate: 10 resp. 100 Mbit/s Distance to be bridged: max. 100 m Optical Fiber (10 Mbit/s)
ST-interface
Optical wavelength: typ. 850 nm For glass fiber G50/125
Optical output: min. –18.8 dBm Optical sensitivity: min. –32.5 dBm Optical input: max. -12 dBm For glass fiber G62.5/125
Optical output: min. -15 dBm Optical sensitivity: min. –32.5 dBm Optical input: max. -12 dBm Optical Fiber (100 Mbit/s) SC-interface
Optical wavelength: typ. 1300 nm For glass fiber G50/125
Optical output: min. –23.5 dBm Optical sensitivity: min. -31 dBm Optical input: max. -14 dBm For glass fiber G62.5/125
Optical output: min. -20 dBm Optical sensitivity: min. -31 dBm Optical input: max. -14 dBm IRIG-B Interface
Format B122, Amplitude modulated, 1 kHz carrier signal, BCD time-of-year code
