BETA Measuring Three-Phase Measuring Devices

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Siemens ET B1 · 10/2008

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11/2 Product overview 11/3 7KT1 30 multimeters 11/8 7KT1 31, 7KT1 34, 7KT1 35 multicounters 11/16 7KT1 39 LAN couplers 11/19 7KT1 5 E-counters 11/23 7KT1 1 E-counters instabus KNX 11/27 7KT1 2 current transformers 11/28 7KT9 0 measuring selector switches

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Overview

Devices Page Field of application Standards Used in

Non-re sident ial buildin g s Re side nti a l buildin g s In du st ry

7KT1 30 multimeters 11/3 Display of 23 electrical measured values for switchgear assemblies, infeed or outgoing feeders.

Easy commissioning due to fault detection if connected incorrectly. IEC 60051-2, EN 60051-2 IEC 61010-1, EN 61010-1 (VDE 0411 T 1) ✓ -- ✓ 7KT1 31, 7KT1 34, 7KT1 35 multicounters

11/8 Display of 35 electrical measured values

and consumption values in switchgear assemblies, infeed or outgoing feeders. Easy commissioning due to fault detection if connected incorrectly.

Transmission of measured values over PROFIBUS DP, Modbus RTU or LAN.

IEC 60051-2, EN 60051-2 IEC 61010-1, EN 61010-1 (VDE 0411 T 1) IEC 62053-21, EN 62053-21 (VDE 0418 T 3-21) ✓ -- ✓

7KT1 39 LAN couplers 11/16 Up-to-date consumption data of the multicounter and E-counter available worldwide over LAN data communication. Microsoft Excel operator interface. Signaling of limit violations with time stamp.

IEEE 802 ✓ -- ✓

7KT1 5 E-counters 11/19 Measurement of consumption data and plant capacity utilization in three-phase systems of system components, offices or holiday apartments.

Transmission of measured values over LAN using LAN couplers.

IEC 61010-1, EN 61010-1 (VDE 0411 T 1) IEC 62053-11, EN 62053-11 (VDE 0418 T 3-11) IEC 62053-21, EN 62053-21 (VDE 0418 T 3-21) ✓ ✓ ✓

7KT1 1 E-counters instabus KNX 11/23 Measurement of consumption data and plant capacity utilization in three-phase systems of system components, offices or holiday apartments.

Transmission of measured values over instabusKNX interface

IEC 61036 EN 61036 (VDE 0418 T7)

✓ -- ✓

7KT1 2 current transformers 11/27 Straight-through transformers for installation in distribution boards and non-contact measuring of primary currents.

Ideal for combining with switch disconnectors, multimeters, multicounters and E-counters.

IEC 60044-1, EN 60044-1 (VDE 0414 T 44-1)

✓ -- ✓

7KT9 0 measuring selector switches

11/28 For switching over the phases for

voltmeters and ammeters

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7KT1 30 multimeters

11/3

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Overview

Multimeters are mainly used in power distribution boards for infeeds into buildings and plants. They replace the more com-mon analog voltmeters and ammeters with measuring point changeover, as well as measuring devices for power outputs and power factor p.f.

The standard measured quantity to be indicated in the 5 display fields of the multimeter can be tailored to customer requirements. Versions for direct connection 63 A or for transformers /5 A with adjustable transformer primary current from 5 to 5000 A support a wide range of applications.

The green 7-segment displays for the measured values and the orange indicators of the units of measurement directly alongside the measured values make for easy reading.

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Benefits

• Clear display of all necessary measured values • All measured values can be read from a distance

• Customized setting of the measured quantities for the standard display

• Wide range of applications thanks to flexible adaptation to measuring current transformers

• Detection of connection errors during commissioning saves considerable time when trying to locate faults

• Large, 11 mm high, green 7-segment displays for measured values makes for easy reading

• Indication of units of measurement directly alongside the related measured values provide a clear overview.

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Technical specifications

7KT1 300 7KT1 301 7KT1 302 Standards DIN 43751-1, DIN 43751-2 and EN 61010-1

Supply

• Rated control supply voltage U_c V AC 230

• Operating range ×U_c 0.8 ... 1.2

• Rated frequency Hz 50

• Frequency range Hz 45 ... 65

• Rated power dissipation Pv VA ≤10

Overload capability

• Voltage Continuous: phase/phase V 480

1 second: phase/phase V 800 Continuous: phase/N V 276 1 second: phase/N V 460 • Current Continuous A 76 6 0.5 s A -- 110 10 ms A 1000 --Measuring inputs

• Connection type Direct Transformer /5 A

• Voltage Ue Phase/phase V 400

Phase/N V 230

• Operating range voltage Phase/phase V 87 ... 400

Phase/N V 50 ... 230

• Current I_e A 63 5

• Operating range current A 0.1 ... 63 0.01 ... 5

• Transformer current Primary current of the transformer A -- 5 ... 5000

Smallest input step A -- 5

• Frequency Hz 50

• Frequency ranges Hz 45 ... 65

Display

• Connection errors Inverted phases Err

• Voltage: 3 displays, 3-digit Delta L1 – L2, L2 – L3, L3 – L1 V 87 ... 480

Star L1/N – L2/N – L3/N V 50 ... 276

Voltage > 480/276 V H H H

Voltage < 87/50 V – – –

• Current: 3 displays, 3-digit L1 – L2 – L3 0.3 ... 76 A 0.1 A ... 1.2 kA

For current > 76 A or

6 A × transformer conversion ratio

H H H For current < 0.1 A or

0.01 A × transformer conversion ratio

O O O

• Frequency: 1 display, 3-digit ΣL Hz 45.0 ... 65.0

• Active power: 3 displays, 3-digit or 1 display, 3 of 7 digits

L1 – L2 – L3, ΣL

Display with floating decimal point

W, kW or MW

0 ... 999

• Reactive power: 1 display, 3-digit ΣL, with capacitive or inductive indication;

display with floating decimal point

var, kvar or Mvar

0 ... 999 • Apparent power: 3 displays, 3-digit or

1 display, 3-digit

L1 – L2 – L3, ΣL

W, kW or MW 0 ... 999 • p.f.: 3 displays, 3-digit or 1 display, 3-digit L1 – L2 – L3, ΣL

0.01 ... 1.00

• Transformer primary current Only if set A -- 5 ... 5000

• Transformer secondary current Only if set A -- 5

• Display period /s 2

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Selection and ordering data

Measuring accuracy • Voltage % 2 • Current % 2 • Power % 4 • p.f. % 4 • Frequency % 2 Safety acc. to EN 61010-1 • Degree of pollution 2 • Overvoltage category II

• Operating voltage category V 600

• Clearances mm ≥3.0

• Creepage distances In device mm ≥4.3

On printed boards (not installed) mm ≥3.0

• Test pulse voltage 1.2/50μs kV 4

• Test voltage 50 Hz, 1 min kV 2.2

Terminals

• Main current paths ± screw (Pozidriv) 2 1

• Supply terminals Blade for slotted screw mm × mm 0.4 × 2.5

• Conductor cross-sections, main current paths

Rigid, maximum mm2 1 × 25 or 2 × 16 1 × 6 or

2 × 4

Rigid, minimum mm2 1 × 1.5

• Conductor cross-sections for supply terminals

Rigid, maximum mm2 1 × 2.5 or

2 × 1.5

Flexible, with end sleeve, minimum mm2 1 × 0.75

Ambient conditions

• Temperature °C 0 ... +55

• Relative humidity % ≤80

• Vibrations Sinus amplitude at 50 Hz mm ±0.25

• Degree of protection Acc. to EN 60529 IP20, with connected conductors

- Front panel, 96 mm × 96 mm -- IP54

• Safety class Acc. to EN 61010-1 II

7KT1 300 7KT1 301 7KT1 302

Ue Ie Uc MW DT Order No. Price

per PU PG PU PS*/ P. unit Weight per PU approx. V AC A AC V DC Unit(s) Unit(s) kg Multimeters

For the display of 23 electrical values, of which 5 values can be continuously displayed.

7KT1 300

Standard rail mounting

For direct connection

3 × 230/400 63 230 6 B 7KT1 300 027 1 1 0.400

For transformer connection 5 ... 5000 A, in 5 A increments, secondary current 5 A

3 × 230/400 Trans-formers /5

230 6 B 7KT1 301 027 1 1 0.380

7KT1 302

Front-panel mounting

For transformer connection 5 ... 5000 A, in 5 A increments, secondary current 5 A, mounting dimensions 96 mm × 96 mm

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7KT1 30 multimeters

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Dimensional drawings 7KT1 300 7KT1 301 7KT1 302 Rear panel 6 44 64 45 I2_11333a 90 108 N N 2 3 L1 L1 L2 L2 L3 L3 6 44 64 45 I2_11334a 90 108 L2 L3 L1 N k1 l1 k2 I2 k3 I3 2 3 8 9 ,5 5 5 9 9 7 9 7 3 2 k 1 l 1 k 2 l 2 k 3 l 3 L 2 L 1 L 3 N I 2 _ 1 1 6 1 0 a

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Schematics

Instructions for the connection of transformer counters In the case of cross-section reduction, a short-circuit resistant cable is required for the power supply of terminal 2, depending on the fusing for phases L1, L2, L3. A fuse of 6 A is recommended for the line protection.

Current transformers must not be operated with open terminals as this can result in dangerously high voltages, which may result in personal injuries and property damage. It can also lead to a thermal overload of the transformers.

2 3 I2_11424a L1 L2 L3 L1 L1 L2 L2 L3 L3 N N 63 A 63 A 63 A L1 N L1 L1 L2 L2 L3 L3 N N 63 A L1 L2 L3 L1 L1 L2 L2 L3 L3 N N N 63 A 63 A 63 A 7KT1 300 L N 63 A 63 A 400 V AC

Direct connection 63 A, 3-wire circuit

230 V AC

Direct connection 63 A, single-phase 230/400 V AC

Direct connection 63 A, 4-wire circuit 230 V AC 7KT1 301 L N 7KT1 302 L1 L2 L3 6 A I2_11425b 2 3 k1 L1 l1 k2 L2 l2 k3 L3 l3 N N N K l L k 6 A L1 N k1 L1 l1 k2 L2 l2 k3 L3 l3 N N N K l L k K l L k K l L k 6 A 6 A 6 A L1 L2 L3 N k1 L1 l1 k2 L2 l2 k3 L3 l3 N N N K l L k K l L k K l L k 6 A 6 A 230 V AC 400 V AC

Current transformer connection, 3-wire circuit

230 V AC

Current transformer connection, single-phase 230/400 V AC

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7KT1 30 multimeters

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More information Voltage measurement

The multimeter measures the delta voltages L1 against L2; L2 against L3 and L3 against L1 or the star voltages L1, L2, L3 against N.

ΣL symbol for the 3-phase system

This indicates that all physical units shown under this symbol are always 3 phase.

Readout data

You can continuously display 5 measured quantities from the fol-lowing 23 options.

Display

The multimeters have a covered, brightly lit LED display. The measured values are indicated on an 11 mm high, green, 7-segment LED, the physical units are indicated by orange text abbreviations. Both colors are easier to recognize than the red LEDs used for conventional displays. Capacitive loads are automatically indicated by a capacitor symbol, inductive loads by a coil symbol – also in orange.

Matrix selection

Conventional measuring instruments display voltages, currents, powers, etc. in a rigid sequence on several "screens".

These multimeters allow users to define their own standard for measured quantities per display field, so that they can be implemented far more universally and flexibly.

A special feature is the analysis of the different loads on the phases. Phase displacement and unsymmetrical or unbalanced loads can cause partial overloads. These multimeters offer a range of different options for combining and assessing measured values.

The display fields are selected using rotary pushbuttons and the desired indications confirmed with OK. By making the horizontal selection e.g. W, V, A or p.f., and the vertical selection, e.g. L1, L1 – L2 or ΣL, users can then define the desired measured quantities for this display field.

The vertical data on the display can be assigned to any measured value in the horizontal data. The letters M(ega) and k(ilo) are automatically assigned according to measuring range, i.e. measured value, e.g. kW or MW. Capacitive loads are

automatically indicated by a capacitor, inductive loads by a coil. The following diagram shows an example of what your matrix selection might look like.

No. Measured value Display Unit Assignment

1 Active power D1 W L1 2 Voltage D1 V L1 3 Current D1 A L1 4 Apparent power D1 VA L1 5 p.f. D1 p.f. L1 6 Voltage D1 V L1 – L2 7 Active power D2 W L2 8 Voltage D2 V L2 9 Current D2 A L2 10 Apparent power D2 VA L2 11 p.f. D2 p.f. L2 12 Voltage D2 V L2 – L3 13 Active power D3 W L3 14 Voltage D3 V L3 15 Current D3 A L3 16 Apparent power D3 VA L3 17 p.f. D3 p.f. L3 18 Voltage D3 V L3 – L1 19 Active power D1, D2, D3, D5 W ΣL 20 Apparent power D1, D2, D3, D5 VA ΣL

21 Reactive power D5 var ΣL

22 Frequency D4 Hz ΣL

23 p.f. D1, D2, D3, D4 p.f. ΣL

2 set values are also indicated:

24 Transformer setting D5 CT/A /5

25 Transformer setting CT/A 5 ... 5000

l1 L1-N L1-L2 L1 L2 L3 L3-L1 l2 l3 L3-N L2-N N L2-L3 I2_08410b 1 2 3 I2_11614a OK M k W V A M k W V A M k W V A L L1 D1 D2 D3 D5 D4 L1-2 L L2 L2-3 L L3 L3-1 L M k W V A R CT/A H Z p. f. p. f. p. f. p. f. I2_10803a L1 k W A L2 L3 OK k W k W L p. f.

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Overview

Multicounters are mainly used in power distribution boards for infeeds into buildings and plants. They replace the more common analog voltmeters and ammeters with measuring point changeover, as well as measuring devices for power outputs and power factor p.f.

The standard measured quantity to be indicated in the 6 display fields of the multicounter can be tailored to customer requirements. The measured values of all measured quantities can also be displayed quickly and easily over the operator buttons. Versions for direct connection 63 A or for transformers /5 A with adjustable transformer primary current from 5 to 5000 A support a wide range of applications.

The green 7-segment displays for the measured values and the orange indicators of the units of measurement directly alongside the measured values make for easy reading.

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Benefits

• Clear display of all necessary measured values • All measured values can be read from a distance

• Customized setting of the measured quantities for the standard display. Fast display of all measured quantities over operator buttons

• Wide range of applications thanks to flexible adaptation to measuring current transformers

• Detection of incorrect connections during installation • Communication with LAN, Modbus or PROFIBUS DP enables

integration in an energy management system

• Software package for data transmission over LAN and visualization of measurement data with Microsoft EXCEL enables implementation of customized solutions.

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7KT1 31, 7KT1 34, 7KT1 35 multicounters

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Multicounters without communication interface 7KT1 310 7KT1 311 7KT1 312

Multicounters with RS485 interface (Modbus RTU, for LAN couplers) 7KT1 340 7KT1 341 7KT1 342

Multicounters with PROFIBUS DP V0 interface 7KT1 350 7KT1 351 7KT1 352

Standards EN 61010-1, EN 62053-21, -23, -31

Supply

• Rated control supply voltage U_c V AC 230

• Operating range ×U_c 0.8 ... 1.2

• Rated power dissipation P_v VA ≤10

• Voltage Continuous: phase/phase V 480

1 second: phase/phase V 800 Continuous: phase/N V 276 1 second: phase/N V 460 • Current Continuous A 76 6 0.5 s A -- 110 10 ms A 2000 --Measuring inputs

Phase/N V 230

- Operating range voltage Phase/phase V 87 ... 480

Phase/N V 50 ... 276

- Operating range current A 0.3 ... 63 0.012 ... 5

• Transformer current Primary current of the transformer A -- 5 ... 5000

• Frequency Hz 50

- Operating frequency range Hz 45 ... 65

Display

• Connection errors Inverted phases Err

• Voltage: 3 displays, 3-digit Delta L1 – L2, L2 – L3, L3 – L1 V AC 87 ... 480

Star L1/N – L2/N – L3/N V AC 50 ... 276

Voltage > 480/276 V H H H

Voltage < 87/50 V L L L

• Current: L1 – L2 – L3 – N-conductor 0.3 ... 76 A 0.1 A ... 1.2 kA or

0.1 ... 6 A

× transformer conversion ratio For current > 76 A or 6 A

× transformer conversion ratio

H H H For current < 0.3 A or 0.012 A

× transformer conversion ratio

O O O

• Frequency: 1 display, 3-digit ∑L Hz 45.0 ... 65.0

• Active power: 3 displays, 3-digit L1 – L2 – L3,

W, kW or MW

0 ... 999 • Active power: 3 3 display, 3-digit,

3 of 7 digits + display Import or export

∑L,

W, kW or MW

0 ... 999

• Reactive power: 1 display, 3 of 7 digits + capacitive or inductive load

∑L,

var, kvar or Mvar

0 ... 999

• Apparent power: 3 displays, 3-digit L1 – L2 – L3, ∑L

VA, kVA or MV

0 ... 999 • Apparent power: 5 displays, 3-digit,

adjustable

∑L,

VA, kVA or MV

0 ... 999 • Active energy: 1 display,

7-digit display Import or export, + display rate 1 or 2

∑L,

Wh, kWh or MW

0 ... 9999999 or 0 ... 999

• Reactive energy: 1 indicator, 7-digit + capacitive or inductive load

∑L,

varh, kvarh or Mvarh

0 ... 9999999 or 0 ... 999 • Apparent energy: 5 displays, 3-digit,

adjustable rate

∑L,

VAh, kVAh or MVh

0 ... 9999999 or 0 ... 999

• p.f.: 3 displays, 3-digit L1 – L2 – L3,

0.01 ... 1.00 • p.f.: 4 displays, 3-digit,

adjustable

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Display (contd.)

• Transformer primary current Only if set A -- 5 ... 5000

• Transformer secondary current Only if set A -- 5

• Storage of setting and energy values EEPROM

S0 interfaces Acc. to IEC 62053-31 Class A

• Terminal output For direct connection 63 A, adjustable Imp/kWh 10 – 1 – 0.1 – 0.01

– 0.001

--Depending on the transformer factor,

adjustable

Imp/kWh -- 10 – 1 – 0.1 – 0.01 – 0.001

• Pulse duration ms 125 ... 300

• Minimum interval between 2 pulses ms 300

• Required voltage V DC 5 ... 30 • Current ON/OFF mA 10 ... 27/0 ... 2 Measuring accuracy • Voltage % 1 • Current % 1 • Power outputs % 2

• Active energy Acc. to IEC 62053-21 Class 2

• Reactive energy Acc. to IEC 62053-23 Class 2

• p.f. % 2

• Frequency % 1

Safety acc. to EN 61010-1

• Degree of pollution 2

• Overvoltage category II

• Clearances mm ≥3.0

Terminals

• Supply and control terminals Blade for slotted screw mm × mm 0.4 × 2.5

• Conductor cross-sections, main current paths

Rigid, maximum mm2 1 × 25 or 2 × 16 1 × 6 or 2 × 4 Rigid, minimum mm2 1 × 1.5 • Conductor cross-sections Supply and control terminals

Rigid, maximum mm2 1 × 6 or

2 × 4

Flexible, with end sleeve, minimum mm2 _{1 × 0.75}

• Relative humidity % ≤80

• Vibrations Sinus amplitude at 50 Hz mm ±0.25

- Front panel, 96 mm × 96 mm -- IP54

Multicounters without communication interface 7KT1 310 7KT1 311 7KT1 312

Multicounters with RS485 interface (Modbus RTU, for LAN couplers) 7KT1 340 7KT1 341 7KT1 342

Multicounters with PROFIBUS DP V0 interface 7KT1 350 7KT1 351 7KT1 352

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7KT1 31, 7KT1 34, 7KT1 35 multicounters

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* You can order this quantity or a multiple thereof.

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per PU PG PU PS*/ P. unit Weight per PU approx. V AC A AC V DC Unit(s) Unit(s) kg Multicounters

For the display of 35 electrical values, of which 5 or 6 values can be continuously displayed. For 3-phase, 3/4-wire connection,

with S0 interface

Without communication interface

7KT1 310

Standard rail mounting

3 × 230/400 63 230 6 B 7KT1 310 027 1 1 0.420

230 6 B 7KT1 311 027 1 1 0.410

7KT1 312

230 -- B 7KT1 312 027 1 1 0.410

With RS485 interface and RTU Modbus protocol or for connection to LAN networks

over 7KT1 390 LAN coupler Standard rail mounting

3 × 230/400 63 230 6 B 7KT1 340 027 1 1 0.470

230 6 B 7KT1 341 027 1 1 0.423

230 -- B 7KT1 342 027 1 1 0.397

With PROFIBUS DP V0 interface Standard rail mounting

3 × 230/400 63 230 6 B 7KT1 350 027 1 1 0.415

230 6 B 7KT1 351 027 1 1 0.415

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Dimensional drawings

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Schematics

S0 interfaces

The S0 interface is a current interface for pulse transmission between a counter with integral pulse generator device and tariff rate device.

The tariff rate device is connected to the S0 interface of the counter over a 2-wire conductor and – acting as a passive electrical two-pole – supplies the pulse generator with a direct voltage.

The following diagram shows the dependency of the current path on the time according to DIN 43864.

The following diagram shows the pulse output (S0 interface) for a 2-tariff counter:

e.g. tariff 1 −> normal tariff, tariff 2 −> special tariff.

For pulse recording with devices from other manufacturers (pulse counters or digital inputs), a voltage within the range of 5 ... 30 V DC must be applied to the output terminals of the S0 interface. The optocoupler operates as the switch. In order to prevent overloading, the current must not exceed a max. of 20 mA.

The pulse duration is 125 ms. The minimum pulse interval is also 125 ms.

Grounding terminal

The interpolation point grounding terminals, required for the transmission technology, only serve to shield the transmission cables and do not have a protective function.

Instructions for the connection of transformer counters In the case of cross-section reduction, a short-circuit resistant cable is required for the power supply of terminals 2, 5 and 8, depending on the fusing for phases L1, L2, L3. A fuse of 6 A is recommended for the line protection.

Current transformers must not be operated with open terminals as this can result in dangerously high voltages, which may result in personal injuries and property damage. It can also lead to a thermal overload of the transformers.

7KT1 3.0 7KT1 3.1 7KT1 3.2 Rear panel 6 44 64 45 90 I2_1 141 1 a 1 108 2 3 L2 L1 L2 L3 L3 L1 N N 4 6 7 8 9 10 11 12 6 44 64 45 90 I2_1 1412a 1 108 2 3 L2 L1 L3 k1 N 4 6 7 8 9 10 11 12 l1 k2 l2 k3 l3 89,5 5 59 97 97 1 2 3 4 5 6 7 8 9 10 11 12 k1 l1 k2 l2 k3 l3 L2 L1 L3 N I2_11514a U I I2_12239a

U: Voltage at terminals of tariff device

I: Current via counter with integrated pulse generator

Counter with integrated pulse generator Tariff device tA ≤ 5 ms 0,9 I 0,5 I 0,1 I I2_12267a t1 ≥ 30 ms tF ≤ 5 ms t2 ≥ 30 ms tA = Rise time tF = Fall time t1 = Pulse duration t2 = Pulse interval Off On 7 8 9 L N N L 2 3 4 5 +–+ I2_12268a 1 2 230 V AC Tariff Tariff 2 x S0 interface 2 x 5...30 V DC

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7KT1 31, 7KT1 34, 7KT1 35 multicounters

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I2_11426c L1 L2 L3 L1 L1 L2 L2 L3 L3 N N 63 A 63 A 63 A L1 N L1 L1 L2 L2 L3 L3 N N 63 A L1 L2 L3 L1 L1 L2 L2 L3 L3 N N N 63 A 63 A 2 3 4 5 7KT1 310 7 8 9 L N +–+ 1 2 3 4 5 6 + _ 7KT1 340 L N N L 1 2 3 4 5 7KT1 350 L N N L RS 485 - PROFIBUS 63 A N L PT kWh T1 LAN couplers Shielding Tariff Tariff Tariff 230 V AC 230 V AC 230 V AC 230 V AC 230 V AC 230/400 V AC

400 V AC

230 V AC

Direct connection 63 A, single-phase kWh T2 2 x 5...30 V DC I2_11427b 7KT1 351 L N N L 7KT1 352 7 8 9 7KT1 311 L N N L 7KT1 312 7KT1 341 L N N L 7KT1 342 L1 L2 L3 6 A RS 485 - PROFIBUS k1 L1 l1 k2 L2 l2 k3 L3 l3 N N N K l L k 6 A L1 N k1 L1 l1 k2 L2 l2 k3 L3 l3 N N N K l L k K l L k K l L k 6 A 6 A 6 A L1 L2 L3 N k1 L1 l1 k2 L2 l2 k3 L3 l3 N N N K l L k K l L k K l L k 6 A 6 A 1 2 3 4 5 2 3 4 5 +–+ +_ 1 2 3 4 5 6 PT 230/400 V AC

Current transformer connection, 4-wire circuit

230 V AC

Current transformer connection, single-phase 400 V AC

Current transformer connection, 3-wire circuit 230 V AC 230 V AC 230 V AC 230 V AC 230 V AC 230 V AC Shielding LAN couplers Tariff Tariff Tariff 2 x 5...30 V DC kWh T1 kWh T2

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More information

Communication interfaces

Multicounters with PROFIBUS interface

Multicounters are also available with PROFIBUS interface. In a PROFIBUS network, the multicounters act as PROFIBUS DP slave according to the usual standard V0 (cyclic communication only).

In a PROFIBUS network, several PROFIBUS slaves are always assigned to a single master. A PC with a PROFIBUS communication module or PLC, such as the PLCs of the SIMATIC range from Siemens, can be used as the master. The master communicates with the connected slaves cyclically at extremely brief intervals. The master sends the slaves a request message to which the slave replies with a response message. The communication frame of the message (e.g. number of send and receive bytes) is slave-specific and is defined in a standardized text file; the device data base file (DDBF). This DDBF file is read in by the software configuration tools of the various PROFIBUS masters, whereby the master knows which communication frame the respective slave requires.

In normal cyclic mode, the multicounter sends a response message in the specified communication frame in reply to the request message from the master. This communication frame contains all 35 measured quantities in encoded form as user data. The master receives the message, decodes it and then uses the measurement data for a range of tasks.

As well as the DDBF file, a detailed description of the communication and the configuration of the user data are also required for the configuration and implementation of a PROFIBUS network with multicounters. For more information please visit us on the Internet at: http://www.siemens.com/beta

Multicounters with Modbus interface

The Modbus RTU is a very common communications solution. It is a serial, asynchronous form of communication, which requires RS 485 networks as the hardware platform. RS 485 networks can be set up with 2-wire copper or optical fiber cables and, compared to the RS 232 serial interface, offer fast transmission rates. In a Modbus network, each bus station has a bus address within the range from 1 to 255. All stations within a network must be set to the same transmission rate. We recommend transmission speeds of 9600 or 19200 bit/s. The address and transmission speed can be set in the user menu of the multicounters. In order to customize a Modbus installation, it is necessary to implement the appropriate software application for the master. This requires specific information about communication with multicounters. For more information please visit us on the Internet at:

http://www.siemens.com/beta

Multicounters with LAN coupler on LAN

The 7KT1 390 LAN couplers support connection of up to ten 7KT1 34 multicounters to a LAN network. The LAN couplers and multicounters are interlinked over an RS 485 network. Setting the bus address in the 7KT1 34 multicounters to "0" specifies that it is operating in "LAN" mode. It is not necessary to set the transmission speed, as a fixed transmission rate is always used in this mode. It is also not necessary to set the address of the bus stations, as the LAN coupler automatically detects and identifies the multicounter connected.

The server components run on the PC in the background and handle the data transmission and storage of the most recent measured values from all the multicounters connected over one or more LAN couplers.

For more information on LAN operation and the MS Excel operator interface, see 7KT1 390 LAN couplers on page 11/16 ff. Voltage measurement

Depending on the selected connection type, the multicounter measures the delta voltages L1 against L2; L2 against L3 and L3 against L1 or the star voltages L1, L2, L3 against N.

ΣL symbol for the 3-phase system

This indicates that all physical units shown under this symbol are always 3-phase.

Temperature

The temperature indication of the multicounter is not suitable for an exact measurement of the ambient temperature. The device does not have a temperature sensor. It is also not possible to connect an external temperature sensor.

The temperature information merely enables a rough estimate of the temperature conditions in the device interior and immediate surroundings. l1 L1-N L1-L2 L1 L2 L3 L3-L1 l2 l3 L3-N L2-N N L2-L3 I2_08410b 1 2 3

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7KT1 31, 7KT1 34, 7KT1 35 multicounters

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Readout data

You can continuously display 6 measured quantities from the fol-lowing 35 options.

All the measured values are transmitted via LAN.

Display

The multicounters have a covered, brightly lit LED display. The measured values are indicated on an 11 mm high, green, 7-segment LED, the physical units are indicated by orange text abbreviations. Both colors are easier to recognize than the red LEDs used for conventional displays. Capacitive loads are automatically indicated by a capacitor symbol, inductive loads by a coil symbol – also in orange.

Matrix selection

Conventional measuring instruments display voltages, currents, powers, etc. in a rigid sequence on several "screens". These multicounters allow users to define their own standard for measured quantities per display field, thus allowing more universal and flexible application.

A special feature is the analysis of the different loads on the phases. Phase displacement and unsymmetrical or unbalanced loads can cause partial overloads. In this case, the multicounter offers a range of different options to combine measured values and assess them.

The display fields are selected using rotary pushbuttons and the desired indications confirmed with OK. By making the horizontal selection e.g. W, V, A or p.f., and the vertical selection, e.g. L1, L1 – L2 or ΣL, users can then define the desired measured quantities for this display field.

The vertical data on the display can be assigned to any measured value in the horizontal data. The letters M(ega) and k(ilo) are autom. assigned according to measuring range, i.e. measured value, e.g. kW or MW. Capacitive loads areautomatically indicated by a capacitor, inductive loads by a coil.

The following diagram shows an example of what your matrix selection might look like.

No. Measured value Display Unit Assignment

1 Active power D1 W L1 2 Voltage D1 V L1 3 Current D1 A L1 4 Apparent power D1 VA L1 5 p.f. D1 p.f. L1 6 Voltage D1 V L1 – L2 7 Active power D2 W L2 8 Voltage D2 V L2 9 Current D2 A L2 10 Apparent power D2 VA L2 11 p.f. D2 p.f. L2 12 Voltage D2 V L2 – L3 13 Active power D3 W L3 14 Voltage D3 V L3 15 Current D3 A L3 16 Apparent power D3 VA L3 17 p.f. D3 p.f. L3 18 Voltage D3 V L3 – L1 19 Temperature D6 °C – 20 Current, N-conductor D6 A ∑L 21 Active power D4 W ∑L

22 Reactive power D5 var ∑L

23 Apparent power D5 var ∑L

24 Frequency D6 Hz ∑L

25 p.f. D1, D2, D3, D6 p.f. ∑L

26 Active energy rate 1 D4 Wh ∑L →

27 Active energy rate 2 D4 Wh ∑L →

28 Active energy rate 1 D4 Wh ∑L ←

29 Active energy rate 2 D4 Wh ∑L ←

30 Reactive energy rate 1 D5 varh ∑L, ind.

31 Reactive energy rate 2 D5 varh ∑L, ind.

32 Reactive energy rate 1 D5 varh ∑L, cap.

33 Reactive energy rate 2 D5 varh ∑L, cap.

34 Apparent energy rate 1 D5 VAh ∑L

35 Apparent energy rate 2 D5 VAh ∑L

2 set values are also indicated:

36 Transformer setting D4 CT/A /5

37 Transformer setting D5 CT/A 5 ... 5000

I2_11615a OK M k W V A HZ L L1 L1-2 L L2 L2-3 L L3 L3-1 L M k CT/A V A R h M k W h T 1 2 L N °C M k W V A M k W V A M k W V A D1 D2 D3 D6 D4 p. f. p. f. p. f. p. f. D5 or D5 + D4 I2_10799a V V V L3 -1 L2 -3 L1 -2 OK A N T 2 L k W h

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11 ■

Overview

A LAN coupler supports the worldwide data recall of up to 10 multicounters and E-counters over a LAN link to the Internet. The LAN coupler is used in conjunction with multicounters and E-counters. Up to 10 devices can be linked with a LAN coupler. In turn, the LAN coupler is connected to a LAN.

Data communication between the LAN coupler and the PC is implemented using the TCP/IP protocol.

The supplied software can be used to call up the measurement data over LAN coupler and transfer it to a PC. The measurement data are constantly stored as a text file with a time and date stamp. This allows users to create flexible designs to their own specific solutions (e.g. data can be prepared using MS Excel).

■

Benefits

• Integration of measuring devices in industrial or office communication

• Display of measurement data using the standard software MS Excel

• Use of existing local networks (LAN) for transmitting the measurement data

• TCP/IP data protocol enables a wide range of applications • Limit value signals with time information for all measured

values increases your plant's safety

• Open software structure enables the implementation of customized solutions for measured data indication and analysis

• Worldwide communication of the measured values via LAN • One LAN coupler for 10 devices

■

7KT1 390

Standards EN 61010-1

Supply

• Rated control supply voltage Uc V AC 230

• Operating range ×Uc 0.8 ... 1.2

Function

• System start Automatic when the control supply voltage is switched on

• LAN coupler identification Over the IP address

• Device identification By means of the device number

• Transmission rate Mbit/s 100

RS 485 interface for connection of measuring devices

• Line Version STP (shielded twisted pair)

- Minimum cross-section mm2 _{2 × 0.2/AWG 24}

- Maximum line capacity pF/m < 50

- Impedance W 100

- Maximum overall cable length m 1800

- Type of installation Parallel connection

Safety acc. to EN 61010-1

• Degree of pollution 2

• Overvoltage category II

• Material II

• Clearances mm ≥3

• Creepage distances

- In device mm ≥4.3

- On printed boards, not installed mm ≥3

Terminals ± screw (Pozidriv) 1 • Conductor cross-sections

- Rigid, maximum mm2 1 × 2.5 or 2 × 1.5

- Flexible, with end sleeve, minimum mm2 _{1 × 0.75}

• Ambient temperature In operation °C 0 ... +55

• Relative humidity In operation % ≤80

• Vibration Sinus amplitude at 50 Hz mm ± 0.25

Software requirements for PCs

• Operating system MS Windows 2000, Windows XP or Windows Vista

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7KT1 39 LAN couplers

11/17

11 ■

■

Schematics

Connecting the devices to the LAN coupler

All the devices are connected in parallel with a shielded two-wire cable. Point-to-point installations, junctions or ring installations are not possible.

Grounding potential

Both the LAN cable with the RJ45 connector and the shielded cable of the RS 485 bus system must be grounded. This also applies to the devices connected to the LAN coupler.

Uc MW DT Order No. Price

per PU PG PU PS*/ P. unit Weight per PU approx. V AC Unit(s) Unit(s) kg LAN couplers

For connection of up to 10 devices over RS485 Software tools included for:

• Installation and commissioning • Data transmission and storage

• MS Excel macro for visualization of measurement data

230 4 B 7KT1 390 027 1 1 0.232 7KT1 390 123 72 6 29 44 64 45 64 90 I2_1 1313b 9 8 7 10 RJ45 L N 1 2 3 7 8 RT D+ D-9 10 I2_1 1414c RJ45 RS 485 230 V AC With shield I2_11596b Device 10 Device 1 Device 2 7KT1 390 LAN coupler

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11 ■

More information

Connection of the LAN coupler to a LAN

Each station in a LAN must be assigned its own IP address. On delivery, or after a reset, the LAN coupler has a standard IP address. The new IP address must be set in the LAN coupler during commissioning. To do this, the LAN coupler must be directly connected to a PC using a so-called "cross-over" cable. This is a network cable in which the transmit and receive wires are cross-connected. This creates a small LAN with 2 stations, PC and LAN coupler can communicate with each other directly. The supplied LAN coupler configuration tool must be installed on the PC. This direct connection can then be used to set a new IP address in the LAN coupler, as well as other network parameters, such as subnet mask and default gateway. The LAN coupler must then be connected to the target system as communication is subsequently only possible with the new settings.

Connection of measuring devices to the LAN coupler E-counters and multicounters are connected to the

LAN couplers over their communication interface. The network is an RS 485 network in which devices are connected over a shielded 2-wire cable. When using Modbus, the device address and transmission rate must be set in the multicounters. This is not necessary if using the multicounters and E-counters over the LAN coupler, as the LAN coupler automatically detects and identifies any connected E-counters and multicounters. You can now use the LAN coupler configuration tool (over the LAN network) to tell the LAN coupler the device from which you want to retrieve the measurement data.

The LAN coupler carries out a so-called "polling" during runtime. This cyclically retrieves the most recently gathered measurement data from the measuring devices and buffers them in the LAN coupler. This can then be called up at any time over the LAN.

Data transmission from LAN coupler to PC

This data transmission is PC-controlled. A software tool runs in the background on the PC and uses the network to cyclically retrieve any measurement data from all available LAN couplers and save it to the hard disk.

Software tool

The supplied software tool has the following functions: • Background transmission of measurement data from

multicounters and E-counters and a number of LAN couplers • Full display of device measurement data through a macro

based on MS Excel

• Adjustable limit value signals for measured quantities • Limit violations are signaled with time stamp.

You will find further information on Modbus operation on the Internet at: http://www.siemens.com/beta

Display of measurement data on the PC

A Visual Basic macro for MS Excel is supplied with the LAN coupler for the display of measurement data on a PC. Among other things, this software tool lets you display all 35 measurement data of a 7KT1 34 multicounter on a single panel. You can then select the various measuring devices you want to display from a small list box. The software also lets you set alarm limits for up to 10 measured quantities of a multicounter.

If a measured value exceeds or falls below the specified limits, the relevant indication is output, complete with time stamp from the PC clock.

Display of measurement data of a multicounter

Simultaneous display of measurement data on more than one PC

The software supplied with the LAN coupler supports display of measurement data on any number of PCs connected to the network over a client-server architecture.

A PC acts as the server, similar to an Intranet or Internet server. This PC runs the software components that retrieve the measurement data from the LAN coupler and save it to hard disk. The MS Excel macro can be used to visualize the measurement data on both the server PC and the clients.

Other client PCs can access the data pool of the server PC to visualize the measurement data.

Open software architecture

The architecture of the software tool is open and can be customized to suit user requirements. The MS Excel macros are freely accessible and can also be customized by the user.

Block diagram of a system

TCP/IP network

PC Clients

- Communication software - MS EXCEL visualization - Configuration tool (only required for configuration of the LAN coupler)

LAN coupler Measuring device 10 I201_13445 RS485 Measuring device 2 LAN coupler LAN coupler Measuring device 1

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7KT1 5 E-counters

11/19

11 ■

Overview

E-counters are used to measure the power consumption in 3-phase systems, e.g. in industrial plants, offices and apartments in apartment houses.

Cost pressures are growing, particularly in industry. Product operating times are reduced and manufacturing facilities must be retrofitted more frequently. The load levels of the distribution boards during operation are therefore constantly under observation in order to avoid peak loads in a timely manner or to perform retrofitting.

The versions can be used for consumption analysis and minimization of operating costs in industrial plants and office buildings. The device versions with LAN interfaces allow a readout to be performed easily using an existing LAN network.

The devices indicate 6 measured values on an LCD display: Active energy rate 1 and rate 2, reactive energy rate 1 and rate 2, active power and reactive power. This means that the current load of a distribution board can be read out.

■

Benefits

• The measurement data are constantly stored as a text file with a time and date stamp. This allows users to create flexible designs for their own specific solutions (e.g.with MS Excel) • The devices indicate the instantaneous power in addition to

the consumption, providing an overview of plant capacity utilization at all times and saving additional measuring devices into the bargain

• For practically unlimited use: E-counters for direct connection, 63 A for small plants and up to 5000 A with transformer for large plants.

■

Function

E-counters with LAN coupler on LAN

The 7KT1 390 LAN couplers support connection of up to 10 7KT1 52 E-counters to a LAN network.

For more information on LAN operation and the MS Excel operator interface, see 7KT1 390 LAN couplers see page 11/16 ff. Display

The display of the E-counters comprises a 7-digit 7-segment display for measured quantities and additional function indications:

■

Unit ID

Active energy Rate 1 kWh Arrow and T1

Rate 2 kWh Arrow and T2

Reactive energy Rate 1 kvarh Arrow and T1

Rate 2 kvarh Arrow and T2

Active power kW Utilization and instantaneous value

Reactive power kvar Utilization and instantaneous value

Phase-sequence indication

1 – 2 – 3 Flashing triangle next to

left-hand phase sequence

Transformer primary current 5 ... 5000 A CT (current transformer) I2_10805a k M T1 T2 W var kvarh kWh 1 2 3 0

CT

T

7KT1 500, 7KT1 502, 7KT1 510, 7KT1 512, 7KT1 520 7KT1 501, 7KT1 503, 7KT1 511, 7KT1 513, 7KT1 521 Standards EN 61010-1, EN 62053-11, -21, -31 Supply

• Rated control supply voltage Uc V AC 230

• Operating range ×Uc 0.80 ... 1.20

Measuring inputs

Phase/N V 230

• Operating range voltage Phase/phase V 87 ... 480

Phase/N V 50 ... 276

• Operating range current Direct connection A 0.3 ... 63

--Transformer connection A -- 0.012 ... 5

• Transformer current Primary current A -- 5 ... 5000

• Frequency Hz 50

• Voltage Ue Continuous: phase/phase V 480

1 second: phase/phase V 800 Continuous: phase/N V 276 1 second: phase/N V 460 • Current I_e Continuous A 76 0.5 second A --10 ms A 2000

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11

Display

• Connection errors Discernible from phase-sequence

indication

Yes • Active energy: 1 display, 7-digit

+ display import or export (arrow)

kWh 000000.0 ... 999999.9

• Reactive energy: 1 display, 7-digit + display import or export (arrow)

kvarh 000000.0 ... 999999.9

• Active power: 1 display, 3-digit + display import or export (arrow)

kW or MW

000 ... 999 • Reactive power: 1 display, 3-digit

+ display import or export (arrow)

kvar or Mvar

000 ... 999 • Instantaneous rate measurement:

1 display, 1-digit For 7KT1 500, 7KT1 501, 7KT1 502, 7KT1 503 1 For 7KT1 510, 7KT1 511, 7KT1 512, 7KT1 513, 7KT1 520, 7KT1 521 1 or 2

• Display rate identifier For 7KT1 510, 7KT1 511, 7KT1 512,

7KT1 513, 7KT1 520, 7KT1 521

T1 or T2

• Transformer primary current Adjustable in 5 A steps A -- 5 ... 5000

• Storage of setting and energy values EEPROM

Measuring accuracy

• Active energy acc. to IEC 62053-21 Class 2

• Reactive energy acc. to IEC 62053-23 Class 3

• Active or reactive power % ± 2 ... 4 ± 1 digit

S0 interfaces Acc. to IEC 62053-31 Class A

• Terminal output For 7KT1 500 fixed Imp/kWh 10

--For 7KT1 502, 7KT1 510, 7KT1 512 For direct connection 63 A, adjustable

Imp/kWh 10 – 1 – 0.1 – 0.01 – 0.001

--For 7KT1 501 fixed Imp/kWh -- 1

For 7KT1 503, 7KT1 511, 7KT1 513 depending on the transformer factor, adjustable

Imp/kWh -- 10 – 1 – 0.1 – 0.01 – 0.001

• Pulse duration ms 125 ... 300

• Minimum interval between 2 pulses ms 300

• Required voltage V DC 5 ... 30

• Current ON/OFF mA 10 ... 27/0 ... 2

LAN interface Only for 7KT1 520, 7KT1 521

• Terminals +, –, shielding Safety acc. to EN 61010-1 • Degree of pollution 2 • Overvoltage category II • Operational voltage V 600 • Clearances mm ≥3.0

Terminals

• Supply and control terminals Blade for slotted screw mm ×

mm

0.4 × 2.5

• Conductor cross-sections, main current paths Rigid, max. mm2 _{1 × 25 or 2 × 16} _{1 × 6 or 2 × 4}

Rigid, min. mm2 1 × 1.5 1 × 0.95

• Conductor cross-sections supply and control terminals

Rigid, max. mm2 1 × 2.5 or 2 × 1.5

Flexible, with end sleeve, minimum mm2 0.75

• Ambient temperature °C 0 ... +55

• Relative humidity Storage % ≤80

• Vibration Sinus amplitude at 50 Hz mm ±0.25

• Degree of protection (terminal area) IP40 (IP20)

7KT1 500, 7KT1 502, 7KT1 510, 7KT1 512, 7KT1 520 7KT1 501, 7KT1 503, 7KT1 511, 7KT1 513, 7KT1 521

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7KT1 5 E-counters

11/21

11 ■

■

per PU PG PU PS*/ P. unit Weight per PU approx. V AC A AC V DC Unit(s) Unit(s) kg

E-counters for active energy

With S0 interface,

for 3-phase, 4-wire connection For direct connection, single rate

3 × 230/400 63 230 6 B 7KT1 500 027 1 1 0.396

For transformer connection, single rate 3 × 230/400

Trans-formers /5

230 6 B 7KT1 501 027 1 1 0.396 For direct connection, double rate, can be reset

3 × 230/400 63 230 6 B 7KT1 510 027 1 1 0.396

For transformer connection, double rate, can be reset 3 × 230/400

Trans-formers /5

230 6 B 7KT1 511 027 1 1 0.396

E-counters for active and reactive energy

With S0 interface,

for 3-phase, 4-wire connection

For direct connection, single rate, can be reset

3 × 230/400 63 230 6 B 7KT1 502 027 1 1 0.396

For transformer connection, single rate, can be reset 3 × 230/400

Trans-formers /5

230 6 B 7KT1 503 027 1 1 0.396 For direct connection, double rate, can be reset

3 × 230/400 63 230 6 B 7KT1 512 027 1 1 0.396

For transformer connection, double rate, can be reset 3 × 230/400

Trans-formers /5

230 6 B 7KT1 513 027 1 1 0.396

E-counters for active and reactive energy

For connection to LAN networks with 7KT1 390 LAN server, for 3 phases, 4-wire connection

For direct connection, double rate, can be reset

3 × 230/400 63 230 6 B 7KT1 520 027 1 1 0.450

For transformer connection, double rate, can be reset 3 × 230/400 Trans-formers /5 230 6 B 7KT1 521 027 1 1 0.388 7KT1 500, 7KT1 502, 7KT1 510, 7KT1 512, 7KT1 520 7KT1 501, 7KT1 503, 7KT1 511, 7KT1 513, 7KT1 521 6 44 64 45 90 I2_1 141 1 a 1 108 2 3 L2 L1 L2 L3 L3 L1 N N 4 6 7 8 9 10 11 12 6 44 64 45 90 I2_1 1412a 1 108 2 3 L2 L1 L3 k1 N 4 6 7 8 9 10 11 12 l1 k2 l2 k3 l3

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11 ■

Schematics

Grounding terminal

The grounding terminals required for the transmission technology for 7KT1 520 and 7KT1 521 versions only serve to shield the transmission cables and do not have a protective function. Rate switchover

If a voltage of 230 V AC is applied to terminals 4 and 5, the rate is switched to rate 2.

Instructions for the connection of transformer counters In the case of cross-section reduction, a short-circuit resistant cable is required for the power supply of terminals L1, L2 and L3 depending on the fusing for phases L1, L2 and L3. A fuse of 6 A is recommended for line protection.

Current transformers must not be operated with open terminals as this can result in dangerously high voltages, which may result in personal injuries and property damage. In addition to this, the transformers are exposed to thermal overload.

I2_13492a L1 L2 L3 L1 L1 L2 L2 L3 L3 N N N 63 A 63 A 1 2 3 4 5 + _ 7KT1 520 L N N L 2 3 4 5 7KT1 512 7 8 9 L N N L +–+ 2 3 4 5 7KT1 510 8 9 L N N L + – 2 3 7KT1 502 7 8 9 L N +–+ 2 3 7KT1 500 8 9 L N + – 63 A 230/400 V AC

Direct connection 63 A, 4-wire circuit LAN coupler Shielding 230 V AC 230 V AC Tariff 230 V AC 230 V AC Tariff 2 x 5...30 V DC 230 V AC 230 V AC Tariff 5...30 V DC 230 V AC 2 x 5...30 V DC 230 V AC 5...30 V DC kWh T1 kWh T2 kWh T1 - T2 kWh kvar kWh T1 I2_13493a 2 3 4 5 7KT1 511 8 9 L N N L + – 2 3 7KT1 501 8 9 L N + – 2 3 4 5 +_ 7KT1 521 L N N L 2 3 4 5 7KT1 513 7 8 9 L N N L +–+ L1 L2 L3 6 A 1 2 3 4 5 6 7KT1 503 7 8 9 L N +–+ N k1 L1 l1 k2 L2 l2 k3 L3 l3 N N N K l L k K l L k K l L k 6 A 6 A Shielding 5...30 V DC 5...30 V DC 2 x 5...30 V DC 2 x 5...30 V DC LAN coupler Tariff Tariff Tariff kWh T1 kWh T2 kWh T1 - T2 kWh kvar kWh T1 230/400 V AC

Current transformer connection, 4-wire circuit 230 V AC 230 V AC 230 V AC 230 V AC 230 V AC 230 V AC 230 V AC 230 V AC

(23)

7KT1 1 E-counters instabus KNX

11/23

11 ■

Overview

E-counters are used for the measurement of kWh in single- and three-phase systems, e.g. in industrial plants, offices and apartments in apartment houses. They help minimize operating costs and facilitate cost assignment.

E-counter with LCD

1 Large-format 7-digit LCD 8 × 4 mm

2 IR readout interface for mounting the readout measuring head 3 Display pushbutton

4 IR test output LED (10 IMP./W) 5 Sealable Set/Reset pushbutton

Readout data for consumption analysis Manual readout

The above data can be called up and manually displayed directly on the E-counter by pressing pushbutton 5 (Set/Reset pushbutton) and pushbutton 3 (Display pushbutton). The E-counter calculates the consumption costs when the price per kWh has been entered. The ability to input the device number facilitates assignment to a number system and cost assignment to one of the various cost centers.

Readout software for the IR measuring head

The data of the above table are read into a PC using the magnetic IR measuring head and stored in an ASCII file according to IEC 61107.

This ASCII file can be further processed in an Excel or Access file. The product range can run under Windows 95, 98 and Windows NT.

Readout data on the LCD or over IR interface

x = data are displayed

Data transmission instabus KNX

The 7KT1 162 and 7KT1 165 counters are intended for the following data transmission:

Active energy (kWh) rate 1 Active energy (kWh) rate 2 Device number

Active power (kW) phase L1 Active power (kW) phase L2 Active power (kW) phase L3

Visualization software "Recording of consumption data and maximum time analysis" (available soon)

The software can read out and assign counter readings, and prepare the data for accounting.

The system does not differentiate between counters that are read out manually or in online operation.

A maximum time analysis can be carried out over several days on the PC in online operation. Graphical analyses are also available.

Energy flow direction

Counting is only carried out in the specified energy flow direction. For counters with transformer connection, the energy flow direction of the transformer (primary and secondary) as well as the correct assignment of the voltage and current paths must be taken into account.

■

Benefits

• The devices have accuracy class 2. This enables extremely precise energy measurements.

• The large LCD for the reading out of all data locally makes for easy reading. + 1 3 4 5 2

PhQLT 1234

Hz

KUM MAX MkWArh

M

I2_07812a

7KT1 162 7KT1 165 Active energy Rate 1/2 kWh x/x

Price per kWh, adjustable Rate 1/2 Cost/ kWh

x/x

Total costs Rate 1/2 Total cost

x/x

Reactive energy Rate 1/2 kvarh x/x

Apparent energy Rate 1/2 kVAh

--Maximum active power Rate 1/2 kW

--Integration periods, adjustable Rate 1/2 min

--Instantaneous active power Sum total kW x

Phase L1/L2/L3 kW x

Instantaneous voltage Phase L1/L2/L3 V

--Instantaneous imported kWhSum total A

--Phase L1/L2/L3 A

--Instantaneous current factor

(Only for transformer counters)

FA I x

Instantaneous reactive powerSum total kvar

--Phase L1/L2/L3 kvar

--Instantaneous apparent powerSum total kVA

--Phase L1/L2/L3 kVA

--Instantaneous p.f. Phase L1/L2/L3 p.f.

--Instantaneous frequency Hz

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11 ■

7KT1 162 7KT1 165 Standards

Supply

Rated control voltage Ue V AC 230

Operating range Ue 0.80 ... 1.20

Rated frequency Hz 50

Operating frequency range Hz 45 ... 65

Power consumption Per phase VA 0.8

Measuring inputs

Connection type Direct Transformer

Voltage V 400

Operating range voltage V 320 ... 480

Current A 63 5

Operating range current Direct connection A 0.005 ... 63

--Transformer connection A -- 0.005 ... 6

Minimum operational current mA 5

Current factor Of transformer,

input in full digits

FAI -- 0 ... 255

Frequency Hz 50

Operating frequency range Distortion factor ≤3 %;

symmetric sinus curve

Hz 45 ... 65

Voltage Duration: phase/N V 276

1 second: phase/N V 460 Duration: phase/phase V 480 1 second: phase/phase V 800 Current Duration A 76 6 1 second A 126 10 Display Rate Double LCD H × W mm × mm 8 × 4

Readout data _{See table on page 11/23.}

7-digit with decimal points Active/reactive

Active energy Drum-type register H × W: mm × mm

7-digit with 1 decimal

Display period /s 0.5

Storage of measured values kWH EEPROM

Measuring accuracy At 23 °C ± 1 °C

Active energy Acc. to IEC 61036 Class 2

Safety

Supply measuring circuit isolation Electrical

Rated insulation voltage V 600

Rated impulse withstand voltage Inputs against ground

for 1 min. at 50 Hz

kV 4

Overvoltage category VDE 0110 T1 III

Pulse output, S0 interface Acc. to

IEC 61393/DIN 43864

IR test output LED Imp/Wh 10

Terminals, output Imp/kWh 10 1

Minimum pulse duration ms 125

External voltage V DC 5 ... 30 Current mA 10 ... 20 Resistance kΩ 0.5 ... 1.5 instabusKNX interface Standard EIS 9 Readout data 1) Terminals

Main current paths ± screw (Pozidriv) 2

Supply/control terminals Blade for slotted screw mm 0.4 × 2.5

Conductor cross-sections Main current paths

Rigid (max.) mm2 1 × 10

Rigid (min.) mm2 1 × 1.5

Conductor cross-sections Supply/control terminals

Rigid (max.) mm2 1 × 2.5

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7KT1 1 E-counters instabus KNX

11/25

11 ■

■

Dimensional drawings E-counters 7KT1 162 7KT1 165 Ambient conditions Temperature Storage °C -40 ... +70 Operation °C 0 ... +55

Relative air humidity Storage % ≤98

Operation % ≤80

Minimum vibration Sinus amplitude at 50 Hz mm ±0.25

Degree of pollution VDE 0110-1 2

Degree of protection (terminal area) IP40 (IP20)

I_e Uc MW DT Order No. Price

per PU PG PU PS*/ P. unit Weight per PU approx. A AC V DC Unit(s) Unit(s) kg

E-counters for 3/4 wire connection, with LCD,

with IR interface for double rate

Direct connection, with 2 S0 pulse outputs and instabusinterface Active and reactive energy

10 (63) 3 × 230/400 6 B 7KT1 162 027 1 1 0.450

Transformer connection, with 2 S0 pulse outputs and instabusKNX interface Active and reactive energy

Trans-formers /5(6)

3 × 230/400 6 B 7KT1 165 027 1 1 0.390

IR measuring heads for 7KT1 16 C 7KT9 030 027 1 1 0.170 For reading out data according to IEC 61107,

with 9-pin COM connector and readout software

7KT1 162 7KT1 165 4 5 ₉0 I2 _ 1 1 9 7 8 6 4 4 4 7 1 0 7 2 3 1 0 7 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 2 3 4 5 6 7 8 91 01 1 1 2 1 2 3 4 5 6 7 8 91 01 1 1 2 1 3 4 6 7 9 1 0 1 2

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11 ■

Schematics

S0 interfaces

Connection with S0 interface

The short-circuit resistant optocoupler is operated at 5 ... 30 V DC. The current must be selected within a range of max. 20 mA. The pulse duration is 125 ms.

Instructions for the connection of transformer counters In the case of cross-section reduction, a short-circuit resistant cable is required for the power supply of terminals 2, 5 and 8, depending on the fusing for phases L1, L2, L3. A 6 A fuse is recommended for the line protection.

Direct connection 10 (63) A Transformer connection 5 (6) A

L1 L2 L3 N 63 A 63 A 63 A 7KT1 162 1 2 3 4 5 6 7 8 9 10 11 12 1 3 4 6 7 9 10 12 + N L + I2_11979a Tariff 230/400 V AC 230 V AC 2 x 5 - 30 V DC 7KT1 165 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 11 11 11 N L 7 8 9 10 11 12 + + L1 L2 L3 N 6 A I2_11980a 6 A 6 A k l k l k l K L K K L L 230 V AC 230/400 V AC 2 x 5 - 30 V DC Tariff

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7KT1 2 current transformers

11/27

11 ■

Overview

This three-phase current transformer can be used in distribution boards according to DIN 43880. The measuring leads are routed vertically through the standard mounting rail.

This type of current transformer is suitable for supply systems or outgoing conductors in connection with the installation of a 5TE8 switch or a 5TE1 disconnector, as the primary connecting leads do not have to be interrupted.

The current transformer is designed for cables of up to 13 mm in diameter, e.g. H07V-R with 50 mm2 conductor cross-section.

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Benefits

• The current transformer has an accuracy class 1 in accordance with EN 60044-1. This value is better than most measuring devices in this area of application.

• The versions designed for a transformer ratio of 60/5 A, 100/5 A and 150/5 A enable an even broader range of applications.

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Schematics

Note:

Current transformers must not be operated with open terminals as this can result in dangerously high voltages, which may result in personal injuries and property damage. It also exposes the transformer to thermal overload.

7KT1 200 7KT1 201 7KT1 202

Standards EN 60044-1

Secondary rated current strength A 5

Accuracy class Cl. 1

Rated power VA 1.25 2.5 3.75

Rated frequency fn Hz 50/60

Thermal current limit I_th short-time A 60 ×I_e Thermal continuous current A 1 ×Ie

Overcurrent limit factor FS 5

Rated impulse withstand voltage Uimp kV > 3

Creepage distances and clearances mm > 3

Rated operational voltage Ue V AC 720

Rated operational current I_e A AC 3 × 60 3 × 100 3 × 150

Terminals ± screw (Pozidriv) PZ 1

Conductor cross-sections

- Rigid mm2 0.5 ... 4

- Flexible, with end sleeve mm2 _{0.5 ... 2.5}

Permissible ambient temperature °C -5 ... +60

Resistance to climate Acc. to EN 60068-1 20/60/4

Ue Ie Isec MW DT Order No. Price

per PU PG PU PS*/ P. unit Weight per PU approx. V AC A AC V DC Unit(s) Unit(s) kg Current transformers 720 3 × 60 5 6 B 7KT1 200 027 1 1 0.460 3 × 100 B 7KT1 201 027 1 1 0.460 3 × 150 B 7KT1 202 027 1 1 0.465 7KT1 200 7KT1 201 7KT1 202 105 45 90 I2_07809a 7 64 44 24 K/P1 K/P1 K/P1 L/P2l kL/P2l kL/P2l k 64 7KT1 200 7KT1 201 7KT1 202

(28)

11 ■

Overview

Measuring selector switches are used as CO contacts of the phases for voltages and currents in three-phase systems for voltmeters and ammeters.

The design of these switches is adapted to match the modular installation devices. They support use in compliance with EN 60947-3.

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Benefits

• The devices have a rated insulation voltage of 660 V. This permits use in many systems.

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Schematics

Internal interconnection of the phases in the ammeter changeover contact for the prevention of glitches at the connections of the current transformers:

per PU PG PU PS*/ P. unit Weight per PU approx. V AC A AC V DC Unit(s) Unit(s) kg

Voltmeter selector switches

400 12 6 3 A 7KT9 010 027 1 1/48 0.110

Ammeter selector switches for transformer operation

400 12 6 3 A 7KT9 011 027 1 1 0.110 7KT9 010 7KT9 011 52 45 40 54 54 70 64 I2_07811a Voltmeter switching L1 N L1/N 0 L2/N L3/N L1/L2 L2/L3 L3/L1 L2 L3/N 3 9 5 1 L2/N L1/N 0 L1/L2 L2/L3 L3/L1 V 2 12 5 7 L3 7KT9 010 I2_07813b Ammeter switching

Switch position Short-circuited phases

L1 L2 L3 0 ✓ ✓ ✓ L1 -- ✓ ✓ L2 ✓ -- ✓ L1 N L3 0 L1 L2 L2 5 2 12 4 A 6 7 L3 1 I2_07814c 7KT9 011