Areva Protective Relay

CHAPTER 4

Technical Data and

Characteristic Curves

CONTENTS

1.

RATINGS

3

1.6 Output relay contacts 4

2.

HIGH VOLTAGE WITHSTAND

5

3.

ELECTRICAL ENVIRONMENT

5

4.

ENVIRONMENT

5

5.

PROTECTION ACCURACY

6

6.

AUTOMATION FUNCTIONS ACCURACY TIMERS

8

7.

MEASUREMENT ACCURACY

8

8.

PROTECTION SETTING RANGES

9

8.1 [67/50/51] Directional/non directional phase Overcurrent (P127 only) 9

8.1.1 Synchronous polarisation 9

8.1.2 Protection setting ranges (Only P127) 9

8.2 [50/51] Phase Overcurrent Protection (P126 Only) 10

8.2.1 Protection setting ranges (Only P126) 10

8.3 [67N/50N/51N] Neutral/Ground/Earth Directional/non Directional Earth

Overcurrent Protection (P125, P126 & P127) 10

8.3.1 Protection setting ranges 11

8.4 Earth Wattmetric Protection (P125, P126 & P127) 13

8.5 Functionality mode 13

8.5.1 Protection setting ranges 13

8.6 Undercurrent protection (P126 & P127 only) 15

8.6.1 Protection setting ranges 15

8.7 Negative sequence overcurrent protection (P126 & P127 only) 15

8.7.1 Protection Setting Ranges 15

8.8 Thermal overload protection (P126 & P127 only) 15

8.9 Under Voltage protection (P127 only) 16

8.9.1 Protection setting ranges (only P127) 16

8.10 Over Voltage protection (P127 only) 17

8.10.1 Protection setting ranges (only P127) 17

8.11 Residual Over Voltage protection (P125, P126 & P127) 18

8.11.1 Protection setting ranges 18

8.12 Multishot Autorecloser function (P126 & P127) 18

8.12.1 Multishot Autorecloser settings 19

9.

AUTOMATION CONTROL FUNCTIONS

20

9.1 Cold load pickup (P126 & P127) 20

9.2 Auxiliary timers (P126 & P127) 20

9.3 Broken conductor detection (P126 & P127) 20

9.3.1 Broken conductor detection setting ranges 20

9.4 Circuit breaker failure (P126 & P127) 20

9.4.1 CB Fail setting ranges 20

9.5 Trip circuit supervision (P126 & P127) 20

9.5.1 Trip circuit supervision setting ranges 20

9.6 Circuit breaker control and monitoring (P126 & P127) 21

9.6.1 Setting ranges 21

9.7 AND logic equation (P126 & P127) 21

9.7.1 Timer setting ranges 21

10.

RECORDING FUNCTIONS (P126 & P127)

22

10.1 Event recorder 22

10.2 Fault recorder 22

10.3 Disturbance recorder 22

10.3.1 Triggers; Data; Setting Ranges 22

11.

COMMUNICATION (P125, P126, P127)

23

12.

CURVES

24

12.1 General 24

12.1.1 Inverse Time Curves : 24

12.1.2 Reset timer 25

12.2 IDMT Curves 26

12.2.1 IEC Curves 26

12.2.2 RI Curves 32

12.2.3 IEEE/ANSI CURVES 33

1.

RATINGS

Power Supply range 24-60Vdc 48-150Vdc

130-250Vdc / 100-250Vac 50/60Hz Power supply variations D.C. ± 20 %

A.C. – 20%, +10%

Ripple 12%

Power off withstand 50 ms

Burden P125 Stand by: <3W dc or <8VA ac Max: <5W dc or <12VA ac Burden P126 Stand by: <3W dc or <8VA ac

Max: <6W dc or <14VA ac Burden P127 Stand by: <3W dc or <8VA ac

Max: <6W dc or <14VA ac 1.2 Frequency

Functionality frequency range From 45 to 65Hz

Rated Frequency 50/60Hz

1.3 Current Inputs

Phase current inputs 1 and 5 Amps by connection Earth current inputs 1 and 5 Amps by connection Operating range By ordering code (Cortec) Burden Phase Current < 0.025 VA (1A)

< 0.3 VA (5A) Burden Earth Current < 0.008 VA (1A) < 0.010 VA (5A) Thermal withstand 1s @ 100 x rated current

2s @ 40 x rated current continuous @ 4 x rated current

1.4 Voltage Inputs

Voltage input range 57 to 130V

Operating range 0 to 260V (measuring range)

Burden Resistive 44 kohm: 0.074W/57Veff

0.38W/130Veff 1.54W/260Veff Thermal Withstand

Continuous 260Vph - ph eff

10 seconds 300Vph - ph eff

Voltage input range 220 to 480V

Operating range 0 to 960V (measuring range)

Burden 438 kohm: 0.1102W/220Veff

0.525W/480Veff 2.1W/960Veff Thermal Withstand Continuous 960V ph-ph eff 10 seconds 1300V ph-ph eff 1.5 Logic inputs

Logic input type Independent optically insulated Logic input burden 10 mA per input

Logic input recognition time <5ms Voltage input

24-60 Vdc supply range relay from 19.2 Vdc to 72 Vdc 48-150 Vdc supply range relay from 38.4 Vdc to 180 Vdc 130-250 Vdc supply range relay from 130 Vdc to 300 Vdc 1.6 Output relay contacts

Logic output type Dry contact Ag Cdo Logic output rating

Make & carry 30A for 3 s

Carry 5A continuos

Break 135 Vdc, 0.3 Amps (L/R = 30 ms)

250 Vdc, 50 W resistive or 25W inductive (L/R=40ms)

220 Vac, 5 Amps (cos ϕ = 0.6)

Maximum 5A and 300V

Loaded contact 10000 operation minimum Unloaded contact 100000 operation minimum

2.

HIGH VOLTAGE WITHSTAND

Dielectric withstand IEC 60-255-5 2 kV common mode 1 kV differential mode Impulse voltage IEC 60-255-5 5 kV common mode

1 kV differential mode Insulation resistance IEC 60-255-5 > 1000 MΩ

3.

ELECTRICAL ENVIRONMENT

High frequency IEC 1000-4-1 2.5 kV common mode, class 3

disturbance 1 kV differential mode, class 3

Fast transient IEC 1000-4-4 4 4 kV auxiliary voltage, class 4 ANSI C37.90.1 2 kV others, class4

Electrostatic IEC 1000-4-2 8 kV, class 4 discharge

Radio frequency ANSI C37.90.2 35 V/m

impulse IEC 1000-4-3 10 V/m

4.

ENVIRONMENT

Temperature IEC 60-255-6 Storage -25°C to +70°C Operation -25°C to + 55 °C Humidity IEC 600-68-2-3 56 days at 93% RH and 40°C Enclosure protection IEC 60-529 IP 52, IK 07

Vibrations IEC 60-255-21-1 Response and endurance, class 2 Shocks and bumps IEC 60-255-21-11 Response and withstand, class 1 Seismic IEC 60-255-21-3 Class 1

5.

PROTECTION ACCURACY

I : Phase current Is : I>, I>> & I>>> I2s : I2>, I2>> & I2>>> Ies : Ie>, Ie>> & Ie>>> Iescos : Iecos> & Iecos>> Pe : Earth fault Power Pes : Pe> & Pe>>

Us : U>, U>>, U<, U<<

Urs : Ue>, Ue>>, Ue>>>, Ue>>>> DT : Definite time

IDMT : Inverse time

Element Range Accuracy Trigger Reset Time accuracy Phase Overcurrent

elements

I> & I>> & I>>>

0.1 to 40 In ± 2% DT: Is ± 2% IDMT: 1.1Is ±2% 0.95 Is ±2% 1.05 Is ±2% ± 2% +30…50ms ±5% +30…50ms Relay Characteristic

Angle (Torque angle) 0° to 359° ≤ 2° Trip zone ±10° to ±170° ≤ 2° Earth Fault Overcurrent

elements

Ie> & Ie>> & Ie>>>

0.002 to 1Ien 0.01 to 8 Ien 0.1 to 40 Ien ± 2% DT: Ies ± 2% IDMT: 1.1Ies ±2% 0.95 Ies ±2% 1.05 Ies ±2% ± 2% +30…50ms ±5% +30…50ms Wattmetric Earth Fault

elements 57 to 130V0.2 to 20W 1 to 160W 10 to 800W ±4% ± error on cosϕ DT: Pes ± accuracy IDMT: 1.1Pes ± accuracy 0.95 Pes ± accuracy 1.05 Pes ± accuracy ±2% +30…50ms ±5% +30…50ms Wattmetric Earth Fault

elements Pe> & Pe>>

220 to 480V 1 to 80W 4 to 640W 40 to 3200W

±4% ± error

on cosϕ DT: Pes± accuracy IDMT: 1.1Pes ± accuracy 0.95 Pes ± accuracy 1.05 Pes ± accuracy ±2% +30…50ms ±5% +30…50ms Active Earth fault

overcurrent elements. Iecosϕ> & Iecosϕ>>

0.002 to 1Ien 0.01 to 8 Ien 0.1 to 40 Ien ±2% ± error on cosϕ DT: Iescos ± accuracy IDMT: 1.1 Iescos ± accuracy 0.95 Iescos ± accuracy 1.05 Iescos ± accuracy ±2% +30…50ms ±5% +30…50ms Negative Sequence Phase Overcurrent elements

I2>, I2>> & I2>>>

0.1 to 40 In ± 2% DT: I2s ± 2% IDMT: 1.1I2s ±2% 0.95 Is 1.05 Is ±±2%2% ±±2% +30…50ms5% +30…50ms Phase Undercurrent element I< 0.1 to 1 In ± 2% DT: I< ± 2% 0.95 Is ±2% ±2% +30…50ms Broken conductor

[I2/I1]. 20 to 100% ± 3% DT: I2/I1 ± 3% 0.95 I2/I1 ±3% ±2% +30…50ms Thermal Overload

Element Range Accuracy Trigger Reset Time accuracy Over voltage

U> & U>>

57 to 130V

2 to 260V ± 2% DT: Us ± 2% 0.95 Is ±2% ±2% +20…40ms Over voltage

U> & U>> 220 to 480V10 to 960V ± 2% DT: Us ± 2% 0.95 Is ±2% ±2% +20…40ms Under voltage

U< & U<< 57 to 130V2 to 130V ± 2% DT: Us ± 2% 0.95 Us ±2% ±2% +20…40ms Under voltage

U< & U<< 220 to 480V10 to 480V ± 2% DT: Us ± 2% 0.95 Us ±2% ±2% +20…40ms Residual Over voltage

(Direct Input)

Ue>, Ue>>, Ue>>>, Ue>>>>

57 to 130V 1 to 260V 1 to 260V

± 2% DT: Urs ± 2% 0.95 Urs ±2% ±2% +20…40ms

Residual Over voltage (Direct Input)

Ue>, Ue>>, Ue>>>, Ue>>>>

220 to 480V 4 to 960V 5 to 960V

± 2% DT: Urs ± 2% 0.95 Urs ±2% ±2% +20…40ms

Derived Residual Over voltage

Ue>, Ue>>, Ue>>>, Ue>>>> 57 to 130V 1 to 260V 1 to 260V greater of ± 2% or 0.2V DT: Urs ± 2% 0.95 Urs ±2% ±2% +20…40ms

Derived Residual Over voltage

Ue>, Ue>>, Ue>>>, Ue>>>> 220 to 480V 4 to 960V 5 to 960V greater of ± 2% or 1V DT: Urs ± 2% 0.95 Urs ±2% ±2% +20…40ms

6.

AUTOMATION FUNCTIONS ACCURACY TIMERS

Cold load Pick Up ±2% +20…40ms

Programmable AND logic ±2% +10…30ms

7.

MEASUREMENT ACCURACY

Measurement Range Accuracy

Phase Current 0.1 to 40 In Typical ±0.5% at In 0.002 to 11Ien Typical ±0.5% at Ien 0.01 to 8 Ien Typical ±0.5% at Ien Earth current

0.1 to 40 Ien Typical ±0.5% at Ien 57 to 260V Typical ±0.5% at Un Voltage

220 to 960V Typical ±0.5% at Un

Active Power and Active Energy Reactive Power and Reactive Energy

Cos ϕ Accuracy Sin ϕ Accuracy

0.866 < 1.5% 0.866 < 3%

8.

PROTECTION SETTING RANGES

8.1 [67/50/51] Directional/non directional phase Overcurrent (P127 only)

− Phase current Fundamental only

− Phase or phase to phase voltage Fundamental only

− Minimum voltage operating 0.6V 8.1.1 Synchronous polarisation

− Minimum phase voltage fixed threshold enabling synchronous polarising: 0.6V

− Synchronous polarising permanence time phase voltage thresholds: 5s

8.1.2 Protection setting ranges (Only P127) [67] Phase OC Setting Range I> No or DIR non DIR

I> Current set 0.1 In 25 In 0.01 In Delay type DT or IDMT (IEC_STI, IEC_SI, IEC_VI,

IEC_EI, IEC_LTI, C02, C08, IEEE_MI, IIEEE_VI, IEEE_EI, RI curve)

I> Trip delay time 0 s 150s 0.01s I> TMS 0.025 1.5 0.025 I> Reset char DT or IDMT

I> RTMS 0.025 1.5 0.025 I> tReset 0.00 s 100 s 0.01 s Interlock I> by

I>>…I>>> No or Yes

I> Torque angle 0° 359° 1° I> Trip zone ±10° ±170° 1° I>> No or Yes or DIR

I>> Current set 0.5 In 40 In 0.01 In I>> Trip delay time 0 s 150s 0.01s I>> Torque angle 0° 359° 1° I>> Trip zone ±10° ±170° 1° I>>> No or Yes or DIR

I>>> Current set 0.5 In 40 In 0.01 In I>>>Trip delay time 0 s 150s 0.01s I>>> Torque angle 0° 359° 1° I>>> Trip zone ±10° ±170° 1°

8.2 [50/51] Phase Overcurrent Protection (P126 Only)

− Phase current Fundamental only

8.2.1 Protection setting ranges (Only P126) [51] Phase OC Setting Range I> No or Yes

I> Current set 0.1 In 25 In 0.01 In Delay type DT or IDMT (IEC_STI, IEC_SI, IEC_VI,

IEC_EI, IEC_LTI, C02, C08, IEEE_MI, IIEEE_VI, IEEE_EI, RI curve)

I> Trip delay time 0 s 150s 0.01s I> TMS 0.025 1.5 0.025 I> Reset char DT or IDMT

I> RTMS 0.025 1.5 0.025 I> tReset 0.00 s 100 s 0.01 s Interlock I> by

I>>…I>>> No or Yes I>> No or Yes or DIR

I>> Current set 0.5 In 40 In 0.01 In I>> Trip delay time 0 s 150s 0.01s I>>> No or Yes

I>>> Current set 0.5 In 40 In 0.01 In I>>>Trip delay time 0 s 150s 0.01 s

8.3 [67N/50N/51N] Neutral/Ground/Earth Directional/non Directional Earth Overcurrent Protection (P125, P126 & P127)

− Earth Current Fundamental only

− Earth current ranges See following table

− Residual voltage Fundamental only

− Residual voltage range See following table

− Minimum Residual voltage operation 1V (Uen: 57 to 130V)

8.3.1 Protection setting ranges

[67N] Earth OC Setting Range High sensitivity

current set Cortec code P12-C-X---X

Ie> 0.002 Ien 1 Ien 0.001 Ien Ie>> 0.002 Ien 1 Ien 0.001 Ien Ie>>> 0.002 Ien 1 Ien 0.001 Ien Med. sensitivity

current set Cortec code P12-B-X---X

Ie> 0.01 Ien 1 Ien 0.005 Ien Ie>> 0.01 Ien 8 Ien 0.005 Ien Ie>>> 0.01 Ien 8 Ien 0.005 Ien Low sensitivity

current set Cortec code P12-A-X---X

Ie> 0.1 Ien 25 Ien 0.1 Ien Ie>> 0.5 Ien 40 Ien 0.1 Ien Ie>>> 0.5 Ien 40 Ien 0.1 Ien Ie> No or Yes or DIR

Delay type DT or IDMT (IEC_STI, IEC_SI, IEC_VI, IEC_EI, IEC_LTI, C02, C08, IEEE_MI, IIEEE_VI, IEEE_EI, RI curve)

Ie> Trip delay time 0 s 150s 0.01s Ie> TMS 0.025 1.5 0.025 Ie> Reset char DT or IDMT

Ie> RTMS 0.025 1.5 0.025 Ie> tReset 0.00 s 100 s 0.01 s Interlock Ie> by

Ie>>…Ie>>> No or Yes

Ie> Torque angle 0° 359° 1° Ie> Trip zone ±10° ±170° 1° Input residual voltage with range from 57 to 130V

Ue> 1 V 260 V 0.1 V

Input residual voltage with range from 220 to 480V

Ue> 4 V 960 V 0.5 V

Ie>> No or Yes or DIR

Ie>> Trip delay time 0 s 150s 0.01s Ie>> Torque angle 0° 359° 1° Ie>> Trip zone ±10° ±170° 1° Ie>> tReset 0.00 s 100 s 0.01 s Input residual voltage with range from 57 to 130V

[67N] Earth OC Setting Range

Ue>> 1 V 260 V 0.1 V Input residual voltage with range from 220 to 480V Ue>> 4 V 960 V 0.5 V Ie>>> No or Yes or DIR

Ie>>>Trip delay time 0 s 150s 0.01s Ie>>> Torque angle 0° 359° 1° Ie>>> Trip zone ±10° ±170° 1° Ie>>> tReset 0.00 s 100 s 0.01 s Input residual voltage From 57 to 130V

Ue>>> 1 V 260 V 0.1 V Input residual voltage From 220 to 480V

Ue>>> 4 V 960 V 0.5 V

ATTENTION : THE UE THRESHOLDS SETTING DEPEND ON THE ADOPTED WIRING SCHEME. IN CONFIGURATION/GENERAL OPTION MENU OF THE P127 RELAY YOU CAN SET THE VE INPUT

DIRECTLY FROM A VT(I.E. FROM A DELTA VT) OR DERIVED FROM THE MEASUREMENT OF THE THREE PHASE TO NEUTRAL

VOLTAGE (3VPN). IN THIS CASE THE UE IS CALCULATED AS: C U B U A xU Ue= I+ I+ I 3 1

THE SETTING OF THE UE THRESHOLDS MUST TAKE IN ACCOUNT THE ABOVE FORMULA.

8.4 Earth Wattmetric Protection (P125, P126 & P127)

− Earth current Fundamental only

− Residual Voltage Fundamental only

8.5 Functionality mode

This protection can work in Pe or Iecos mode. 8.5.1 Protection setting ranges

[32N] Earth Wattmetric

Setting range Mode Pe or Iecos

High sensitivity: Current input from 0.002 to 1 Ien 57–130V Input voltage Cortec code: P12-CAX---X

Pe> (*) 0.2 x k W 20 x k W 0.02 x k W Pe>> (*) 0.2 x k W 20 x k W 0.02 x k W 220–480V Input voltage Cortec code: P12-CBX---X

Pe> (*) 1 x k W 80 x k W 0.1 x k W Pe>> (*) 1 x k W 80 x k W 0.1 x k W Med. sensitivity Current input from 0.01 to 8 Ien 57–130V Input voltage Cortec code: P12-BAX---X

Pe> (*) 1 x k W 160 x k W 0.1 x k W Pe>> (*) 1 x k W 160 x k W 0.1 x k W 220–480V Input voltage Cortec code: P12-BBX---X

Pe> (*) 4 x k W 640 x k W 0.5 x k W Pe>> (*) 4 x k W 640 x k W 0.5 x k W Low sensitivity Current input from 0.1 to 40 Ien 57–130V Input voltage Cortec code: P12-AAX---X Pe> (*) 10 x k W 800 x k W 1 x k W Pe>> (*) 10 x k W 800 x k W 1 x k W 220–480V Input voltage Cortec code: P12-ABX---X

Pe> (*) 40 x k W 3200 x k W 5 x k W Pe>> (*) 40 x k W 3200 x k W 5 x k W Pe> No or Yes

Delay type DT or IDMT (IEC_STI, IEC_SI, IEC_VI, IEC_EI, IEC_LTI, C02, C08, IEEE_MI, IIEEE_VI, IEEE_EI,RI curve)

tPe> Trip delay time 0 s 150s 0.01s Pe> TMS 0.025 1.5 0.025 Pe> Reset char DT or IDMT

[32N] Earth Wattmetric

Pe> tReset 0.00 s 100 s 0.01 s Pe>> No or Yes

tPe>> Trip delay time 0 s 150 s 0.01 s Pe>> tReset 0.00 s 100 s 0.01 s High sensitivity Iecos Cortec code P12-C-X---X

IeCos> 0.002 Ien 1 Ien 0.001 Ien IeCos>> 0.002 Ien 1 Ien 0.001 Ien Med. sensitivity Iecos Cortec code P12-B-X---X

IeCos> 0.01 Ien 8 Ien 0.005 Ien IeCos>> 0.01 Ien 8 Ien 0.005 Ien Low sensitivity Iecos Cortec code P12-A-X---X

IeCos> 0.1 Ien 25 Ien 0.01 Ien IeCos>> 0.5 Ien 40 Ien 0.01 Ien IeCos> Yes or No

Delay type DT or IDMT (IEC_STI, IEC_SI, IEC_VI, IEC_EI, IEC_LTI, C02, C08, IEEE_MI, IIEEE_VI, IEEE_EI, RI curve)

IeCos> Trip delay time 0 s 150s 0.01s IeCos> TMS 0.025 1.5 0.025 IeCos> Reset type DT or IDMT

IeCos> RTMS 0.025 1.5 0.025 IeCos> tReset 0.00 s 100 s 0.01 s IeCos>> Yes or No

IeCos>>Trip delay time 0 s 150s 0.01s IeCos> tReset 0.00 s 100s 0.01s Pe/IeCos Angle 0° 359° 1°

(*) ATTENTION : THE PE THRESHOLDS ARE DISPLAYED IN THE FORMAT: ##.## X K W THE THRESHOLD VALUE WILL BE IN WATT SECONDARY.

E.G. YOU ARE SETTING PE> THRESHOLD ON THE RELAY DISPLAY; YOU HAVE WRITTEN 20.

IF IEN = 1A, THE INTERNAL RELAY SETTING VALUE WILL BE EQUAL TO 20 X 1 = 20W.

IF IEN = 5A, THE INTERNAL RELAY SETTING VALUE WILL BE EQUAL TO 20 X 5 = 100W.

8.6 Undercurrent protection (P126 & P127 only)

− Undercurrent associated to the breaker failure function

− Phase current: Fundamental only

8.6.1 Protection setting ranges

[37] Under Current Setting ranges I< No or Yes

I< 0.1 In 1 In 0.01 In

tI< 0 s 150 s 0.01 s

8.7 Negative sequence overcurrent protection (P126 & P127 only)

− Phase current: Fundamental only

8.7.1 Protection Setting Ranges

[46] Neg.Seq. OC Setting ranges I2> No or Yes

I2> 0.1 In 25 In 0.01 In Delay type DT or IDMT (IEC_STI, IEC_SI, IEC_VI,

IEC_EI, IEC_LTI, C02, C08, IEEE_MI, IIEEE_VI, IEEE_EI, RI curve)

I2> Trip delay time 0 s 150s 0.01s I2> TMS 0.025 1.5 0.025 I2> Reset char DT or IDMT

I2> RTMS 0.025 1.5 0.025 I2> tReset 0.04 s 100 s 0.01 s I2>> No or Yes

I2>> Current set 0.5 In 40 In 0.01 In I2>> Trip delay time 0 s 150s 0.01s I2>>> No or Yes

I2>>> Current set 0.5 In 40 In 0.01 In I2>>>Trip delay time 0 s 150s 0.01s 8.8 Thermal overload protection (P126 & P127 only)

− Phase Current: RMS

8.8.1 Protection setting ranges

[49]Therm. OL Setting ranges Therm. OL No or Yes Iθ 0.1 In 3.2 In 0.01 Te 1 mn 200 mn 1mn k 1 1,5 0.01 θ Trip 50% 200% 1% θ Alarm No or Yes θ Alarm 50% 200% 1%

8.9 Under Voltage protection (P127 only)

− Phase or phase to phase voltage Fundamental only

− Thresholds selection mode AND or OR (*) 8.9.1 Protection setting ranges (only P127)

[27] Phase Under Voltage

Setting ranges 57–130V Input

voltage. Cortec code: P127-AX---X U< No or AND or OR U< 2 V 130 V 0.1 V tU< 0 s 600 s 0.01 s U<< No or AND or OR U<< 2 V 130 V 0.1 V tU<< 0 s 600 s 0.01 s 220–480V Input

voltage. Cortec code: P127-BX---X U< No or AND or OR U< 10 V 480 V 0.5 V tU< 0 s 600 s 0.01 s U<< No or AND or OR U<< 10 V 480 V 0.5 V tU<< 0 s 600 s 0.01 s

8.10 Over Voltage protection (P127 only)

− Phase or phase to phase voltage Fundamental only

− Thresholds selection mode AND or OR (*) 8.10.1 Protection setting ranges (only P127)

[59] Phase Over Voltage

Setting ranges 57–130V Input

voltage. Cortec code: P127-AX---X U> No or AND or OR U> 2 V 260 V 0.1 V tU> 0 s 260 s 0.01 s U>> No or AND or OR U>> 2 V 260 V 0.1 V tU>> 0 s 600 s 0.01 s 220–480V Input

voltage. Cortec code: P127-BX---X U> No or AND or OR U> 10 V 960 V 0.5 V tU> 0 s 600 s 0.01 s U>> No or AND or OR U>> 10 V 960 V 0.5 V tU>> 0 s 600 s 0.01 s

(*) OR = trip caused by one or two or three phase start. AND = trip only caused by three phase start

8.11 Residual Over Voltage protection (P125, P126 & P127)

− Residual voltage: Fundamental only

8.11.1 Protection setting ranges [59] Residual Over Voltage

Setting ranges 57–130V Input

voltage. Cortec code: P127-AX---X Ue>>>> No or Yes

Ue>>>> 1 V 260 V 0.1 V TUe>>>> 0 s 600 s 0.01 s 220–480V Input

voltage. Cortec code: P127-BX---X Ue>>>> No or Yes

Ue>>>> 5 V 960 V 0.5 V tUe>>>> 0 s 600 s 0.01 s

ATTENTION : THE UE THRESHOLDS SETTING DEPEND ON THE ADOPTED WIRING SCHEME. IN CONFIGURATION/GENERAL OPTION MENU OF THE P127 RELAY YOU CAN SET THE VE INPUT

DIRECTLY FROM A VT(I.E. FROM A DELTA VT) OR DERIVED FROM THE MEASUREMENT OF THE THREE PHASE TO NEUTRAL

VOLTAGE (3VPN). IN THIS CASE THE UE IS CALCULATED AS: C U B U A xU Ue= I+ I+ I 3 1

THE SETTING OF THE UE THRESHOLDS MUST TAKE IN ACCOUNT THE ABOVE FORMULA.

8.12 Multishot Autorecloser function (P126 & P127)

− Main shots 4 independent shots

− External logic inputs 6 inputs (CB opened signal, CB closed signal, manual opening command, manual closing command, blocking order, cycle activation)

− Internal programmable trigger from phase and earth fault on all reclosing cycles

− External trigger from digital input.

− Inhibit time on manual closing.

8.12.1 Multishot Autorecloser settings [79] Autoreclose Setting ranges Autoreclose Yes or No Ext. CB Fail Yes or No

Ext. CB Fail time 0.01s 600s 0.01 s Ext. Aux1 ((I>) Yes or No

Ext. Aux2 (Ie>) Yes or No Ext. Block Yes or No

td1 Dead time 1 0.01 s 300 s 0.01 s td2 Dead time 2 0.01 s 300 s 0.01 s td3 Dead time 3 0.01 s 600 s 0.01 s td4 Dead time 4 0.01 s 600 s 0.01 s tR Reclain time 0.02 s 600 s 0.01 s Inhib Time tI 0.02 s 600 s 0.01 s Phase Cycle 0 4 1 E/Gnd Cycle 0 4 1

9.

AUTOMATION CONTROL FUNCTIONS

Cold Load Pick Up Setting ranges

Level 100% 500% 1%

tCL 0.1 s 3600 s 0.1 s

9.2 Auxiliary timers (P126 & P127)

Auxiliary timer 2 associated to the logic Inputs Aux 1, Aux2 Auxiliary timers Setting ranges

tAux1 0 200s 0.01s

tAux2 0 200s 0.01s

9.3 Broken conductor detection (P126 & P127) Principle used I2/I1

9.3.1 Broken conductor detection setting ranges Broken Conductor Setting ranges Brkn.Cond Yes or No

Brkn.Cond 20% 100% 1%

Brkn.Cond Time 0 s 14400 s 1 s 9.4 Circuit breaker failure (P126 & P127)

9.4.1 CB Fail setting ranges

CB Fail Setting ranges

CB Fail Yes or No

CB Fail Time tBF 0 s 10 s 0.01 s 9.5 Trip circuit supervision (P126 & P127)

9.5.1 Trip circuit supervision setting ranges TC Supervision Setting ranges TC Supervision Yes or No

9.6 Circuit breaker control and monitoring (P126 & P127) 9.6.1 Setting ranges

CB Supervision Setting ranges CB Open S’vision Yes or No

CB Open time 0.05 s 1 s 0.01 s

CB Close S’vision Yes or No

CB Close time 0.05 s 1 s 0.01 s CB Open Alarm Yes or No

CB Open NB 0 50000 1

ΣAmps(n) 0 E6 A 4000 E6

A 1E6 A

n 1 2 1

CB Open pulse Yes or No

tOpen Pulse 0.1 s 5 s 0.1 s

tClose Pulse 0.1 s 5 s 0.1 s

9.7 AND logic equation (P126 & P127)

For the AND logic equations a setting value 1 assigns the function to the equation, a setting value 0 does not assign the function to equation.

9.7.1 Timer setting ranges AND LOGIC EQUAT Tdelay EQU. A Toperator 0 s 3600 s 0.1 s EQU. A Treset 0 s 3600 s 0.1 s EQU. B Toperator 0 s 3600 s 0.1 s EQU. B Treset 0 s 3600 s 0.1 s EQU. C Toperator 0 s 3600 s 0.1 s EQU. C Treset 0 s 3600 s 0.1 s EQU. D Toperator 0 s 3600 s 0.1 s EQU. D Treset 0 s 3600 s 0.1 s

10.

RECORDING FUNCTIONS (P126 & P127)

Capacity 75 events

Time-tag 1 millisecond

Triggers Any selected protection alarm and threshold

Logic input change of state Setting changes

Self test events 10.2 Fault recorder

Capacity 5 faults

Time-tag 1 millisecond

Triggers Any selected protection alarm and threshold

Data Fault date

Protection thresholds Setting Group

AC inputs measurements (RMS) Fault measurements

10.3 Disturbance recorder

10.3.1 Triggers; Data; Setting Ranges Disturbance

Record P126 P127

Triggers Any selected protection alarm and threshold, Logic input Remote command

Data AC input channels

Digital input and output states Frequency value

Default value Setting ranges

Pre-Time 2.5 2.5 0.1 3 0.1

Post-Time 0.5 0.5 0.1 3 0.1

11.

COMMUNICATION (P125, P126, P127)

Port positionRelay Physical Link Connectors Data Rate Protocol RS485 Rear port Screened twister

pair Screws orsnap-on 300 to 38400 baud(programmable) ModBus RTU,Courier, IEC60870-5-103, DNP3

RS232 Front port Screened twister

pair Sub–D 9 pinfemale connector

300 to 38400 baud

12.

CURVES

Although the curves tend towards infinite when the current approaches Is (general threshold), the minimum guaranteed value of the operating current for all the curves with the inverse time characteristic is 1.1Is (with a tolerance of ± 0,05Is.

12.1.1 Inverse Time Curves :

The first phases (earth) overcurrent threshold can be selected with a dependent time characteristic. The time delay is calculated with a mathematical formula.

In all, there are eleven inverse time characteristics available. The mathematical formula applicable to the first ten curves is :

(

)

÷

÷

_ø

ö

ç

ç

è

æ

+

−

×

=

L

I

I

K

T

t

1

Is Value of the programmed threshold (Pick-up value)

α constant

L ANSI/IEEE constant (zero for IEC curves) T Time Multiplier Setting

Type of curve Standard K factor αααα factor L factor

Short Time Inverse ALSTOM 0.05 0.04 0

Standard inverse IEC 0.14 0.02 0

Very inverse IEC 13.5 1 0

Extremely inverse IEC 80 2 0

Long time inverse ALSTOM 120 1 0

Short Time Inverse C02 0.02394 0.02 0.00169 Moderately Inverse ANSI/IEEE 0.0515 0.02 0.114

Long Time Inverse C08 5.95 2 0.18

Very Inverse ANSI/IEEE 19.61 2 0.491

Extremely Inverse ANSI/IEEE 28.2 2 0.1215 The RI curve has the following definition:

( )

K setting: from 0,10 to 10 in steps of 0,05. The equation is valid for 1.1≤ I/Is ≤ 20. 12.1.2 Reset timer

The first stage of the phase and earth overcurrent protections, negative sequence overcurrent and wattmetric/IeCos are provided with a timer hold facility "t Reset". It may be set to a definite time value or to an inverse time characteristic (IEEE/ANSI curves only). This may be useful in certain applications, for example when grading with upstream electromechanical overcurrent relays which have inherent reset time delays.

The second and third stages for the wattmetric/Iecos protection and earth fault overcurrent protection have a definite time reset.

A possible situation where the reset timer may be used is to reduce fault clearance times where intermittent faults occur.

An example may occur in a plastic insulated cable.

In this application it is possible that the fault energy melts and reseals the cable insulation extinguishing the fault.

The permanence of the fault current pulses reduce intervals between the pulses until the fault becomes permanent.

When the reset time of the relay is to minimum setting, the relay will be repeatedly reset and not be able to trip until the fault becomes permanent. By using the reset timer hold facility the relay will integrate the fault current pulses, thereby reducing fault clearance time.

The mathematical formula applicable to the five curves is:

(

)

÷

÷

_ø

ö

ç

ç

è

æ

−

×

=

I

I

K

T

t

1

K : Coefficient (see table)

I : Value of the measured current

Is : Value of the programmed threshold (pick-up value)

α: Coefficient (see table)

T : Reset Time Multiplier (Rtms) between 0.025 and 1.5. Type of curve Standard K factor αααα factor Short Time Inverse C02 0.02394 2 Moderately Inverse ANSI/IEEE 0.0515 2

Long Time Inverse C08 5.95 2

Very Inverse ANSI/IEEE 19.61 2 Extremely Inverse ANSI/IEEE 28.2 2

12.2 IDMT Curves 12.2.1 IEC Curves