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PLANT ELECTRICAL SYSTEM

NOTES :

1. This document lists the recommended settings for various protections as per requirement. However, in Siemens relays all other functions such as monitoring and measurement shall be set at site. Further, address details of each function shall be site verified as per relay manual.

2. Settings for relays in DG Breaker panel and DG Controller PCC 3100 shall be done by DG vendor M/s Powerica.

04

Aker Powergas Pvt. Ltd.

03 02

01 CLIENT : HINDUSTAN TITLE : PROTECTION UNILEVER LTD. SETTINGS CALCULATIONS

SPA NEJ 00

11/11/09 11/11/09 ISSUED FOR ENGINEERING DOC NO.1607/4000/CAL007

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Page 2 of 29 P05 - STR53UE L 0.8 In 1 Io 0.4, 2, 4, 8, 16 sec 2 sec S 6 In 0, 0.1, 0.2, 0.3 sec 0.1 sec I Ii 10 In No time delay G 0.3 In 0.1 sec

Rating Make Type

400A O/G Feeder 11F3, 12F3, 13F3, 14F3, 1F3, 2F3, 4F3, 5F3 Merlin Gerin I 0 0.5, 0.63, 0.7, 0.8, 0.9, 1 times In Ir 0.8, 0.85, 0.88, 0.9, 0.93, 0.95, 0.98, 1 times Io tr @ 6 Ir Isd 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10 times Ir tsd I2 t function is turned off 1.5, 2, 3, 4, 6, 8, 10, 11 times In Ig 0.2, 0.3, 0.4, 0.6, 0.8, 1 times In tg 0.1, 0.2, 0.3, 0.4 sec

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Panel No CT Ratio Setting Function Range Available Remarks Breaker No. Feeder (breaker) Rating Feeder Nos Relay / Release Make Relay / Release Type Setting

Parameter Recommended Settings

P05 - STR53UE L 0.8 In 1 Io 0.4, 2, 4, 8, 16 sec 2 sec S 6 In 0, 0.1, 0.2, 0.3 sec 0.1 sec I Ii 10 In No time delay G 0.3 In 0.1 sec 630A O/G Feeder 8F1, 8F2, 9F1, 9F2, 11F1, 11F2, 12F1, 12F2, 13F1, 13F2, 14F1, 14F2, 1F1, 1F2, 2F1, 2F2, 4F1, 4F2, 5F1, 5F2 Merlin Gerin I 0 0.5, 0.63, 0.7, 0.8, 0.9, 1 times In Ir 0.8, 0.85, 0.88, 0.9, 0.93, 0.95, 0.98, 1 times Io tr @ 6 Ir Isd 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10 times Ir tsd I2 t function is turned off 1.5, 2, 3, 4, 6, 8, 10, 11 times In Ig 0.2, 0.3, 0.4, 0.6, 0.8, 1 times In tg 0.1, 0.2, 0.3, 0.4 sec

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Page 4 of 29

Rating Make Type

P05 - Siemens ETU27B L 0.4 - 1.0 In 0.55 In S 1.25 - 12 In 1.25 In 0 - 0.4 sec 0.3 sec I Ii 20 In (fixed) 20 In (fixed) G 0.1 - 0.5 sec 0.1 sec 1250A O/G Feeder 7F1, 7F2 IR tR 10 sec @ 6 IR 10 sec @ 6 IR Isd tsd

Ig A-100A, B-300A, C-600A, D-900A, E-1200A

Trip : C - 600 A Alarm : B - 300 A tg

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Panel No CT Ratio Setting Function Range Available Remarks Breaker No. Feeder (breaker) Rating Feeder Nos Relay / Release Make Relay / Release Type Setting

Parameter Recommended Settings

3200A P05 3200/1A Siemens 7SJ600 Rated current 1 or 5A 1 A

Incomer BUS-A 11F1 Rated frequency 50 or 60Hz 50Hz

BUS-B 3F1 I> 2.5

T I> 0 to 60 sec 0.25

I>> Blocked

T I>> 0 to 60 sec Blocked

I>>> Blocked

O/C Pickup- Ip

Characteristics IEC or ANSI IEC-Very Inverse

TMS - Tp 0.05 to 3.2 sec 0.25 0.15 0 to 60 sec 0.2 Blocked 0 to 60 sec Blocked IE>>> Blocked O/C Pickup- Ip

Characteristics IEC or ANSI IEC-Normal Inverse

TMS - Tp 0.05 to 3.2 sec 0.3 IN fN Definite Time Overcurrent Phase Protection - 50 0.1 to 25 IN 0.1 to 25 IN Inverse Time Overcurrent Phase Protection - 51 0.1 to 4 IN 1 IN Definite Time Overcurrent Earth Protection - 50N IE> 0.05 to 25 IN T IE> IE>> 0.05 to 25 IN T IE>> Inverse Time Overcurrent Earth Protection - 51N 0.05 to 4 IN 0.1 IN

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Page 6 of 29

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Panel No CT Ratio Setting Function Range Available Remarks Breaker No. Feeder (breaker) Rating Feeder Nos Relay / Release Make Relay / Release Type Setting

Parameter Recommended Settings

3200A P05 3200/1A Areva CAG-14 REF Protection Pickup Current 10 to 40% 10%

Incomer BUS-A 11F1 Stab Resi 0 to 1000 ohm 740 ohms

BUS-B 3F1 3200/5A Areva CDG-11 SBEF Protection Current setting 10 to 40% 40%

TMS 0.1 to 1.0 0.4

110V Ph-Ph Areva VAGM22 U/V Protection

Rated voltage Vn 110V

U/V setting Vs 40% to 80% 80%

Areva VTT11 Time Delay for U/V

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MCC404-A1 630A O/G P05 20F1 - SIEMENS ETU42

L 0.4 - 1.0 In 0.4 In

MCC404-A2 Feeder 19F1 2.5 to 30 sec 2.5 sec

MCC404-A8 17F1 S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

MCC404-A7 630A O/G P05 18F1 - SIEMENS ETU42

L 0.4 - 1.0 In 0.5 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay Type Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off

(9)

Panel No CT Ratio Setting Function Range Available Remarks Feeder

Description Feeder Rating Feeder Nos Release MakeRelay /

Relay / Release Type

Setting

Parameter Recommended Settings

G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

8-X-902 630A O/G P05 14F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.85 In

8-X-904 Feeder 16F1 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.5 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg

(10)

Type

8-X-903B 630A O/G P05 15F1 - SIEMENS ETU42

L 0.4 - 1.0 In 0.8 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.5 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

8-X-905A 630A O/G P05 14F1 - SIEMENS ETU42

L 0.4 - 1.0 In 1 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off

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Panel No CT Ratio Setting Function Range Available Remarks Feeder

Description Feeder Rating Feeder Nos Release MakeRelay /

Relay / Release Type

Setting

Parameter Recommended Settings

I Ii 1.25 - 11 In 1.6 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

MCC404-A5 400A O/G P05 18F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.6 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig t

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Type

MCC404-A9 400A O/G P05 16F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.6 In Feeder 17F2 2.5 to 30 sec 2.5 sec S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.75 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

MCC404-A3 250A O/G P05 20F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.4 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 2 Ir Ir AHU-1 & 8-AHU-2 tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir Isd

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Panel No CT Ratio Setting Function Range Available Remarks Feeder

Description Feeder Rating Feeder Nos Release MakeRelay /

Relay / Release Type

Setting

Parameter Recommended Settings

S 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

MCC404-A4 250A O/G P05 20F3 - SIEMENS ETU42

L 0.4 - 1.0 In 0.4 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off

(14)

Type G

0.4 - 1.0 In 0.4 In

0.1 to 0.5 sec 0.1 sec

MCC404-A6 250A O/G P05 19F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.45 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 2 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

LTG-TR-01 250A O/G P05 19F3 - SIEMENS ETU42

L 0.4 - 1.0 In 0.75 In

Feeder 2.5 to 30 sec 2.5 sec

Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir

(15)

Panel No CT Ratio Setting Function Range Available Remarks Feeder

Description Feeder Rating Feeder Nos Release MakeRelay /

Relay / Release Type

Setting

Parameter Recommended Settings

S 1.5 - 10 Ir 2 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 3.5 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

VFD-U-1 250A O/G P05 15F3 - SIEMENS ETU42

L 0.4 - 1.0 In 0.6 In

VFD-U-3 Feeder 14F3 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.75 In No time delay G Method-1 Isd tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off

(16)

Type G I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

MCC404-B1 630A O/G P05 7F1 - SIEMENS ETU42

L 0.4 - 1.0 In 0.4 In

MCC404-B10 Feeder 1F1 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg

(17)

Panel No CT Ratio Setting Function Range Available Remarks Feeder

Description Feeder Rating Feeder Nos Release MakeRelay /

Relay / Release Type

Setting

Parameter Recommended Settings

MCC404-B2 630A O/G P05 7F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.5 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

MCC404-B7 630A O/G P05 8F1 - SIEMENS ETU42

L 0.4 - 1.0 In 0.6 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.5 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off

(18)

Type G

0.4 - 1.0 In 0.4 In

0.1 to 0.5 sec 0.1 sec

8-X-903A 630A O/G P05 6F1 - SIEMENS ETU42

L 0.4 - 1.0 In 0.85 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.5 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

8-X-905B 630A O/G P05 5F1 - SIEMENS ETU42

L 0.4 - 1.0 In 1 In

8-X-905C Feeder 2F1 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off

(19)

Panel No CT Ratio Setting Function Range Available Remarks Feeder

Description Feeder Rating Feeder Nos Release MakeRelay /

Relay / Release Type

Setting

Parameter Recommended Settings

I Ii 1.25 - 11 In 1.6 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

MCC404-B6 400A O/G P05 5F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.4 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg

(20)

Type

MCC404-B8 400A O/G P05 2F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.7 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.5 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

400A O/G P05 6F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.6 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.75 In No time delay Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg AHU-3 & 8-AHU-4 Ir tr @ 6 Ir Isd tsd I2 t function is turned off

(21)

Panel No CT Ratio Setting Function Range Available Remarks Feeder

Description Feeder Rating Feeder Nos Release MakeRelay /

Relay / Release Type

Setting

Parameter Recommended Settings

G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

MCC404-B3 250A O/G P05 7F3 - SIEMENS ETU42

L 0.4 - 1.0 In 0.4 In

MCC404-B5 Feeder 8F3 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 2 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg

(22)

Type

MCC404-B4 250A O/G P05 6F3 - SIEMENS ETU42

L 0.4 - 1.0 In 0.4 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

MCC404-B9 250A O/G P05 5F3 - SIEMENS ETU42

L 0.4 - 1.0 In 0.75 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.75 Ir 0 to 0.5 sec 0.2 sec Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off

(23)

Panel No CT Ratio Setting Function Range Available Remarks Feeder

Description Feeder Rating Feeder Nos Release MakeRelay /

Relay / Release Type

Setting

Parameter Recommended Settings

I Ii 1.25 - 11 In 2.25 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

VFD-U-2 250A O/G P05 1F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.6 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.75 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig t

(24)

Type

LTG-TR-02 250A O/G P05 2F3 - SIEMENS ETU42

L 0.4 - 1.0 In 0.75 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 2 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 3.5 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec

8-BCP-1 125A O/G P05 9F2 - SIEMENS ETU42

L 0.4 - 1.0 In 0.25 In

Feeder 2.5 to 30 sec 2.5 sec

S 1.5 - 10 Ir 2 Ir 0 to 0.5 sec 0.2 sec Ir tr @ 6 Ir Isd tsd I2 t function is turned off Ig tg Ir tr @ 6 Ir Isd tsd I2 t function is turned off

(25)

Panel No CT Ratio Setting Function Range Available Remarks Feeder

Description Feeder Rating Feeder Nos Release MakeRelay /

Relay / Release Type

Setting

Parameter Recommended Settings

I Ii 1.25 - 11 In 3.5 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In 0.1 to 0.5 sec 0.1 sec P05 9F1 - SIEMENS ETU42 L 0.4 - 1.0 In 0.9 In 13F1 2.5 to 30 sec 2.5 sec S 1.5 - 10 Ir 1.5 Ir 0 to 0.5 sec 0.2 sec I Ii 1.25 - 11 In 1.6 In No time delay G Method-1 I∆n 0.4 - 1.0 In NA Method-2 0.4 - 1.0 In 0.4 In Ig tg 412-CAP

PNL-02 1250A O/G Feeder Ir

412-CAP PNL-01 tr @ 6 Ir Isd tsd I2 t function is turned off I

(26)

Type

0.1 to 0.5 sec 0.1 sec tg

(27)

Swbd No. Setting Function Range Available Remarks 1250A 33kV O/G

50/5A Siemens 7SJ600 Rated current 1 or 5A 5 A Back-up O/C & E/F

Feeder to Rated frequency 50 or 60Hz 50Hz

Tr-05 1 I>

Tr-06 3 T I> 0 to 60 sec 0 sec

I>> Blocked

T I>> 0 to 60 sec Blocked

I>>> Blocked

O/C Pickup- Ip

Characteristics IEC or ANSI IEC-Very Inverse

TMS - Tp 0.05 to 3.2 sec 0.4

0 to 60 sec 0.1 sec

0 to 60 sec 0 sec

Blocked O/C Pickup- Ip

Characteristics IEC or ANSI

TMS - Tp 0.05 to 3.2 sec 0.15 Feeder (breaker) Rating Feeder Nos RatioCT Relay / Release Make Relay / Release Type Setting

Parameter Recommended Settings IN fN Definite Time Overcurrent Phase Protection - 50 0.1 to 25 IN 11.5 IN 0.1 to 25 IN Inverse Time Overcurrent Phase Protection - 51 0.1 to 4 IN 0.9 IN Definite Time Overcurrent Earth Protection - 50N IE> 0.05 to 25 IN 0.8 IN T IE> IE>> 0.05 to 25 IN 6 IN T IE>> IE>>> Inverse Time Overcurrent Earth Protection - 51N 0.05 to 4 IN 0.1 IN IEC-Standard (Normal) Inverse

(28)

Page 28 of 29

Rating Nos Ratio Make Type Parameter Settings

1250A 33kV I/C 2

100/5A Siemens 7SJ680 Rated current 1 or 5A 5 A Back-up O/C & E/F

Feeder Rated frequency 50 or 60Hz 50Hz

I> Blocked

T I> 0 to 60 sec Blocked

I>> Blocked

T I>> 0 to 60 sec Blocked

I>>> Blocked

O/C Pickup- Ip

Characteristics IEC or ANSI IEC-Very Inverse

TMS - Tp 0.05 to 3.2 sec 0.3

0 to 60 sec 0.2 sec

0 to 60 sec 0 sec

Blocked O/C Pickup- Ip

Characteristics IEC or ANSI

TMS - Tp 0.05 to 3.2 sec 0.3 110V 110V 40% to 80% 0.8 IN fN Definite Time Overcurrent Phase Protection - 50 0.5 to 175 IN 0.5 to 175 IN Inverse Time Overcurrent Phase Protection - 51 0.5 to 20 IN 4 IN Definite Time Overcurrent Earth Protection - 50N IE> 0.25 to 175 IN 0.8 IN T IE> IE>> 0.25 to 175 IN 6 IN T IE>> IE>>> Inverse Time Overcurrent Earth Protection - 51N 0.25 to 20 IN 0.4 IN IEC-Standard (Normal) Inverse U/V Protection - 27 Rated voltage Vn U/V setting Vs Time Delay for

(29)

CT Ratio Setting Title Recommended Settings Remarks

WTI Alarm -

-WTI Trip -

-These seetings are recommended by transformer manufacturer, Voltamp considering 50% to 60% loading of transformer. Feeder (breaker) Rating Relay / Release Make Relay / Release Type Setting

Parameter AvailableRange

850C

References

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