CONSULTANT
EPC CONTRACTOR
PROJECT
EPC ELECTRICAL
CONTRACTOR
DOCUMENT TITLE
DOCUMENT NO.
REVISION
DATE
NO. OF SHEETS
PREPARED BY
CHECKED BY
APPROVED BY
**Sheets (Including
Title Sheet)
ARD
KBD
ABH
IKE-ISGEC-KWL61-DOC-233
00
11.10.2013
1x18 MW CO-GEN POWER PLANT
IKE ELECTRIC PVT. LTD.
601 - 602, MARIEGOLD NECO GARDENS,
VIMAN NAGAR,
PUNE - 411 014
MAHARASHTRA
INDIA
PHONE - 020 - 66290300 / 301
TELEFAX - 020 - 66290302
RELAY SETTING CHART FOR 33KV SWITCHYARD
M/s. JP MUKHERJI & ASSOCIATES PVT LTD, PUNE, MH
Sr.No
Protection
Description
Type ref.
Setting Range
Remarks
I
1
87GT, 64R, 99
Numerical Transformer
MICOM P 632
Differential Protection (87GT)
Protection Relay
Idiff>=0.1-2.5 Iref
Idiff>:0.1
LV: CTR: 500/1A
Idiff>=2.5-30 Iref
HV: CTR: 200/1 A
Idiff>>>=2.5-30 Iref
NCTR: *** A
m1: 0.15-1.5
m1: 0.2
m2: 0.15-1.5
m2: 0.7
IR,m2 (1.5-10.0 Iref)
4
Op.del, trip signal:0-100S
Restricted earthfault protection(64R)
Effective setting: 10%
10%In
High Impedance relay
NCTR: *** A
Stabilising resistor
(0-1000) Ohm
Rst: 200
ohm
2
50/51
Numerical
MICOM P341
Overcurrent protection (51)
IDMT
50N/51N
Interconnection
In: 0.08-4In
0.75*In
characterictics
67/67N, 50LBB
Protection Relay
T: 0-100 sec
0.1
sec
3 Sec Curve
78, 27Z, 59, 81
60, 81R, 99, 27
Inst. Overcurrent protection (50)
In: 0.08-32In
6*In
CTR: 200/1A
T: 0-100 sec
0
sec (Inst)
PTR: 33KV/110V
Earth fault protection (51N)
IDMT
Ie: 0.08-4In
0.2*In
characterictics
T: 0-100 sec
0.1
Sec
3 Sec Curve
Inst.Earth fault protection (50N)
Ie: 0.08-4In
0.3*In
T: 0-100 sec
0.5
sec
33KV Transformer Control and Relay Panel
Sr.No
Protection
Description
Type ref.
Setting Range
Remarks
33KV Transformer Control and Relay Panel
Recommended Setting
Dir. Overcurrent protection (67)
In: 0.08-32In
0.75*In
RCA: 30 deg
T: 0-100 sec
0.35
sec
Dir. Earth fault protection (67N)
Ie: 0.08-32In
0.1*In
RCA: 45 deg
T: 0-100 sec
0.35
sec
Under volatge protection (27)
U<: 10-120V
80
V
T: 0-100 sec
2
sec
Over voltage protection (59)
U>: 60-185V
121
V
T: 0-100 sec
3
sec
Under frequency protection (81U)
f<: 45-65Hz
47.7
Hz
PTR: 33KV/110V
T: 0-100 sec
2
sec
Over frequency protection (81O)
f>: 45-65Hz
52
Hz
T: 0-100 sec
2
sec
Local Breaker back-up protection (50LBB)
In: 0.4-4*In
1*In
CTR: 200/1A
Time delay
0.3
sec
df/dt protection (81R)
df/dt: 0.1-10Hz/sec
4
Hz/ sec
Sr.No
Protection
Description
Type ref.
Setting Range
Remarks
33KV Transformer Control and Relay Panel
Recommended Setting
Dead band lower frequency
45-65Hz
49
Hz
Dead band upper frequency
45-65Hz
51
Hz
Voltage Balance Relay (60)
***
***
Overfluxing Protection Relay (99)
***
***
Vector surge protection (78)
dv/dt: 2-30 deg
7
deg
Standby Earth fault protection (51G)
Ie: 0.08-4In
0.3 * In
CTR: 200/1 A
T: 0-100 sec
0.3
Sec
IDMT curve (3 sec)
3
50/51
Numerical
MICOM P111L
IDMT overcurrent protection (51)
50N/51N
protection relay
In: 0.08-4In
0.9 * In
(LV side of GT)
TMS: 0.025-1
0.1
Sec
IDMT curve (3 sec)
Inst. Overcurrent protection (50)
In: 0.08-32In
6 * In
CTR: 500 / 1 A
Sr.No
Protection
Description
Type ref.
Setting Range
Remarks
33KV Transformer Control and Relay Panel
Recommended Setting
IDMT Earth fault protection (51N)
Ie: 0.08-4In
0.2 * In
IDMT curve (3 sec)
TMS: 0.1-1
0.3
Sec
Inst.Earth fault protection (50N)
Ie: 0.08-4In
0.3 * In
T: 0-100 sec
0.3
Sec
4
27, 59
Numerical
MICOM P921
Under voltage protection (27)
59D
protection relay
U<: 10-120V
0.8
T: 0-100 sec
0.5
sec
Over voltage protection (59)
U>: 60-185V
1.1
T: 0-100 sec
0.5
sec
Neutral displacement protection (59DLV)
V: 5.4 -20V
5.4
V
TMS
0.1
sec
NOTE: a) All settings are referred with respect to secondary values.
CONSULTANT
EPC CONTRACTOR
PROJECT
EPC ELECTRICAL
CONTRACTOR
DOCUMENT TITLE
DOCUMENT NO.
REVISION
DATE
NO. OF SHEETS
PREPARED BY
CHECKED BY
APPROVED BY
**Sheets (Including
ARD
KBD
ABH
RELAY SETTING CHART FOR 132KV SWITCHYARD
M/s. JP MUKHERJI & ASSOCIATES PVT LTD, PUNE, MH
M/s. ISGEC HEAVY ENGINEERING LTD, NOIDA, UP
IKE-ISGEC-KWL61-DOC-133
00
11.10.2013
1x18 MW CO-GEN POWER PLANT
IKE ELECTRIC PVT. LTD.
601 - 602, MARIEGOLD NECO GARDENS,
VIMAN NAGAR,
PUNE - 411 014
MAHARASHTRA
INDIA
PHONE - 020 - 66290300 / 301
TELEFAX - 020 - 66290302
Sr.No Protection Description Type ref. Setting Range Remarks I
1 87GT, 64R, 99 Numerical Transformer MICOM P 632 Differential Protection (87GT)
Protection Relay Idiff>=0.1-2.5 Iref Idiff>:0.1 LV: CTR: 1500/1A
Idiff>=2.5-30 Iref HV: CTR: 150/1 A
Idiff>>>=2.5-30 Iref NCTR: *** A
m1: 0.15-1.5 m1: 0.2
m2: 0.15-1.5 m2: 0.7
IR, m2 (1.5-10.0 Iref) 4
Op.del, trip signal:0-100S
Restricted earthfault protection(64R)
Effective setting: 10% 10%In
High Impedance relay NCTR: *** A
Stabilising resistor
(0-1000) Ohm Rst:200 ohm
2 50/51 Numerical MICOM P341 Overcurrent protection (51) IDMT
50N/51N Interconnection In: 0.08-4In 0.75*In characterictics
67/67N, 50LBB Protection Relay T: 0-100 sec 0.1 3 Sec Curve
78, 27Z, 59, 81
60, 81R, 99, 27 Inst. Overcurrent protection (50)
In: 0.08-32In 6*In CTR: 150/1A
T: 0-100 sec 0 sec (Inst) PTR: 132KV/110V
Earth fault protection (51N) IDMT
Ie: 0.08-4In 0.2*In characterictics
T: 0-100 sec 0.1 Sec 3 Sec Curve
Inst.Earth fault protection (50N)
Ie: 0.08-4In 0.3*In
T: 0-100 sec 0.5 sec
132KV Transformer Control and Relay Panel
Sr.No Protection Description Type ref. Setting Range Remarks 132KV Transformer Control and Relay Panel
Recommended Setting
Dir. Overcurrent protection (67)
In: 0.08-32In 0.75*In RCA: 30 deg
T: 0-100 sec 0.35 sec
Dir. Earth fault protection (67N)
Ie: 0.08-32In 0.1*In RCA: 45 deg
T: 0-100 sec 0.35 sec
Under volatge protection (27)
U<: 10-120V 80 V
T: 0-100 sec 2 sec
Over voltage protection (59)
U>: 60-185V 121 V
T: 0-100 sec 3 sec
Under frequency protection (81U)
f<: 45-65Hz 47.7 Hz PTR: 132KV/110V
T: 0-100 sec 2 sec
Over frequency protection (81O)
f>: 45-65Hz 52 Hz
T: 0-100 sec 2 sec
Local Breaker back-up protection (50LBB)
In: 0.4-4*In 1*In CTR: 150/1A
Time delay 0.3 sec
df/dt protection (81R)
df/dt: 0.1-10Hz/sec 4 Hz/ sec
Sr.No Protection Description Type ref. Setting Range Remarks 132KV Transformer Control and Relay Panel
Recommended Setting
Dead band lower frequency
45-65Hz 49 Hz
Dead band upper frequency
45-65Hz 51 Hz
Voltage Balance Relay (60) ***
***
Overfluxing Protection Relay (99) ***
***
Vector surge protection (78)
dv/dt: 2-30 deg 7 deg
Standby Earth fault protection (51G)
Ie: 0.08-4In 0.3 * In CTR: 150/1 A
T: 0-100 sec 0.3 Sec IDMT curve (3 sec)
3 50/51 Numerical MICOM P111L IDMT overcurrent protection (51)
50N/51N protection relay In: 0.08-4In 0.7 * In
(LV side of GT) TMS: 0.025-1 0.1 Sec IDMT curve (3 sec)
Inst. Overcurrent protection (50)
In: 0.08-32In 6 * In CTR: 1500 / 1 A
Sr.No Protection Description Type ref. Setting Range Remarks 132KV Transformer Control and Relay Panel
Recommended Setting
IDMT Earth fault protection (51N)
Ie: 0.08-4In 0.2 * In IDMT curve (3 sec)
TMS: 0.1-1 0.3 Sec
Inst.Earth fault protection (50N)
Ie: 0.08-4In 0.3 * In
T: 0-100 sec 0.3 Sec
4 50/51 Numerical MICOM P127 IDMT overcurrent protection (51)
50N/51N protection relay In: 0.08-4In 0.7 * In
(HV side of GT) TMS: 0.025-1 0.1 Sec IDMT curve (3 sec)
Inst. Overcurrent protection (50)
In: 0.08-32In 6 * In CTR: 1500 / 1 A
T: 0-100 sec 0 Sec PTR: 132kV / 110 V
IDMT Earth fault protection (51N)
Ie: 0.08-4In 0.2 * In IDMT curve (3 sec)
TMS: 0.1-1 0.3 Sec
Inst.Earth fault protection (50N)
Ie: 0.08-4In 0.3 * In
T: 0-100 sec 0.3 Sec
5 27, 59 Numerical MICOM P921 Under voltage protection (27)
59D protection relay U<: 10-120V 0.8
T: 0-100 sec 0.5 sec
Over voltage protection (59)
U>: 60-185V 1.1
T: 0-100 sec 0.5 sec
Neutral displacement protection (59DLV)
V: 5.4 -20V 5.4 V
