186-9497-0015
MiCOM Generator Applications

MiCOM Generator Applications

P342 / P343 / P344 / P345

The Easergy™ MiCOM P34x generator protection relays provide flexible and reliable integration of protection, control, monitoring and measurement functions for small, medium and large generators.

Models available:

  • MiCOM P342

  • MiCOM P343

  • MiCOM P344

  • MiCOM P345


P34x range covers small generators with all necessary industry standard protection and increasing through larger or more important generators with 100% stator ground fault protection via a 3rd harmonic measuring technique, pole slipping and unintentional energization at standstill protection.

Advanced models in the range offer leading techniques for large generators including second neutral voltage inputs for ground fault/inter-turn protection and 100% stator ground fault protection via a low frequency injection technique.

Functions available for the different models of the Generator protection MiCOM range of relays

ANSI

Protection Function

P342

P343

P344

P345

21

Under-impedance

●

●

●

●

24

Overexcitation

 

●

●

●

25

Check synchronizing

●

●

●

●

27TN/59TN

100% stator ground fault (3rd)

●

●

●

●

32L/O/R

Directional power

●

●

●

●

37N/37P

Sensitive phase and ground fault undercurrent

●

●

●

●

38/49

Thermal overload

●

●

●

●

40

Loss of field

●

●

●

●

460C

Negative sequence overcurrent

●

●

●

●

46T

Negative sequence thermal

●

●

●

●

47

Negative sequence over voltage

●

●

●

●

49T

Thermal overload

●

●

●

●

50/27

Unintentional energization

 

●

●

●

50/51P

Phase overcurrent

●

●

●

●

50BF

Circuit breaker failure

●

●

●

●

50N/51N

Ground fault

●

●

●

●

50DT

Interturn / split phase

 

●

●

●

51V

Voltage dependent O/C

●

●

●

●

59/27

Under / over voltage

●

●

●

●

59N

Residual over voltage

●

●

●

●

64

Restricted ground fault

●

●

●

●

64N/32N

Wattmetric ground fault

●

●

●

●

64R

Rotor ground fault (MiCOM P391 option)

●

●

●

●

64S

100% stator ground fault (low frequency)

   

●

67N

Sensitive directional ground fault

●

●

●

●

67P

Phase directional

●

●

●

●

67W

Wattmetric sensitive ground fault

●

●

●

●

78

Pole slipping

 

●

●

●

81AB

Turbine abnormal frequency

●

●

●

●

81

Under / over frequency

●

●

●

●

87G/87GT

Generator differential

 

●

●

●

CTS

Current transformer supervision

●

●

●

●

TCS

Trip circuit supervision

●

●

●

●

VTS

Voltage transformer supervision

●

●

●

●


Circuit breaker monitoring

●

●

●

●

Typical Catalog Numbers

Catalog Number

Description

Basic

P34221RBBM0B38L

Series 40 - Generator Protection, P342 (48-110Vdc), 1/5A CT inputs, 8In/7Out (user configurable voltage thresholds), 10 RTD's, 3xRJ-45, IEC61850, DNP3

Standard

P34321RBBM0B38M

Series 40 - Generator Protection, P342 (48-110Vdc), 1/5A CT inputs, 16In/14Out (user configurable voltage thresholds), 10 RTD's, 3xRJ-45, IEC61850, DNP3

Advanced

P34521RBBM0B38M

Series 40 - Generator Protection, P345 (48-110Vdc), 1/5A CT inputs, 24In/24Out (user configurable voltage thresholds), 10 RTD's, 3xRJ-45, IEC61850, DNP3

  Tel

  18694970015

  Email

  sales@njzndq.com 

     WeChat 

   

WeChat QR code
Nanjing Zhuneng Electric Co., Ltd

Mobile number: 18694970015

WeChat: power1411913

Email: sales@njzndq.com

Address: Building 16, Liandong U Valley Industrial Park, No.24 XuefuRoad, Jiangbei New District, Nanjing, Jiangsu, China

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