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 |