MiCOM Line Differential Applications
MiCOM Line Differential Applications
 P532 |
Easergy™ MiCOM P532 - Line Differential Protection and Bay Control Device
Easergy MiCOM P532 provides a two-ended line differential protection function with all of the necessary protection communication interfaces.
Easergy MiCOM P532 is an inexpensive line differential protection device that features optional control functions for rapid and selective short-circuit and overload protection of cables and power lines.
It provides a rapid three-stage differential protection system using a tripping characteristic with multiple knee points amongst the numerous supplementary functions. The optional control functions enable Easergy MiCOM P532 to control up to six switchgear units fitted to a bay panel, and to monitor their contact positions.
 P541 / P542 / P543 / P544 / P545 / P546 |
Easergy MiCOM P54x - Line Differential Protection Relays
Easergy MiCOM P54x is designed for high performance overhead line and cable applications, it interfaces readily with the longitudinal (end to end) communications channels and has optional distance backup protection.
Models available:
-
MiCOM P541, P542, P543, P544, P545, P546
Easergy MiCOM P541-P546 series provides high-speed current differential unit protection. The P54x is designed for all overhead line and cable applications, as it interfaces readily with the longitudinal (end to end) communications channel between line terminals.
A full range of back-up protection is integrated. This enhances the dependability of the protection, as hot-standby elements (such as distance zones and overcurrent) can be brought into service whenever a signaling channel outage may occur.
Functions available for the different models of the Line Differential protection MiCOM range of relays
|
ANSI |
Protection Function |
P530C |
P532 |
P541 |
P542 |
P543 |
P544 |
P545 |
P546 |
P547 |
|---|---|---|---|---|---|---|---|---|---|---|
|
21 |
Distance |
● |
● |
● |
● |
● |
||||
|
25 |
Check synchronizing |
● |
● |
● |
● |
● |
● |
|||
|
37 |
Loss of load / undercurrent |
|||||||||
|
46 |
Negative sequence overcurrent |
● |
● |
● |
● |
● |
● |
|||
|
49 |
Thermal overload |
● |
● |
● |
● |
● |
● |
● |
● |
● |
|
50/51N |
Ground fault |
● |
● |
● |
● |
● |
● |
● |
● |
● |
|
50/51P |
Phase overcurrent |
● |
● |
● |
● |
● |
● |
● |
● |
● |
|
50BF |
Circuit breaker failure |
● |
● |
● |
● |
● |
● |
● |
● |
● |
|
59/27 |
Over / under voltage |
● |
● |
● |
● |
● |
● |
● |
||
|
64W |
Wattmetric ground fault |
● |
● |
● |
● |
● |
● |
● |
||
|
67N |
Ground fault directional |
● |
● |
● |
● |
● |
● |
● |
||
|
67N |
Sensitive directional ground fault |
● |
● |
● |
● |
● |
● |
|||
|
67P |
Phase directional |
● |
● |
● |
● |
● |
● |
● |
||
|
78 |
Power swing blocking |
● |
● |
● |
● |
● |
||||
|
79 |
Auto-reclose |
3 pole |
3 pole |
3 pole |
1/3 pole |
1/3 pole |
1/3 pole |
1/3 pole |
1/3 pole |
|
|
81 |
Under / over frequency |
● |
● |
● |
● |
● |
● |
|||
|
87L |
Line differential (terminal) |
2 |
2 |
2/3 |
2/3 |
2/3 |
2/3 |
2/3 |
2/3 |
|
|
87L |
Phase comparison |
● |
||||||||
|
CTS |
CT supervision |
● |
● |
● |
● |
● |
||||
|
TCS |
Trip circuit supervision |
● |
● |
● |
● |
● |
● |
● |
● |
● |
|
2 breaker configuration |
● |
● |
||||||||
|
2nd harmonic restraint |
● |
● |
● |
● |
● |
● |
● |
● |
||
|
Copper wire signaling |
● |
● |
||||||||
|
Direct / permissive inter tripping |
● |
● |
● |
● |
● |
● |
● |
● |
||
|
FO signaling |
● |
● |
● |
● |
● |
● |
● |
● |
||
|
In Zone transformer |
● |
● |
● |
● |
● |
● |
||||
|
PLC signaling |
● |
|||||||||
|
SDH / Sonet networks |
● |
● |
● |
● |
||||||
|
Vector compensation |
● |
● |
● |
● |
● |
● |
Typical Catalog Numbers
|
Catalog Number |
Description |
|
|---|---|---|
|
Basic Version |
P521A0GZ412DG0 |
Series 20 - Line differential Protection, P521 (24-250Vdc & 48-240Vac), 1/5A CT inputs, 5In/8Out (24-250 Vdc, 24-240Vac), 1300nm single-mode single channel, RS485, DNP |
|
Standard Version |
P54321RCBM0H98M |
Series 40 - Line differential Protection, P543 (48-110Vdc), 1/5A CT inputs, 16In/14Out (user configurable voltage thresholds), 1300nm single-mode dual channel, 3xRJ-45, IEC61850, DNP3 |
|
Advanced Version |
P54521RCBM0H98M |
Series 40 - Line differential Protection, P545 (48-110Vdc), 1/5A CT inputs, 24In/32Out (user configurable voltage thresholds), 1300nm single-mode dual channel, 3xRJ-45, IEC61850, DNP3 |