MiCOM Busbar Applications
MiCOM Busbar Differential Applications
 P741 / P742 / P743 / P746 |
Numerical Busbar Protection Relay Scheme (Centralized)
Easergy™ MiCOM P746 numerical busbar protection provides centralized complete protection for all voltages level up to extra high voltage busbar configurations.
Models available:
-
MiCOM P746
Simple configuration for centralized architecture. The Easergy MiCOM P746 differential busbar protection provides a centralized one box or three boxes architecture and is very simple to use.
It does not need to be deeply engineered and supports easy operation and maintenance of the busbar.
Numerical Busbar Protection Relay Scheme (Distributed)
The Easergy MiCOM P740 numerical busbar protection scheme provides scalable and complete protection for all voltage levels, from low to extra or ultra high-voltage busbar configurations.
Models available:
-
MiCOM 741
-
MiCOM 742
-
MiCOM 743
Easergy MiCOM P740 is one of the fastest and complete in its class, providing secure and sensitive protection for all types of voltage busbar configurations. It is easily adapted to any configuration and can operate with different types of CT.
Functions available for the different models of the Busbar protection MiCOM range of relays
|
ANSI |
Protection Function |
P741 |
P742 |
P743 |
P746 |
|---|---|---|---|---|---|
|
50N/51N |
Ground fault |
● |
● |
● |
|
|
50/51P |
Phase overcurrent |
● |
● |
● |
|
|
50BF |
Circuit breaker failure |
● |
● |
● |
● |
|
87BB |
Busbar |
● |
● |
● |
● |
|
87CZ |
Check Zones |
● |
● |
||
|
87P |
Phase segregated differential |
8 zones |
4 zones |
||
|
87P |
Sensitive ground fault differential |
8 zones |
|||
|
CTS |
Current transformer supervision |
● |
● |
● |
● |
|
TCS |
Trip circuit supervision |
● |
● |
● |
● |
|
VTS |
Voltage transformer supervision |
● |
● |
● |
|
|
Phase comparison |
● |
||||
|
CT saturation detection |
● |
● |
|||
|
CT supervision |
● |
● |
● |
Typical Catalog Numbers
|
Catalog Number |
Description |
|
|---|---|---|
|
Advanced — Low impedance Busbar
Differential |
P74622RABM0C48M |
Series 40 - Low Impedance bus differential (7 sets of CT's) Protection, P746 (48-110Vdc), 1/5A CT inputs, 16In/16Out (user configurable voltage thresholds), 3xRJ-45, IEC61850, DNP3 |