Technical FAQs

Ask a Question

Video: How to set up, and test, Ground Fault alarm in Micrologic P and H trip units for PowerPact P, R and Masterpact NT, NW breakers

Configuring & Testing Ground Fault Alarm on Micrologic P & H Trip Units

Product Line:
P and H trip units for PowerPact P, R and Masterpact NT, NW
FFTK (S33595)
M2CTEST adapter

Mainly intended for 5.0P and 5.0H trip units, no Ground Fault trip function, Ground Fault alarm only.
However, this procedure will also work for 6.0P and 6.0H trip units that also have Ground Fault trip feature.
Programmable contacts (M2C or M6C) must also be installed.
No other trip unit types are included in this article.

The trip unit instruction by itself may not be clear on the exact sequence to program ground fault alarm.
Also a procedure is needed to test ground fault alarm without doing primary injection.

Setting up the Ground fault Alarm on a Micrologic 5.0P or 5.0H trip unit is a 3 step process: (Ref. Micrologic 5.0P instruction bulletin 48049-137-05.)
1.     Turning GF alarm on and setting the pickup/drop out levels, page 59.
2.     Assigning GF alarm to a M2C/M6C contact (alarm type), page 33.
3.     Setting up the alarm mode (setup): non-latching contact, page 35.

Please see attachment for a more detailed summary of 48049-137-05 instructions

Ground Fault Alarm test without using primary injection, using the full function test kit S33595 and the M2CTEST special tool adapter for the full function test kit:
Use the attached EAV34309 instructions for this testing procedure, general information, precautions, and proper connection.

Was this helpful?
What can we do to improve the information ?