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48049-136-05 Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Rev. 01, 07/2012 Section 3—Operation
© 1999–2012 Schneider Electric All Rights Reserved
27-EN
ENGLISH
Equipment Ground-Fault Trip
Functions Testing
Paragraph 230-95 (c) of the National Electrical
Code requires that all equipment ground-fault
protection systems be tested when first installed.
With the circuit breaker closed, test the ground-
fault (Micrologic 6.0A trip unit only) trip
functions. For instructions on how to close circuit
breaker, refer to the circuit breaker installation
instructions shipped with the circuit breaker.
1. Press the ground-fault test button (A). Circuit
breaker should trip.
2. If circuit breaker does not trip, contact the
local field office.
NOTE: Trip unit must be powered to test ground-fault trip function. The trip
unit is powered if the circuit breaker is carrying more than 0.20 x In of load
current, if the 24 Vdc external power supply is connected or if the Full-
Function Test Kit or Hand-Held Test Kit is connected and on.
Figure 38: Test Equipment Ground-Fault Trip Function
Trip Unit Resetting
When the circuit breaker trips, the fault indicator
will remain lit until the trip unit is reset.
Press the reset/test button (A) to reset the trip
unit after trip.
Do not return circuit breaker to service until cause
of trip is determined. For more information, refer
to the circuit breaker installation instructions
shipped with the circuit breaker.
Figure 39: Reset Trip Unit
Trip Unit Status Check
NOTE: Trip unit must be powered to test battery. The trip unit is powered if
the circuit breaker is carrying more than 0.20 x In of load current, if the 24
Vdc external power supply is connected or if the Full-Function Test Kit or
Hand-Held Test Kit is connected and on.
To check trip unit battery and trip indicators,
press the test/reset button (A).
• All trip indicators (B) will light up
• Battery status will be displayed
• If no battery status is displayed, there is no
battery installed.
• The battery bar graph reading is valid after
the reset button has been released.
• If the battery bar graph shows the battery
needs to be changed, use Square D battery
catalog number S33593:
— lithium battery
— 1.2AA, 3.6 V, 800 ma/h
For instructions on replacing battery, see
Section 6—Battery Replacement.
Figure 40: Check Trip Unit Status
06134249
M
icro
log
ic
6.0 A
4
0
1
0
0
%
%
men
u
A
Microlo
g
ic 6.0
A
06133379
A
Microlo
g
ic 6.0
A
06133379
A
B
Charged
Half-Charged
Change Battery