Effective 11/2003
Page 33
I.L. 66A7535H02
e. Connect the Auxilary Power Module to the Digitrip
1150V’s connector in the upper right hand corner of the
unit
(See Figure 5.2).
IMPORTANT:
Do the following test even if ground fault is
to be set to
OFF
or Zero Sequence Sensing is chosen for
the final application.
Test Procedure:
TEST 1. Close circuit breaker and ramp up current using
the
Output Control
knob of MS-2 and by setting selector
Figure 5.2 Auxiliary Power Module
Figure 5.1 AVO MultiAmp
®
MS-2 Test Source
switch to the
Maintain
position. At about 30% of the
Rating Plug value, check the Meter Menu for a Phase and
Ground current of 30% Rating Plug value.
TEST 2. Continue ramping up current and the circuit
breaker should trip via ground element between 40 to 50%
of plug rating.
This test arrangement checks both the phase current
sensor and the residual ground element since a single pole
is energized.
(See Figure 5.3)
TEST 3. Repeat Test 1 and 2 on other two poles.
