Electrical Test Instruments MAC-20 - Page 24

Electrical Test
lnstruments MAC-20
Retrofit Package
Section
lll
-
Operating
lnstructions
lnstantaneous
Trip Time
Test
1. Perform
lnstantaneous
Pickup
Test as outlined
2.
Adjust controls
to obtain
current above
pickup,
above.
at
approximate
desired
multiple of
rating.
3. Close
breaker
under test.
4.
Press the INITIATE
button.
Breaker should trip
5. Read
and record timer
and ammeter
readings
current.
6.
Shut down
test set, disconnect
breaker,
and
prepare
for subsequent
testing
or
relocation
according
to steps
20 through
25 in
general
procedures
outlined above.
Electrical
Test lnstruments. lnc.
Page
lll-6
insta nta
n eous ly.
as
instantaneous
trip time and
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