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 TM 55-1905-220-14-5
3-62.2. VOLTAGE REGULATOR-MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
TEST (Cont)
3. Lightly touch the cut-
The assist of
out relay.
closing the
cut out relay
closes the
contacts. The
shunt winding
of the circuit
breaker is
continuous. If
the contacts do
not close, re-
place the reg-
ulator.
c.
Effic-
1. Clip one lead to the
iency
F terminal.
of the
insu-
2. Clip one lead to the
The lamp should
lators
regulator base
light.
on the
(ground).
strap
which
3. Open the voltage reg-
The lamp should
con-
ulator contacts by
go out.
nects
hand.
the
volt-
4. Close the current
The lamp should
age
regulator contacts.
go dim. If not,
regu-
replace the reg-
lator
ulator.
to the
current
regula-
tor
HOOK-UP FOR CHECKING EFFICIENCY OF INSULATORS
ON STRAP WHICH CONNECTS CURRENT AND VOLTAGE
REGULATOR UNITS. BULB SHOULD LIGHT. WHEN
THE VOLTAGE REGULATOR CONTACTS ARE OPENED
(BY HAND) LIGHT SHOULD GO OUT., CLOSING
CURRENT REGULATOR CONTACTS SHOULD CAUSE LIGHT
TO GO OUT OR DIM.
3-1108
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