Download TM 5-6115-465-34

TM5-6115-465-34
TO35C2-3-446-2
NAVFAC P-8-625-34
TM06858B/06859D-34
Figure 5-24.
Under Voltage Relay Test Circuit
(b) Activate power source G1 and adjust
.
output voltage to 120 Vac at 50 Hz.
(c) Activate power source G2.
(d) Close switches S1 and S2.
(e) Test lamp DS1 shall illuminate, and
test lamp DS2 shall remain extinguished.
(f) Vary output frequency of power source
G1 from 50 to 450 Ha. There shall be no change in
test lamp illumination.
(g) Slowly decrease output voltage of
power source G1 to l00 Vac. Vary output frequency
from 350 to 450 Hz. Test lamp DS1 shall remain
illuminated and test lamp DS2 shall remain extinguished.
and test lamp DS2 shall illuminate. Set outputfrequency above 9S Vac ad mommtarily open switches
S1 and allow relay to reset.
(j) Repeat steps (i) for frequencies of 60,
70, and 100 Hz.
(k) Set output frequency of power source
G1 to 350 Hz. Slowly decrease output voltage to
90 Vet. DS1 shall extinguish end DS2 shall illuminate. Return output voltage to 120 Vac and
momentarily open switch S1, allowing relay to re set.
(l) Repeat step (k) for output frequency of
400 and 450 Hz.
(9) Test under frequency relay as follow:
(a) Install relay in test circuit shown in
figure 5-25.
(h)Slowly decrease output voltage of
power source G1 to 95 Vat. Vary frequency from
50 to 100 Hz. DS1 shall reamain illuminated and DS2
shall remain extinguished.
(b) Activate power source G1 and G2 and
adjust output frequency to 50 Hz (400 Hz for 400 HZ
units).
(i) Set output frequency of power source
G1 to 50 Hz. Slowly decrease output voltage of power
source G1 to 90 Vac. Test lamp DS1 shall extinguish
(c) Close switch S1. Test lamp DS1 small
illuminate and DS2 shall remain extinguished.
Change 4
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