TM 5-6115-400-35
Table 6. Specification for Short Circuit Relay-
Table 5. Specification for Under Voltage Relay Continued.
Continued
Contacts shown in fault (drop-out) at 120V and below
Input requirements
Contacts transfer (pull-in) at 110 Volts or more
Frequency - 60-400 CPS
Temperature Limits
-66 to +86
C
C
Note. Relay shall trip when voltage on any
Temperature Trip Affects
phase to neutral equals or exceeds 20V and
-65 - 1%
C
will stay tripped if voltage remains.
85/C - 1 c
X
External Power Required
No additional power required.
c. Refer to table 6 (specifications for (K15) short
Contacts
circuit relay) and use the test procedure below to checkout
One N. O.
the relay.
Transfer on short circuit
( 1 ) Connect a light series with a suitable power source to
Contact Rating
terminals 5 and 6 and in like manner to
10A, 28 VDC
terminals 7 and 8. Relay trip will be indicated
Connections
by the two lights. The one to 5 and 6 will go
Input voltage
out and the one to 7 and 8 will turn on.
Terminal 1, 2, 3, (3 phases)
(2) Connect a source of variable AC voltage
Neutral
between terminals l and 4, 810wly advance
Contacts
voltage. Relay shall trip when voltage equals
5 and 6 N. O.
or exceed 20V. Repeat the test with the
7 and 8 N. O.
input connected to - and 4 and then again
Temperature Range
between 3 and 4.
55 to +70
C
C
d. Refer to the specifications in table 7 and test the
Temperature Limits
reverse popover relay.
-65 to 86
C
C
e. Test the governor paralleling control relay Kit, field
Temperature Trip Affects
flashing relay K5, parallel voltage control relay K7, and fuel
-66 - - 2*o
F
level relay K8 then compare the results from each relay test
+85 - + 8%
C
with the specifications given in table 8.
Table 7. Specifications for Reverse Power Relay
f. Test (K3) Crank limit relay and (K9) circuit breaker
control relay; then check the results with the specifications
D. C. Input Voltage
found in Table 9.
0-10 Volts
A. C. Voltage Superimposed On D. C. Input Voltage
Up to 20V
79. Disassembly and Reassembly
Reverse Trip Voltage
Refer to figure 129 to disassemble and reassemble the relay
2 Volts
box.
Reverse Polarity (Corresponds to Approximately 20-%
Reverse Power)
80. Relay Box Installation
Contacts
Refer to figure 129 to install the relay box.
External Power Reqd-2
24 VDC, One N. C., One N. O.
Table 6. Specifications for Short Circuit Relay
(Transfer on reverse power)
Phase
Connections
3 Phase short circuit detection circuit that senses a
Contact Rating
short circuit in any 1 phase or all 3 phases.
10A., 28 VDC Temperature range
Input connection
-55 to 70
C
C
Arranged in "Y"
Norm Input Voltage
Term. 1 Neg.
Term. 2 Pos.
External Power
Term. 3 Pos. 24V
Term. 4 Neg. 24V
Contacts
Term. 6 and 6 N. O.
Term. 7 and 8 N. C.
Temperature Limits
-65 to 85
C
C
Temperature Trip Affects
-66 - + 1.4V
C
+86 C - - .6V
165
