(b) 50/60 Hz sets
m. Load measuring unit.
DOD drawing No. . . . . .70-1119.
Input voltage. . . . . . . .114 - 139 volts, 50/60
Hz.
Trip frequency. . . . . 46 ± 1 H z o r 5 5 H z
± 1 Hz:
Voltage input limits . . . . ± 10%.
Temperature range . . . . -65°F to + 170°F.
External power required . . none.
Contact rating . . . . . . . 10 amperes, 28 Vdc,
resistive.
(4) Short circuit relay.
DOD drawing No. . . . . .70-1137.
Trip voltage . . . . . . . .24 volts ± 1, any phase
to neutral.
Contact rating . . . . . . . 10 amperes, 28 Vdc.
Frequency. . . . . . . . . 50/400Hz.
Temperature range . . . . -65°F to + 170°F.
Temperature effect on trip
point . . . . . . . . . . -65°F to +77°F ± 2
percent max. change.
+77°F to + 170°F ± 3
percent max. change.
(5) Reverse power relay.
DOD drawing No. . . . . .70-1136.
DC input voltage . . . . . . 0/10 volts with ac
voltage superimposed
on dc input voltage up
to 20 volts.
External power . . . . . .24 volts dc.
Reverse polarity . . . . . . approx. 10 percent re-
verse power.
Temperature limits . . . . -65°F to + 170°F.
Temperature effect on trip
point . . . . . . . . . .-650F + 3volts + 77° F
+ 2 volts.
+ 170°F +
1.5 volts.
Reverse trip voltage . . . . + 2 volts.
Contact rating . . . . . . . 10 amperes, 28 Vdc.
(6) Permissive paralleling relay.
DOD drawing No. . . . . .70-1118.
External power required . .24 Vdc.
Operating level . . . . . . contacts close when
signal input voltage
falls below 8 volts ±
1, 50/400 Hz.
Temperature limit . . . . . -65°F to + 170°F.
Contact rating . . . . . . .28 volts, 10 amperes,
resistive.
DOD drawing No. . . . . .69-785.
Use . . . . . . . . . . . . 50 to 400 Hz systems.
n. Contactor
DOD drawing No. . . . . .
Construction . . . . . . .
KVA rating (maximum) . . .
Main contacts . . . . . . .
Voltage ac . . . . . . . .
Frequency . . . . . . . .
Continuous current . . . .
6 second current . . . . .
Interruption (maximum) . . .
Mechanism . . . . . . . .
Auxiliary contacts:
Voltage dc
Current
Voltage ac
Lamp current
Contact operation
Temperature range . . . .
Coil data
Operating voltage (without
(maximum) . . . . . . .
(minimum) . . . . . . .
Operating time at voltage
close release . . . .
Close coil resistance. . . .
69-680.
gasket sealed.
125 KVA 50/60 and
400 Hz.
3 psi + (double break).
120/208 and 240/416.
50/60 and 400 Hz.
350 amperes, 208
volts.
50/60 and 400
Hz.
750 amperes at 50/60
and 400 Hz.
5000 amperes, 50/60
and 400 Hz.
120/208
volts 2500 amperes
50/60 and 400 Hz
240/416 volts.
electrically held.
28 volts.
7.5 amperes.
120 volts.
7.5 amperes.
auxiliary contacts
operate 0.001 to
0.003 second after
main contacts close
and 0.003 to 0.005
second after main
contact opens.
55° to 71°C.
external resistance)
32 volts.
18 volts.
0.050/0.035 second
at 30/18 Vdc.
8 ohms.
o. Thermal Watt Converter, 50/60 Hz.
DOD drawing No. . . .
volts . . . . . . . . .
Current. . . . . . . .
Elements . . . . . . .
Phase . . . . . . . .
Number of wires. . . .
Output
.
.
.
..
o..
Output circuit resistance
Watts per element . . .
. 0 69-589-1.
. . 100/130.
. . 1 ampere.
. . 3.
. . 3.
. . 4.
. . 20 MV dc, open
circuit.
. . 4.97 ohms.
. . 96.26.
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