MIL-DTL-16036M(SH)
g. One indicator light (green), so connected as to indicate when all manually operated control devices are set
up for automatic operation. The applicable following functions and conditions shall be included to complete the
green light circuit.
(1) Generator circuit breaker (closed) (when separated from bus transfer).
(2) Voltage regulator transfer switch (automatic position).
(3) Ship s service bus transfer equipment (set for automatic operation).
(4) Emergency bus transfer equipment (set for automatic operation).
(5) Diesel starting control circuits (set for automatic starting).
(6) Diesel starting air shut-off valve (open).
(7) Electrically-operated emergency bus unloader switch (if used, set for automatic operation).
(8) Diesel salt water cooling pump circuit breaker (closed).
(9) Circuit breaker reset switch closed (set for automatic operation).
h. Space, mounting, and wiring for the voltage regulator equipment, including associated current and potential
transformers, and for the exciter field rheostat, all equipment to be furnished with the emergency generator. The
control switches, rheostats, and similar equipment constructed for panel mounting shall be located for front-of-panel
operation as specified (see 6.2).
i. Space, mounting, and wiring for equipment, for the control switches and interlocks, furnished with the bus
transfer equipment. The control switches and similar equipment constructed for panel mounting shall be located for
front-of-panel operation.
j. One temperature indicator with selector switch and accessories, when temperature detectors are provided
with the generator as specified (see 6.2).
3.4.2.2 AC emergency generator control and contractor type bus transfer section. This unit shall be equivalent
functionally to the section specified in 3.4.2.1. The devices shall be the same as required in 3.4.2.1 except that the
following shall be provided in lieu of 3.4.2.1(a):
a.
One generator circuit breaker, Type AQB-A, manually operated.
b. Two Type ABT-4A (9) contactor type bus transfer equipments having current ratings not less than the
current rating of the feeders from the ship s service switchboards, as specified. One equipment shall be connected
for selection of the ship s service supply, the second equipment shall be connected for transfer between ship s
service supply and the emergency generator supply.
c. Four indicator lights (blue) to indicate closed positions of the contractors of the Type ABT-4A (9) bus
transfer equipments. Indicator lights circuit shall be wired through auxiliary contacts provided in the bus transfer
equipments.
Two indicator lights (white) to indicate that the ship s service power feeders are energized.
d.
e. One Type NQB circuit breaker, connected to bypass the bus transfer equipment selecting between ship s
service and emergency so that emergency generator power may be supplied to the ship s service switchboards when
their generators are secured.
f. Two control switches, one for each bus transfer equipment, for selecting between manual and automatic
control of the equipments.
g. One electrically-operated emergency bus unloader switch with control relay and current transformer. This
switch shall be connected between the feeder for the steering power switchboard and the emergency bus to
disconnect the emergency bus during periods of high current requirements by the steering gear auxiliaries when
energized from the emergency generator. Equipment shall function to hold the unloader switch closed unless the
demand on the steering power switchboard exceeds 150 percent of the full load current of two steering motors plus
100 percent of the full load current of all other steering gear auxiliaries, in which case the unloader switch shall open
provided the power is being supplied by the emergency generator. This item shall be furnished only when specified
(see 6.2).
3.4.3 Distribution units. Distribution units of the emergency switchgear group shall be in accordance with
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