OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER

199
(a) Power plant and control devices.
(1) Electric motor and controller.
(2) A-end.
(3) Auxiliary pump.
(b) Hydraulic motor drive unit (B-end).
(C) Couplings for connecting units.
'Power Plant and Control Devices
7. Electric motor. - The electric motor is a power
unit of commercial design and manur acture (Louis Allis Co .).
Details of the design and general arrangement of the assembly,
wi th rotor shaft drive coupling provisions for the A-end and
the auxiliary pump, are shown on drawing 231543. Type and
performance data areas follows:
Type: Squirrel cage induction; 440 volts; 60 cycle;
3 phase; horizontal mounting; fan-cooled;
waterproof enclosure.
H.P. - - - - - - - - - - 40 (overload rating, 72)
Speed - - - - - - - - - - - - - - - - Constant
R.P.M., full load - - - - - - - - - - - - 1160
Amperes, full load - - - - - - - - - - - - - - 48
Weight, pounds - - - - - - - - - 1200
Manufacturers type designation RX-frame 445-S
8. Controller. - The controllerisan across-the-line,
magnetic motor starter, of shockproof design, semiautomatic
operation, waterproof enclosure, arranged with an externally
operated door interlock disconnect switch. It is an assembly
of commercially manufactured parts (\.-lard Leonard Electric Co.)
providing control and protection for the above described motor.
With a master switch push-button station it is mounted on the
circular bulkhead, in the machinery space, immediately forward
of the power drive unit. The installation has arrangement of
the starting circuit, power circuit and protective devices as
shown on the wiring diagram of drawing 231545. The protective
features there indicated comprise undervoltage, short circuit
and overload protection of the following types.
(a) Short circuit protection. - Two mainline fuses,
400 amperes, 250 volts, each, bridge two phases
of the power circuit to provide motor short
circuit protection.