Quantcast Figure 1-5. Transformer rear view.

 

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Figure 1-4. Transformer front view.
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TM-5-6120-250-12 Substation Trailer Mounted 500 KVA AC 4160-416Y/240V 208Y/120V 3 Phase 50/60 Hertz Manual
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Low Voltage Cabinet
Figure 1-5. Transformer rear view.
c. Low Voltage Cabinet. The low voltage cabinet is an AKD-5 Powermaster. It is designed for outdoor service and
provides distribution through a main breaker to three feeder breakers. (fig. 1-6).
(1) Looking at the cabinet from the front, there are two full length doors. When the left front door is open, it shows
from top to bottom an instrument compartment with a voltmeter and a voltmeter switch. This compartment has a hinged
panel secured with two knurled bolts. Inside this instrument compartment are three potential transformers.
(2) The middle compartment of this section has the main circuit breaker which is a AK-3-50 mounted on a draw out
carriage. In the rear of the 1iain breaker compartment are bus stud connectors, and three current transformers.
(3) The bottom compartment is Feeder Breaker No. I which is a AK-2-50. It has similar features as the main
breaker.
(4) Inside this section mounted on the left side wall of this section is a light switch for lights directly above each
instrument compartment and
1-10

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