Hobart 120CU20, Operation And Maintenance Manual With Illustrated Parts List

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OM-2228 / Operation and Maintenance Manual
120CU20 / Series 500120 / 400 Hz. Generator Set
October 15, 2013 Chapter 1-1
Page 15
(15) Front LED Display (A5).
The front LED display indicates, which voltage (A-N, A-B, etc…) and amperage are shown on the
meters and whether
“EF BY-PASS” is present or bypassed. This “EF BY-PASS” indicator
serves to warn the operator that if the plug interlock system was by-passed any exposed cable
may be live.
(16) DC Generator output monitors (meters) [with DC option].
Two instruments, a voltmeter and an ammeter, monitor and display the transformer-rectifier’s
output. The voltmeter and ammeter meters are both analog type and indicate the output voltage
from 0 to 50 VDC and the amperage from 0 to 2500 A.
(17) “STARTING CURRENT” Switch (S431) [with DC option].
Each time the “STARTING CURRENT” push-button switch is pressed, the BLUE indicator will
glow. The present current limiting amperage setting will be displayed on the fault code meter for
a short time delay, before incrementing, at 100 A increments, up to 2500 A. Once 2500 A has
been reached, the incrementing will start over from the beginning.
(18) “DC OUTPUT” Contactor Switch (S430) [with DC option].
Each time the “DC OUTPUT” push-button switch is pressed, the BLUE indicator will glow when
the circuit is energized, indicating that power is available at the plug. When the load contactor
opens for any reason, the light turns OFF.