Powering Up; In Case Of Malfunction - Pacific Power Source LMX Series Operation Manual

Systems with transformers connected to the output require special attention when
designing transient profiles (applicable to systems w/UPC). It is possible to design transients
in which the DC Component of the periodic waveform is not zero. Attempting to push DC
voltage through the transformer will cause saturation of the transformer. However, the
output transformers are designed to support a single event, half-cycle dropout at 125 Vac
primary voltage at 50 Hz without saturating. Continuous operation with an asymmetrical
waveform (DC component ≠ 0 Vdc) will cause saturation however.

5.13 Powering Up

The following procedure should be followed before applying mains power:
1. Check that the front panel circuit breaker is in the OFF (O) position.
2. Verify that the model nameplate AC input specification match the local utility
power.
3. Make sure that nothing is connected to any of the OUTPUT terminals on the rear
panel.
4. Connect the correct AC mains line to the LMX Series® AC input terminal using a
suitable three phase AC mains disconnect switch.
5. Close the AC mains disconnect to apply utility power.
6. Turn on the front panel circuit breaker by pulling the lever upward to the "I"
position.
Note: Allow about 25 seconds for the LMX unit to fully initialize.
7. If the instrument does not turn on for some reason, turn OFF the front panel circuit
breaker and verify the presence of the correct AC line input voltage using
appropriate safety measures.

5.13.1 In Case of Malfunction

In the unlikely event of an instrument malfunction or if the instrument does not turn on
despite the presence of the correct AC line voltage, please attach a warning tag to the
instrument to identify the owner and indicate that service or repair is required. Contact
Pacific Power Source or its authorized representative to arrange for service.

Entire Contents Copyright 2018 by Pacific Power Source, Inc. (PPS) • All Rights Reserved • No reproduction without written authorization from PPS.
LMX Series Power Source Operation Manual
LMX SERIES® OPERATION MANUAL
Unpacking and Installation
SECTION 5:
Page 83 of 463