GE EPM 5300 Marine Instruments User Manual


 
EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL 11–83
EPM 5300 Series Meters
Chapter 11: Programming
Group 2 - Meter
Calibration
GE Consumer & Industrial
Multilin
Programming Group 2 - Meter Calibration
WARNING—READ THIS SECTION CAREFULLY BEFORE PROCEEDING:
Any rescaling, such as a change in a transformer ratio, can be accomplished in
GROUP 1. Calibration is not necessary.
Meter calibration cannot be performed if the meter is installed for service. The
sensing inputs must be connected to a power supply with variable voltage and
separate current outputs.
The calibration procedure requires highly accurate and stable input signals.
Incorrect readings result from improper calibration procedures. If unsure, return
unit to the factory for calibration.
BEFORE calibrating any channel, make a note of its Full Scale Setting (see Chapter
10). Set the Full Scale in accordance with Table 10-2 for calibration. Restore
original Full Scale Setting when calibration is completed.