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CHAPTER 9
P
GROUP 2: M
ROGRAMMING
9.1
S
C
TANDARD
ALIBRATION
WARNING - R
⌦
Calibration does not need to be accomplished to change CT or PT ratios. (See GROUP 1).
⌦
Meter calibration cannot be performed if the meter is installed for service. The sensing 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 note of its Full Scale Setting (see Ch. 8). Set the Full
Scale in accordance with Table 9-1 for calibration. Restore original Full Scale Setting when
calibration is completed.
⌦
The first function in GROUP 2 (STD.CORR) is NOT to be changed by the user. Please make
note of the value here (
value is inadvertently lost or changed, contact the factory for assistance.
All sensitive electronic measuring devices drift slightly over time, requiring periodic calibration. We recommend
returning the meter to the factory on a yearly basis.
T
9-0: G
2 P
ABLE
ROUP
ROGRAMMING
FUNCTION NUMBER
P.
0.
1.
2.
3.
4.
5.
6.
7.
8.
E.
The Full Scale and Calibration values should be equal during the calibration procedure. The meter may be rescaled
without calibrating by changing the full scale in GROUP 1, FUNCTION 0 or 1. (See Table 9-1)
T
9-1: S
, F
ABLE
OURCE
ULL
CALIBRATION TYPE/
RANGES
VOLTS 120/208V
VOLTS 277/480V
VOLTS 4/1 PT
VOLTS 60/1 PT
AMPS Hi End 1000/5 CT
AMPS Hi End 5000/5 CT
AMPS Lo End 1000/5 CT
AMPS Lo End 5000/5 CT
ETER
S
EAD THIS
ECTION
) before using any other function in this Group. If the STD.CORR
F
ORMAT
FUNCTION
Standard Correction. Factory Procedure only.
High End Calibration, VOLTS AN
High End Calibration, VOLTS BN
High End Calibration, VOLTS CN
High End Calibration, AMPS A
High End Calibration, AMPS B
High End Calibration, AMPS C
Low End Calibration, AMPS A
Low End Calibration, AMPS B
Low End Calibration, AMPS C
Exit Programming GROUP 2
S
V
S
CALE AND
ALUE
ETTINGS FOR
CALIB. SOURCE
NECESSARY
120V
300V
120V
120V
5A
5A
2.5A
2.5A
GE Industrial Systems
C
ALIBRATION
C
B
P
AREFULLY
EFORE
C
ALIBRATION
FULL SCALE SETTING
120V
300V
480V
7.20KV
1000A
5.00KA
ROCEEDING
CALIBRATION VALUE
120
300
480
7.20
1000
5.00
500
2.50
31
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