CHAPTER 3: ELECTRICAL INSTALLATION
GE Multilin EPM 5000 series Advanced Power Meters 9
• The meter and terminal module DSP3 are factory calibrated together; the serial numbers are matched
on both. The DSP3 input module and the meter base MUST MATCH!
• Mismatching of the meter and DSP3 input module will cause inaccurate readings because calibration
ratios are stored in the meter’s memory, not in the DSP3 input module.
LIST OF CONNECTION DIAGRAMS
NOTE: See phase reversal if a message of CBA appears after installation.
I Three-Phase, Three-Wire System Delta with Direct Voltage and CTs
II Three-Phase, Three-Wire Open Delta with two CTs and two PTs
(Open Delta System should only be used if the electrical system is a 3-wire 2 PT OPEN DELTA
Open Delta can be enabled or disabled in Programming GROUP 0, FUNCTION 3, Chapter 9,
section 9.4)
III Three-Phase, Three-Wire Open Delta with three CTs and two PTs
IV Three-Phase, Four-Wire Wye with Direct Voltage and CTs
V Three-Phase, Four-Wire Wye with CTs and PTs
VI Single Phase with CT and PT Connection
VII Dual-Phase System
VIII Three Phase System
CONTROL
+
-
POWER
7
6
5
4
3
2
1
8
9
10
11
12
13
PORT
L1
L
LINE
A
BC
LOAD
BACK VIEW
I. Three Phase, Three-Wire System Delta with Direct Voltage and CTs
Note: Remember to make sure Open Delta bit is programmed in the meters (See Chapter 9).
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