Schneider Electric E4800 User Manual
PowerLogic
TM
EM4800 Series
930-110-01-B.00
Installation
04/2011
© 201
Schneider Electric All Rights Reserved
20
Delta service metering
To use the PowerLogic EM4800 meter in a Delta service, the line-to-line
voltage from the Delta service must be reduced to 120V line-to-line using
appropriate potential transformers. Metering a Delta service requires only
two potential transformers, and only two CTs for phase A and C. Using the
phase B CT is optional.
voltage from the Delta service must be reduced to 120V line-to-line using
appropriate potential transformers. Metering a Delta service requires only
two potential transformers, and only two CTs for phase A and C. Using the
phase B CT is optional.
For a three-phase Delta panel with the 120V variant of the meter:
•
Connect meter terminal A to the voltage disconnect phase A (red wire)
•
Connect meter terminal C to the voltage disconnect phase C (blue wire)
•
Connect meter neutral terminal to meter terminal B (black wire)
•
Connect earth wire to earth post using lug provided (see Figure 11)
Figure 11: PowerLogic EM4800 meter three-phase Delta service
connection
connection
8
4
5
6
9
2
1
3
7
Legend:
1 BX cable
2 Earth
3 Phase C (blue)
4 Phase B (black)
5 Shorting jumper
6 Sense voltage terminal block (J3)
7 J3-B to J3-N shorting wire
8 Phase A (red)
9 0.75-inch (1.9-cm) strain relief
1 BX cable
2 Earth
3 Phase C (blue)
4 Phase B (black)
5 Shorting jumper
6 Sense voltage terminal block (J3)
7 J3-B to J3-N shorting wire
8 Phase A (red)
9 0.75-inch (1.9-cm) strain relief