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Rockwell Automation 1403-DM_LM_MM Powermonitor II Instruction Sheet User Manual

Page 23

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Installation

2-11

1403-IN001A-US-P

Figure 2.9 3-phase 3-wire Open Delta with Two PTs and
Three CTs Wiring Diagram

V1

V2

V3

N

Fiber

Rx

Fiber

Tx

I1+

I2+

I3+

I4+

S1

S2

S3

S4

Scom

L/+

R14

R11

R12

R24

R21

R22

Acom

Ain

Voltage Mode = Open Delta

LINE

L1

L2

L3

Fuse

Fuse

Voltage
Inputs

Status
Inputs

Power

GRD

Display
Module
Fiber

Powermonitor II
Master Module

Customer Supplied CT Shorting
Switch or Test Block

Analog
Input

Current
Inputs

Relay
Output

Customer
Chassis
Ground

Note:

Careful attention must be paid to correct phasing and polarity for
proper operation.

All ground wires should be taken individually to Customer
Chassis Ground for a single point of grounding.

The Two CT wiring diagrams in Figure 2.10 may be used for any
of the delta or open delta wiring or voltage modes shown. Whether
there are two or three CTs in a circuit does NOT affect the voltage
wiring or mode selection.

N/-

I1-

I2-

I3-

I4-

Load