E-Mon E-PS-E-RTU-N - Manual (Page 23)

Chapter 2 Installation Electrical Installation
PowerSmart+ Power Quality Meter 23
Voltage Input connection
The equipment installation shall conform to the following
instructions:
a) a switch or circuit-breaker shall be included in the building
installation;
b) It shall be in close proximity to the equipment and within
easy reach of the OPERATOR;
c) It shall be marked as the disconnecting device for the
equipment.
Before installing, ensure that all incoming power sources
are shut OFF. Failure to observe this practice can result in
serious or even fatal injury and damage to equipment.
690V Inputs (Standard)
V
1
V
2
V
N
V
3
V
1
V
2
V
3
Voltages
690
690
690 400
400
400
690V inputs are usually used with direct connection. Use any of the seven
wiring configurations shown in Figures 2-8 through 2-15.
120V Inputs (Option U)
V
1
V
2
V
N
V
3
V
1
V
2
V
3
Voltages
120
120
120 120
120
120
120V inputs usually imply use of a potential transformer (PT). The PT
requires use of any of the four wiring configurations shown in Figures 2-7
through 2-10.
Current Input Connection
The PowerSmart+ PQM series provide two different CT connections:
• Using internal CT, the PowerSmart+ PQM does not have current
terminals
• Using highly accurate external CT, the PowerSmart+ PQM provides
current terminals