Rockwell Automation 1425 PowerMonitor Wireless 250 - Manual (Page 30)

30 Rockwell Automation Publication 1425-UM001A-EN-P - January 2012
Chapter 2 Hardware Installation
Voltage Input Connection
Use fuses or a circuit breaker with the following characteristics.
Connect voltage sensing wiring according to the applicable wiring diagram for
the model. Wiring terminals will accept a single 2.5 mm
2
(14 AWG) or two 1
mm
2
(18 AWG) conductors. Use wire with a minimum 65° C rating.
Please refer to Wiring Diagrams on page 24 .
For PowerMonitor W250 catalog numbers ending in -480, connect the two
power supply wires to a 24V DC power supply you provide:
• Brown = +24V DC
• Black = V DC common
The power supply output must be in the range of 21.6…26.4V DC and should
not supply power to any devices except for other nearby PowerMonitor W250
units.
Connect the green/yellow wire to a low impedance earth ground connection.
ATTENTION: A set of fuses or a circuit breaker must be installed between the
main supply and the PowerMonitor W250 unit for line protection. The
protection device must be installed near the PowerMonitor W250 device, be
easily accessible, and be identified as the circuit protection for the
PowerMonitor W250 unit.
Table 9 - Fuse and Circuit Breaker Characteristics
Protection Range (A) Wiring (mm
2
)/AWG Single Fault Condition Max Trip
Time (ms)
6.3 1 /18 30 ms
10 1.5 /16 30 ms
16 2.5 /14 30 ms
WARNING: Disconnect and lock out all sources of electric power to the location
in which the PowerMonitor W250 unit is to be installed and the circuit to which
it will be connected.