Powerware 400/230V, 380/220V manual S If installing conduit not supplied, plan for adequate conduit

INSTALLATION

3.Plan the wiring route from the electronics module to the monitored breaker panel(s). See Table 2 through Table 4, Figure 5, and use the following guidelines.

S Mount the electronics module within 3.05m (10 ft) of a disconnect device.

S If installing conduit (not supplied), plan for adequate conduit

routing. Follow National Electrical Code® (NEC®) and local guidelines for conduit length and bending radius. Installed width of the EMS−UGK with both conduit boxes is 633 mm (24.9"). Remove conduit box hole plugs as needed for conduit.

S Follow NEC and local guidelines for filling wiring space and maintaining the thermal performance of the equipment.

S Plan the location and installation of the CTs and wire taps to allow for adequate bending radius of wiring. If necessary, support the CTs to avoid undue strain on wiring.

Table 2. Current Transformer Sizing

Type of CT	Rating	CT Dimensions				Lead Length	Maximum Wire Insulation
			(W H		D)		Outside Diameter
Branch CT	75A	25.4		38.1	25.4 mm	0.91m (36.0")	10.16 mm (0.40")
		(1.0" 1.5" 1.0")
Branch CT	100A	41.0		51.0	30.0 mm	1.00m (39.4")	16.00 mm (0.63")
(separate accessory)		(1.6"		2.0"	1.2")
Main CT (phases A,	400A	96.0	100.0		46.0 mm	0.91m (36.0")	22.86 mm (0.90")
B, C, and Neutral)		(3.8"		3.9"	1.8")
Input Ground CT	100A	66.0		70.0	33.0 mm	0.91m (36.0")	15.24 mm (0.60")
		(2.6" 2.8" 1.3")
Subfeed CT	400A	96.0	100.0		46.0 mm	0.91m (36.0")	22.86 mm (0.90")
(separate accessory)		(3.8"		3.9"	1.8")

Table 3. Wire Tap Sizing

Housing Color	Wire Size
Blue	0.75–2.5 mm2 (18–14 AWG)
Yellow	4.0 mm2 (12 AWG)

NOTE Use wire taps ONLY on thermoplastic insulation (PVC).

14 EATON Powerware® Energy Management System (EMS) Upgrade Kit User’s Guide S 164201724 Rev 1 www.powerware.com