Current Transformer Sizing, Wire Tap Sizing

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
Type of CT	Rating		(W H		D)	Lead Length	Outside Diameter
			(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

415/240V, 380/220V, 208/120V, 400/230V specifications

The Powerware series of uninterruptible power supplies (UPS) is renowned for its versatility and reliability in providing essential power protection for critical equipment across various environments. Specifically, the configurations of 208/120V, 400/230V, 380/220V, and 415/240V cater to a wide range of geographic voltage standards, making it an ideal solution for diverse industrial and commercial applications.

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