Eaton Electrical ASY0673, ASY0529, ASY0567, ASY0674 Neutral-to-Ground Bonding for Isolated Output

ISOLATED OUTPUT WIRING DIAGRAMS

50 or 60 Hz

100/200, 110/220, 115/230, or 120/240V Out

with Isolated Output Option

Menu 4 2 4 set to 200, 220, 230, or 240, as required.

X1	X3		X0			X2
X			X			X
		N-G Bond
	100, 110,			100, 110,
	115, or 120				115, or 120
	200, 220, 230, or 240
L1			N			L2

Figure 35. Isolated Outputs – Single-Phase Voltages

50 or 60 Hz

120/208 or 127/220V Out

with Isolated Output Option

Menu 4 2 4 set to 208 or 220, as required.

X1	X3	X0	X2
	X	X	X
		N-G Bond

88 or 93

120 or 127

208 or 220

L1NL2

Figure 36. Isolated Outputs – Derived Three-Phase Voltages

Neutral-to-Ground Bonding for Isolated Output

As required under safety regulations issued by various regulatory agencies, the UPS cabinet must have a ground-bond connection for the neutral terminal of an isolated-output system. In such a system, the customer must make the neutral-to-ground (also referred to as N-G or neutral-to-earth) connection after selecting the desired output configuration.

In isolated-output systems, connect the neutral-to-ground (neutral-to-earth) wire to the proper terminal before making any other connections to the UPS. A green and yellow neutral-to-ground bonding wire is supplied, with one end connected to the ground (earth) UPS terminal as shown in

Figure 37. The other end of the wire (as shown by * in Figure 37) must be attached to the proper output neutral terminal, as specified in Figure 35 and Figure 36.

54 Eaton 9170+ UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality