Isolated Output Wiring Diagrams

50 or 60 Hz

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

with Isolated Output Option

Parameter 7-3-4 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 34. Isolated Outputs ￿ Single-Phase Voltages

50 or 60 Hz

120/208 or 127/220V Out

with Isolated Output Option

Parameter 7-3-4 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

 

 

 

 

 

 

 

 

 

L1

 

 

N

 

 

L2

Figure 35. Isolated Outputs ￿ Derived 3-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, 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 36. The other end of the wire (as shown by * in Figure 36) must be attached to the proper output neutral terminal, as specified in Figure 34 and Figure 35.

44

Powerware® 9170 User's Guide ￿ LTM-1344 B Uncontrolled Copy