Powerware 9170 - Installing with an External Bypass Switch

UPS with Bypass Electrical Installation
25
Powerware
®
9170
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UPS User’s Guide S Rev B www.powerware.com
UPS Installation with an External Bypass Switch
WARNING
Only qualified service personnel (such as a licensed electrician) should perform
the electrical installation. Risk of electrical shock.
CAUTION
To prevent electrical shock or damage to the equipment, verify that the
Powerware 9170
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UPS is OFF before you remove the entrance panel. The circuit
breaker or disconnect switch must also be off at the AC input service panel.
Also, turn OFF the AC disconnect and bypass switches before you connect any
wirestothebypassswitchterminalstrip.
1. Mount the bypass switch within sight of the UPS. If you do not
have a P owerware bypass switch or the fuse b ox or panel is out
of sight, you must install a separate disconnect switch next to
the UPS.
The bypass switch should be mounted securely to a sturdy
surface. You may need to turn the cabinet 90 degrees (on its
side) to enable operator access to the switch handle.
2. Remove the six screws in the bypass switch front panel and
remove the panel. Remove any packing material inside the
bypass switch.
Remove knockouts in the bottom of the bypass switch for AC
Line Input, AC to UPS Input, AC from UPS Output, and AC to the
UPS load.