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Procedure
1. Remove the connector panel blank (
2. Insert the UPS Network Management Card into the slot. Secure the panel by
Installation requirements
Recommended protective devices and cable cross-sections
1. Recommended upstream protection
2. RISK OF VOLTAGE BACKFEED. The system has its own power source (the
3. Although the UPS does not contain anti-backfeed (ABF) relays, some backfeed
4. Recommended cable cross-sections
tightening the two screws.
Table 1. Recommended upstream protection
Normal and bypass
AC inputs not
UPS model
Normal AC input
D curve – 50A
5594-8PX
(8k VA 3Phase)
D curve – 63A
5594-9PX
(11k VA 3Phase)
D curve – 50A
5594-8KX
(8k VA 1Phase)
D curve – 63/70A
5594-9KX
(11k VA 1Phase)
battery). Isolate the UPS and check for hazardous voltage upstream and
downstream during lockout-tagout operation. Terminal blocks might be
energized even if the system is disconnected from the AC power source.
protection is provided. For example, if some components are damaged in
battery mode, the output voltage may feed back to the input. In this case, a
current transformer (CT) is used to detect the bypass current feedback voltage.
If a current backfeed fault condition is detected, the UPS will terminate the
inverter output to avoid personal injury.
), which is secured by two screws.
Separate normal and bypass AC inputs
separate
Normal AC input
D curve – 20A
D curve – 32A
D curve – 50A
D curve – 63/70A
Bypass AC input
D curve – 50A
D curve – 63A
D curve – 50A
D curve – 63/70A
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Chapter 3. Installation
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