UPS5000-E-(40 kVA-320 kVA)
User Manual
1 Safety Precautions
Issue 10 (2015-09-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5
Before installing or removing the power cable, turn off the power switch.
Before connecting a power cable, check that the label on the power cable is correct.
Fuse
To ensure that the system runs safely, if a fuse is to be replaced, the new fuse must be of the
same type and specifications.
Backfeed Protection
The UPS can be configured with a backfeed protection dry contact to work with an external
automatic circuit breaker, preventing the voltage from flowing back to input terminals over
static bypass circuits. If the installation and maintenance personnel do not need to use
backfeed protection, paste labels on the mains and bypass input circuit breakers, informing
that the UPS is connected to backfeed protection circuits. Disconnect the backfeed protection
card from the UPS before performing operations on the UPS.
Electrostatic Discharge
The static electricity generated by human bodies may damage the electrostatic-sensitive
components on boards, for example, the large-scale integrated (LSI) circuits.
Human body movement, friction between human bodies and clothes, friction between
shoes and floors, or handling of plastic articles causes static electromagnetic fields on
human bodies. These static electromagnetic fields cannot be eliminated until the static is
discharged.
To prevent electrostatic-sensitive components from being damaged by the static on
human bodies, you must wear a well-grounded ESD wrist strap when touching the
device or handling boards or application-specific integrated circuits (ASICs).
