Ups Safety - Huawei FusionDC1000A Commissioning Manual

FusionDC1000A Prefabricated All-in-One Data
Center
Commissioning Guide (IT Scenario)

1.5.1 UPS Safety

General Requirements
The category 3 (C3) UPS is intended for commercial and industrial application in
the second class environment. Installation restrictions or additional measures may
be needed to prevent interference.
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Issue 02 (2022-12-15)
NO TICE
The UPS is used for commercial and industrial purposes only. It cannot be
used as a power supply for life support devices.
For power supply systems that are critical to significant economic interests or
public order, such as the national computing center, emergency command
center, railway signal system and control center, civil aviation and air traffic
control center, airport command center, financial clearing center, and
transaction center, the Tier 4 or 3 power architecture specified in TIA-942
must be used. That is, two power supplies must be used to supply power to
loads.
The UPS operating environment must meet the requirements for the climate
indicator, mechanically active substance indicator, and chemically active
substance indicator in ETSI EN 300 019-1 class 3.6.
The UPS must not be located in non-confined environments near the ocean
(0–3.7 km) or indoor or semi-indoor environments where the temperature
and humidity are not controllable, such as simple equipment rooms, civil
houses, garages, corridors, and direct ventilation cabinets near the ocean; or
houses with only roofs, railway station platforms, gymnasiums, and
aquariums.
The UPS should be powered on as soon as possible after it is unpacked.
The UPS can be used to serve resistive-capacitive loads, resistive loads, and
micro-inductive loads. It is recommended that the UPS not be used for pure
capacitive loads, pure inductive loads, or half-wave rectification loads. The
UPS does not apply to regeneration loads.
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 backfeed protection, attach labels on
external mains and bypass input switches, informing that the UPS is
connected to a backfeed protection card. Disconnect the backfeed protection
card from the UPS before operating the UPS.
The upstream power distribution of the UPS should meet the requirements of
protection against electric shock specified in IEC 60364-4-41.
A circuit breaker equipped with a residual current device (RCD) is not
recommended.
If the root mean square (RMS) of a phase voltage of the utility power exceeds
320 V AC, the UPS may be damaged.
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