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NS3000 Series User Manual
Rev. 01
Safety Precautions
This manual is about the installation and operation of NS3000 Series UPS (Hereinafter referred to
as UPS).
Please carefully read this manual prior to installation.
The UPS must be debugged and maintained by the engineer commissioned by the manufacturer or
the agent. Otherwise, human safety may be endangered and the damage of UPS shall not belong to the
warranty scope.
UPS is only used for commercial / industrial purpose and cannot be used as power of life support
equipment.
APPLICABLE STANDARDS
This product complies with 2006/95/EC - CE 73/23 & 93/68 (low voltage safety) and 2004/108/EC
89/336 (EMC) , and EMC standards of Australia and New Zealand (C-Tick) , and the following UPS
product standards:
*IEC62040-1-1-General and safety requirements for use in operator access area
*IEC/EN62040-2 EMC requirements CLASS C3
*IEC62040-3 Performance requirements and test methods
Continued compliance requires installation in accordance with these instructions and the use of
manufacturer approved accessories only.
WARNING- High earth leakage current
Earth connection is critical before connecting the input supply (include both utility supply and
battery) . This equipment must be earthed in accordance with local electrical authority codes of
practice.
Earth leakage current exceeds 3.5 mA and is less than 1000 mA.
Transient and steady-state earth leakage currents, which may occur when starting the equipment,
should be taken into account when selecting instantaneous RCCB or RCD devices.
Residual Current Circuit Breakers ( RCCBs) must be selected insensitive to DC unidirectional pulses
( class A ) and transient current pulses ( RCCBs) .
Note it that the earth leakage currents of the load will also flow across UPS RCCB or RCD.
Warning: Back feed Protection
Backfeed protection, (optional), is provided to isolate the static switch if excessive voltage is present at the
bypass input when the bypass source is deenergized. If this function is not installed and enabled , there must be
a warning label on the external bypass switch to remind the operator of the connection. The warning on label
should be: Isolate the UPS before operating this part.
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NS3000 Series User Manual
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Components that can be maintained by user
All the equipment maintenance and servicing procedures involving internal access need special tools
and should be carried out only by trained personnel. The components that can only be accessed by
opening the protective cover with tools cannot be maintained by user.
This UPS full complies with “IEC62040-1-1-General and safety requirements for use in operator
access area UPS”.Dangerous voltages are present within the battery box. However, the risk of
contact with these high voltages is minimized for non-service personnel. Since the component with
dangerous voltage can only be touched by opening the protective cover with a tool, the possibility of
touching high voltage component is minimized. No risk exists to any personnel when operating the
equipment in the normal manner, following the recommended operating procedures in this manual.
Battery Voltage Higher Than 400Vdc
All the battery maintenance and servicing procedures involving internal access need special tools or
keys and should be carried out only by trained personnel.
SPECIAL CARE SHOULD BE TAKEN WHEN WORKING WITH THE BATTERIES ASSOCIATED
WITH THIS EQUIPMENT. WHEN CONNECTED TOGETHER, THE BATTERY TERMINAL
VOLTAGE WILL EXCEED 400Vdc AND IS POTENTIALLY LEATHAL.
Battery manufacturers supply details of the necessary precautions to be observed when working on,
or in the vicinity of, a large bank of battery cells. These precautions should be followed implicitly at all
times. Particular attention should be paid to the recommendations concerning local environmental
conditions and the provision of protective clothing, first aid and fire-fighting facilities.
