Installation Manual Liebert Hipulse E Single or '1+N' UPS System
(07/04) Page v
Safety Precautions
CONFORMITY AND STANDARDS
This equipment complies with the following requirements:
Normative references: Uninterruptible Power System (UPS).
* IEC 62040-1-1 (2002) — ‘General and safety requirements for use in operator access area’;
* EN 50091-2 (1995) — ‘EMC requirements’;
* IEC 62040-3 (2001) — ‘Performance requirements and test methods’;
* EN 60950 (2001) — ‘Information technology equipment;
* EN 60529 (1989) — ‘Degrees of Protection provided by enclosures (IP Code)’
and published technical standards. For more details, see Chapter 5 ‘Conformity and standards’.
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 ESSENTIAL BEFORE CONNECTING THE
INPUT SUPPLY.
This equipment must be earthed in accordance with local electrical authority codes of practise.
Caution
This equipment can be fitted with RFI suppression filters (optional).
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 sensitive to DC unidirectional pulses ( class A ) and
insensitive to transient current pulses.
Note also that the earth leakage currents of the load will be carried by this RCCB or RCD.
WARNING
This system has a signal available for use with an automatic device, externally located, to protect against
backfeeding voltage through the mains Static Bypass circuit. If this protection is not used with the switchgear that
is used to isolate the bypass circuit, a label must be added at the switchgear to advise service personnel that the
circuit is connected to a UPS system.
The text is the following or equivalent:
ISOLATE THE UNINTERRUPTIBLE POWER SYSTEM
BEFORE WORKING ON THIS CIRCUIT.
The warning triangle indicates all the personal safety instructions.
Follow these instructions carefully to avoid injury.
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