Liebert S600 User Manual page 5

electrical regulations.
Earth connection is critical before connecting the input supply (including both mains supply and
battery).
This equipment is installed with an EMC filter.
Earth leakage current is less than 3000mA.
Transient and steady state earth leakage currents, which may occur when the equipment is started,
should be taken into account in the selection of instantaneous RCCBs or RCD devices.
RCCB which is sensitive to unidirectional DC pulse (class A) and insensitive to transient state current
pulse must be selected.
Note also that the earth leakage currents of the load will be carried by the RCCBs or RCDs.
The equipment must be earthed in accordance with the local electrical code of practice.
This UPS is fitted with a dry contact closure signal for use with an external automatic disconnect device
(supplied by others) to protect against backfeeding voltage into the incoming terminal through the
rectifier or bypass static switch circuit. A label must be added at all external incoming primary supply
disconnect device to warn service personnel that the circuit is connected to a UPS. The text of the label
has the following meaning: Risk of voltage backfeed! Isolate the UPS, then check for hazardous voltage
between all terminals including the protective earth before working on this circuit.
All equipment maintenance and servicing procedures involving internal access requires the use of a tool
and should be carried out only by trained personnel. There are no user-serviceable parts behind covers
requiring a tool/key for removal.
All physical battery maintenance and servicing procedures requires the use of a tool/key and should be
carried out only by trained personnel.
Take special care when working with the batteries associated with this UPS. When connected together,
the battery terminal voltage will exceed 400Vdc and is potentially lethal.
Battery manufacturers supply details of the necessary precautions to be observed in 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.
Like other types of large power equipment, the UPS and battery circuit breaker box/battery cabinet
Vertiv|Liebert® S600 10kVA ~ 20kVA UPS | User Manual
Warning: high earth leakage current
Warning: backfeeding protection
User serviceable components (For service personnel)
Battery voltage exceeds 400Vdc (For service personnel)
General safety (For users)
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