Eaton 9SX Series, Manual

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60
Safety Of Persons

RISK OF VOLTAGE BACKFEED. The system has its own power source (the
battery). Isolate the UPS and check for hazardous voltage upstream and
downstream during lockout-tagout operation. Terminal blocks may be
energized even if the system is disconnected from the AC power source.

Dangerous voltage levels are present within the system. It should be opened
exclusively by qualified service personnel.

High leakage current, earth connection essential before connecting supply.

The battery supplied with the system contains small amounts of toxic
materials. To avoid accidents, the directives listed below must be observed:
- Servicing of batteries should be performed or supervised by personnel
knowledgeable about batteries and the required precautions.
- When replacing batteries, replace with the same type and number of
batteries or battery packs.
- Do not dispose of batteries in a fire. The batteries may explode.
- Batteries constitute a danger (electrical shock, burns). The short-circuit
current may be very high.

Precautions must be taken for all handling:
- Wear rubber gloves and boots.
- Do not lay tools or metal parts on top of batteries.
- Disconnect charging source prior to connecting or disconnecting battery
terminals.
- Determine if battery is inadvertently grounded. If inadvertently grounded,
remove source from ground. Contact with any part of a grounded battery
can result in electrical shock. The likelihood of such shock can be reduced
if such grounds are removed during installation and maintenance
(applicable to equipment and remote battery supplies not having a
grounded supply circuit).
Safety of product

The UPS connection instructions and operation described in the manual
must be followed in the indicated order.

The upstream circuit breaker for Normal AC/Bypass AC must be easily
accessible. The unit can be disconnected from AC power source by opening
this circuit breaker.

An additional AC contactor is used for backfeed protection and must comply
with IEC/EN 62040-1 (the creep age and clearance distances shall meet the
basic insulation requirements for pollution degree 2).