C750 & C750R User
Manual Page 7
SAFETY OF PERSONS
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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.
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Dangerous voltage levels are present within the system. It should be opened exclusively by qualified service
personnel.
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The system must be properly grounded.
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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 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 fire. The batteries may explode.
Batteries constitute a danger (electrical shock, burns). The short-circuit current may be very high.
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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).
PRODUCT SAFETY
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The UPS connection instructions and operation described in the manual must be followed in the indicated order.
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UPS enclosure IP rating IP20.
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CAUTION - To reduce the risk of fire, the unit connects only to a circuit provided with branch circuit overcurrent
protection for
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The upstream circuit breaker for Normal AC/Bypass AC must be easily accessible. The unit can then be
disconnected from AC power source by opening this circuit breaker.
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An additional AC contactor is used for back feed protection and must comply with IEC/EN 62040-1
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Disconnection and overcurrent protection devices shall be provided by others for permanently connected AC
input (Normal AC/Bypass AC) and AC output circuits.
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Check that the indications on the rating plate correspond to your AC powered system and to the actual electrical
consumption of all the equipment to be connected to the system.
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For pluggable equipment, the socket-outlet shall be installed near the equipment and shall be easily accessible.
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Never install the system near liquids or in an excessively damp environment.
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Never let a foreign body penetrate inside the system.
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Never block the ventilation grates of the system.
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Never expose the system to direct sunlight or source of heat.
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If the system must be stored prior to installation, storage must be in a dry place.
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The admissible storage temperature range is -25°C to +55°C without battery (-15°C to +40°C with battery).
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TN-S/IT/TN-C/TT of electrical supply system may be connected by UPS.
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This UPS may be provided with a maximum of 6 extension battery cabinets or equivalent.
