COVER serii NHS – User Manual
COMEX S.A.
2
警告
危 险
NOTE - Large leakage current
The connection of the protective conductor (PE) is essential and must be made before connecting
the remaining working conductors (power supply, consumer, battery).
Grounding should be carried out in accordance with prevailing standards and practical knowledge
applicable at the place of installation.
The leakage current exceeds 3.5 mA and is less than 1000 mA.
When choosing immediate-action RCCB or RCD devices, the transient and fixed leakage currents
that may occur during commissioning must be taken into account.
Select residual current circuit breakers (RCCB) that are sensitive to unidirectional DC current pulses
(Class A) and insensitive to transient current pulses.
It should also be remembered that a given RCCB or RCD device conducts the leakage currents of
the receiver.
警告
危 险
Operation
There is dangerous voltage in the uninterruptible power supply housing. The risk of contact with such
a voltage is kept to a minimum, as live components are behind a closed housing. Additional internal
protective covers make the device protected in accordance with protection class IP20.
Normal operation of the device, taking into account the recommended operating procedures, poses
no threat to personnel.
All maintenance and service procedures require access to the interior of the device and should only
be carried out by trained employees.
警告
危 险
High battery voltage> 400 Vdc
All work related to the operation and installation of batteries can be performed by a properly trained
service.
After connecting the battery, the voltage at their terminals exceeds 400 Vdc and is potentially lethal.
Battery manufacturers give detailed precautions that must be followed when working on or around
battery-powered large batteries. Such measures should always be strictly observed.
Particular attention should be paid to recommendations regarding local environmental conditions and
the provision of protective clothing, first aid and fire-fighting equipment.
警告
危 险
Work in service bypass mode
The PSU is equipped with an internal service bypass. After using it, the input and output terminals of
the UPS can still be energized, even though the UPS is turned off.
警告
危 险
Observing the operating conditions
Damage to the UPS resulting from a faulty connection to the electrical system, or failure to observe
the conditions of failure-free operation of the equipment mentioned in the operating instructions will
be treated as a violation of the terms of the warranty.
警告
危 险
UPS power system
The power supply unit is suitable for installation in 3-phase, 5-wire installations with a grounded
neutral conductor.