20 - 80 kVA parallel UPS system
User’s and Installation Manual
1018390
Revision C
12
4.3 Storage
UPS modules must be stored in the original packing and shipping pallet. They should be
handled with care. Make sure that you do not stack the pallets when the equipment is
placed to local warehouse for storage.
If the UPS is not immediately installed the following must be remembered:
•
Electrical equipment must always be protected from moisture and weather.
•
The recommended storage temperature is b15°C and +25°C
•
UPS batteries should be charged regularly for at least 8 hours every 6 months to
maintain the battery condition.
4.4 Handling and lifting
UPS modules are shipped on specifically designed packing and pallets. It is easy to move and lift
them with a forklift. Hence, equipment should be lifted in the original and packed condition.
Crane lifting can be used if a suitable lifting net is used. There exist no lifting eyeholes for crane
lifting. Note that equipment must be kept in an upright position and must not be dropped.
4.5 Moving
UPS can be simply pushed into place after unpacking. They are equipped with castors for
easy movement but be careful not to tilt it. Please verify that the surface material, on which
the UPS modules are moved, is strong enough for the heavy weight.
4.6. Initial start-up and upgrades
The authorised field service person shall perform the following procedure and tests during
the start- up the new parallel UPS system:
1. Visual inspection
•
Make a visual inspection of the equipment for signs of damage or foreign material.
Observe the type of ventilation system, the cleanliness of the room, the use of safety
signs, and other environmental factors affecting the functionality or personnel safety.
2. Mechanical and electrical inspection
•
Check the power connections, control wiring terminations, and plugs for tightness or
proper seating. Verify that the alarms log is clear and in the ’green’ condition.
•
Check the parallel UPS system for possible ground leakage, proper input and bypass
voltages, and correct phase rotation. Check the proper battery float voltage.
3. Operating inspection
•
Energise the parallel UPS system and verify the proper DC and AC output voltages.
Check the final DC link voltage and output wave form of the inverter output.
4. Operational training
•
Before leaving the site, the field service engineer shall familiarise responsible personnel
with the operation of the UPS system. The UPS equipment shall be available for
demonstration of the modes of operation.
Normally, the complete parallel UPS system is calibrated at the factory and no output
calibration is needed in the field. However, UPS module upgrades to the existing parallel
UPS system require always the service visit due to the field adjustment of calibration
settings. Special calibration software and tools are required to make the parallel system
function properly with the new, purchased UPS module.