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3.3.-
Safety warnings with respect to the batteries.
• The battery voltage presents a risk of electrocution and may cause high short circuit currents. Before handling,
take the following preventive measures:
- Disconnect the protection elements and make sure the unit is turned off.
- When connecting battery modules to the unit, respect the polarity indicated on the labelling.
- Wear gloves and rubber footwear.
- Use tools with insulated handles.
- Remove all rings, bracelets and other hanging metal objects.
- Do not place tools or metal objects on the batteries.
- Do not short circuit the battery junctions of the unit or possible battery modules, for risk of causing an explosion.
• Do not short circuit the terminals. This is harmful for the unit and for the batteries themselves
• Avoid efforts and mechanical shocks.
• A battery must never be exposed to high temperatures, for risk of explosion.
• Do not break the housing or attempt to open it. The internal electrolyte is toxic and harmful to skin and eyes. In the event
of acid coming into contact with parts of the body, rinse rapidly with abundant water and go to the closest medical service.
• The batteries are a serious hazard for health and the environment and must be eliminated in line with current
regulations.
• When replacing the batteries, use others of the same voltage, capacity and make.
4.- WORKING PRINCIPLE.
The Uninterruptible Power Supply UPS On-Line series NX provide a constant and conditioned voltage to the loads to
be supplied. They protect them against power failure, brown outs, voltage fluctuations, surges and mains interfer-
ence and eliminate any transient before directing the power to the DC Bus. The inverter transforms the DC power into
FILTER
AC
INPUT
FUSE
BATTERIES
RECTIFIER
RELE
BOOSTER
CHARGER
Fig. 1. Block diagram (normal operation).
BYPASS LINE
INVERTER
FILTER
DC CONVERTER
- 22 -
Neutral
AC
OUTPUT
Phase
BYPASS
FILTER
RELE
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