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6. Installation
6.5 Rack mounting
6.6 Mains
6.7 Battery installation and connection
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The battery charger and batteries have to be installed in a 19" rack that complies with Class 3k5
of EN60721-3-3:1995 +A2:1997 and IP30 of EN60529:1991+A1:2000. Make sure all the ventilation
openings of the unit are not blocked. Make sure that the installed unit is tightly fixed to the
19" rails of the rack
(at the front); when required,
so the rear of the unit is also fixed to the 19" rack.
Use a double pole D curve circuit breaker (4A for 24 V version and 6A for 48 V version) to connect
the power supply to the mains circuit.
Use a double pole isolating switch (e.g. isolator or disconnecting switch) by connecting the
batteries to the supply. An additional fuse is also recommended to protect this circuit.
In order to avoid any electrical damage, the cables used to connect the batteries must precisely
match with the supply configuration (100 or 150A) : maximum sheath temperature, cross
section, allowed current, maximum voltage.
The battery temperature sensor must be placed as close to the battery as possible but doesn't
need to be in contact with it. It may also be fixed on one of the battery cables (close to the
batteries) by mean of two ty-wraps.
Make sure that the four batteries are tightly fixed to the 19" rack, including the battery tray (if needed)
and that they can not move around freely. Use of the special brackets to mount the batteries is
mandatory (2 brackets are included with the 19" rack and 2 with the optional battery tray).
Battery wiring instructions:
Every 4 hours the battery charger measures the internal resistance of the batteries including
the wiring connections and fuse. The threshold to trigger a fault is 26m Ω±10% at 48 V when
the jumper is set to '75' and 40 m Ω±10% at 48 V if the jumper is set to '50'. When this threshold
is exceeded this will be signalled as a battery fault and means that the power supply with its
associated battery will not have the required back-up duration in case of an AC mains failure.
use brackets to accommodate
the
installation
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