OMHLB480-375 M36548
INTRODUCTION
The load bank HLB480-375 is designed for battery discharge testing of lead acid at various power
levels upto 174KW. Eleven switched steps are available to achieve the required load profile .
The unit comprises of pre-set, high powered resistors channels of various rating, with each
individual channels selectable via panel mounted switches and internal contactors.
A 3.5 metre DC cable set is provided plus a 5 metre auxiliary cable set.
The load bank is force cooled using a mains powered 240V single phase fan.
Failure of the auxiliary mains supply will automatically de-energise the load contactors thereby
preventing damage to resistor elements.
Test sockets are provided to allow measurement of DC volts and amps using external digital
multimeters.
SAFETY CONSIDERATIONS
1. The equipment is designed for use in a clean, dry, indoor environment and should only be
operated by competent electrical engineers who are completely familiar with the operation and
specification of the load bank.
2. As with any electrical equipment the load bank should not be used in close proximity to recently
charged batteries where a build up of explosive gases may have occurred.
3. Operators must ensure that interconnecting cables are correctly rated to carry the required load
current and adequately insulated to prevent the possibility of electric shock when operating at
high voltages..
4. All resistors are rated for operation when force cooled and therefore can only be used when the
fans are running
5. Do not attempt to insert or remove the battery power plug with the load circuit energised.
6. When in use the load bank should be cordon off using safety barriers.
7. The load bank should only be operated in an area with adequate ventilation.
8. During operation the care should be taken as to the exhaust air outlet will be hot.
9. Do not smoke in the proximity of batteries.
10.Operators working with batteries should not wear rings, jewellery or metal watch straps.
11.Only insulated tools should be used when working on battery connections.
12.Refer to battery charger or the battery manufacturers operating instructions for additional safety
precautions.
13.Ensure all personnel are familiar with the location of the nearest safety kit and eye wash facility.
14.During operation the load bank should not be covered or positioned to restrict air flow.
15.Caution metal surfaces will be hot during operation
16.Always run the fans for several minutes after a test, with the load switched off to cool the
resistor elements.
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