Description
Avtron Outdoor Resistive Load Bank • Part Number K975A 994213
2-2
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C A U T I O N
Voltage must not be connected to the Load Bank resistance elements
if the airflow switches have not closed. It is the customer’s
responsibility to ensure all load is dropped if an air failure is detected.
DO NOT jumper out any air switches to prevent nuisance tripping.
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C A U T I O N
Voltage must not be connected to the Load Bank resistive elements if
any fault (overtemperature, motor overload, air failure) is indicated.
It is the customer’s responsibility to ensure all load is dropped if any
fault or alarm is detected.
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The K975A Load Bank is fabricated using heavy-gauge aluminized sheet steel to make a rigid
structure. Mounted within the structure are the load element resistor assemblies, the blower
assemblies, and the necessary load step contactors, motor starters, motor overload relays, fuses, and
customer connection bus bars. The cooling air is drawn in from one end, forced across the resistor
elements, and exhausted out the opposite end. The component enclosure compartment has a
temperature controlled heater that may be used to prevent condensation on the inside of the contactor
enclosure of the Load Bank.
The units are equipped with louvers (with travel/storage covers) on the inlet and outlet openings that
protect the motors and resistor assemblies from the weather. The Load Bank uses a formed sheet
metal base to facilitate handling by a forklift truck. Bolt holes are supplied in the base to permit
permanent mounting to a pad.
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