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Avtron K922A MV Load Bank (3000-7000kW)

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The Avtron K922A MV load bank has been renamed and is now the Avtron 9100 load bank. Please visit our new product page here for current information and pricing.

The Avtron K922A resistive medium voltage permanent load bank is ideal for testing medium-voltage generators or turbines. Avtron is leading the industry by offering a true medium-voltage load bank while others still supply a conventional step down transformer and a low voltage load bank (typically 480 VAC). A medium-voltage load bank eliminates the need for a costly step-down transformer, which reduces the overall package size and installation cost. It is ideal for high power resistive loading of medium voltage generating systems in factory production lines or test cells. It is designed for permanent outdoor mounting.


  • Medium voltage resistive load bank designed for permanent outdoor mounting
  • Ideal for high power resistive loading of medium voltage generating systems in factory production lines or test cells
  • Direct connection to medium voltage source
  • No step down transformer required reducing the overall package size and installation cost
  • Each load bank module typically rated between 3 and 7 MW
  • Multiple modules can be used when tens or hundreds of megawatts are required
  • Fabricated from heavy gauge formed steel and welded structural steel to make a rigid drip-proof structure
  • Structural extension legs are provided for mounting the load bank at the proper field elevation
  • Load bank incorporates 4, 6, or 8 independent resistive stacks with each stack containing its own integral cooling fan
  • Cooling air for the resistive load elements is drawn in from the bottom and exhausted out the top
  • Blower motors controlled by motor starter relays located within the load bank and feature a time delay starting sequence to reduce in-rush current
  • External power source rated 460 VAC, 3-Phase, 60 Hz required to power the blowers
  • Weather-resistant exhaust hoods and welded intake screens provide maximum protection to the resistor cases and blower assemblies
  • Avtron Helidyne (TM) load elements helically wound from nickel chromium resistance alloy and specially insulated for medium voltage
  • Fully supported elements across their entire length with ceramic insulators on stainless steel support rods
  • Medium-voltage compartment houses the main input load bus connections as well as the medium-voltage vacuum load step contactors
  • Operator controls housed in a separate remote enclosure
  • POWER ON-OFF switch with POWER ON light
  • BLOWER START/STOP push buttons with a BLOWER FAILURE light
  • individual load step ON-OFF toggle switches which actuate the medium-voltage vacuum contactors located within the load bank
  • Differential air pressure switches are provided for each blower
  • Over-temperature protection is provided via a thermal switch for each resistor stack
  • Should an air-loss or over-temperature condition occur, all load is automatically removed
  • Fuses and motor-overload relays also protect the blowers


K922A Spec Sheet


  • SIGMA Network Control
  • ADMS Digital Metering (V, A, KW, Hz) with Communicator EXT Data Logging Software
  • PLC or computer-based controls
  • -40° F Arctic Design
Max Capacity Options:
3000-7000 kW
Voltage Options:
5000-15,000 VAC, Three Phase
Minimum Load Step Resolution:
250, 500, or 1000 kW (Bulk load also available)
Control Power:
120 VAC 1 Ph 60 Hz (control transformer optional)
Dimensions LxWxH (inches):
187 x 102 x 192 (typical 4500 kW module); Varies by capacity
Weight - Load Bank:
13,000 lbs. (3000-5000 kW), 17,000 (5500-7000 kW)
Limited Warranty:
1 Year

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