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Avtron K711 Radiator Cooled Load Bank (5-1250kW)

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The Avtron K711 load bank has been renamed and is now the Avtron 1100 load bank. Please visit our new product page here for current information and pricing.

The Avtron K711 Duct or Radiator Mounted Load Banks are designed for radiator or duct mounting on diesel engine generator sets. The load bank is permanently mounted to the front of the engine generator and sized to match the width and height of the radiator core or exhaust duct opening. The load bank utilizes the engine cooling air rather than an internal cooling fan found on conventional load banks. A top and bottom mounting flange, or removable duct adapter flanges are supplied for mounting and ease of installation.  The load banks are typically sized at 50-60% of the generator KW rating and used to periodically test the generator or to supplement the real generator load to minimize the effects of diesel engine "wet-stacking".


  • Intended for use as a supplemental load for lightly loaded engine generator sets
  • Helps burn-off harmful carbon deposits in generator engine to increase engine life
  • Recommended sizing of radiator load bank at 40-60% of engine nameplate rating
  • Designed for permanent duct or radiator mounting and available in a variety of frame dimensions
  • Utilizes engine cooling air or separately powered duct blowers rather than an internal cooling fan found on conventional load banks
  • Formed aluminized steel frame enclosure sized to match radiator or exhaust duct opening
  • Standard K711 depth is 13 inches; for applications where amount of load element KW required exceeds available 13 inch depth, K711A can be used with a 26 inch depth
  • K711L Frame can be used for special mounting of 1000 KW Load Banks to high capacity 2000/2500 KW generator sets
  • Designed for NEMA-1 indoor installation; NEMA- 3R outdoor construction with bolt-on louver assembly also available
  • Lifting eyes and radiator duct flange included to simplify installation
  • Fully supported Avtron Helidyne (TM) resistive load elements made of corrosion resistant chromium alloy wire
  • Engineered to operate at conservative temperature ratings for more stable loading and extended resistance element operating life
  • No cool down period needed after load bank operation
  • Built-in thermal switch drops all load if an over-temperature condition is detected
  • Local control panel with POWER ON/OFF switch, MASTER LOAD ON/OFF switch, and individual load step toggle switches for application of individual load sections


K711 Load Bank Spec Sheet


  • Control Power Transformer
  • Outdoor Construction with Bolt-on Louver Assembly
  • Automatic Load Step Controller
  • ADMS Digital Metering System, Remote Mounted
  • Remote Control Panel with Enclosure
  • Remote I/O for Interface with Switch Gear
  • Designs for International 50/60 Hz voltages
K711, K711A, K711L
Max Capacity Options:
5-1250 kW
Three Phase
Voltage Options @ 60 Hz:
208, 240, 480,or 600 VAC
Voltage Options @ 50 Hz:
380, 400, or 416 VAC
Load Step Resolution Options:
As Required
Control Power:
External 120 VAC, single phase, 50/60 Hz (Control transformer optional)
NEMA 1 Indoor standard; NEMA 3R Outdoor optional
Dimensions LxWxH (inches):
Height/width varies per application; K711 - 13" depth, K711A - 26" depth
Varies per application
Limited Warranty:
1 Year

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