AC Electronic Loads

Programmable AC Electronic Loads

NH Research, Inc.’s (NHR) AC Electronic Loads were designed for test applications that require linear and non-linear AC loading in several emulation modes with Power and Crest Factor control. This programmable versatility allows testing with a wide variety of potential field operating conditions to assure unit-under-test (UUT) reliability.

AC Electronic Loads Features

Emulation Modes

  • Constant Current (CC) – provides current to be drawn constantly, making it suitable for non-linear, linear and regulation loading.
  • Constant Resistance (CR) – allows the load to emulate a power resistor.
  • Constant Voltage (CV) – allows emulating a shunt regulator.
  • Constant Power (CP) – emulates a constant-power load such as a switching power supply
  • Short Circuit (SC) – allows the load to test the UUT’s short circuit protection capability.
  • Unity Power Factor (UPF) – causes power factor to be as close as possible to unity, useful when the input voltage is non-sinusoidal.
  • Complex Non-Linear Waveform (CNL) – allows the user to define the waveform to prevent UUT current overstressing in the event of a voltage collapse.

These comprehensive capabilities provide the user almost every conceivable AC loading condition.

Internal Measurements

  • Frequency
  • Voltage
  • Peak Voltage
  • Current
  • Peak Current
  • Crest Factor
  • Apparent Power
  • True Power
  • Peak Power
  • Reactive Power
  • Power Factor
  • Resistance

This is done by combining high-resolution measurements with precision ranging. The ability to make measurements internally eliminates multiple external measurement instruments resulting in a more compact, less costly and considerably faster test system.

AC Electronic Loads Series

AC Electronic Loads

programmable ac electronic load model 4600This power instrumentation for customer-built test systems consists of programmable AC Electronic Loads for use in a customer designed & built test systems.


NH Research, Inc. | 16601 Hale Ave., Irvine, CA 92606 NH Research, Inc. USA Website | Ph: (949) 474-3900 | Email: sales@nhresearch.com | NH Research, Inc. China Website nhresearch.com.cn