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
- 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.
- Peak Voltage
- Peak Current
- Crest Factor
- Apparent Power
- True Power
- Peak Power
- Reactive Power
- Power Factor
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.