A home inverter or home UPS is used to convert DC current from battery to an AC current for the connected loads (computers, routers, lights, fans, etc.) in the event of mains failure.

Home inverters and home UPS need to be tested in order to verify their working condition, especially as they have precise electronic circuitry. Testing is required during maintenance and during inspections in the event of a malfunction or failure.

Once an inverter fails, it’s too late for testing. So regular testing is recommended to check for issues and any signs of impending failures or malfunctions.

When a malfunction does occur, a repair can’t be carried out until the part that malfunctioned is identified. Inverter testing is necessary in order to check for malfunctions of the inverter.

Our inverter testing services commonly include voltage and current measurement.

When measuring the voltage and current on the primary side of an inverter, distortions in waveforms can cause differences in measured values. So we use a true RMS voltmeter (digital multimeter) and current meter (clamp meter).

On the secondary side of an inverter, the voltage and current’s fundamental wave include harmonic components. When measuring the voltage on the secondary side of an inverter, we only need the value for the fundamental wave. So we use a true RMS voltmeter with a filter function that eliminates harmonic components. Also, we use a true RMS current meter.

Since the waveform’s frequency varies on the secondary side of the inverter, we take the fundamental wave’s frequency range into account when choosing a voltmeter and current meter.