Power Quality Analyzer

Portable Power Quality Analyzers and Recording Instruments

Four instruments for measuring power quality on site: a portable power quality meter, a handheld analyzer, a three-phase current unbalance analyzer and a waveform recorder.

What is in this section

• Portable measurement — the HF-PQ-204 portable power quality meter measures frequency over 45–55 Hz centred on 50 Hz, input voltage from 20 to 900 V and input current from 0.06 % to 6 % of range with custom ranges at 25 %, 200 %, 500 % and 1000 %, holding fundamental voltage amplitude to 0.5 % FS or better, current to 1 % FS or better and phase difference to 0.5 ° or better.
• Handheld analysis — the HF-PQ-205 handheld power quality analyzer covers 0–800 V with automatic range switching on three voltage channels (UA, UB, UC) and three current channels (IA, IB, IC), reading phase angle over 0–359.99 ° and frequency over 45–65 Hz; clamp current transformers are supplied as standard 5 A/25 A with 100 A/500 A and 1000 A/2000 A ranges available.
• Unbalance and waveform recording — the HF-PQ-T201 three-phase current unbalance analyzer targets the negative-sequence and unbalance problems that trip motors, and the HF-PQ-T202 waveform recorder captures the raw record you need when a disturbance has to be shown to someone else.

How to choose a power quality analyzer

Decide what has to be proven. A handheld analyzer is enough to confirm voltage, current, phase and frequency at a panel; an unbalance or a disturbance complaint needs a recorder that stores the waveform, and harmonic cases need a unit with enough bandwidth and channels. Check the current range against the circuit you will actually clamp — a 5 A clamp is useless on a 1000 A feeder.

Every instrument in this section is sourced from qualified partner factories in China, verified and tested against its datasheet before shipment and delivered with its test documentation. Houfeng is a trading company and supplier, not a manufacturer.