Description
Yokogawa PZ4000 Power Analyzer Repair and Calibration
The Yokogawa PZ4000 Power Analyzer is a power analyzer – it does not simply measure voltage and current but computes real power, power factor, harmonics and efficiency from them, at high sample rates and across multiple phases. The computed values are what gets reported, and they depend on phase accuracy between channels.
June Company repairs and calibrates the Yokogawa PZ4000 Power Analyzer for power electronics engineers, motor and drive test teams, energy auditors, and efficiency laboratories. Every instrument is repaired at component level and verified against reference standards before it ships back, with the measured results documented.
Common Yokogawa PZ4000 Power Analyzer problems we fix
- Display, keypad or front-panel faults.
- Phase accuracy between channels drifted – the fault that corrupts every power and power-factor figure while voltage and current both read correctly on their own.
- Voltage or current input channel dead.
- Current shunt or clamp input faults.
- Harmonic measurement errors.
- Power or energy computation inaccurate.
- Cooling fan or thermal shutdown.
- Internal power supply faults.
- GPIB, LAN, USB or remote-control faults – which breaks automated test sequences while the instrument still works from the front panel.
FAQs
Are the measurements verified after repair? Yes, against reference standards, with the measured results documented and returned with the instrument.
Voltage and current both read correctly but power is wrong. How? Phase accuracy between channels. Power is computed from the relationship between them, so both can be right individually and the result still wrong.
Every repair carries a 90-day parts-and-labor warranty, with a firm quote before any work begins. Email us or submit a service request.







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