Partial discharge tester UHVKW

for digital switchgear

Overview
The UHVKW series partial discharge simulation test device is designed for installation and operation while the switchgear remains powered. Signals are digitized by a high-speed AD conversion circuit and detection reliability is ensured through digital signal processing, adaptive filtering and interference suppression methods.

Product purpose and summary
The device reproduces typical partial discharge phenomena inside switchgear—tip discharge, suspended discharge, air-gap discharge, particle discharge and surface discharge—to support R&D, type testing and maintenance training. Main components include a high-voltage transformer, coupling capacitor, configurable discharge modules and a control system with synchronized measurement interfaces.

Technical parameters
Parameter — Value
Rated voltage — 30kV
Rated capacitance — ≤100pF
Rated capacity — 3kVA-20kVA
Test frequency — 30Hz-300Hz
Input voltage — 0-220V
Instrument voltage — 0-100V
Partial discharge level — ≤1PC
Power frequency withstand voltage — 30kV/1min
Simulated discharge types — Tip, particle, surface, air-gap, suspension

Features

• Realistic simulation: Designed to reproduce the physical conditions inside switchgear for accurate partial discharge emulation.
• Comprehensive fault types: Capable of generating tip, suspension, air-gap, particle and surface discharges, individually or in combination.
• Controllable output: Discharge type, start and extinguishing voltages and intensity are adjustable for repeatable testing.
• Multi-technology detection support: Provides a platform for pulse current, UHF, ultrasonic and transient ground voltage testing methods.
• Synchronized measurement: Built-in pulse current coupling and verification units enable synchronous detection for instrument assessment.
• Stable modules: Reusable discharge modules with consistent characteristics.
• Visualization: Integrated infrared video probe for internal observation and recording of discharge events.
• Operational convenience: Fault occurrence and cessation are controllable from outside the device.
• Safety design: High-voltage booster and isolation measures ensure safe operation during tests.

Precautions

• Ensure the instrument casing is reliably grounded during experiments.
• Keep unrelated items off and away from the equipment panel during testing.
• Verify supply voltage before startup: AC 220V ±10% 50Hz.
• When replacing fuses or accessories, use the models specified for the instrument.
• Protect the instrument from moisture and oil.
• Confirm tested equipment is powered off and disconnected from other live devices before conducting experiments.
• Before startup, set the output control to the zero position.

Technical characteristics

• Rated voltage: 30kV
• Rated capacitance: ≤100pF
• Rated capacity: 3kVA-20kVA
• Test frequency: 30Hz-300Hz
• Input voltage: 0-220V
• Instrument voltage: 0-100V
• Partial discharge level: ≤1PC
• Power frequency withstand voltage: 30kV/1min
• Simulated discharge types: Tip discharge; particle discharge; surface discharge; air-gap discharge; suspension discharge