Partial discharge testing device UHVIW

manualtransformerprecision

Overview
The UHVIW Series non-partial-discharge fault simulation test device is designed for on-line installation and testing on energized high-voltage equipment (including GIS). The instrument digitizes signals via high-speed AD conversion and applies digital signal processing and adaptive filtering to improve measurement reliability and reduce interference.

Product parameters
Intended for on-line detection and localization of partial discharge in high-voltage equipment.

Technical parameters
High-voltage non-partial-discharge transformer
Rated voltage: 100 kV
Rated capacity: 5 kVA
Input voltage: 220 V
Input current: 22.7 A
High-voltage current: 0.05 A
Partial discharge capacity at rated voltage: ≤ 3 pC (system-level assessment)

Coupling capacitor
Rated voltage: 100 kV
Rated capacitance: 100 pF
Local discharge capacity at rated voltage: ≤ 3 pC
Discharge model: particle discharge (configurable to simulate GIS tip, suspension, air gap, particle, surface and combined discharges)

Features

• Compact design enabling installation in limited spaces
• Lightweight components for ease of handling and transport
• Rugged construction suitable for long-distance shipment
• Capability to perform various tests in unshielded environments
• All high-voltage parts enclosed in a sealed compartment to protect personnel
• Optional sleeve allows pressure testing of conventional equipment for wider applicability
• Built-in high-voltage measurement and partial-discharge coupling capacitors
• System partial discharge level < 3 pC to ensure accurate test data

Working principle
The device supplies a controlled high voltage (0–100 kV) with system partial discharge ≤ 3 pC at rated voltage. In live operation the discharge type can be selected and parameters such as inception voltage, extinction voltage and discharge intensity can be adjusted per channel. Using conventional partial discharge detectors and wireless sensing equipment, it supports testing of multiple discharge types (GIS tip, suspension, air gap, particle, surface) and combinations thereof, enabling experiments and validation for pulse current, UHF, ultrasonic, high-frequency, SF6 gas analysis and other PD detection technologies.

Technical specifications

• Model / Series: UHVIW Series
• Application: On-line detection and localization of partial discharge in high-voltage equipment
• Transformer rated voltage: 100 kV
• Transformer rated capacity: 5 kVA
• Transformer input voltage: 220 V
• Transformer input current: 22.7 A
• High-voltage current: 0.05 A
• Partial discharge capacity at rated voltage: ≤ 3 pC (system-level)
• Coupling capacitor rated voltage: 100 kV
• Coupling capacitor rated capacitance: 100 pF
• Coupling capacitor local discharge capacity at rated voltage: ≤ 3 pC
• Discharge model: particle discharge (supports GIS tip, suspension, air gap, particle, surface and combined discharge modes)