Product Introduction
Product Name: HMCXZW-1000kVA/250kV AC/DC Withstand Voltage and Partial Discharge Test System
Manufacturer: Wuhan Goldhome Hipot Electrical Co., Ltd.
Main Applications: Used for AC withstand voltage and partial discharge testing of various electrical equipment, suitable for:
Induced voltage withstand and partial discharge testing of power transformers
AC withstand voltage testing of equipment such as current transformers, power cables, GIS (Gas Insulated Switchgear), circuit breakers, isolating switches, insulators, and bushings
Power frequency withstand voltage testing of large generator sets
Power supply for testing large grounding grids
Key Technical Specifications
Input: Three-phase 380V ±10%, 50Hz
Rated Output Power: 50kW
Output Voltage: 0–350 V, continuously adjustable
Output Frequency: 20–300 Hz, continuously adjustable
Output Current: 0–143 A
Frequency instability ≤0.05%, voltage instability ≤1.0%
Waveform distortion ≤1%, partial discharge on high-voltage side ≤10 pC
Cooling: Forced air cooling
Product Features
- High Waveform Quality: Outputs a sine wave with a distortion rate of <3%; no need to measure peak values.
- High/Low Voltage Isolation: Utilizes optical fiber control to ensure complete isolation between high-voltage and low-voltage control circuits.
- High Portability: Compact and lightweight, suitable for on-site transport and use.
- High Operational Efficiency: Simple wiring; improves efficiency by approximately 50% compared to generator sets.
- Multiple protection functions: Includes discharge breakdown protection, overvoltage setpoint protection, output short-circuit protection, startup zero-point protection, bridge arm amplification circuit protection, and power curve protection.
- High frequency stability: Controlled by a dedicated chip and microcomputer, frequency stability reaches 0.01 Hz.
- Precise voltage control: Output voltage instability <1%.
FAQs
Q: Does this require a qualified professional to perform the test?
A:Yes. The test must be performed by a qualified professional holding a [High-Voltage Testing Certification]. Before performing the test, safety preparations must be made in accordance with Article 168 of the "Electric Power Safety Regulations."
Q: What are the commonly used test frequencies for partial discharge testing?
A: For transformers, the standard frequency is 130–150 Hz; for cables and switches, it is 35–45 Hz.
Q: Does it support automated testing?
A: Yes. It features 【Auto-Tuning】 and 【Auto-Boost】 functions.
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