Wuhan Goldhome Hipot Electrical Co., Ltd. is one of the leading manufacturers and suppliers of ac series resonant test set for cable gis in China. With abundant experience, our factory offer high quality customized products made in China with competitive price. Welcome to contact us for quotation.
Products overview & Applications
HMCXZ-220kVA/66kV Variable-Frequency Series Resonance Withstand Voltage Test System
System Configuration: The complete system consists of six components: a variable-frequency controlled power supply, an excitation transformer, four dry-type high-voltage reactors, a capacitive voltage divider, compensation capacitors, and supporting test accessories. The reactors feature an independent modular design, allowing for flexible series and parallel configurations.
Scope of Application: Specifically designed for 66kV cross-linked cables, this system can be configured with various reactor combinations to perform power frequency and variable frequency AC withstand voltage tests on 10kV/35kV cross-linked cables, transformers rated at 66kV and below, GIS, high-voltage switches, current transformers, insulators, busbars, and other electrical equipment. It is suitable for on-site operations by high-voltage testing departments and power installation and maintenance units at the municipal, county, and local levels.
Products indication
- Variable-frequency Power Supply (11 kW)
Input: 220 V/380 V ±15%, 50 Hz; Output: 0–400 V, 30–300 Hz, 0.1 Hz frequency increments; Rated output current: 0–27.5 A; Frequency instability ≤0.02%; Integrated full set of protections including overvoltage, overcurrent, emergency stop, and reset.
- Dry-Type High-Voltage Reactors (4 units, 55kVA/33kV each)
Single-unit rated parameters: 33kV, 1.667A, inductance 60H ±5%, applicable frequency 30–300Hz; dry-type insulated cylindrical structure with lifting slots and grounding markings; continuous full-load operation for 60 minutes, temperature rise <60°C.
- Excitation Transformer (11 kVA)
Input: 200 V/400 V; three output voltage levels: 1.5 kV/3 kV/6 kV, corresponding to rated output currents of 7.3 A/3.7 A/1.8 A, suitable for various series and parallel reactor configurations and test voltage scenarios.
- Capacitive Voltage Divider (80 kV/1000 pF)
Rated voltage: 80 kV; capacitance: 1000 pF; applicable frequency range: 30–300 Hz; measurement accuracy: Class 1.5.
- Compensation Capacitors
Standard configuration includes 70 kV/10,000 pF and 35 kV/20,000 pF compensation capacitors for resonance compensation of short cables and small-capacitance test specimens.
- Accessories: One complete set of test accessories, including test leads, insulated supports, and terminal blocks, is included as standard equipment.
on-site Test
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