Product Description
The AC Resonant Test Set for Power Cable is designed specifically for high-voltage AC withstand testing of underground and transmission power cables.
Power cables have significant distributed capacitance, especially when long cable sections are tested. A conventional AC test source may require substantial power capacity. A variable-frequency series resonant system is designed to handle this capacitive load efficiently.
The system can be configured for different cable voltage classes and lengths by selecting appropriate reactor combinations and operating frequency.
Cable Testing Functions
- 10kV cable AC withstand test
- 35kV cable AC withstand test
- 66kV cable testing
- 110kV cable AC withstand test
- 220kV cable AC withstand test
- XLPE cable insulation testing
- Cable commissioning test
- Cable acceptance test
- Cable maintenance testing
- Post-installation withstand testing
Key Features
- Variable-frequency resonance
- Modular high-voltage reactors
- Adjustable test frequency
- High-voltage output
- Low input power requirement
- Portable configuration
- Digital voltage measurement
- Automatic frequency control
- Test timer
- Safety interlock
- Flashover protection
Current industry configurations demonstrate applications ranging from 10 kV and 35 kV cables to 110 kV and higher-voltage cable systems, with the actual achievable test length determined by cable capacitance and system configuration.
FAQ
Q: How do I choose the correct resonant test system for my cable?
A: The key parameters are cable voltage rating, conductor size, cable length, capacitance, required test voltage, test duration and applicable test standard.
Q: Can one system test different cable lengths?
A: Yes. Modular reactor series/parallel combinations and frequency adjustment allow the system to accommodate different capacitive loads within its rated range.
Q: Is this equipment suitable for on-site cable testing?
A: Yes. Portable variable-frequency resonant systems are widely used for field commissioning and acceptance testing.
