Product Description

The SXBP series high-capacity & high-voltage variable frequency series resonance test complete set is specially developed for AC withstand voltage tests of large-capacity and high-voltage primary equipment in power systems. It can meet the on-site AC withstand voltage test requirements for various capacitive test objects.
The high-voltage test reactors adopt modular series-parallel combination design. It can carry out withstand voltage tests for high-voltage transformers, GIS, SF6 circuit breakers, transformers, bushings and other equipment, and also support withstand voltage tests for long-distance XLPE cables. With wide compatibility for different test samples, it is an ideal withstand voltage test equipment for power system maintenance and power engineering construction companies.

Product Advantages

1.Modular reactors for flexible combination: Reactors can be connected in series or parallel. One set of equipment covers multiple voltage levels, reduces procurement cost and is convenient for transportation and assembly.
2. Low power supply capacity requirement: Based on resonance principle, the required input power capacity is only 1/Q of test capacity. Tests can be conducted on site with 380V power supply.
3. High-quality output waveform: Pure sine wave output with waveform distortion rate ≤1%, ensuring accurate and reliable test data.
4. High frequency adjustment precision: Wide frequency range 20~300Hz, adjustment sensitivity 0.1Hz, instability ≤0.05%, matching different capacitive test samples easily.
5. Safe and stable operation: Equipped with multiple protections, noise ≤65dB. It can run continuously for 60 minutes under rated condition, suitable for field work in substations and construction sites.
6. Wide universality: Compatible with cables, GIS, transformers, transformers and other test objects, suitable for handover test, preventive test and factory test scenarios.

Technical Parameters

Applicable Objects

✅ 110kV, 220kV, 500kV long-distance XLPE cables
✅ GIS high-voltage combined electrical apparatus, high-voltage coupling capacitors, capacitive voltage transformers (CVT) up to 1000kV
✅ Power transformers (test frequency kept within 45~65Hz)
✅ CT, PT, bushings, insulators, busbars and other high-voltage electrical equipment for handover test and preventive withstand voltage test

FAQ

Q1: What equipment can this SXBP series resonance device test?
A: It is used for AC withstand voltage tests of 110kV/220kV/500kV long-distance XLPE power cables, GIS combined electrical apparatus, SF6 circuit breakers, power transformers, CT/PT transformers, CVT capacitive voltage transformers, bushings, coupling capacitors and other capacitive high-voltage equipment. It is widely used for handover acceptance and preventive test projects of substations.

Q2: How much power supply does the equipment need? Can it work with 380V power supply on site?
A: Yes. Variable frequency series resonance boosts voltage by resonance. The input power capacity is much smaller than the test output capacity. Conventional 380V industrial power supply is available on site, no high-power special transformer required. It is suitable for construction sites and substations.

Q3: Are the reactors fixed? Can they be matched for different voltage levels?
A: The reactors adopt modular series-parallel structure. They can be freely connected in series or parallel. One main unit with multiple reactor sections can switch between various voltage and capacity grades to meet different test requirements with better cost performance.

Q4: What is the test frequency range? Does it meet the frequency requirement for transformer tests?
A: The output frequency is adjustable from 20~300Hz. For transformer tests, the frequency can be stably controlled at 45~65Hz, complying with power test regulations.