ZXBXZ Resonant Test System: Technical Overview for Substation Applications

The ZXBZ Resonant Test System is a specialized AC withstand voltage testing solution designed for primary electrical equipment in substations rated up to 550kV. Comprising a variable-frequency power supply, exciting transformer, reactor, and capacitive voltage divider, this system ensures reliable and efficient high-voltage testing for a variety of substation components.

Key Features The system offers both manual and automatic operating modes, providing flexibility in test execution. Users can preset test parameters such as voltage, frequency range, protective current, and operating time. Compared to conventional reactors of equivalent voltage and capacity, the ZBXZ system is more compact and lightweight. It maintains a low temperature rise under rated load and incorporates robust protection mechanisms for enhanced stability and safety.

Constructed with dry-type epoxy casting, the reactors exhibit high mechanical strength and excellent insulation properties. The frequency control source allows adjustable capacity, and the system can be powered by either 220V or 380V single-phase supplies, facilitating easy on-site deployment. Its modular design supports flexible configuration with various reactor types to accommodate different testing requirements.

Technical Specifications

1.Rated Output Voltage: 0–1000kV

2.Output Frequency: 30–300Hz

3.Waveform: Pure sine wave with THD <1.0%

4.Duty Cycle: Capable of continuous operation at full power for 60 minutes

5.Quality Factor: 30–90

6.Frequency Adjustment Sensitivity: 0.1Hz, with instability <0.05%

7.Power Supply: 380/220V ±15%, 50Hz ±5%

Model Configurations and Applications

The ZBXZ series includes multiple models tailored to different testing scenarios:

1.ZBXZ-50/50/25: Suitable for 10kV power transformers, circuit breakers, busbars, PTs, CTs, and cables up to 1km.

2.ZBXZ-108/108/27: Designed for 35kV equipment and cables up to 0.5km, or 10kV cables up to 2km.

3.ZBXZ-200/200/50: Applicable for 110kV power transformers, GIS, PTs, CTs, and longer cable tests.

4.ZBXZ-270/270/45: Ideal for 110kV GIS, circuit breakers, and extended cable testing.

5.ZBXZ-800/400/50: Supports 220kV power transformers, GIS, and high-voltage cable testing.

6.ZBXZ-1600/800/200: Capable of testing 220kV circuit breakers, GIS, and long-distance high-voltage cables.

Each model is configured with specific combinations of variable-frequency sources, reactors (dry-type or oil-immersed), exciting transformers, and capacitive dividers to match the required voltage and capacity levels.

Conclusion

The ZBXZ Resonant Test System represents a versatile and reliable solution for AC withstand voltage testing in substations. Its advanced design, operational flexibility, and robust performance make it an essential tool for ensuring the safety and reliability of high-voltage electrical infrastructure. Technical personnel will benefit from its user-friendly interface, precise control, and adaptable configuration options in various field and laboratory applications.
GDZX is a manufacturer of power detection equipment, offering a diverse range of products with comprehensive models and providing professional technical support. Contact us at +86-27-6552607 or +86-17396104357.Website: http://en.gdzxdl.com/