Product Introduction
The SXBP Variable Frequency Resonance Test System is using variable-frequency series resonance technology, SXBP generates high AC test voltage by matching the resonant circuit to the capacitive load of the equipment under test.
It can be configured for applications involving power cables, transformers, GIS, switchgear, CT/PT and other high-voltage equipment up to 110 kV class, with system output configurations available up to 800 kV RMS.
System Components
- Variable-Frequency Power Supply
The power supply generates adjustable-frequency excitation power and provides precise frequency control.
- Excitation Transformer
The excitation transformer provides the required voltage conversion between the power supply and resonance circuit.
- Resonant Reactor
The reactor provides the inductive component required to establish resonance with the capacitive test object.
- Capacitive Voltage Divider
The divider measures the high-voltage output during the test and provides voltage monitoring.
- Control System
The control system manages the test process and monitors operating parameters.
Technical Data
| Specification |
SXBP Series |
| Output Voltage |
0–800 kV RMS* |
| Output Frequency |
20–300 Hz |
| Frequency Resolution |
0.01 Hz |
| Frequency Stability |
≤0.01% |
| Output Waveform |
Sine Wave |
| Waveform Distortion |
≤1% |
| Quality Factor |
≥20 at maximum load |
| Continuous Working Time |
15/60 min |
| Input Power |
Single-phase 220 V / Three-phase 380 V |
Applications
- Manufacturing Facilities
For routine and type-related AC withstand testing of electrical equipment.
- Testing Laboratories
For controlled high-voltage insulation testing and verification.
- Power Projects
For on-site testing during installation and commissioning.
- Maintenance & Inspection
For preventive testing of high-voltage equipment after maintenance or repair.
FAQ
Q1:What is the SXBP Variable Frequency Resonance Test System used for?
It is used for high-voltage AC withstand testing of power cables, transformers, GIS, switchgear, CTs, PTs, insulators and other electrical equipment.
Q2:What is the maximum output voltage?
The system can be configured for up to 800 kV RMS, depending on the selected configuration.
Q3:What frequency range is available?
The standard output frequency range is 20–300 Hz.
Q4:Why is variable frequency important?
The capacitance of different test objects varies considerably. Variable-frequency operation allows the resonance point to be adjusted according to the characteristics of the load.
Q5:Can SXBP test long cables?
Yes. The system is suitable for AC withstand testing of medium- and high-voltage cables. Cable length and capacitance are important parameters for determining the appropriate configuration.
