1.
on high-voltage electrical equipment using the principle of . It uses a variable frequency power source and reactor to achieve high voltage with low input power.
On-site AC withstand voltage tests for HV and UHV XLPE cables
GIS (Gas-Insulated Switchgear) AC withstand tests
Compact and energy-saving compared to traditional test sets
Safe and efficient for large-capacitance loads
2.
A for high-voltage test systems based on the resonance principle, which may be AC or DC (though most commonly AC in practice).
Difference from #1:
3.
A
High-voltage reactor
Short-length cable or transformer tests
4.
A , using AC resonance to apply a high voltage across long-length or high-capacitance cables.
Pre-testing before PD (partial discharge) detection
5.
A general-purpose test kit based on resonant principle, can be for AC or DC applications, though usually refers to AC test equipment.
Compact and cost-effective for lower voltage testing
| AC-specific | |||
|---|---|---|---|
| Full-featured system for field/factory testing | |||
| Small-scale or flexible testing |
| On-site, large system → | |
| >110kV → Full AC Resonant System | |
| <66kV → Portable Resonant Test Set may suffice |




