| Item | Frequency-modulated Series Resonance | Power Frequency Inductance-adjusted Series Resonance |
| Type | Intelligent type | Traditional type |
| Working Principle | Resonance achieved by frequency adjustment, frequency range: 30-300Hz | Fixed 50Hz frequency, resonance achieved by inductance adjustment |
| Applicable Test Objects & Required Parameters | 1. Cable: voltage class, length, cross-sectional area | 1. Hydraulic & thermal power unit: unit capacity |
| 2. Main transformer: voltage class, capacity | 2. Motor: rated voltage, capacity | |
| 3. Circuit breaker, busbar, insulator: voltage class | ||
| 4. GIS equipment: voltage class, bay quantity | ||
| Application | AC withstand voltage test | AC withstand voltage test |
Variable Frequency AC Resonant Test System VS Power Frequency AC Resonant Test System
May 22, 2026
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