The difference between frequency modulated and inductive series resonance testing devices

Series Resonant AC Withstand Voltage Testing Devices

There are two main types of series resonant AC withstand voltage testing devices:

1. Frequency-Tuned Series Resonant Device

Type: Intelligent

Principle: Achieves resonance by adjusting the frequency

Frequency Range: Typically 30–300 Hz

2. Power Frequency Inductance-Tuned Series Resonant Device

Type: Traditional

Principle: Maintains a constant frequency of 50 Hz and achieves resonance by adjusting the inductance

Applicable Test Objects and Required Parameters

For Frequency-Tuned Series Resonant Devices:

Cables: Voltage level, length, cross-sectional area

Main Transformers: Voltage level, capacity

Circuit Breakers, Busbars, Busbar Assemblies, Insulators: Voltage level

GIS (Gas-Insulated Switchgear): Voltage level, number of intervals

For Power Frequency Inductance-Tuned Series Resonant Devices:

Hydropower and Thermal Power Plants: Capacity of hydraulic units and thermal power units

Motor Testing: Rated voltage, capacity