Product Details

35kV Series Resonant Test Equipment Product Introduction



Transformers, GIS systems, SF6 switches, CT/PT, insulators, busbars, cables, bushings, and other capacitive equipment are the most common primary electrical equipment in substations. According to the test regulations for withstand voltage of primary electrical equipment in substations at 220V and below, the corresponding AC/DC withstand voltage test equipment must not only meet the test conditions of high voltage and low current but also meet the conditions of low voltage and high current, requiring a wide range of applicability. Using the principle of series resonance, the main equipment consists of a variable frequency power supply control box (operating console), an excitation transformer, reactors, and a capacitive voltage divider. By connecting a rectifier stack and a microammeter to the capacitive voltage divider, DC withstand voltage tests can be completed. Due to the excellent filtering characteristics after system resonance, the DC voltage produced is comparable to the DC voltage rectified from a common test transformer. It is an ideal withstand voltage equipment for municipal, county-level high-voltage testing departments and power installation, repair, and test engineering units.



◆ Reference selection schemes for resonant test devices: 

A. Reference selection scheme for cable resonant test devices

B. Reference selection scheme for generator resonant test devices

C. Reference selection scheme for resonant devices for substation electrical equipment

D. Reference selection scheme for resonant boosting devices for CVT calibration

Series Resonant Test Equipment Product Aliases

AC withstand voltage resonant device, variable frequency resonant, variable frequency series resonant, series resonant, series resonant transformer,



Product Features

1. Reactors of the same voltage level and capacity are smaller in size and lighter in weight; temperature rise is small at rated load; dry-type epoxy casting ensures high mechanical strength, good electrical insulation performance, and is aesthetically pleasing and reliable 

2. The variable frequency power supply control box has a large capacity margin; strong protection functions; good output waveform; good stability; multiple working modes for convenient operation; compatible with single-phase 220V or three-phase 380V input power, convenient for on-site power access

3. Flexible configuration. Different types of reactors can be selected to meet different test requirements, achieving multiple uses with one machine and high cost performance

Technical Specifications:

Series Product Configurations and Applicable Scope: 

Note: Customized solutions can be provided based on the parameters of the test object.