Operating conditions and environmental requirements for frequency conversion series resonant withstand voltage device

1、 Usage requirements: For indoor use.

2、 Altitude: The operating area has an altitude not exceeding 1000m.

3、 Beyond an altitude of 1000m, it shall be negotiated between the user and the manufacturer.

1. Temperature range for series resonance test environment: The operating temperature range is -25 ℃~+45 ℃,

2. Series resonance uses humidity: relative humidity does not exceed 80%.

3. Seismic requirements: The resonant device should withstand an earthquake intensity of seven degrees without damage, that is, it should not be damaged under the action of horizontal acceleration of 0.15 minus vertical acceleration of 0.1g.

Series resonance test, the variable frequency series resonance device mainly consists of a variable frequency controller, excitation transformer, high-voltage reactor, high-voltage voltage divider, etc. Variable frequency controllers are divided into two categories: desktop controllers with 20kW and above, and portable box controllers with 20kW and below; It consists of a controller and a filter. The main function of a variable frequency controller is to convert a 380V or 200V AC power frequency sine wave with fixed amplitude and frequency into a sine wave with adjustable amplitude and frequency. And provide power for the entire equipment. The function of the excitation transformer is to raise the voltage output by the variable frequency power supply to the appropriate test voltage. The high-voltage reactor L is an important component of the resonant circuit. When the power frequency is equal to 1/(2 π√ LCX), it undergoes series resonance with the test sample CX.

The series resonance, series resonance test, and series resonance withstand voltage test devices are suitable for the handover and preventive testing of large capacity, high-voltage capacitive samples such as power cable series resonance, power transformer series resonance, generator sets (hydro generators or thermal power generators), motor series resonance, switchgear series resonance, GIS switches, etc.

Wuhan UHV specializes in producing series resonance (also known as variable frequency series resonance withstand voltage device) and has been engaged in the electrical measurement industry for many years. Its products have first-class quality and welcome customers to come and purchase.