AC/DC voltage withstand test device

NegotiableUpdate on 02/14

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The AC/DC withstand voltage test device applies the principle of series resonance, using an excitation transformer to excite the series resonance circuit. By adjusting the output frequency of the variable frequency controller, the reactor inductance L and the sample capacitance C in the circuit undergo series resonance, and the resonance voltage is the voltage applied to the sample. The frequency conversion resonance test device is widely used in industries such as power, metallurgy, petroleum, and chemical engineering, and is suitable for the handover and preventive testing of high-capacity, high-voltage capacitive specimens.

Product Details

　　AC/DC voltage withstand test deviceScope of application

The complete set of variable frequency series resonance test device applies the principle of series resonance, uses an excitation transformer to excite the series resonance circuit, and adjusts the output frequency of the variable frequency controller to cause series resonance between the reactor inductance L and the sample capacitance C in the circuit. The resonance voltage is the voltage applied to the sample. The frequency conversion resonance test device is widely used in industries such as power, metallurgy, petroleum, and chemical engineering, and is suitable for the handover and preventive testing of high-capacity, high-voltage capacitive specimens.

Suitable for AC withstand voltage test of 10KV, 35KV, 110KV, 220KV, 500KV cross-linked polyethylene power cables

Suitable for 66KV, 110KV, 220KV, 500KV, GIS AC withstand voltage test

Suitable for power frequency withstand voltage of large generator sets and power transformers

Induction withstand voltage test applicable to power transformers

　　AC/DC voltage withstand test deviceMain technical indicators

(1) Working temperature range: -10~45 ℃

(2) Working humidity range: ≤ 90%

(3) Altitude: ≤ 1000m

(4) Power supply voltage: 380V ± 10%, three-phase or 220V ± 10%, single-phase (10KW and below) 50/60Hz

(5) Power supply capacity: 0-300KW

(6) Rated output voltage: 0-1000KV

(7) Rated output capacity: 0-35MVA

(8) Working frequency range: 30-300Hz (frequency range can also be relaxed according to user requirements)

(9) Frequency regulation resolution: 0.02Hz; instability ≤ 0.05%

(10) Noise: ≤ 60dB

(11) System measurement accuracy: Level 1

(12) Output waveform: sine wave, waveform distortion rate ≤ 1%

(13) Reactor Q value: 30-120

(14) The system has fully automatic protection such as IGBT, overvoltage, overcurrent, and sample flashover

Main Features

1. Small size and light weight, suitable for on-site use

The variable frequency controller integrates voltage regulation, frequency modulation, control, and protection functions, eliminating the need for bulky voltage regulators, and is easy to operate with intuitive readings. Due to the high Q value of the system (30-120), it effectively solves the constraints of insufficient power capacity on on-site testing. When the voltage level is high, the reactor adopts a multi-stage or stacked structure, which is convenient for use, transmission, and on-site installation.

2. High installation reliability

The design concept adopted by the frequency converter, high-quality IGBT and drive circuit make the output waveform distortion small, the frequency output stability good, and it has good IGBT, overcurrent, overvoltage (protection values can be manually adjusted according to needs) and discharge protection functions, which can protect the safety of equipment and personnel; When the test sample discharges or breaks down, due to the destruction of resonance conditions, the short-circuit current is small, only 1/Q of the test current of the test sample, avoiding damage to the test sample caused by breakdown.

The equivalence of the three experiments is good

Using AC voltage close to the power frequency (30HZ-300HZ) as the test power supply, it is very close to the 50HZ/60HA power supply in terms of equivalence and *, ensuring the reliability and authenticity of the test results.