Test Transformer
Darui Electric recommends:
The high-voltage test transformer is produced based on the Ministry of Machinery and Electronics "Test Transformer" standard, with extensive improvements on the original similar products. The AC/DC high-voltage test transformer is a new type of product improved according to the national standard "JB∕T 9641-1999" based on the test transformer.This series of products features small size, light weight, compact structure, complete functions, strong universality, and convenient use. It is especially suitable for insulation strength tests under power frequency or DC high voltage for various high-voltage electrical equipment, electrical components, and insulating materials in power systems, industrial and mining enterprises, and scientific research departments. It is an essential important equipment in high-voltage testing.
Main Technical Parameters
Ambient temperature: -10～45℃
Rated test capacity: 0～8000KVA
Instability: ≤0.05%
Working humidity: ≤90%
Resonant voltage: 0～1000KV
Output waveform: sine wave
Altitude: ≤2000M
Frequency adjustment range: 0.1～300Hz
Waveform distortion rate: ≤0.5%
Power input: 220V±10%
Single phase output 0～220V ( ≤10KW)
System measurement accuracy: 0.5 level
Noise: ≤60dB 380V±10% three-phase, 50Hz output 0～40V
Frequency adjustment resolution: 0.01Hz
Reactor Q value: 30～200
Features
1. Large screen displays test data and test status, with real-time operation step prompts
2. Flexible setting of test voltage, frequency adjustment range, and pressurization time
3. Test results can calculate the capacitance of the tested object
4. Has computer communication interface for convenient communication and test data management
5. Composed of variable frequency power supply, excitation transformer, reactor, and capacitive voltage divider; small size, light weight, easy for on-site operation; features: complex structure, low reliability, numerous wiring, high cost;
6. High resolution, frequency resolution of 0.001HZ
7. High safety and reliability, system has overcurrent, overvoltage, and discharge protection functions, effectively protecting personal and equipment safety
8. Test results can be printed
9. Upgradeable operating software
Test Method
First adjust to the system resonance point at low voltage, then increase the test voltage amplitude to reach the specified voltage value on the test object. Maintain this voltage for the specified time, then reduce the voltage to zero, completing the entire test process.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
