Dry type transformer is widely used in local lighting, high-rise buildings, airports, docks, CNC mechanical equipment and other places. In short, dry type transformer refers to the transformer whose core and winding are not immersed in insulating oil.
Due to the advantages of strong short circuit resistance, small maintenance workload, high operation efficiency, small volume and low noise, dry-type transformer is often used in places with high performance requirements such as fire prevention and explosion protection.
1. It is safe, fireproof and pollution-free, and can run directly in the load center;
2. It adopts domestic advanced technology with high mechanical strength, strong short circuit resistance, small partial discharge, good thermal stability, high reliability and long service life;
3. Low loss, low noise, obvious energy saving effect, maintenance free;
4. Good heat dissipation performance and strong overload capacity, which can improve capacity operation when forced air cooling;
5. Good moisture-proof performance, suitable for operation in high humidity and other harsh environment;
6. Dry type transformer can be equipped with perfect temperature detection and protection system. It adopts intelligent signal temperature control system, which can automatically detect and display the working temperature of three-phase winding, automatically start and stop the fan, and has alarm, trip and other functions;
7. Small size, light weight, less space and low installation cost.
The iron core is made of high quality cold-rolled grain oriented silicon steel sheet, and the iron core silicon steel sheet is made of 45 degree full inclined seam to make the magnetic flux pass along the seam direction of the silicon steel sheet.
Technical parameters:
1. Use frequency: 50 / 60Hz;
2. No load current: < 4%;
3. Withstand voltage: 20000V / min, no breakdown; test instrument: yz1802 withstand voltage tester (20mA);
4. Insulation grade: F (special grade can be customized);
5. Insulation resistance: ≥ 2m ohm test instrument: zc25b-4 megohmmeter < 1000V);
6. Connection mode: Y / y, △ / Y0, yo / △, self coupling (optional);
7. Allowable temperature rise of coil: i00k;
8. Heat dissipation mode: natural air cooling or temperature control automatic heat dissipation;
9. Noise coefficient: ≤ 30dB.
Service