Dry type transformer

Dry Type Transformer 20kV : SC (B) 10/11 epoxy cast dry-type transformer is a dry-type transformer with strong mechanical strength, electrical strength and good heat-resistance performance. It is made of F class epoxy resin mixture filter and after vacuum film degassing.

Features

• Strong anti-short-circuit ability, low loss, low no-load current, strong impact resistance capability, low partial discharge, low noise, good heat sinking capacity.

• Performance parameters are better than GB and IEC standards.,

• Safe, flame retardant, fireproof, non-polluting, it can be installed directly in the load site.

• Maintenance-free, easy to install, low operating costs.

• High reliability, high mechanical strength.

• Good seismic capability.

• Good anti-moisture & anti-corrosion features.

• Good overload capability, in the absence of air-cooling, it can withstand 120% of the load long-term service.

• Suitable to substations located in densely populated, narrow urban places.

 

Normal service conditions

Altitude: ≤1000m

Ambient air temperature

Maximum temperature: +40°C

Minimum temperature: -25°C (Outdoor dry type power transformer)

Minimum temperature: -5°C (Indoor dry type power transformer)

Highest average temperature of month: +30°C

Highest average temperature of year month: +20°C

Relative air humidity: ≤90%, There should not be water on the coil surface; Three-phase power supply voltage of three-phase transformer should be approximately symmetrical Power supply voltage wave should be similar to sine wave.