Dry type transformer 20KV
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.