1.1 Product overview

The SC (B) 10/11 series epoxy cast dry-type transformer is made of F-grade epoxy resin mixture with fillers. After vacuum film degassing, the inner and outer surfaces of the thin layer cast are placed on high and low voltage coils reinforced by glass fiber forming mesh under vacuum and pressure, presenting a mechanical strength, electrical strength, and heat resistance range

A high degree dry-type transformer. It is an excellent product for urban power grid renovation, especially suitable for important places such as urban power grids, high-rise buildings, business centers, theaters, hotels, tunnels, subways, underground power stations, laboratories, stations, docks, airports, and combination substations that require flame retardant, explosion-proof, and moisture-proof properties.

1.2 Product features

Strong short-circuit resistance, low loss, low no-load current, strong impact resistance, low partial discharge, low noise, and strong heat dissipation ability;

The performance parameters of our company’s products are superior to GB and IEC standards;

Safe, flame-retardant, fireproof, pollution-free, and can be directly installed in the load center;

Maintenance free, easy installation, and low comprehensive operating costs;

High reliability and mechanical strength. Strong seismic resistance;

Moisture-proof and corrosion-resistant;

Strong overload capacity, capable of long-term operation at 120% load without wind cooling;

Suitable for: densely populated and narrow urban substations.

1.3 Normal usage conditions

Altitude:

Not exceeding 1000m;

Environmental temperature:

Maximum temperature: 40 ℃ ;

Minimum temperature: -25 ℃ (for outdoor dry-type transformers);

Minimum temperature: -5 ℃ (indoor dry-type transformer);

Maximum monthly average temperature: 30 ℃ ;

Maximum annual average temperature: 20 ℃ ;

The relative humidity of the surrounding air should be less than 93%, and there should be no water droplets on the surface of the coil;

The waveform of the power supply voltage is approximately a sine wave

For three-phase transformers, the three-phase power supply voltage should be roughly symmetrical