Product overview of 10 kv level SC (B) type epoxy resin casting dry-type transformer, can be used as oil-immersed distribution transformer updated products, all kinds of dry type transformer is in a better product performance, especially suitable for urban power grid, high-rise buildings, business center, theaters, hospitals, hotel, subway, tunnels, underground power station, laboratory, station, wharf, airport, combined substation and other important places.
The SC (B) 10 is the first batch of low-noise, low-loss resin casting coil dry type transformer in China. Due to advanced design, high quality materials, scientific formulations, strict processes and high standards of testing, the products have the following characteristics:
Using copper or copper wire used in high pressure coil, low voltage winding copper foil winding, vacuum epoxy resin casting, forming a solid cylindrical overall after curing, high mechanical strength, partial discharge, high reliability.
Flame retardant, explosion-proof, pollution-free environment. The insulation materials such as fiberglass of winding coil have self-extinguishing characteristics, they will not be caused by short circuit, the resin will not produce poisonous and harmful gases.
The coil does not absorb moisture, the core clamp has a special protective coating, which can be carried out in 100% relative humidity and other harsh environment. Intermittent operation need not go to tide treatment.
High resistance to short circuit and lightning.
The inner surface of the coil is thin and the heat dissipation is good. The cooling method is generally used in air natural cooling (AN). Air cooling system (AF) can be configured for any transformer with protection grade to improve short-time overload capacity and ensure safe operation.
Low dissipation, good power saving, running economy and maintenance.
Small size, light weight, small footprint, low installation cost, no need to consider drainage pool, fire protection facilities and backup power supply.
Because there are no fire or explosion, it can be scattered and installed in the load center, which can be fully close to the power point, thus reducing the cost of the line and saving the expensive low-pressure facilities.
The shell material is made of stainless steel or aluminum alloy. The protection level reaches the IP20 and IP23. The outer shell of the IP20 can prevent the entry of solid foreign objects with diameters greater than 12mm and further safety protection for the transformer. IP23 shell more both prevent and vertical line within 60 ° Angle of water inflow, can be used in outdoor running.
Temperature control, temperature display
Temperature control system by the temperature controller and installed in the most hot products of low voltage winding the upper part of the PTC temperature measuring element, realize the temperature measurement and control of the transformer, if caused by overload operation or malfunction transformer winding temperature is exorbitant, alarm signal from temperature controller, temperature more than what is automatically tripping. The temperature controller is used to determine the input or switch of the cooling fan based on the temperature of the winding.
The temperature display system directly shows the hot temperature of the winding during the operation of the transformer, which can be used in conjunction with the temperature control system.
The temperature control and temperature display system can be installed at a certain distance from the main body of the transformer. The length of the lead of the temperature measuring element is:
Temperature control: < 20 m
Wm: < 10m (second wire)
<100 megabytes (secondary system with compensation wire)
The data in the table are subject to change without prior notice.
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