Product description:

To put it simply, the 20000KVA oil-immersed transformer refers to the transformer with iron core and winding resistance that is not pre-soaked in insulating oil, and the cooling method is divided into natural evaporative cooling (AN) and forced evaporative cooling (AF). When naturally air-cooled, the transformer can operate continuously for a long time at the rated capacity. When forced to air cool, the output volume of the transformer can be increased by 50%. It is suitable for intermittent overload operation or emergency overload operation; Because the load loss and impedance voltage increase greatly during overload, it is in a non-economic operating state, so it cannot be kept in long-term continuous overload operation.

The 20000KVA oil-immersed transformer is one of the important equipment in the power supply system of factories, mining enterprises and industrial buildings, which reduces the network voltage of 10 (6) kV or 35kV to the user’s 230/400V bus voltage. This type of product is suitable for AC 50 (60) Hz, three-phase Z maximum short-circuit capacity of 2500kVA (single-phase Z maximum short-circuit capacity 833kVA, single-phase transformer is generally not recommended)

How to use:

It is especially suitable for key sites such as urban power grids, multi-storey buildings, commercial centers, theaters, hospitals, hotels, tunnels, subways, underground power stations, stations, ports, airports, and combined distribution stations.

Benefits:

Low loss: The no-load loss of the commodity is reduced by more than 30% compared with the SCB10 product, and the load loss is reduced by more than 10% compared with the SCB11 product, with excellent energy-saving effect, economical operation and maintenance-free.

Low noise: The noise level of the product is more than 10-15 sound levels lower than the current professional standard JB/T10088-2016 “6-220KV transformer sound level”.

Low partial discharge: The resin mixture adopts overseas advanced mixing method and vacuum film degassing technology, so that the mixture is mixed evenly and the air bubbles in the mixture are completely eliminated. The product has only a very low partial discharge level, which can be controlled below 5PC. Both the high and low voltage coils are poured under vacuum and pressure, so that the resin insulation is not only fully encapsulated, but also has inter-turn leaching. The pouring body has a dense dry-solid structure, which is flame retardant, explosion-proof and does not damage the environment.

The glass fiber and other insulating materials of the coiled coil have the characteristics of self-extinguishing, which will not cause electrical isolation due to short circuit, and the resin will not cause toxic and harmful gases under high fever.

High impact toughness: the resin with filler makes the difference in the expansion coefficient in the pouring body small, the curing shrinkage is small, the thermal stress is small, and the dry solid hardness is large, and the prefabricated reinforcing material is placed in the epoxy resin wrapping layer of the inner and outer surface layers of the high and low pressure coils, which has a dense structure like the concrete structure, so the impact toughness also exceeds that of pure epoxy resin, and can withstand the effect of sudden short circuit electrodynamic force without damage.

Product Standards:

(GB)

Applicable Environment:

1.0-40 (°C), relative humidity <70%;

2. Altitude: no more than 2500 meters;

3. Protect from precipitation, moisture, high temperature, high fever or direct sunlight. The distance between the heat exhaust vent and the surrounding objects should not be less than 40cm;

4. Avoid working in places with more corrosive liquids, gases, floating dust, conductive fibers or metal fines;

5. Avoid working in the vibration or interference signal site;

6. Prevent long-term inverted storage and transportation, and can not be subjected to strong collisions.