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Capacity 50KVA to 2500KVA 20kV SC10 SCB10 Series Epoxy Cast Resin Dry-type Power Transformer Distribution Transformer

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Product Overview

We adopt the advanced technology imported from Europe, patented technology,specialised software to optimize the design for cast resin dry type transformer. The core is made of cold-rolled grain-oriented silicon steel sheet which cut in step-lap by GEORG Germany TBA core cutting lines and laminated by the method of fifth-order step-by-step stacking technology, enabling the no-load performance of the core to improve greatly. The epoxy resin from American HUNTSMAN is adopted for the windings which casted in the vacuum resin casting machine imported from HEDRICH, Germany. The winding material ensures good permeability, no bubbles occur, which leads to minimum partial discharge. The HV and LV winding mate with each other tightly, which ensures solid strength of structure and capability to withstand short circuit and vibration. Under normal service condition, the service life of dry type transformer is 30 years. No crack will form on the surface of transformer winding due to temperature variation as long as the transformer runs under normal service condition.

Product Features
  • Low-noise&Low-loss
    1. Transformer noise comes from the core. The core is made of high quality cold-rolled grain- oriented silicon steel sheet. The lamination sheets are produced by automatic step-lap core lamination line from GEORG, Germany. Such method improves the distribution of magnetic circuit and result in lowering the noise level.
    2. The transformer adopts the high quality silicon steel sheet whose low magnetic density stays away from its saturation point and decreases the harmonic in the core, and lowers the noise and no-load loss of the transformer.
    3. All parts used for clamping apply silicon rubber and flexible elements as buffers in order to reduce the amplitude and noise of components, while the surface of core is solidifying treated, which plays a role of sound-proof.
  • Non-flammable, no pollution to environment
    1. Solid electrical insulation composed of high quality resin could provide with high electrical strength (breakdown voltage≥34kV/mm)and partial discharge can be controlled in the range of ≤5pC.

2. As the composite materials resin used in dry-type transformer generate very little heat when in combustion (about 65mJ/kg). The transformer has the feature of fire-retardant and               self-extinguishing, so no arc will occur because of short circuit, and no toxic or harmful smoke or dusts will be produced at high temperature.

3. The coil is free of moisture and core is soliditying treated.
The transformer can be in continuous reliable operation in circumstance of 100% relative humidity, and no need to interrupt its service to eliminate moisture.

4. Dry type transformer also has great advantages such as strong overload capability, good thermal stability, compact size, light weight, easy installation, maintenance-free and so on.              Dry type transformer covers wide fields of high-rise buildings, commercial centers, airports, stations, ports, subway, factories and underground power distribution stations.

Technical Parameters
Rated Frequency 50HZ
Rated Voltage Hight Voltage(H.V)6kV、6.3kV、10kV、10.5kV、11kV、20kV、35kV Low Voltage(L.V)0.4kV
Top Range ±2×2.5%、 ±5%
Vector Group Dyn1、Yyn0
Insulation Level 6/0.4kV LI60AC25/AC3kV                                        10/0.4kV LI75AC35/AC3KV
20/0.4kV LI125AC50/AC3kV                                    35/0.4kV LI170AC70/AC3kV

 

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