Payment & Shipping Terms:
|Core:||Silicon Steel Sheet||Cooling:||AN Or Customized|
|Capacity:||250KVA Or Customized||Rated H. V.:||20Kv Or Customized|
|Rated L. V.:||0.433kv Or Customized||Impedance:||4% Or Customized|
20kV - 250kVA Cast Resin Dry Type Transformer , Three Phases , Two Winding , Power Distribution
With excellent performers, it can overcome those harsh operation conditions: high altitude, high humidity, high temperature and large temperature difference.
In daily life, it is exactly suitable for the places like government offices and bureau residential area and other areas that strictly demand of special require for fire proof.
Rising the challenge of large load fluctuation or long time overload places, it can be widely used in some places, for instance, urban rail, metallurgical industries, power plants, shopping mall and so on.
It has effect of cooling capacity and high performance such as moisture proof and light shock resistance.
It meets the needs of environmental adaptability and lighting shocks, strong resistance to thermal shock, anti-cracking and recycling.
It adopts NOMEX insulation systems in the main insulation, inflaming retarding, explosion proof and so on.
Vacuum pressure impregnation curing process, high mechanical strength, withstand short-circuit, safe and reliable.
Cast Resin Dry Type Transformer, Low Noise, Low Loss and Low Partial Discharge.
|I Basic Information|
|1||Rated Voltage ratio||kV||20kV / 0.433 kV|
|1.02||Applicable Standards||IEC 60076|
|1.04||Country of Origin||China|
|II Electric Performance|
|2.06||Insullation Class||Class H|
|2.07||Temperature Rise (@40℃ ambient temperature)||K||125K|
|2.14||Load Loss (@120℃)||W||2920|
|2.15||Local Partial discharge||pC||<10PC|
|2.16||Impulse Withstand Voltage (HV/LV)||kV||75/0|
|2.17||Power Frequency Withstand Voltage
|2.18||Rated Duration of Short Circuit||s||2|
|III Materials & Accessories|
|3.01||Core Materials||Silicon Steel Sheet|
|3.02||Winding Materials||Copper conductor/foil|
|3.03||Insulation methods||HV vacuum cast / LV impregnant|
|3.04||Main Insulation Materials||Epoxy Resin|
|3.06||Sensor for Temperature Alarm and Trip||pcs||Yes, contact provided|
Transformers in an enclosure
Consumption of life time due to overload is higher when the transformer is in an enclosure.
When transformers are used indoors, a correction should be made to the rated hot-spot
temperature rise to account for the enclosure.
Outdoor ambient conditions
In many parts of the world, direct sunshine may increase the transformer temperature
drastically, which should be taken into account when loading beyond rated current is
considered.Wind may improve the cooling of the transformer, but its unpredictable nature makes it
impractical to take into account.