20kv Cast Resin Dry Type 1.25 Mva Transformer

Wenzhou XiFa Electrical Power Equipment Co., Ltd,is a factory with 20 years of experience in transformer manufacturing, supported by a technical team of over 10 professionals, three of whom have been in the industry for more than 30 years.the 20kv cast resin dry type 1.25 mva transformer are widely used in European countries such as France, Germany, and Italy due to their fire-resistant and environmentally friendly advantages.To address the weakness of poor heat dissipation in 20kv cast resin dry type 1.25 mva transformer,Wenzhou XiFa Electrical Power Equipment Co., Ltd. embeds temperature-sensing elements PT100 into the windings to monitor hot-spot temperatures in real time. When over temperature occurs, the transformer will trigger an alarm or even cut off the power supply as a form of active protection.

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Product Description

As a medium-capacity, high safety distribution transformer, 20kv cast resin dry type 1.25 mva transformer is widely applied in places like airport terminals, machine workshops, high-speed railway stations, and subway stations. For safe and economical operation, the long-term load of the 20kv cast resin dry type 1.25 mva transformer should be kept under 1000kW. because according to relevant standards of the 《Economic Operation of Power Transformers》, it is recommended that the long-term load rate of a transformer should not exceed 80%, in order to leave a margin for short-term load fluctuations.

the benefits of this approach are:

1.Effectively reducing the 20kv cast resin dry type 1.25 mva transformer’s temperature rise and insulation aging rate, extending its service life.

2.Retaining a 30% margin to comfortably handle the starting surges of equipment such as air conditioners and motors.Of course, high-power motors must be equipped with soft starters or variable frequency drives (VFDs) to prevent the 20kv cast resin dry type 1.25 mva transformer from tripping due to inrush current.

3.Keeping the transformer operating in its most efficient range, reducing electricity bill costs

In addition, the rated capacity of the 20kv cast resin dry type 1.25 mva transformer is based on a maximum ambient temperature of 40°C. Therefore, if it is installed in a poorly ventilated area, or somewhere the temperature exceeds 40°C, it must be derated; otherwise, it is will overheating and burn out. And, altitudes exceeding 1,000 meters also will affect heat dissipation and require derating.

To meet the acceptance standards of different national power authorities, Wenzhou XiFa Electrical Power Equipment Co., Ltd. carry out customized design and production of the 20kv cast resin dry type 1.25 mva transformer based on the specific loss requirements provided by different customers. We Guaranteed to offer the most cost-effective solution while achieving the energy efficiency requirements.

20kv Cast Resin Dry Type 1 25 Mva Transformer

Product Parameters:

Name	20kv cast resin dry type 1.25 mva transformer
Rated Capacity	1.25 mva 1250kva
Primary voltage	20KV
Secondary voltage	0.4 kV
Insulation material	Cast resin
Vector Group	Dyn11
No-load Loss (P0)	Based on customer’s need
Load Loss (Pk) @ 120°C	Based on customer’s need
Impedance Voltage (Uk)	4% or 6%
Insulation Class	CLASS F or H
Cooling method	ONAF ONAF
Power frequency withstand voltage	75KV
Lightning withstand voltage	125KV