Dry-type distribution transformers composed of iron cores and coils have the advantages of strong short-circuit resistance, low maintenance costs, low noise, and high efficiency.

Dry distribution transformers do not have the disadvantage of oil leakage like oil-filled transformers. Distribution transformers are usually used in medium voltage distribution systems such as 11KV/33KV to 0.415KV, and are widely used in power stations, hospitals and factories.

The reliability of the winding material determines the safe operation and service life of the dry-type transformer, so winding temperature monitoring is very important to ensure the normal operation of the transformer.

 

 

Dry-type transformer Type	Cast resin
Manufacturing Standards	IEC, ANSI, GB
Rated Capacity	Up to 25MVA
Rated Voltage	Up to 36KV
Phases	Single or Three Phase
Tapping	With tapping links or on-load tap changer
Frequency	50Hz or 60Hz
Vector groups	Dy, Yy, Yd as standard. Other on request
Class insulation	According to IEC 60085, Class F or Class H
Type of cooling	AN (natural air), AF, AFWF on request
IP Rate	IP00 to IP54
Environment Class	E2
Environment Class	C2
Fireproof Class	F1

 

 

 

1. It is safe, fireproof, pollution-free, and can be operated directly in the load center;

2. High mechanical strength, strong short-circuit resistance, small partial discharge, good thermal stability, high reliability and long service life;

3. Low loss, low noise, obvious energy saving effect, maintenance-free;

4. Good heat dissipation performance;

5. Good moisture resistance;

6. Dry-type transformers can be equipped with a complete temperature detection and protection system. Using the intelligent signal temperature control system, it can automatically detect and display the respective operating temperatures of the three-phase windings, can automatically start and stop the fan, and have functions such as alarms and trips. IS485 communication interface can be installed to realize wireless detection and intelligent management;

7. Small size, light weight, small footprint, low installation cost.

 

 

 

 

● Low loss, low noise, low partial discharge, high reliability.

● Powerful anti-short circuit capacity, high anti-lightning impulse capacity.

● HV coil is Vacuum casted with epoxy resin with pressure, capabilities for better the cast without pressure.

● Simulating analys is being used in the core model, the resonance can be avoided and the noise is reduced.

● Simulation calculation and analysis of lightning impulse wave are applied to HV Coils; anti-lightning impulse capability is improved.

 

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