Dry-type Transformer

20kV Three-phase Epoxy Resin Cast Dry-type Distribution Transformer

Brand: HENGFENGYOU
Series: SCB10-12
USES: Distribution transformer
Country of origin: China
Terms of payment: L/C, T/T, Western Union, Paypal, Money Gram
Certification: ISO9001、CB、CE、KEMA

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20 kv dry type transformer overview

Against the backdrop of increasing global electricity demand, 20kV dry-type transformers are widely used in rural power grids, industry, commerce, new energy, public facilities, and other fields. Conduct high reliability operational verification in over 50 countries and regions worldwide; Already sold to countries and regions such as Spain, Germany, France, Italy, Greece, Iceland, Finland, Iran, Romania, Bosnia and Herzegovina, Togo, etc

20kV Three-phase Epoxy Resin Cast Dry-type Distribution Transformer（SCB12 series ）

20kV Three-phase Epoxy Resin Cast Dry-type Distribution Transformer（SCB12 series ）

20 kv dry type transformer advantage

1. Standards: GB, IEC, GOST, EN, NF, ANSI/IEEE (customizable according to customer standards)

2. Certification: ISO、CE、IEC、SABS、COC、CSA、UL

3. Efficiency: The efficiency of an 20kV dry-type transformer can exceed 99%,

4. Maintenance free: IP23 protection level, F1 classSafer excellent fire performance, designed for a lifespan of over 25 years.

5. Overload capacity: With perfect temperature protection and control system, it can operate under 120% rated load under forced air cooling condition

20 kv dry type transformer parameters

- Input voltage: 20 kV
- Output voltage: 0.4kV 0.415kV
- Capacity: 50-5000 kva
- Remark: voltage, capacity, frequency, connection group and loss can be customized according to customer requirements

额定容量Capacity	额定电压及分接范围Rated voltage&Off-load tapping			联结组标号 Vector GroupSymbol	空载损耗 NO-load loss（W）	负载损耗 Load loss（W）	空载电流 NO-load current（%）	短路阻抗Short circuit impedance(%)
	高压 H.V(kv)	高压分接范围 High pressure Tap range（%）	低压 L.V(kv)


200	20	±2×2.5%	0.4	640		2930	1.8	6
400				1000		4820	1.4
630				1320		6800	1.2
800				1520		8220	1.2
1000				1790		9730	1
1250				2060		11480	1

20 kv dry type transformer Case show

20 kv dry type transformer Business Cooperation

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20 kv dry type transformer FAQ

1. What is a 20kV dry-type transformer?
A 20kV dry-type transformer is an electrical transformer that operates at 20 kilovolts (kV) and uses air or solid insulation (such as epoxy resin) instead of liquid coolant for cooling and insulation.

2. What are the advantages of a dry-type transformer over oil-filled transformers?
Dry-type transformers are fire-resistant, environmentally friendly (no oil leakage risk), require less maintenance, and are suitable for indoor installations due to their non-flammable insulation.

3. Where are 20kV dry-type transformers commonly used?
They are widely used in industrial plants, commercial buildings, hospitals, data centers, mining operations, and renewable energy systems where safety and space constraints are critical.

4. What cooling methods are used in dry-type transformers?
Common cooling methods include:
AN (Air Natural): Natural air convection.
AF (Air Forced): Fans for forced air cooling to increase capacity.

5. What are the standard efficiency ratings for 20kV dry-type transformers?
They typically comply with international standards like IEC 60076 or IEEE C57.12.01, with efficiency levels meeting or exceeding Energy Efficiency Class (e.g., IE3, IE4).

6. How do I maintain a dry-type transformer?
Maintenance includes:
- Regular inspection for dust accumulation.
- Checking terminal connections and cooling fans (if equipped).
- Monitoring temperature and insulation resistance.

7. Can dry-type transformers be installed outdoors?
Yes, but they require protective enclosures (IP54 or higher) to shield against moisture, dust, and extreme weather conditions.

8. What are the noise levels of a 20kV dry-type transformer?
Noise levels typically range between 50-70 dB, depending on the design and load. Quieter models are available with noise-reduction features.

9. What is the expected lifespan of a dry-type transformer?
With proper maintenance, dry-type transformers can last 25-30 years or more, depending on operating conditions and load cycles.

10. Are dry-type transformers customizable for specific applications?
Yes, manufacturers offer customization options such as:
- Special voltage ratings (e.g., 20kV to 6.6kV).
- Enhanced protection (e.g., surge arresters, temperature sensors).
- Enclosure materials (stainless steel, corrosion-resistant coatings).