What Are 6kV / 10kV / 11kV Dry Type Transformers?

6kV / 10kV / 11kV dry type transformers are medium-voltage, three-phase cast resin transformers designed to safely step down voltages from 6–11kV to low-voltage levels such as 400V, 415V, or 433V. These transformers use epoxy resin to encapsulate windings, eliminating the need for oil and offering flame-retardant, self-extinguishing performance ideal for indoor or fire-sensitive environments.

They are widely used in industrial plants, commercial buildings, schools, hospitals, and residential substations where safety, low maintenance, and environmental protection are critical.

Why Use 6kV / 10kV / 11kV Dry Type Transformers?

High Safety:
Cast resin dry type transformers are non-flammable and free of oil, making them ideal for indoor installations and areas with strict fire safety regulations. The fully enclosed structure minimizes the risk of arc faults and short circuits.

Low Maintenance:
These transformers require no oil checks, leak monitoring, or filtration systems. With high mechanical strength and thermal stability, they operate reliably for over 20 years with minimal servicing.

Energy Efficiency:
Using low-loss silicon steel cores and precision-wound copper or aluminum coils, these transformers meet or exceed IEC and DOE standards for energy performance.

Key Features of 6kV / 10kV / 11kV Dry Type Transformers

Encapsulated Construction:
Windings are fully embedded in epoxy resin for excellent protection against moisture, dust, and chemical contamination.

Cooling System:
Standard AN (Air Natural) cooling ensures safe, silent operation. Optional AF (Air Forced) systems are available for higher capacity models.

Protection and Monitoring:
Equipped with temperature sensors (PT100 or digital), overload relays, and optional fans for thermal management and load adjustment.

Low Noise Operation:
Typical noise level is below 55–60 dB, making these transformers suitable for quiet environments such as schools, hospitals, and offices.

Environmental Adaptability:
Resistant to humidity and pollution, suitable for indoor use with optional IP23–IP44 enclosures for light outdoor protection.

Applications of 6kV / 10kV / 11kV Dry Type Transformers

• Medium-voltage power distribution in industrial parks

• Commercial buildings, hospitals, schools, and public infrastructure

• Residential complexes and urban substations

• Renewable energy projects (as secondary transformers for solar/wind)

• Areas with strict fire or environmental safety requirements

Standards and Compliance

International Standards:
Conforms to IEC 60076-11, ANSI/IEEE C57.12.01, GB/T 10228, AS, and CSA standards.

Testing:
100% routine tests performed according to IEC/IEEE standards. Optional type and special tests available upon request.

Certifications:
CE, ISO9001, ISO14001, ISO45001, RoHS (available upon request)

Advantages of 6kV / 10kV / 11kV Dry Type Transformers

• Oil-free, fire-resistant construction

• Compact and easy to install indoors

• High mechanical and thermal reliability

• Quiet operation and low electromagnetic interference

• Long lifespan with virtually zero maintenance

Choose CHBEB

Choose CHBEB 6kV / 10kV / 11kV dry type transformers for a safe, efficient, and maintenance-free power solution. Backed by over 60 years of transformer manufacturing experience, CHBEB provides customized dry type transformers for industrial, commercial, and infrastructure applications across Asia, the Middle East, Africa, and beyond.

👉 Technical Specifications:
Please refer to the table below for detailed parameters of our 6kV / 10kV / 11kV Series Dry Type Transformers:

Rated capacity	Rated voltage&Off-load tapping			Vector GroupSymbol	NO-load loss	Load loss	Short circuit impedance	NO-load curren	Border size	Mounting Dimensions	Weight	Insulation Class
（kva.）				DYN11. yyno.	（W）	（120.℃（W）	(％)	(％)	L（length）、W（width）、H（hight）	（mm）	（KG）	F
30	6 6.3 10 10.5 11	±5％0.4 ±2x. 25％	DYN11. yyno.		170	710	4	1.8	580 * 45 * 650	300 * 380	300
50					240	1000	5	1.5	600 * 450 * 650	300 * 380	380
80					330	1380	4	12	880 * 500 * 800	450 * 450	470
100					360	1570	4	1	970 * 500 * 820	450 * 450	560
125.0					420	1850	4	1	970 * 500 * 860	450 * 450	650
160					480	2130	4	1	980 * 650 * 950	550 * 550.	780
200					550	2530	4	0.8	1000a650 * 970.	550 * 550	800
250					640	2760	4	0.8	1040 * 760 * 1110	660 * 660.	1030
315					790	3470	4	0.7	1100 * 760 * 1110	660 * 600.	1250
400					880	3990	4	0.7	1170 * 760 * 1235	660 * 820	1400
500					1040	4880	4	0.6	1190 * 760 * 1250	660 * 820.	1600
630					1200	5880	4	0.6	1220 * 760 *1250	660 * 820	1900
630					1170	5960	6	0.6	1220 * 760 * 250	660-820.	1900
800					1360	6960	6	0.5	1330 * 760 * 1330	660 * 820.	2580
1000					1590	8130	6	0.5	1350 * 920 * 1450	820 * 820.	2850
1250					1880	9690	6	05	1440 * 920 * 1550	820 * 820.	3200
1600					2200	11730	6	0.5	1510 * 1170 * 1620	1070 * 1070	3800
2000					2740	14450	6	0.4	1530 * 1170 * 1785	1070 * 1070	4280
2500					3240	17170	6	0.4	1560 * 1170 * 1930	1070 * 1070	5250