Product Details
Company Profile

Oil Immersed Step Up Step Down Power Transformer For MV HV Substation

Product Specifications

Attribute	Value
Frequency	50Hz, 60Hz
Phase	Three
Coil Number	Single Winding, Two Windings, Multi Winding, Three Windings
Application	Power Distribution System Power Transformer
Coil Structure	Shell-Type Coil, layer coil, fully sealed construction, Disc Coil, round coil
Output Voltage	415V, 110V, 220V, 380V, 400V, 440V, 480V
Input Voltage	11kV, 10.5kV, 3kV, 6.3kV, 6.6kV, 12.47kV, 6kV, 10kV, 35kV
Type	Voltage Regulator Transformer, Oil-Immersed Transformer
Vector Group	Dyn11 / Yyn0
Product Name	S20 Energy Efficiency Secondary Oil-immersed Transformer
Customization	Accept
Corporation	KPLC/REA/PEC
Poles	3
Efficiency	98%
Capacity Range	< 31500kVA
Winding	Cu/copper
Connection Symbol	Dyn11,Yyn0 or others
Rated Voltage	11 kV
Warranty	1 Year
Impedance	4.75% or Customized

Technical Specifications

Rated capacity (KVA)	Vector Group	Voltage Combination	Tapping range	No-load loss	Load loss	Impedance
30	Yyn0 / Dyn11	10 6.3 6	±5% ±2X2.5%	70	505/480	4.0
50				90	730/695
63				100	870/830
80				115	1050/1000
100				135	1265/1200
125				150	1510/1440
160				180	1850/1760
200				215	2185/2080
250				260	2560/2440
315				305	3065/2920
400				370	3615/3440
500				430	4330/4120
630				510	4960/4960	4.5
800				630	6000/6000
1000				745	8240/8240
1250				870	9600/9600
1600				1050	11600/11600
2000				1225	14640/14640	5.0
2500				1440	14840/14840

S20 type energy-efficient secondary oil-immersed transformer

Why Choose Our Transformers?

Professional 30+ senior engineers offer 24 hours online service with response within 30 minutes
100,000m² factory with 250+ workers, 30+ senior engineers and 8 production lines, 20,000+ sets annual production capacity
100% OQC testing with 8 main detection contents
15+ years power transformer designing and manufacturing experience
Comply with GB 20052-2024/ANSI/IEEE/DOE2016/CSA/IEC60076 standards
Cross-industry power transformer solutions
Global on-site technical support

Frequently Asked Questions

Q: Who are we?

HENTG POWER is a professional designer, manufacturer and installer of power system solutions around the world. Founded in 2011, we occupy 100,000 square meters and specialize in reliable, high-performance solutions for global power systems.

Q: How can we guarantee quality?

We always provide a pre-production sample before mass production and conduct final inspection before shipment, including QC & test reports. We accept Factory Acceptance Test (FAT). Our factory can manufacture oil type and dry type distribution transformers, with maximum capacity of 500KV 480MVA power transformers, GIS, switchgear, and substations, based on ANSI/IEEE/DOE2016/CSA/IEC60076 standards. We provide guarantee service of over 2 years.

Q: Why choose us?

We have professional and independent drawing and technical teams. We can confirm all drawing contents with you within 7 days. Our technical team includes 30+ senior engineers offering 24-hour online service with response within 30 minutes.

Q: What services can we provide?

We accept OEM and all business payment terms are negotiable.

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