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Home > Step Down Transformer > Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
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Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv
Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv

Large Capacity High Voltage Three Phase Step Down Compact Prefabricated Substation Oil Immersed Electric Power Distribution Transformer Hv 33kv 20kv 11kv 0.4kv

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Product Description

Basic Information
Model NO. S11-M-30/10 Core Core-type Transformer
Cooling Method Oil-immersed Type Winding Type Two-winding Transformer
Certification ISO9001-2000, ISO9001, CCC Usage Power/Distribution
Capacity 30~20,000kVA or Above Cooling System Nature Air + Oil Cooling
Package Size 1440.00cm * 1035.00cm * 1130.00cm Gross Weight 1274.000kg
Product Description

S11 series is advanced designed to upgrade performance. It features a compact structure requiring smaller installation space, reduced noise levels, and enhanced overloading capacity.

Comparing to S9 series, the S11 series decreased no-load loss by 30% and no-load current by 45-80%.

Distribution Transformer

Key Features

  • Low loss and small current in no-load condition with low noise.
  • No oil conservator, saving significant installation space.
  • New Oil Gauge design ensures high safety standards.
  • Corrugated oil tank provides excellent cooling performance and flexibility.
  • Cost-saving, long service life, and easy maintenance.
Transformer Details 1 Transformer Details 2 Transformer Details 3
Technical Specifications
Parameter Specification Parameter Specification
Standards IEC60076, GB 1094 Insulation Level LI75 AC35/AC5
Capacity Range 30~20,000kVA Frequency 50/60Hz
Voltage Class 10KV, 35KV Cooling ONAN, Mineral Oil
Tapping Range ±2x2.5% / ±5% Max. Heat Rise 65K
Product Details View
Our Advantages
  • Large Capacity Range (30KVA to 2500KVA+).
  • Efficient heat dissipation via corrugated tank.
  • Low operating sound level.
  • High energy efficiency standards.
  • Lower operating loss compared to dry type.
  • Longer service lifespan.
  • Recyclable core coil assembly.
  • Superior impulse/surge handling.
Core Advantage
Product Lines & Workshop

Production includes a wide variety of distribution transformers (30kVA to 2500kVA+) with voltage classes of 10KV/35KV. Available types include dry-type, oil-immersed, underground, rectifier, and combined transformers for wind and photovoltaic power.

Production Line Factory Workshop

Our facility spans over 10,000 square meters and operates under the ISO9001:2015 quality management system. We are recognized as a high-technology enterprise dedicated to power equipment R&D and production.

Frequently Asked Questions
Q1: What is the standard lead time for a distribution transformer? A: The standard production time is usually 15-30 days depending on the capacity and specific requirements of the order.
Q2: Can the voltage ratio be customized? A: Yes, we provide customized primary and secondary voltage configurations to meet the specific grid requirements of different regions.
Q3: What certifications do your transformers carry? A: Our products are certified by ISO9001, CCC, and comply with international standards such as IEC60076.
Q4: How do you ensure the safety of the transformer during transport? A: Each unit is securely packed in a reinforced wooden case and treated for moisture protection to ensure it arrives in perfect condition.
Q5: What is the typical lifespan of an oil-immersed transformer? A: With proper maintenance and operating conditions, our S11 series transformers are designed to have a service life of over 20-30 years.
Q6: Do you provide after-sales technical support? A: Yes, we offer comprehensive technical guidance for installation and maintenance to ensure optimal performance of the equipment.
FAQ Support

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