• 35KV-0.4KV Oil-Immersed Earthing Transformer – 3 Phase Zig-Zag Type
35KV-0.4KV Oil-Immersed Earthing Transformer – 3 Phase Zig-Zag Type
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Model
JDS-1MVA-35KV
Basic info
Brand ROCKWILL
Model NO. 35KV-0.4KV Oil-Immersed Earthing Transformer – 3 Phase Zig-Zag Type
Rated voltage 35kV
Rated frequency 50/60Hz
Series JDS
Product Detail

Product Overview

Rockwill’s 35kV oil-immersed earthing transformer is specially engineered to provide a reliable neutral grounding point in medium-voltage networks where direct grounding is not available. Designed with a zig-zag winding configuration, this 3-phase transformer ensures optimal zero-sequence impedance, effectively limiting ground fault currents and stabilizing transient overvoltages.

Its robust oil-immersed construction guarantees long-term insulation reliability and thermal performance in outdoor environments.

Key Features

  • Zig-Zag Winding: Enables controlled neutral grounding and effective zero-sequence current flow for protective device coordination.

  • High Insulation Performance: Complies with 35kV-class insulation levels and withstand voltage standards.

  • Efficient Core Design: Made of cold-rolled grain-oriented silicon steel to reduce core losses and no-load current.

  • Copper Windings: Oxygen-free copper ensures reduced winding losses and superior short-circuit resistance.

  • Fully Sealed Tank: Maintenance-free with anti-corrosion surface and integrated oil conservator (if required).

  • Standardized Manufacturing: Built in accordance with IEC 60076, IEEE, and customer-specific utility codes.

Typical Applications

  • Medium-voltage distribution systems (33/35kV class)

  • Renewable energy substations (solar, wind)

  • Isolated generator grounding systems

  • Utility and industrial MV feeders requiring neutral grounding

  • Protection system grounding via NGR (Neutral Grounding Resistor)

Technical Highlights

 

 

Know your supplier
ROCKWILL
Rockwill Electric Group Global Manufacturer of High voltage and medium-voltage power equipment and smart grid solutions. Headquartered in Wenzhou, China. Serving 100+ countries with quality, innovation, and trust. What We Offer: • HV-MV switchgear (VCB, SF₆ circuit breakers, RMU, GIS) • Distribution transformers and substations • Smart grid and monitoring systems • Solar, wind, EV charging, and energy storage solutions • EPC turnkey power projects Certified: ISO 9001 / ISO 14001 / ISO 45001
Main Categories
High voltage
Business Type
Design/Manufacture/Sales
Highest Annual Export (USD)
$150,000,000
Professional Experience
16 years
Workplace
108000m²m²
占位
占位
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