• 20kV Three Phase Oil-Immersed Earthing Transformer
20kV Three Phase Oil-Immersed Earthing Transformer
discuss personally
Model
JDS-100KVA-20KV
Basic info
Brand ROCKWILL
Model NO. 20kV Three Phase Oil-Immersed Earthing Transformer
Rated voltage 20kV
Rated capacity 100kVA
Phases Three-phase
Series JDS
Product Detail

Product Overview
Rockwill's JDS series oil-immersed earthing transformers provide reliable neutral grounding solutions for 20kV power systems. Designed with robust copper windings and advanced oil-cooling technology, these transformers ensure stable system operation while preventing damage from ground faults.

Basic Info

Key Specifications

  • Model: JDS-100/20

  • Capacity: 100kVA

  • Voltage: 20kV

  • Frequency: 50/60Hz

  • Winding: Copper two-winding design

  • Core: Ring-shaped silicon steel

  • Cooling: ONAN (Oil Natural Air Natural)

  • Impedance: Low zero-sequence impedance (<10&Omega;)

  • Certification: ISO 9001, CTQC tested

Technical Advantages

  1. Superior Grounding Performance

    • Specially designed winding configuration for optimal neutral point stability

    • Withstands 100A short-circuit current for 10 seconds

    • Low zero-sequence impedance ensures effective fault current diversion

  2. Advanced Oil-Cooled Design

    • Hermetically sealed corrugated tank prevents oil contamination

    • Mineral oil insulation with -30&deg;C to +40&deg;C operating range

    • Optional Midel 7131 ester fluid for enhanced fire safety

  3. Robust Construction

    • Heavy-gauge steel tank with anti-corrosion treatment

    • Precision-engineered core with reduced magnetic losses

    • Vibration-resistant mounting system

  4. Smart Protection Features

    • Standard Buchholz relay for internal fault detection

    • Pressure relief device for overload conditions

    • Oil level indicator with alarm contacts

Application Scenarios

  1. Industrial Power Systems

    • Ideal for manufacturing plants with sensitive equipment

    • Protects against ground faults in 20kV distribution networks

    • Suitable for harsh industrial environments

  2. Renewable Energy Installations

    • Wind farm collector substations

    • Solar park step-up stations

    • Biomass power generation facilities

  3. Infrastructure Projects

    • Metro power supply systems

    • Airport electrical networks

    • Hospital backup power systems

Why Choose Rockwill?

  • 20+ years of transformer manufacturing expertise

  • Custom engineering support available

  • Complete type test reports provided

  • Global service network with 24/7 technical support

  • Environmentally conscious production processes

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 Electrical Apparatus
Business Type
Design/Manufacture/Sales
Highest Annual Export (USD)
$150,000,000
Professional Experience
16 years
Workplace
108000m²m²
占位
占位
Related Products
Related Knowledges
How is the contradiction between the small grounding residual current and the neutral point displacement voltage exceeding the standard resolved?
How is the contradiction between the small grounding residual current and the neutral point displacement voltage exceeding the standard resolved?
Contradiction PointsIn automatic tracking arc suppression coils, the adjustment precision is high, the residual current is small, and the operation is close to the resonance point.In an automatic tracking arc suppression coil grounding system, two factors must be considered: Under normal operating conditions, the long-term voltage displacement of the neutral point should not exceed 15% of the system's nominal phase voltage; In the case of a ground fault, the grounding residual current should be
Edwiin
07/28/2025
Power Supply Design of the Group Testing Device for Special Transformers in Electrified Railways
Power Supply Design of the Group Testing Device for Special Transformers in Electrified Railways
1 Hardware Design of Tester Power SupplyThis device uses a standard small - signal generating device to generate small - current signals with the required frequency and phase angle. Then, through the amplifying circuit and phase - modulating circuit, the working power supply is generated.1.1 Power Frequency Sine Wave Small - Current Signal Generating DeviceThe sine wave generating circuit is mainly composed of the waveform generating chip MAX038 produced by MAXIM Corporation of the United States
Ron
07/28/2025
Analysis of Testing Methods for Turns Ratio and Connection Mode of Special Transformers
Analysis of Testing Methods for Turns Ratio and Connection Mode of Special Transformers
1 Error Analysis of Traditional Turn Ratio Testing MethodsThe QJ35 turn ratio bridge and other single-phase-phase-based testers all use the double-voltmeter principle. The QJ35, however, eliminates power supply fluctuation interference via bridge balance. For three-phase transformer ratio testing with a single power supply, corresponding terminals must be shorted and data converted, turning three-phase tests into independent single-phase measurements, with √3 Yd conversion based on connect
Felix Spark
07/28/2025
What are the production processes of special transformers?
What are the production processes of special transformers?
A certain special transformer manufacturing enterprise, which has been producing special transformers such as split - phase - shifting rectifier transformers, rectifier transformers for electrolysis, and transformers for submerged arc furnaces for more than 20 years. Now, an evaluation is made on the production process flow and its characteristics of the special transformers after the company's transformation.1.Production Process Flow Chart of Special TransformersThe production of special transf
Leon
07/28/2025
Cost Differences and Performance Comparison of 35kV New Energy Transformers Based on Dry-Type, Mineral Oil, and Vegetable Oil
Cost Differences and Performance Comparison of 35kV New Energy Transformers Based on Dry-Type, Mineral Oil, and Vegetable Oil
For users, when purchasing a 35kV new energy transformer, choosing between dry-type, mineral oil-filled, or vegetable oil-filled types involves multiple considerations. These include user habits, maintenance-free performance, safety and fire resistance, volume and weight, among others. However, cost differences are undoubtedly one of the most crucial factors.To illustrate the issue intuitively, this paper selects a three-level energy efficiency dual-winding new energy transformer with a rated ca
Ron
07/26/2025
What is the connection group of a transformer?
What is the connection group of a transformer?
Transformer Connection GroupThe connection group of a transformer refers to the phase difference between the primary and secondary voltages or currents. It is determined by the winding directions of the primary and secondary coils, the labeling of their start and end terminals, and the connection mode. Expressed in a clock-like format, there are 12 groups in total, numbered from 0 to 11.The DC method is commonly used to measure the transformer's connection group, mainly to verify whether the con
Vziman
07/26/2025
×
Inquiry
Download
IEE-Business is dedicated to serving the personnel in the global power industry.
Join IEE-Business, not only can you discover power equipment and power knowledge, but also canhnd like - minded friends!