Product Overview

The JDZX11-35R voltage transformer is an indoor epoxy resin cast single-phase measurement device designed for 35kV medium-voltage distribution systems. This advanced voltage transformer features epoxy resin cast insulation technology with integrated fuse protection, providing excellent dielectric strength and enhanced system safety for reliable performance in indoor environments.

The JDZX11-35R delivers precise voltage measurement for energy metering, voltage monitoring, and relay protection applications with multiple accuracy classes (0.2, 0.5, 1.0, 6P/3P) and flexible winding configurations (three-winding or four-winding). The built-in fuse (Φ40×437mm, 0.5/1A) provides reliable short-circuit protection for secondary circuits. The epoxy resin cast construction ensures superior insulation performance while providing 600VA thermal limit output capacity. Compact design with 65.2kg weight simplifies installation and reduces structural support requirements.

Product Display

JDZX11-35R Product Display
JDZX11-35R Product Display - Indoor Epoxy Cast-Resin Voltage Transformer
JDZX11-35R Product Display - Reliable Performance High Accuracy

Application Position

The JDZX11-35R is installed in indoor switchgear, substations, and distribution networks where reliable single-phase voltage measurement with fuse protection is required. The epoxy resin insulation provides excellent moisture resistance and UV protection for long-term indoor operation. Integrated fuse protection ensures enhanced system safety and equipment protection against short-circuit faults.

Main Applications

35kV indoor distribution networks
Substations requiring voltage measurement with fuse protection
Industrial facilities with medium-voltage supply
Energy metering applications
Voltage monitoring and relay protection
Indoor power distribution systems

Application Case Studies

Application Scenario 1: Substation Voltage Measurement with Protection
Utilities deploy the JDZX11-35R epoxy resin voltage transformer in 35kV indoor substations for energy metering and relay protection. The built-in fuse provides reliable short-circuit protection for secondary circuits, while the epoxy resin insulation ensures reliable performance in indoor environments with 40.5/95/200kV insulation level and maintenance-free operation.

Application Scenario 2: Industrial Medium-Voltage Metering
Industrial facilities with 35kV incoming supply require accurate voltage measurement for energy management and protection coordination. The JDZX11-35R offers multiple accuracy classes (0.2, 0.5, 1.0) to meet different measurement requirements, with flexible winding configurations (three-winding or four-winding) providing enhanced system flexibility and 600VA thermal limit output capacity for various burden conditions.

Application Fit

Suitable For

Indoor 35kV voltage measurement
Substations requiring fuse protection
Industrial facilities with medium-voltage supply
Voltage monitoring applications
Relay protection systems
Environments requiring maintenance-free operation

Not Recommended For

Outdoor installation applications (use outdoor-rated models)
Current measurement applications (use CT instead)
High-voltage systems above 40.5kV (use higher voltage class models)
Applications requiring three-phase measurement in single unit

Installation Conditions

Installation position: Indoor switchgear, substations, or distribution points
Ambient temperature: -5°C to +50°C
Altitude: ≤ 1000m (standard), higher altitude available on request
Insulation: Epoxy resin cast
Frequency: 50Hz or 60Hz
Connection: Single-phase with built-in fuse
Maintenance: Minimal maintenance required (epoxy resin design)

Technical Parameters

The JDZX11-35R is an indoor epoxy resin cast single-phase voltage transformer with fuse for 35kV systems. Operating temperature -5°C to +50°C, compliant with GB20840.3-2013 and IEC61869-3:2011 standards.

VT Data – Three-Winding

Rated Voltage (kV)	Accuracy Class & Rated Output (VA)	Thermal Limit Output (VA)	Insulation Level (kV)
35/√3 : 0.1/√3 : 0.1/3	0.2/6P(3P): 45/100 0.5/6P(3P): 100/100 1.0/6P(3P): 200/100	600	40.5/95/200

VT Data – Four-Winding

Rated Voltage (kV)	Accuracy Class & Rated Output (VA)	Thermal Limit Output (VA)	Insulation Level (kV)
35/√3 : 0.1/√3 : 0.1/√3 : 0.1/3	0.2/0.2/6P(3P): 20/20/100 0.2/0.5/6P(3P): 20/30/100 0.5/0.5/6P(3P): 40/40/100	600	40.5/95/200

Installation

Dimension Reference

JDZX11-35R Installation Diagram

View	Key Dimensions	Application Note
Side View	550±2 x 462±2 x 100 x 78 x 63.5mm; Base 223 x 167mm	Long horizontal profile with cylindrical bushing
Front View	Height 308 x 305±2mm; Base 250 x 260mm	Vertical block with built-in fuse tube Φ40×437mm
Top View	445.5 x 338 x 220 x 300±1 x 390mm	Layout from above showing bushing and body

Weight: Approximately 65.2kg

Wiring Diagram

JDZX11-35R Wiring Diagram

Installation Guidelines

Install in indoor switchgear or substation with adequate ventilation
Connect primary terminals to voltage system
Connect secondary terminals to meters and protection devices
Ensure proper grounding of secondary circuit
Verify voltage ratio matches system requirements before commissioning
Check insulation resistance before energizing
Verify fuse rating matches protection requirements

Fuse Protection Features

The JDZX11-35R incorporates advanced fuse protection technology including:

Built-in fuse tube (Φ40×437mm, 0.5/1A)
Reliable short-circuit protection for secondary circuits
Enhanced system safety and equipment protection
Easy fuse replacement and maintenance

Epoxy Resin Features

The JDZX11-35R incorporates advanced epoxy resin technology including:

Excellent moisture resistance for indoor operation
UV protection for long-term performance
Superior insulation performance with 40.5/95/200kV level
Maintenance-free construction eliminating periodic inspection

Standards

The JDZX11-35R epoxy resin voltage transformer complies with GB20840.3-2013 and IEC61869-3:2011 for voltage transformers, ensuring compatibility with Chinese and international standards for medium-voltage measurement applications.

Selection Guide

Select by system voltage: JDZX11-35R is designed for 35kV systems with 40.5/95/200kV insulation level.

Select by winding configuration: Choose three-winding for basic applications or four-winding for enhanced system flexibility.

Select by accuracy class: Use 0.2 for high-precision metering, 0.5 for standard metering, or 1.0 for general measurement.

Select by rated output: Choose rated output (45-200VA) based on connected burden requirements.

Ordering Information

When ordering the JDZX11-35R epoxy resin voltage transformer, please specify:

Model: JDZX11-35R
System voltage: 35kV
Winding configuration: Three-winding or four-winding
Accuracy class: 0.2, 0.5, 1.0, or 6P(3P)
Rated output: Specify VA value from table
Frequency: 50Hz or 60Hz
Installation type: Indoor
Fuse rating: 0.5A or 1A
Quantity

FAQs

The built-in fuse provides reliable short-circuit protection for secondary circuits, enhancing system safety and equipment protection. The fuse tube (Φ40×437mm, 0.5/1A) is easy to replace and maintain, ensuring continuous reliable operation.

Three-winding configuration has primary, secondary, and tertiary windings for basic metering and protection. Four-winding configuration has an additional secondary winding, providing enhanced system flexibility and redundancy for critical applications.

Multiple accuracy classes are available: 0.2 for high-precision metering, 0.5 for standard metering, 1.0 for general measurement, and 6P(3P) for protection applications. Select based on your measurement accuracy requirements and connected burden.

The epoxy resin design requires minimal maintenance. Periodic visual inspection for physical damage is recommended. The built-in fuse should be checked periodically and replaced if blown. No oil maintenance or periodic cleaning is required, reducing operational costs over the service life.

The JDZX11-35R complies with GB20840.3-2013 (Chinese standard) and IEC61869-3:2011 (international standard) for voltage transformers, ensuring compatibility with both domestic and international medium-voltage measurement applications.

Confirm model (JDZX11-35R), system voltage (35kV), winding configuration (three-winding or four-winding), accuracy class (0.2, 0.5, 1.0, or 6P(3P)), rated output, frequency (50Hz or 60Hz), installation type (indoor), fuse rating (0.5A or 1A), and quantity.

JDZX11-35R Indoor Epoxy Resin Voltage Transformer with Fuse