JDZ12-10, JDZ12-6, JDZ12-3 Voltage Transformers Overview

The JDZ12-3, JDZ12-6R, and JDZ12-10R voltage transformers feature a fully enclosed, vacuum-cast epoxy resin structure, making them ideal for use in power lines and equipment with a rated voltage of 10kV and a frequency of 50Hz or 60Hz. These transformers are equipped with built-in fuse protection, perfectly matched to their short-circuit withstand capacity, ensuring reliable operation and enhanced safety. With high secondary output capacity and easy installation, these transformers offer dual voltage outputs: 100V for precise voltage measurement and 220V for circuit breaker operation. They are widely applicable to American-style box transformers, various switchgear, and other power distribution systems, providing precision, reliability, and robust performance for demanding environments.

JDZ12-10R Voltage Transformers Type designation

The Key Features and Structure of JDZ12-10R Voltage Transformer

• J: Voltage Transformer for precise measurement and protection.
• D: Single-phase configuration for compact operation.
• Z: Built-in fuse for enhanced safety.
• 12-10: Supports 10kV voltage grade, 10KV, 6KV, 3KV.
• R: Includes residual voltage winding for added functionality.

The JDZ12-10R Voltage Transformer ensures accurate measurement, reliable protection, and compatibility with 10kV power systems.

Service Conditions for JDZ12-10R, JDZ12-6, JDZ12-3 PT

• Ambient Temperature: Operates between -5°C and +40°C, with a daily average temperature not exceeding 35°C.
• Altitude: Suitable for installations up to 2000 meters. For higher altitudes, please provide specific elevation details.
• Relative Humidity: Daily average relative humidity should not exceed 95%, and monthly average should not exceed 90%.

These robust design features ensure reliable performance in diverse environmental and mechanical conditions.

Construction Details of JDZ12-10R, JDZ12-6, JDZ12-3

• Primary Terminal Compatibility

  : Designed for use with 200A large-diameter elbow connectors, ensuring secure, convenient, and quick primary connections while providing a sealed high-voltage terminal.

• Built-in Fuse Protection

  : Equipped with dedicated fuses at the primary terminals, eliminating the need for additional space for external fuses and simplifying installation.

• Sealed Secondary Outlets

  : The secondary outlet is sealed with a cover and secured with lead-sealable screws, making it suitable for outdoor box transformers. This design prevents electrical accidents and deters electricity theft.

Technical Parameters of JDZ12-10R, JDZ12-6, JDZ12-3

• Power Factor: COSΦ = 0.8 (lagging).
• Rated Insulation Level: 12/42/75 kV.
• Insulation Class: Class E, with a temperature rise limit of 75K.
• Rated Voltage Factor: 1.2 times continuous operation.
• Key Technical Parameters: Refer to the table below for detailed specifications.

Type	Rated Voltage Ratio (V)	Accuracy Class and Corresponding Rated Output (VA)				Limit Output (VA)	Rated Insulation Level (kV)
		0.2	0.5	1	6P
JDZ12-10R	10000/100/220	15	30	60	50	500	12/42/75
JDZ12-6R	6000/100/220						7.2/32/60
JDZ12-3R	3000/100/220						3.6/25/40

Customization and Support for JDZ12 Series Voltage Transformers

We provide flexible customization options for the JDZ12 Series Voltage Transformers, including tailored voltage ratios and more. These options are designed to meet specific operational requirements and environmental conditions.

Outline and Dimensions of Installation

JDZ12-10, 6, 3R voltage transformers (PT) Outline and Dimensions of Installation

Principle diaram for JDZ12-10R

Note: This page provides detailed information about the JDZ12 Series Voltage Transformers, including technical specifications, accuracy classes, and insulation levels. To ensure the best transformer for your needs, please provide the following details when placing an order or requesting a customized solution:

1. Type and Voltage Ratio: Specify the model (JDZ12-3R, JDZ12-6R, or JDZ12-10R) and the required voltage ratio.
2. Accuracy Class and Output: Indicate the desired accuracy class (e.g., 0.2, 0.5) and corresponding rated output.
3. Insulation Level and Conditions: Provide the required insulation level (e.g., 12/42/75 kV) and describe environmental conditions (e.g., temperature, humidity).

For tailored solutions or model selection support, contact our expert team today.

FAQs for JDZ12 Voltage Transformers

1. What are the primary applications of the JDZ12 Voltage Transformer?
   The JDZ12 is primarily used for energy metering, voltage monitoring, and relay protection in power systems, particularly in systems with 10kV and below rated voltages.
2. What are the benefits of the built-in fuse protection in the JDZ12 Voltage Transformer?
   The built-in fuse provides enhanced safety by preventing short-circuits and overvoltage situations, eliminating the need for additional external fuses and making installation simpler and more secure.
3. Can the JDZ12 Voltage Transformer operate in high-humidity environments?
   Yes, the JDZ12 is suitable for environments with a maximum relative humidity of 90% at 20°C, ensuring reliable performance in moderate humidity conditions.
4. What customization options are available for the JDZ12 Voltage Transformer?
   Customization options include tailored voltage ratios, accuracy classes, insulation levels, and secondary output configurations to meet specific operational and environmental requirements.
5. What maintenance is required for the JDZ12 Voltage Transformer?
   The JDZ12 transformer requires minimal maintenance, mainly consisting of periodic cleaning of surface contaminants, ensuring long-term operational efficiency with low maintenance costs.
6. What are the service conditions for the JDZ12 Voltage Transformer?
   The JDZ12 operates in ambient temperatures ranging from -5°C to +40°C and is designed for use at altitudes of up to 2000 meters, making it suitable for a wide range of environmental conditions.

• Fault Handling Considerations for Current and Voltage Transformers
• 3 Voltage Transformer Faults and Solutions: Ensuring Accurate Measurement and Protection
• Error Analysis and Maintenance of Current Transformers in Power Systems
• Working Principle of Zero-Sequence Current Transformers
• Common Fault Handling for Current and Voltage Transformers
• A Discussion on the Saturation Point of Current Transformers: Transformer Protection and Current Protection