JDZJ-3, JDZJ-6, JDZJ-10(W) Voltage Transformers Overview

The JDZJ Single-Phase Cast Epoxy Resin Voltage Transformers, designed for precise voltage and electric energy measurement as well as relay protection in AC 50Hz power systems. These transformers are ideal for use in applications requiring reliable and accurate voltage monitoring and energy metering. The JDZJ series is available in three models: JDZJ-3(W), JDZJ-6(W), and JDZJ-10(W), offering compatibility with 3kV, 6kV, and 10kV rated voltage levels, respectively.

Key Features:

• Single-phase design for specific applications.
• Double-winding configuration for enhanced accuracy.
• Epoxy resin cast insulation for superior durability and environmental protection.
• Available in JDZJ-3(W), JDZJ-6(W), and JDZJ-10(W) models, providing voltage compatibility for a wide range of electrical systems.

JDZJ-3, JDZJ-6, JDZJ-10(W) voltage transformers are engineered to deliver high precision and exceptional durability, ensuring long-term performance in various power distribution and control systems. With their robust epoxy resin insulation, they provide superior protection against environmental stressors, making them suitable for both indoor and industrial applications. This technical design and advanced insulation technology ensure JDZJ voltage transformers are reliable solutions for energy metering, voltage control, and relay protection in modern electrical infrastructures.

JDZJ-3.6.10(W)  Voltage Transformers Type designation

The Key Features and Structure of JDZJ Voltage Transformer:

• J: Represents “Voltage Transformer.”
• D: Denotes a “Single-phase” configuration.
• Z: Indicates “Cast Insulated” construction for superior durability and insulation.
• J: Signifies “Earthing Protection” for safety and enhanced operational reliability.
• 3, 6, 10 kV: Refers to the available voltage grades (3kV, 6kV, 10kV) for different power system applications.
• W: Represents the “Pollution Withstand” capability, ensuring reliable performance in moderately polluted environments.

This model designation clearly explains the JDZJ Voltage Transformer, highlighting its cast-insulated structure, single-phase configuration, earthing protection, and pollution withstand feature. It is ideal for electric energy metering, voltage measurement, and relay protection in a variety of power systems with different voltage ratings (3kV, 6kV, 10kV).

Service Conditions for Single-Phase Cast Epoxy Resin Voltage Transformers

1. Altitude: Not exceeding 1000 meters above sea level.
2. Ambient Temperature: -5°C to +40°C.
3. Relative Humidity: Less than 85% at 20°C.
4. Vibration Test: The product has successfully passed vibration tests with an intensity of 0.4g, equivalent to a nine-degree earthquake on the Richter scale.
5. Pollution Resistance: Suitable for use in environments with moderate pollution levels.

These service conditions ensure that the JDZJ-6 and JDZJ-10(W) Voltage Transformers perform reliably in a range of environmental and mechanical stress scenarios, maintaining stable operation in indoor installations.

Wiring diagram of three phase line

Construction Details of JDZJ-6, JDZJ-3(W)  Voltage Transformers

The JDZJ-6 and JDZJ-3(W) voltage transformers feature an epoxy resin cast insulation structure with a piled ring core. Both the primary and secondary windings are concentrically wound on the same core. The entire coil is encapsulated in epoxy resin for enhanced insulation. The secondary leads are routed through two embedded nuts on the cast base, labeled as a.x, while the primary leads are routed through two high-voltage terminals on the cast body, labeled as A.X.

Technical Parameters of JDZJ-3, JDZJ-6(W)  Voltage Transformers

The JDZJ-3 and JDZJ-6(W) Voltage Transformers are advanced devices designed for 3kV and 6kV medium-voltage power systems. Engineered for precise voltage measurement and reliable protection, these transformers support accurate energy metering and relay protection, offering high performance in a range of power applications. With secondary outputs that support accuracy classes 0.5, 1, and 3, they ensure dependable operation. The transformers feature epoxy resin cast insulation and a piled ring core design, providing enhanced durability and environmental resistance. The JDZJ series offers a maximum output power of up to 500 VA and is available with insulation levels of 3.5/23/40kV for JDZJ-3 and 6.9/32/60kV for JDZJ-6(W), making them ideal for demanding environments and high-voltage applications.

Parameter	JDZJ-3(W)	JDZJ-6(W)	JDZJ-10(W)
Rated Voltage Ratio	3000/√3/100/√3/100/3	6000/√3/100/√3/100/3	10000/√3/100/√3/100/3
Frequency (Hz)	50	50	50
Rated Secondary Output (VA) Accuracy class 0.5 Accuracy class 1 Accuracy class 3	30 50 80	50 80 200	80 150 300
Max Output (VA)	200	400	500
Rated Insulation Level	3.5/23/40	6.9/32/60	12/42/75

Customization: We offer customizable voltage ratios, secondary outputs, and insulation levels to meet your specific needs and environment. Our team can design solutions tailored to optimize performance and reliability for your power system requirements.

Outline and Dimensions of Installation

JDZJ-3.6.10(W)  Outline and Dimensions of Installation

 JDZJ-3, JDZJ-6(W) Voltage Transformers Customization

Note: This page provides comprehensive details about the JDZJ-3 and JDZJ-6(W) Voltage Transformers, including technical specifications, accuracy, and installation guidelines. When placing an order or requesting a customized solution, please provide the following information:

• Type and Voltage Ratio: Specify the type and voltage ratio required to meet your power transmission and transformation needs.
• Accuracy Class and Secondary Output: Indicate the desired accuracy class (0.5, 1, or 3) and corresponding secondary output based on your application requirements.
• Insulation Class and Service Conditions: Clearly state the insulation class and the specific environmental conditions (e.g., temperature, humidity, pollution level) to ensure reliable and safe operation.

For assistance with model selection or to explore tailored solutions, please contact our expert team for support.

FAQs for JDZJ-10(W) Voltage Transformers

1. What is the voltage rating for the JDZJ Series?
   The JDZJ Series voltage transformers are available for 3kV, 6kV, and 10kV systems, providing flexibility for various medium-voltage applications.
2. What are the key applications for the JDZJ-3, JDZJ-6, and JDZJ-10(W) transformers?
   These transformers are used for energy metering, voltage monitoring, and relay protection in power systems, ensuring safe and reliable operation.
3. How does the epoxy resin insulation improve the transformer’s performance?
   Epoxy resin insulation provides superior resistance to environmental stressors such as moisture, pollution, and aging, ensuring long-term durability.
4. Can the JDZJ Series transformers be customized for specific needs?
   Yes, the JDZJ transformers offer customization options, including voltage ratios, secondary outputs, accuracy classes, and insulation levels tailored to meet specific operational requirements.
5. What maintenance is required for the JDZJ-3, JDZJ-6, and JDZJ-10(W) transformers?
   The transformers require minimal maintenance, primarily periodic inspections for cleanliness and oil level checks to ensure optimal performance.
6. What are the environmental conditions suitable for these transformers?
   These transformers operate in temperatures ranging from -5°C to +40°C, at altitudes up to 1000m, and in environments with a maximum relative humidity of 85%.

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