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JDZJ-3, 6, and 10 Type Voltage Transformers - High-Quality China Suppliers & Factory for Reliable Power Systems

Voltage transformers are essential components within power systems, enhancing safety, reliability, and cost-effectiveness. Our JDZJ series voltage transformers, including models JDZJ-3, JDZJ-6, and JDZJ-10, are designed for AC power systems with a rated frequency of 50Hz or 60Hz and voltage ratings ranging from 3 to 10 kV. These voltage transformers are ideal for electric energy metering, voltage monitoring, and relay protection. Manufactured in China, our products meet the stringent execution standards of GB20840.1-2010 and GB20840.2-201As leading suppliers and factory producers, we guarantee high-quality solutions for your power system needs

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Outline and Installation Dimension Drawing

Model and Its Meaning

Summarize

Voltage transformers (VTs) have many advantages in power systems, including the following:

🛡️
SafetyReduces high voltages to safe levels, facilitating measurement and monitoring, and protecting equipment and personnel.
🎯
Precise MeasurementProvides high-precision voltage measurement, ensuring accuracy of power system monitoring and control.
🔌
Isolation FunctionProvides electrical isolation between high-voltage and low-voltage sides, preventing damage to measurement equipment and control systems.
⚙️
Strong AdaptabilityApplicable to various power systems, including AC and DC systems, meeting the needs of different occasions.
📈
Improved System StabilityBy monitoring and controlling voltage, helps improve the stability and reliability of power systems.
🖥️
Easy to Automate & Monitor RemotelyCan be integrated with automation and monitoring systems to facilitate remote monitoring and data collection.
💰
Reduced CostsReduces the need for high-voltage measurement equipment, thereby lowering overall system costs.
🔧
MultifunctionalitySome models integrate additional functions such as frequency measurement and phase measurement, providing more monitoring information.

Normal Service Condition

🏠 Installation Site: Indoor.

🌡️ Ambient Temperature: Maximum air temperature 40℃; The minimum temperature is -5℃. The daily average temperature does not exceed 30℃.

🌫️ Atmospheric Conditions: There is no severe pollution in the atmosphere.

Technical Parameter

Product Model	Rated Voltage Ratio（KV）	Accuracy Level	Rated Output (VA)	Extreme Output (VA)	Rated Insulation Level (KV)
JDZJ-3	3/√3/0.1√3/0.1/3	0.2	15	300	3.6/25/40
		0.5	30
JDZJ-6	6√3/0.1√3/0.1/3	0.2	20	400	7.2/32/60
		0.5	50
JDZJ-10	10√3/0.1√3/0.1/3	0.2	25	500	12/42/75
		0.5	50

Structure and Characteristics

This series of voltage transformers are semi-enclosed epoxy cast type. The core is made of high-quality silicon steel sheets stacked together, and there are cylindrical concentric primary and secondary coils in the cast body. There is a grounding bolt and four installation holes for installation on the bottom clamp of the product.

Frequently Asked Questions (FAQ)

Q What is the difference between JDZJ-3, JDZJ-6, and JDZJ-10 voltage transformers?

The main difference lies in their rated voltage ratios and insulation levels. JDZJ-3 is designed for 3KV systems, JDZJ-6 for 6KV systems, and JDZJ-10 for 10KV systems. Their rated outputs and extreme outputs also differ accordingly, making each model suitable for its respective voltage class.

Q What accuracy levels are available for the JDZJ series voltage transformers?

The JDZJ series voltage transformers are available in two accuracy levels: 0.2 and 0.5. The 0.2 accuracy level is suitable for precision measurement applications, while the 0.5 level is appropriate for general metering and monitoring purposes.

Q What type of installation environment is required for the JDZJ series?

The JDZJ series voltage transformers are designed for indoor installation only. The ambient temperature must be between -5℃ and 40℃, with a daily average temperature not exceeding 30℃. Additionally, the atmosphere at the installation site should be free from severe pollution.

Q What is the construction type of the JDZJ series voltage transformers?

The JDZJ series voltage transformers are of semi-enclosed epoxy cast type. The core is made from high-quality silicon steel sheets, and the primary and secondary coils are cylindrical and concentric within the cast body. The product includes a grounding bolt and four installation holes on the bottom clamp for secure mounting.

Q How do voltage transformers help reduce overall system costs?

By stepping down high voltages to safe, measurable levels, voltage transformers eliminate the need for expensive high-voltage measurement equipment. This reduces procurement and maintenance costs while allowing standard, lower-cost instrumentation to be used safely in the monitoring and control systems.

Q Can the JDZJ series voltage transformers be integrated with remote monitoring systems?

Yes. The JDZJ series voltage transformers are compatible with automation and remote monitoring systems. They can be used alongside SCADA and other data acquisition platforms to enable real-time remote monitoring, data collection, and system management, making them well-suited for modern smart grid applications.