Voltage Transformers, also known as potential transformers, are essential components in electrical systems for stepping down high voltage to a safe, measurable level suitable for metering, protection, and monitoring devices. As a leading China-based manufacturer, supplier, and factory, Jinhand specializes in designing and producing high-performance Voltage Transformers that comply with international standards such as GB/T 20840 and IEC 61869. Our products are widely used in power distribution, substations, renewable energy systems, industrial plants, and smart grid applications. With over a decade of industry expertise, Jinhand ensures Voltage Transformer delivers accuracy, durability, and safety—making us the preferred partner for global clients seeking reliable electrical solutions.
A Voltage Transformer is an instrument transformer that reduces high primary voltage (e.g., 6kV, 10kV, 35kV) to a standardized secondary voltage (typically 100V or 110V) for accurate measurement and protection. It operates on the principle of electromagnetic induction, providing electrical isolation between the high-voltage circuit and low-voltage instruments. Jinhand’s Voltage Transformers are designed with precision-wound coils, high-grade insulating materials, and robust enclosures to ensure stable performance under varying environmental and electrical conditions.
Jinhand stands out as a professional China manufacturer, supplier, and factoryof Voltage Transformers due to our commitment to quality, innovation, and customer satisfaction. Our products are certified to ISO, CE, GB/T, and IEC standards, ensuring global compliance. We utilize automated production lines, vacuum impregnation, and rigorous testing protocols to deliver transformers with excellent accuracy (up to 0.2 class), low losses, and long service life. Whether for indoor or outdoor installation, Jinhand Voltage Transformers offer reliable performance in temperatures ranging from -5℃ to +40℃ and support both 50Hz and 60Hz systems.
Choosing the appropriate Voltage Transformer involves considering several key factors:
Match the primary voltage (e.g., 6kV, 10kV, 35kV) to your system voltage. Jinhand offers a wide range of ratios, including standard and customized options.
Select based on application: 0.2, 0.5 class: For precision metering and billing. 3P, 6P class: For protection and relay circuits.
Ensure the transformer’s insulation (e.g., 12/42/75 kV, 40.5/95/200 kV) meets your system’s voltage withstand requirements.
Choose a transformer with sufficient VA output to drive connected instruments without saturation.
Consider installation location (indoor/outdoor), ambient temperature, humidity, and pollution level.
Verify that the transformer meets relevant international standards (IEC, ANSI, GB) for your region.
Our Voltage Transformers are engineered to deliver high accuracy, stability, and safety. Below is a summary of technical specifications for popular models:
| Model | Rated Voltage Ratio | Accuracy Class | Rated Output (VA) | Limit Output(VA) | Insulation Level(kV) | Frequency |
| JDZX10-10A | 10/ √3/0.1/ √3/0.1/3 | 0.2/6P | 15/50 | 150 | 12/42/75 | 50/60Hz |
| JDZ9-10 | 10/0.1 | 0.2 | 20 | 300 | 12/42/75 | 50/60Hz |
| JDZ18-10R | 10/0.1/0.22 | 0.2/3 | 20/300 | 300 | 12/42/75 | 50/60Hz |
| JSZV18-10R | 10/0.1/0.22 | 0.2/3 | 20/500 | 300 | 12/42/75 | 50/60Hz |
| JSZY12-10NFR | 10/ √3/0.1/ √3/0.221 | 0.5/3/3P | 30/300/50 | 300 | 12/42/75 | 50/60Hz |
| JDZ9-35 | 35/0.1 | 0.2 | 30 | 500 | 40.5/95/200 | 50/60Hz |
These parameters ensure that Jinhand Voltage Transformers meet diverse application needs—from metering and monitoring to protection and control.
Jinhand Voltage Transformers are versatile and widely used in:
For voltage measurement and protection in substations and switchgear.
In solar PV plants, wind farms, and energy storage systems.
For motor control centers, capacitor banks, and factory automation.
Supporting advanced metering infrastructure (AMI) and grid monitoring.
Ensuring safe and reliable traction power measurement.
For main electrical panel monitoring and energy management.
As a certified China manufacturer and factory, Jinhand implements a stringent quality management system:
(1)CNC winding for precise coil construction. (2)Vacuum pressure impregnation (VPI) for enhanced insulation. (3) Automated casting and curing for consistency.
Each Voltage Transformer undergoes: (1) Ratio and polarity verification. (2)Partial discharge test (<10 pC). (3)Power frequency withstand voltage test. (4)Temperature rise and accuracy calibration.
We use high-permeability silicon steel, high-temperature epoxy resin, and corrosion-resistant terminals to ensure durability and performance.
Our products hold CE, ISO, and national type test certificates, confirming compliance with GB/T 20840 and IEC 61869.
Proper installation ensures optimal performance and longevity:
Secure the transformer vertically or horizontally as per design, ensuring adequate ventilation.
Use appropriate cable sizes and torque settings for terminals.
Ensure reliable grounding of the transformer case and secondary circuit.
Perform insulation resistance and ratio tests before commissioning.
Jinhand Voltage Transformers are virtually maintenance-free due to sealed construction. Periodic visual inspection and cleaning are recommended in polluted environments.
We provide end-to-end services to ensure a seamless experience:
Technical selection support, application analysis, and solution design.
Tailored voltage ratios, accuracy classes, insulation levels, and mechanical designs.
Export-standard packaging, sea/air freight coordination, and real-time tracking.
Jinhand is at the forefront of innovation, integrating smart features into next-generation Voltage Transformers:
Supporting IEC 61850 communication for smart substations.
Reduced size and weight for space-constrained installations.
Higher insulation levels and fault-tolerant designs.
Lower losses and improved thermal management.
As a leading China manufacturer, supplier, and factory, Jinhand combines expertise, quality, and service to deliver exceptional Voltage Transformers. Our products are trusted by clients in over 30 countries for their reliability, accuracy, and durability. Whether you need standard models or customized solutions, Jinhand is your reliable partner for all electrical measurement challenges.
Jinhand is a professional China manufacturer and factoryspecializing in instrument transformers, including Voltage Transformers, Current Transformers, and combined units. With over 10 years of industry experience, we are committed to innovation, quality, and customer satisfaction. Our products are widely used in power generation, transmission, distribution, and industrial applications worldwide. Choose Jinhand for trustworthy electrical solutions that meet global standards.
