Product Overview
Class 0.2 Precision Voltage Transformer from a Leading Chinese Manufacturer
A single-phase transformer known as the JDZ-10 is frequently employed in electrical engineering and power systems. It serves the purpose of changing voltages within 10kV in order to get suitable secondary standard levels for measurement, metering, and protection purposes. The transformer rating goes to 0.2 which ensures that metering and relaying processes will be precise as required.
Applications & circuit protection
The JDZ-10 is utilized in the cases when it is necessary to measure or protect 10,000-volts with the help of third-party devices, starting from switchboard devices and finishing with metering cabinets at substations.
- Measuring: Voltage input for kWh meters and energy management
- Protection: Providing voltage signals to protection relays
- Switchgear: Voltage detection at MV switchboards and cubicles
- Substations: Secondary reference voltage for devices
Construction & operating reliability
The JDZ-10 comprises superior quality magnetic materials combined with highly advanced winding technology to provide consistent ratio precision and minimal phase error throughout its operating range.
- Single-phase construction incorporating both primary and secondary windings.
- Accuracy class 0.2 for highly precise metering applications.
- A variety of capacity options are available: 20 / 50 / 100 VA.
- Use of a compact indoor casing with transparent terminals.
- Tested according to IEC 60044-2 / IEC 61869 standards.
Technical Parameter
| Parameter | Value |
| Primary voltage | 10 kV |
| Secondary voltage | 100 V or 100/√3 V |
| Rated capacity | 20 / 50 / 100 VA |
| Accuracy class | 0.2 / 0.5 / 1.0 |
| Type | Single-phase, indoor |
| Rated frequency | 50/60 Hz |
| Application | Metering, measurement and protection |
Transformer Price & Factory Quotation
As we manufacture transformers directly from the source, we determine their pricing depending on their rated capacity, voltage configuration, winding and core material, accessories, and amount to be ordered. Volume pricing is used in the case of container orders and factory distributors. Since the prices for raw materials fluctuate depending on market trends, we give written estimates based on current prices. Please inquire about a price list of Voltage Transformers with your desired capacity and quantity.
- There is no difference between the price of a simple transformer and the price with OEM/ODM branding.
- Prices for spare cores, spare parts, and additional packages are priced separately.
- Prices can be quoted on an FOB/CIF or DDP basis.
Transformer Wiring & Connection
The High-voltage transformer comes with HV and LV terminal markings. The connection group the user can choose between YYn0 and Dyn11 defines the way the device is connected in electrical installation. High-voltage bushings accept standard cable lugs or busbars, while low-voltage terminal has an easy connection solution. The equipment has connection diagrams.
- HV and LV terminal markings follow IEC/GB convention
- Dyn11 and YYn0 connection groups can be chosen
- Connection diagram and terminal arrangement are attached
Compare with Other Transformer Options
Choose the right unit for your project:
| Feature | This Series | Alternative Option |
| Insulation | Oil-immersed / cast-resin as specified | Dry-type or amorphous alloy options |
| Capacity | Per specification (30-2500 kVA typical) | Higher ratings available on request |
| Mounting | Pole / pad / substation per model | Indoor or outdoor per enclosure |
| Loss level | Standard or low-loss series | Amorphous ultra-low loss option |
| Best for | Distribution and power projects | Energy-saving or space-limited sites |
Export Markets & Country Compatibility
Voltage Transformers are sold in many regions such as Southeast Asia, Africa, Latin America, and Europe. 50 Hz type voltage transformers are suitable for most power grids around the world. 60 Hz models are supplied to customers in areas like North America and certain parts of the Middle East. The voltage required for the destination country is matched by the transformer supply.
Transformer Dimensions, Weight & Packing
The dimensions and the size are determined by the capacity, voltage and design type. Average size values of distribution devices: oil-immersed units with the rated capacity of 100 kVA have dimensions of nearly 1000-1200 mm in length, 500-700 mm in depth and 1100-1400 mm in height with the mass of about 600-900 kg; other ratings have bigger dimensions and mass accordingly. Full size drawings and weights of the devices are confirmed with the order and the devices are packaged for sea or land transportation.
- Technical drawings are sent for approval prior to manufacturing
- PKG is performed according to the export standard
- Confirm the method of transportation and place for delivery
Standards & certifications
The fabrication of the JDZ-10 voltage transformer follows IEC 60044-2 / IEC 61869, and all required documentation for the project and certification is available.
- Design standard: IEC 60044-2 / IEC 61869 series.
- Accuracy specification class is 0.2.
- Voltage on the secondary side is 100V / 100/√3V.
- Indoor installation is planned in MV panels and substations.
OEM & B2B supply support
Subian Electric is a recognized manufacturer and factory supplier of electrical equipment, which also supplies voltage transformers to switchgear producers, power companies, and other sellers along with samples and technical expertise.
We welcome requests for matching specs.
- Evaluation samples.
- Custom order quantities.
- OEM/ODM capabilities.
- Customized marking and packaging.
- Document and certifying type assistance.
Frequently Asked Questions
What is a voltage transformer used for?
It reduces the high voltage in the primary circuit (here 10kV) down to a safe voltage in the secondary circuit (100V or 100/√3V), so that different electricity measuring units are able to take readings from the circuit and, thus, protect it.
What accuracy classes are available?
Accuracy classes 0.2, 0.5 and 1.0 are available. Class 0.2 is used for high-accuracy devices whereas classes 0.5 and 1.0 are applied for general measuring and protection purposes.
What secondary voltages can be supplied?
Standard values for the output voltages are 100V and 100/√3V, but it is possible to apply other ratios depending on the applications.
Can I request samples?
Yes, samples can be provided. You need to send your ratio, capacity, accuracy class, quantity, and destination market.
