JDZ10-3,6,10A (RZL10) Indoor Epoxy Cast-Resin Voltage Transformer

Product Overview

JDZ10-3/6/10A/160 (RZL10) is an indoor epoxy cast-resin voltage transformer for medium-voltage switchgear applications. It is used in 50Hz / 60Hz AC systems to convert medium voltage into standardized secondary voltage for voltage measurement, electric energy metering, voltage monitoring and auxiliary secondary circuits.

This model is similar in application family to the JDZ10-3/6/10B/180 series, but it should be written with a different product position. JDZ10-3/6/10A/160 (RZL10) is a more compact RZL10-style 160mm structure, with lower weight and smaller cabinet footprint. It is best used when the project requires a compact line-voltage VT/PT with 3/0.1kV, 6/0.1kV or 10/0.1kV output, and optional 0.1/0.1kV or 0.22kV secondary output.

Product Display

Application Position

The JDZ10-3/6/10A/160 transformer is installed inside indoor air-insulated switchgear, metering cabinets or compact medium-voltage panels. The primary side is connected between phases according to the line-voltage scheme, while the secondary side provides 100V, dual 100V or 220V output for meters, monitoring equipment, relays or auxiliary devices.

Main Applications

• Indoor 3kV, 6kV and 10kV medium-voltage switchgear
• 3.6kV, 7.2kV and 12kV class distribution cabinets
• Line-voltage measurement and voltage indication
• Electric energy metering and voltage monitoring
• Relay protection voltage input circuits
• Auxiliary 220V secondary output applications
• Compact RZL10-style cabinet installations

Key Specifications

Application Fit

Suitable For

• Compact indoor switchgear requiring a line-voltage VT/PT
• 3kV, 6kV and 10kV systems requiring 100V secondary output
• Metering and monitoring circuits using 0.1kV secondary voltage
• Dual-secondary circuits requiring 0.1/0.1kV output
• Cabinet auxiliary circuits requiring 0.22kV secondary output
• Projects requiring a smaller alternative to 180mm cabinet-type voltage transformers

Not Recommended For

• Outdoor exposed installation without enclosure protection
• Grounded phase-to-neutral VT schemes requiring 0.1/√3 and 0.1/3 output logic
• Residual-voltage or open-delta protection circuits as the main function
• High-frequency electronic transformer applications
• Oil-immersed voltage transformer applications
• Large handcart-type three-phase VT applications

Installation Conditions

• Installation location: indoor air-insulated switchgear or protected indoor cabinet
• Rated frequency: 50Hz / 60Hz power-frequency AC system
• Ambient temperature: -25°C to +40°C
• Electrical clearance: confirm phase-to-phase clearance and primary terminal spacing before installation
• Terminal access: keep the secondary terminal box accessible for testing and maintenance
• Maintenance: inspect resin body, terminal fastening and grounding point during routine service

Technical Structure

The JDZ10-3/6/10A/160 series uses a compact epoxy cast-resin body with primary and secondary windings encapsulated in solid insulation. Compared with JDZX grounded-type products, this model is focused on line-voltage transformation and practical cabinet secondary output, including 0.1kV, 0.1/0.1kV and 0.22kV configurations.

Model Designation

• J = Voltage transformer
• D = Single-phase voltage transformer structure
• Z = Epoxy cast-resin insulation
• 10 = Design sequence or product series code
• 3 / 6 / 10 = Rated system voltage code for 3kV, 6kV or 10kV applications
• A = Compact structure or configuration code
• 160 = RZL10-style structure / outline size code

Technical Data

The following technical data is organized from the JDZ10-3/6/10A/160 (RZL10) sample. For international product pages, the 3kV, 6kV and 10kV versions should be expressed as 3.6kV, 7.2kV and 12kV insulation classes.

Technical notes:

• One transformer is supplied with one selected accuracy class and corresponding rated output combination.
• The 0.1kV output is normally used for metering, voltage indication and monitoring.
• The 0.1/0.1kV version is used when two separated secondary circuits are required.
• The 0.22kV output is suitable for auxiliary voltage requirements in cabinet designs.
• The 160 structure is more compact than the 180 structure, while the sample weight is approximately 21.76kg.

Installation and Dimensions

Dimension and Weight Reference

Terminal and Wiring Notes

• The sample wiring diagrams show single-secondary and dual-secondary line-voltage output arrangements.
• Primary terminals are marked as A and B according to the drawing.
• Secondary terminals may be marked as a, b, 1a, 1b, 2a and 2b depending on configuration.
• For 0.22kV auxiliary secondary output, confirm the load requirement and rated output before production.
• Terminal polarity, grounding and cabinet clearance must be checked before commissioning.

Compliance and Testing

The product information references GB20840.3-2013 and IEC61869-3:2011. For export projects, the final standard reference should be aligned with the buyer’s technical specification, applicable grid requirements and approved test plan.

Typical Routine Tests

• Visual inspection and nameplate verification
• Ratio verification
• Polarity and terminal marking check
• Accuracy test at specified rated burden
• Power-frequency withstand voltage test
• Induced withstand voltage test where applicable
• Insulation resistance test
• Secondary terminal and grounding inspection
• Auxiliary secondary output verification when supplied

Engineering Notes

• Use JDZ10-3A/160 for 3kV systems, JDZ10-6A/160 for 6kV systems and JDZ10-10A/160 for 10kV systems.
• For export pages, describe these models as 3.6kV, 7.2kV and 12kV class products according to insulation level.
• Compared with JDZ10-10B/180, this 160 structure is smaller and lighter, with approx. 21.76kg weight.
• Use this model when the project needs line-voltage output such as 10/0.1kV or 10/0.22kV.
• Use JDZX grounded-type products when the project requires 10/√3, 0.1/√3 and 0.1/3 residual-voltage output.
• Do not describe this product as a high-frequency transformer; it is a 50Hz / 60Hz power-frequency VT/PT.

Selection Guide

Select by voltage class: Choose JDZ10-3A/160 for 3kV systems, JDZ10-6A/160 for 6kV systems and JDZ10-10A/160 for 10kV systems. Use 3.6kV, 7.2kV and 12kV class wording for international pages.

Select by cabinet space: Choose the 160 structure when the cabinet requires a smaller and lighter line-voltage VT than the 180 structure. The sample weight is approximately 21.76kg.

Select by secondary output: Use 0.1kV for metering and monitoring, 0.1/0.1kV for separated secondary circuits and 0.22kV for auxiliary voltage output.

Select by output burden: Standard 0.1kV versions support up to 400VA max. output. Dual 0.1/0.1kV and 0.22kV versions support up to 350VA max. output in the sample data.

Select by inquiry clarity: A clear inquiry should state model, voltage ratio, secondary output type, accuracy class, rated output, max. output, insulation level, terminal arrangement and quantity.

FAQs