Overview
The JDZC3-10 is an indoor epoxy cast-resin voltage transformer designed for 6kV, 10kV, and 12kV medium-voltage switchgear systems. It features a solid epoxy cast-resin insulation structure, providing reliable electrical isolation and mechanical stability in indoor environments.
This transformer delivers accurate secondary voltage outputs suitable for metering, monitoring, and auxiliary power applications. A standard configuration includes a 100V winding for metering or control circuits and a separate 220V winding for auxiliary power supply. It complies with relevant IEC and national standards for indoor medium-voltage instrument transformers and is intended for use in enclosed switchgear where space efficiency and dual-output functionality are required.
Key Ratings Snapshot
| Parameter | Rating |
|---|---|
| System Voltage | 6kV / 10kV / 12kV |
| Primary Voltage | As per system (e.g., 10/√3 kV) |
| Secondary Voltage (Metering) | 100V |
| Secondary Voltage (Auxiliary) | 220V |
| Accuracy Class (Metering) | 0.2, 0.5, or 1 (as specified) |
| Thermal Burden | Per IEC 61869-3 |
| Insulation Level | According to system voltage class |
| Frequency | 50Hz or 60Hz |
| Phase Configuration | Single-phase |
| Installation Position | Vertical, indoors |
| Insulation Material | Epoxy cast-resin |
| Auxiliary Output | Optional 220V winding |
Construction
The JDZC3 features a robust epoxy cast-resin construction, encapsulating the primary and secondary windings in a solid, void-free resin matrix. This design provides excellent dielectric strength, moisture resistance, and mechanical durability, making it ideal for indoor medium-voltage environments. The core is made of high-permeability grain-oriented silicon steel to ensure low losses and high accuracy. Terminals are embedded in the resin housing with clearly marked polarity indicators. The entire assembly is non-flammable, maintenance-free, and suitable for long-term operation in switchgear compartments without ventilation or special environmental controls.
Technical Parameters
Service Conditions
- Ambient temperature: -5°C to +40°C
- Installation environment: Indoor switchgear installation
Technical Parameters
The JDZC3 is an indoor epoxy cast-resin voltage transformer designed for 6kV, 10kV, and 12kV systems. It features cast-resin insulation, operates within an ambient temperature range of -5°C to +40°C, and complies with GB1207-2006 and IEC60044-2:2003 standards.
| Rated Voltage(kV) |
Accuracy class / Rated output (VA) |
Max. output (VA) |
||||
|---|---|---|---|---|---|---|
| 1a-1b (Metering or monitoring) |
2a-2b (Power supply) |
|||||
| Output voltage(V) |
Accuracy class |
Rated capacity(VA) |
Output voltage(V) |
Rated capacity(VA) |
||
| 10000 | 100 | 0.2/0.5 | 60/100 | 220 | 1000 | 2000 |
Installation & Wiring
Installation Diagram
The JDZC3-10 series voltage transformer is designed for indoor installation within switchgear assemblies. It features a base-mounted structure with defined mounting dimensions and terminal locations as shown in the diagram. Installation must follow the approved outline drawing, wiring diagram, and switchgear layout to ensure proper electrical clearances, mechanical stability, and compliance with safety standards.
Selection & FAQs
Selection Guide
- Define the primary rating: specify the exact 6kV, 10kV or 12kV winding ratio; the page does not provide a separate ratio schedule for JDZC3-6, -10 and -12.
- Coordinate insulation: require the correct highest-equipment voltage and withstand levels for each primary version rather than applying the single published 12/40/75kV value to all variants.
- Select metering performance: choose class 0.2 at 60VA or class 0.5 at 100VA after including instruments and secondary lead voltage drop.
- Check auxiliary-load behavior: keep the 220V winding within 1000VA and verify inrush, power factor, duty cycle and voltage regulation for the connected equipment.
- Approve mechanical and safety details: confirm the outline drawing, terminal positions, indoor enclosure, ventilation, mounting, secondary protection, grounding and current project standard.
Frequently Asked Questions
Q1: Can this voltage transformer be used in outdoor switchgear?
No, it is strictly designed for indoor switchgear installation. It features epoxy cast-resin insulation and operates between -5°C and +40°C. Contact us for outdoor-rated alternatives.
Q2: Which accuracy class is suitable for power supply applications?
Choose the 2a-2b terminals for power supply, offering 220V output and 1000VA rated capacity. For metering, the 0.2 or 0.5 class at 100V is available. Specify your exact requirements during ordering.
Q3: What is the maximum ambient temperature for installation?
It operates within a strict -5°C to +40°C ambient temperature range. This epoxy cast-resin voltage transformer is optimized for standard indoor switchgear environments. Verify site conditions before installation.
Q4: Can the rated output capacity be customized beyond 2000VA?
Yes, custom outputs are available if your data exceeds the standard 2000VA maximum output. This is subject to a specific agreement between the manufacturer and purchaser. Please contact our sales team for details.
Q5: Which international standards does this voltage transformer comply with?
Yes, it complies with IEC60044-2:2003 and GB1207-2006 standards. These certifications ensure reliable performance for 6kV, 10kV, and 12kV systems. Request the full test report from your account manager.
Q6: What type of insulation does the JDZC3-10 use?
The JDZC3-10 utilizes high-quality epoxy cast-resin insulation. This design provides excellent dielectric strength and mechanical stability for indoor 10kV applications. Contact us for material certificates.
Q7: Is this suitable for 12kV distribution networks?
Yes, it is fully compatible with 6kV, 10kV, and 12kV rated systems. The 10kV rated voltage model is specifically engineered for these medium-voltage indoor distribution networks. Confirm your system voltage during inquiry.