Overview
The JDZC2-10 is a semi-enclosed indoor epoxy cast-resin voltage transformer rated for 11kV networks and 12kV switchgear applications. It features a compact, single-phase design with epoxy cast-resin insulation, providing reliable performance in medium-voltage environments.
This transformer delivers accurate secondary outputs of 100V for metering and control circuits and 220V for auxiliary power supply. It is suitable for use in indoor switchgear compartments where space is limited and both metering and auxiliary power functions are required. The unit complies with standard requirements for indoor voltage transformers used in distribution systems up to 12kV.
Key Ratings Snapshot
| Parameter | Rating |
|---|---|
| Primary Voltage | 10000V |
| Secondary Voltage (Metering) | 100V |
| Secondary Voltage (Auxiliary) | 220V |
| System Voltage Class | 11kV / 12kV |
| Insulation Type | Epoxy cast-resin |
| Phase Configuration | Single-phase |
| Installation Environment | Indoor only |
| Construction Type | Semi-enclosed |
Construction
The JDZC2-10 employs a semi-enclosed epoxy cast-resin construction, combining mechanical robustness with excellent electrical insulation properties. The core and windings are fully encapsulated in epoxy resin, which provides high dielectric strength, moisture resistance, and thermal stability. This design ensures long-term reliability in indoor medium-voltage switchgear environments while maintaining a compact and lightweight form factor compared to fully enclosed or oil-immersed alternatives.
Technical Parameters
Service Conditions
- Ambient temperature: -5°C to +40°C
- Installation environment: Indoor switchgear installation
Technical Parameters
The JDZC2-10 is a semi-enclosed epoxy cast-resin indoor voltage transformer designed for 11kV networks and 12kV switchgear applications. It features epoxy cast-resin insulation, operates within an ambient temperature range of -5°C to +40°C, complies with GB1207-2006 and IEC60044-2:2003 standards, and supports dual secondary outputs for metering/control and auxiliary power.
| 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 | 30/50 | 220 | 500 | 1000 |
Installation & Wiring
Installation Diagram
The JDZC2-10 semi-enclosed epoxy cast-resin voltage transformer must be installed in accordance with the approved outline drawing, wiring diagram, and switchgear layout. Ensure proper alignment using the specified mounting width of 120 ±1 mm and secure the unit with four M12 base fixing bolts. Primary terminals A and B should be connected as per the approved wiring diagram, and all terminal markings, grounding arrangements, and insulation clearances must be verified before commissioning.
Selection & FAQs
Selection Guide
- Confirm the primary ratio: the published winding is 10000V; an 11kV network requires a correctly rated 11000V option rather than reliance on the 12kV equipment-class label.
- Select metering accuracy: specify class 0.2 at 30VA or class 0.5 at 50VA after calculating instrument burden and secondary lead voltage drop.
- Check the 220V load: keep continuous demand within 500VA and verify inrush, duty cycle, power factor and allowable voltage dip for coils or other auxiliary equipment.
- Separate rated and maximum output: 1000VA is the transformer’s maximum thermal output, not the capacity available at class 0.2 or 0.5 accuracy.
- Approve panel integration: confirm semi-enclosed indoor conditions, 12/40/75kV insulation, 120mm width, four M12 fixings, A–B terminals, circuit protection and grounding.
Frequently Asked Questions
Q1: Can this 10kV voltage transformer be used on 11kV networks?
Yes, it is designed for 11kV networks and 12kV switchgear applications. It features semi-enclosed epoxy cast-resin insulation for reliable indoor operation. Confirm exact system parameters with our engineering team.
Q2: Which accuracy class is suitable for metering and monitoring outputs?
The 1a-1b secondary output supports 0.2 or 0.5 accuracy classes at 100V. Select 0.2 class for high-precision metering and 0.5 for general monitoring, with rated capacities of 30VA or 50VA respectively.
Q3: What are the ambient temperature limits for indoor installation?
This epoxy cast-resin voltage transformer operates within an ambient temperature range of -5°C to +40°C. It is strictly designed for indoor switchgear installation environments. Verify local climate conditions before ordering.
Q4: Does this model comply with international IEC voltage transformer standards?
Yes, the JDZC2-10 fully complies with IEC60044-2:2003 and GB1207-2006 standards. Custom configurations beyond standard rated outputs are subject to agreement. Contact our sales team for specific certification documents.
Q5: How are non-standard output requirements handled for this transformer?
Standard outputs include 30/50VA for metering and 500VA for auxiliary power. If your project data exceeds these scopes, specifications are subject to manufacturer-purchaser agreement. Please provide detailed load requirements for custom evaluation.
Q6: What type of switchgear application is this epoxy resin transformer designed for?
It is a semi-enclosed indoor voltage transformer specifically engineered for 12kV switchgear applications. The epoxy cast-resin insulation ensures safe operation in indoor electrical distribution networks. Request the latest product catalog for more details.