Overview
The JDZC1-10 / JDZ-10 is a single-phase, indoor semi-enclosed epoxy cast-resin voltage transformer designed for 11kV networks and 12kV switchgear applications. It features a dry-type, cast-resin insulation system suitable for indoor medium-voltage environments, with primary terminals on the top and secondary terminals at the base.
This transformer provides accurate secondary voltage outputs—typically 100V—for metering, monitoring, control signaling, and optional auxiliary power supply. It complies with standard accuracy classes for voltage transformers used in distribution systems and is intended for installation within enclosed switchgear compartments where space efficiency and reliable insulation are required.
Key Ratings Snapshot
| Parameter | Rating |
|---|---|
| Primary Voltage | 10000 V |
| Secondary Voltage (Metering/Control) | 100 V |
| System Voltage Class | 11 kV / 12 kV |
| Insulation Type | Epoxy cast-resin |
| Phase Configuration | Single-phase |
| Installation Environment | Indoor only |
| Construction Type | Semi-enclosed |
| Auxiliary Output | Optional (if specified) |
| Accuracy Class | Standard metering classes (e.g., 0.5, 1.0) |
| Frequency | 50 Hz or 60 Hz |
| Primary Terminal Position | Upper side |
| Secondary Terminal Position | Base side |
Construction
The JDZC1-10 / JDZ-10 features a semi-enclosed construction with epoxy cast-resin insulation, providing robust dielectric strength and moisture resistance suitable for indoor switchgear environments. The high-voltage primary winding and core are encapsulated in epoxy resin, while the low-voltage secondary terminals are accessible at the base for safe and secure connection. This dry-type design eliminates the need for oil, enhancing fire safety and reducing maintenance requirements in compact indoor installations.
Technical Parameters
Service Conditions
- Ambient temperature: -5°C to +40°C
- Installation environment: Indoor switchgear installation
Technical Parameters
The JDZC1-10 / JDZ-10 is a semi-enclosed epoxy cast-resin indoor voltage transformer designed for 11kV networks and 12kV switchgear applications. It features 12/40/75kV insulation level, operates at 50Hz or 60Hz, complies with GB20840.3-2013 and IEC61869-3:2011 standards, and supports secondary outputs of 100V (metering/control) and optional 220V (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 | 240 | 500 |
Installation & Wiring
Installation Diagram
The JDZC1-10 / JDZ-10 series features a base-mounted structure designed for secure installation in indoor switchgear. Mounting must follow the approved outline drawing and switchgear layout to ensure proper alignment, clearance, and mechanical stability.
Wiring Diagram
Primary terminals A and B must be connected in accordance with the approved wiring diagram. Secondary terminal markings vary by configuration: for example, 1a-1b typically denotes a 100V output winding, while 2a-2b indicates an auxiliary output (e.g., 220V). Both single-phase and three-phase wiring arrangements must strictly adhere to the project design drawings. Prior to commissioning, verify terminal markings, grounding connections, and insulation clearances. Ensure the total connected burden on each secondary winding does not exceed its rated capacity (e.g., 80VA or 300VA as specified).
Selection & FAQs
Selection Guide
- Match the actual primary voltage: the listed ratio is 10000/100V; for an 11kV network require an 11000V nameplate ratio rather than relying on the 12kV equipment-class label.
- Select the output package: choose 100V measurement only or 100V plus 220V auxiliary output, with separate terminal identification and burden calculations.
- Correct the winding schedule: the table combines 0.2/6P and 0.5/6P classes without clearly showing corresponding secondary windings; obtain a revised ratio-class-VA diagram.
- Check auxiliary-load performance: verify continuous VA, inrush, power factor and regulation for the 220V load and do not treat maximum output as an accuracy burden.
- Approve the installation: confirm JDZC1-10 versus JDZ-10 naming, 12/40/75kV insulation, semi-enclosed indoor environment, base drawing, clearances, terminal protection and grounding.
Frequently Asked Questions
Q1: Is the JDZ-10 suitable for 12kV indoor switchgear applications?
Yes, it is specifically designed for 11kV networks and 12kV switchgear. It features a 12/40/75kV insulation level for reliable indoor operation. Confirm your exact switchgear dimensions with our engineering team.
Q2: Which accuracy class is available for metering and control outputs?
Yes, multiple classes are available. The 100V secondary output supports 0.2 and 0.5 accuracy classes at 30VA and 50VA respectively. Contact us if your data exceeds these standard scopes.
Q3: Are there specific ambient temperature limits for indoor installation?
Yes, strict limits apply. This semi-enclosed epoxy cast-resin transformer operates safely between -5°C and +40°C. Verify your facility’s climate control meets these conditions before ordering.
Q4: Can the secondary winding provide auxiliary power supply voltages?
Yes, auxiliary power is supported. The 2a-2b power supply winding offers an optional 220V output with a 240VA rated capacity. Specify your auxiliary power requirements during the inquiry stage.
Q5: Does this transformer comply with international IEC standards?
Yes, it is fully certified. It complies with IEC61869-3:2011 and GB20840.3-2013 standards, operating at 50Hz or 60Hz. Request the specific compliance certificates for your region from our sales team.
Q6: How are custom rated outputs handled for special projects?
Customization is available upon request. Standard outputs are 100V for metering and 220V for power supply. Contact our procurement department to discuss custom manufacturing if your needs exceed these scopes.
Q7: Where is the JDZC1-10 epoxy voltage transformer typically applied?
It serves medium voltage networks. This 10kV class indoor semi-enclosed epoxy cast-resin voltage transformer is used for measurement, monitoring, and auxiliary power. Check our catalog for similar cast-resin transformer models.