Product Overview
The JDZC2-10 semi-enclosed indoor epoxy cast-resin voltage transformer is designed for 11kV networks and 12kV switchgear applications. It converts 10000V primary voltage into secondary voltage outputs for voltage metering, monitoring and auxiliary power supply circuits.
This model is similar in function to the JDZC3 series, but it uses a more compact semi-enclosed epoxy cast-resin construction. The JDZC2-10 sample configuration provides a 100V secondary winding for metering/control and a 220V secondary winding for auxiliary power. Compared with JDZC3-10, JDZC2-10 has lower secondary capacity, lower maximum output and a smaller, lighter body.
Application Position
The JDZC2-10 voltage transformer is normally installed in the voltage transformer compartment of indoor medium-voltage switchgear. It provides a 100V secondary signal to meters, monitoring devices or control equipment, and a 220V auxiliary power output where required by the electrical design.
Main Applications
- 11kV networks and 12kV indoor medium-voltage switchgear
- Voltage metering and voltage monitoring circuits
- Control voltage signal output circuits
- Auxiliary 220V power supply circuits
- Compact distribution panels requiring both metering and auxiliary power outputs
Key Specifications
| Item | Specification |
|---|---|
| Model | JDZC2-10 |
| Product type | Indoor voltage transformer / potential transformer |
| Structure | Semi-enclosed type |
| Insulation structure | Indoor epoxy cast-resin insulation |
| Installation | Indoor switchgear installation |
| Application voltage class | 11kV network / 12kV switchgear class |
| Rated primary voltage | 10000V |
| Secondary output | 100V for metering/control; 220V for auxiliary power |
| Accuracy class | 0.2 / 0.5 for metering/control winding |
| Rated insulation level | 12/40/75kV |
| Rated frequency | 50Hz or 60Hz |
| Ambient temperature | -5°C to +40°C |
| Max. output | 1000VA |
| Standards | GB1207-2006, IEC60044-2:2003 and project-specific requirements |
Application Fit
Suitable For
- Indoor 11kV networks and 12kV medium-voltage switchgear
- Circuits requiring 100V metering or control voltage output
- Applications requiring a 220V auxiliary power secondary winding
- Compact switchgear compartments where lower capacity than JDZC3 is acceptable
- Projects requiring semi-enclosed epoxy cast-resin voltage transformer construction
Not Recommended For
- Outdoor exposed installation without a suitable enclosure
- Systems above the specified insulation level
- Applications requiring high auxiliary output capacity such as JDZC3-10
- Applications requiring oil-immersed voltage transformer construction
JDZC2-10 and JDZC3-10 Difference
| Item | JDZC2-10 | JDZC3-10 |
|---|---|---|
| Structure | Semi-enclosed epoxy cast-resin structure | Indoor epoxy cast-resin structure with larger capacity |
| Metering/control output | 100V, 30/50VA | 100V, 60/100VA |
| Auxiliary power output | 220V, 500VA | 220V, 1000VA |
| Max. output | 1000VA | 2000VA |
| Approximate weight | 30kg | 43kg |
| Typical selection | Compact switchgear with moderate auxiliary output | Applications requiring higher secondary capacity |
Technical Structure
| Component | Description |
|---|---|
| Core and winding system | Electromagnetic voltage transformation structure for 10000V primary voltage |
| Primary winding | Connected to the medium-voltage side through A and B primary terminals |
| Metering/control winding | 1a-1b secondary winding providing 100V output for metering or monitoring |
| Power secondary winding | 2a-2b secondary winding providing 220V auxiliary power output |
| Epoxy cast-resin body | Semi-enclosed indoor dry-type insulation structure |
| Mounting base | Metal base and fixing structure for cabinet installation |
Model Designation
| Code | Meaning |
|---|---|
| J | Voltage transformer |
| D | Single-phase voltage transformer structure |
| Z | Epoxy cast-resin insulation |
| C | Product structure / auxiliary output design code |
| 2 | Design series code |
| 10 | Model voltage code for 11kV network / 12kV switchgear class |
Technical Data
The following technical data is based on the JDZC2-10 product sample. The page uses 11kV network / 12kV switchgear wording for export applications, while the actual primary voltage remains listed as 10000V according to the product technical data.
| Item | Technical Value |
|---|---|
| Application voltage class | 11kV network / 12kV switchgear class |
| Rated primary voltage | 10000V |
| Metering/control secondary winding | 1a-1b |
| Metering/control output voltage | 100V |
| Accuracy class | 0.2 / 0.5 |
| Rated capacity for metering/control winding | 30 / 50VA |
| Auxiliary power secondary winding | 2a-2b |
| Auxiliary power output voltage | 220V |
| Rated capacity for auxiliary power winding | 500VA |
| Max. output | 1000VA |
| Rated insulation level | 12/40/75kV |
| Rated frequency | 50Hz or 60Hz |
| Ambient temperature | -5°C to +40°C |
Technical notes:
- Rated output and its corresponding accuracy class are supplied as one selected combination only.
- If the required parameters exceed the listed range, they should be confirmed by agreement between manufacturer and purchaser.
- The 100V secondary output is used for metering or monitoring circuits.
- The 220V secondary output is used as an auxiliary power output according to project requirements.
- Compared with JDZC3-10, JDZC2-10 is suitable for lower auxiliary output and more compact installation requirements.
Installation and Dimensions
The JDZC2-10 series should be installed according to the approved outline drawing, wiring diagram and switchgear layout.
Overall Dimension Reference
| Item | Dimension / Specification |
|---|---|
| Overall height | 370 ±3 mm |
| Top terminal spacing | 163 ±2 mm |
| Main body reference width | 200 mm |
| Overall base length | 285 mm |
| Side body diameter | Ø178 mm |
| Base width | 160 ±2 mm |
| Mounting width | 120 ±1 mm |
| Primary terminal bolt | 2-M8 |
| Base fixing bolts | 4-M12 |
| Approximate weight | 30 kg |
Terminal and Wiring Notes
- Primary terminals A and B should be connected according to the approved wiring diagram.
- Secondary terminals 1a and 1b provide 100V output for metering or monitoring.
- Secondary terminals 2a and 2b provide 220V auxiliary power output.
- Terminal markings, grounding arrangement and insulation clearance must be checked before commissioning.
- The total connected burden must not exceed the rated capacity of each secondary winding.
Compliance and Testing
The JDZC2-10 series is designed for indoor medium-voltage voltage transformer applications. The provided sample refers to GB1207-2006 and IEC60044-2:2003, together with customer-specific requirements.
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
- Insulation resistance test
- Secondary winding and auxiliary power winding verification
Engineering Notes
- Select JDZC2-10 for compact 11kV network / 12kV switchgear applications requiring voltage measurement and auxiliary power output.
- Confirm the 100V metering/control winding burden before connecting meters or monitoring devices.
- Confirm the 220V auxiliary power load before connecting control or auxiliary equipment.
- Do not exceed the rated output of each secondary winding.
- For higher auxiliary output requirement, JDZC3-10 may be more suitable.
Selection Guide
How to select JDZC2-10
Select JDZC2-10 when the project requires a compact semi-enclosed epoxy cast-resin voltage transformer for 11kV networks or 12kV switchgear with both 100V metering/control output and 220V auxiliary power output.
How to choose JDZC2-10 or JDZC3-10
Choose JDZC2-10 for compact installation and moderate auxiliary output requirements. Choose JDZC3-10 when the project requires higher metering/control burden, higher auxiliary power output or higher maximum output capacity.
How to confirm secondary output requirements
Use the 1a-1b secondary winding for 100V metering or monitoring circuits. Use the 2a-2b secondary winding for 220V auxiliary power circuits. Confirm the burden of each circuit before final selection.
How to confirm rated capacity
The metering/control winding is rated 30/50VA for accuracy classes 0.2/0.5. The auxiliary power winding is rated 500VA. The total output and operating condition should not exceed the transformer rating.
Ordering Information
Please provide the following information when ordering or requesting a quotation:
- Product model: JDZC2-10
- Rated primary voltage and voltage class
- Metering/control secondary output requirement
- Auxiliary power secondary output requirement
- Required accuracy class and rated capacity
- Rated insulation level
- Rated frequency: 50Hz or 60Hz
- Installation dimensions or switchgear layout requirements
- Applicable standard or project specification
- Quantity
- Special requirements for drawings, test reports, certificates, nameplate language, packaging or shipping