JDZW-20, JDZW2-20KV Outdoor Cast-Resin Voltage Transformer
JDZW-20, JDZW2-20kV Outdoor Cast-Resin Voltage Transformer Overview The JDZW-20 and JDZW2-20 outdoor voltage transformers are cast-resin insulated units designed for use in medium-voltage power systems. They operate at rated frequencies of 50Hz or 60Hz and are suitable for voltages up to 20kV. These transformers are commonly used for energy metering, voltage control, and relay protection […]
JDZW-20, JDZW2-20kV Outdoor Cast-Resin Voltage Transformer Overview
The JDZW-20 and JDZW2-20 outdoor voltage transformers are cast-resin insulated units designed for use in medium-voltage power systems. They operate at rated frequencies of 50Hz or 60Hz and are suitable for voltages up to 20kV. These transformers are commonly used for energy metering, voltage control, and relay protection in systems with unearthed or weakly grounded neutral points.
Built to comply with IEC186 and GB1207-2006 standards, these transformers are durable, reliable, and specifically designed for outdoor installations, ensuring stable performance under varying environmental conditions. Ideal for power monitoring and protection applications in medium-voltage networks.
JDZW1-20, JDZW2-20kV Voltage Transformer Type Designation
Key Features and Structure of JDZW1-20 and JDZW2-20kV Voltage Transformers:
- J: Voltage transformer.
- D: Single-phase.
- Z: Casting resin insulated.
- W: Designed for outdoor installation.
- 1, 2: Design sequence.
- 20: Rated voltage for 20kV systems.
This designation highlights the JDZW1-20 and JDZW2-20kV voltage transformers’ suitability for outdoor applications, emphasizing their cast-resin insulation, single-phase design, and compatibility with 20kV medium-voltage systems.
Service Conditions for JDZW-20 and JDZW2-20kV Voltage Transformers
- Installation Location: Outdoor.
- Ambient Temperature:
- Maximum: +40°C
- Minimum: -25°C
- Daily Average: Not exceeding 30°C.
- Altitude: Up to 1000m.
- Atmospheric Conditions: Free from severe pollution or contamination.
These service conditions ensure the JDZW1-20 and JDZW2-20kV voltage transformers operate reliably and safely in outdoor medium-voltage systems.
Technical Data for JDZW1-20 and JDZW2-20kV Voltage Transformers
- Technical data provided in the product form.
- Partial discharge test conditions fully comply with GB1207-2006 “Voltage Transformers” standards.
| Type | Rated Voltage
Ratio (V) |
Rated Two Output (VA) | Max Output (VA) | Rated Insulation Level (kV) | |
|---|---|---|---|---|---|
| 0.2 Class | 0.5 Class | ||||
| JDZW1, 2-20 | 20000/220 | 25 | 50 | 600 | 50 |
| JDZW1, 2-20 | 20000/100/220 | 25 | 50 | 600 | 50 |
Notes:
- Custom specifications or high-accuracy voltage transformers can be manufactured to meet specific user requirements for medium-voltage systems.
- During operation, the JDZW-20 and JDZW2-20 voltage transformers are designed to use only one specified voltage ratio at a time for optimal performance. Multiple ratios cannot be used simultaneously to ensure accuracy and reliability in 20kV power applications.
Outline and Dimensions of Installation
Wiring Principles for JDZW-20kV Voltage Transformers
A comprehensive explanation of wiring principles for 20kV voltage transformers, including:
- Type Y Wiring Diagram: For star-type configurations.
- Type V Wiring Diagram: For three-phase circuits with full insulation structure.
Note:
When ordering JDZW1-20 and JDZW2-20kV voltage transformers, please specify the required parameters, including voltage ratio, accuracy class, and output capacity. For custom voltage transformer solutions or special requirements, please contact our technical team. We are dedicated to providing tailored solutions for precise voltage measurement, energy metering, and relay protection across various applications.
FAQs for JDZW-20 Voltage Transformer
- What are the primary applications of the JDZW-20 voltage transformer?
The JDZW-20 voltage transformer is used for energy metering, voltage regulation, and relay protection in 20kV power systems, ideal for outdoor substations and industrial power systems. - How does the epoxy resin construction improve the performance of the JDZW-20 transformer?
Epoxy resin provides superior insulation, moisture resistance, and protection against UV exposure, ensuring long-term durability and low maintenance. - Can the JDZW-20 transformer be customized for specific needs?
Yes, it offers options for different voltage ratios, accuracy classes, and output capacities to meet specific operational requirements. - What maintenance is required for the JDZW-20 Voltage Transformer?
The JDZW-20 requires minimal maintenance, mainly periodic inspections for cleanliness, checking insulation integrity, and verifying fuse protection. - What are the environmental conditions suitable for the JDZW-20 voltage transformer?
It operates efficiently in outdoor environments with a maximum temperature of +40°C, minimum temperature of -25°C, and up to 85% relative humidity. - Why is the JDZW-20 voltage transformer a preferred choice for outdoor installations?
Its fully enclosed design and cast-resin insulation ensure protection against harsh environmental factors, making it ideal for outdoor installations in medium-voltage systems.
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