Overview

The JSZV12-20R Three-Phase Epoxy Resin Combined Voltage Transformer with Fuse is specifically designed for the XGW-12 Outdoor AC Fixed Metal-Enclosed Switchgear. This model features a primary winding equipped with a fuse for enhanced protection. It not only provides 100V measurement voltage but also supplies 220V operating power for circuit breakers, ensuring reliability and operational efficiency.

Type Designation for JSZV12-20R

• J: Voltage transformer
• S: Three-phase
• Z: Casting resin insulated
• V: “V” wiring manner
• 12-30: Voltage grade (20kV)
• R: With fuse

Structural Overview of JSZV12-20R

The JSZV12-20R Indoor Fully Enclosed Epoxy Resin Three-Phase Combined Voltage Transformer with Fuse is designed for enhanced reliability and compactness. Featuring primary windings with built-in fuse protection and a V-wiring configuration, this voltage transformer ensures both safety and efficiency.

The structure is made of epoxy resin casting insulation, offering a fully enclosed design for robust performance. The fuse is integrated into the primary output terminal, enabling easy replacement. Its rated current is precisely matched with the transformer’s short-circuit withstand capacity, optimizing the space used within installations.

In addition to delivering a 100V secondary output voltage for measurement purposes, the JSZV12-20R is equipped with 110V and 220V output terminals, providing reliable power to operational mechanisms. This transformer is ideal for systems requiring compact, high-performance, and multifunctional voltage transformation solutions.

Operating Conditions for JSZV12-20R Voltage Transformer

• Temperature Range: Operates reliably between -5°C and +40°C.
• Altitude: Designed for installations at elevations up to 1,000 meters.
• Humidity: Suitable for environments with relative humidity levels not exceeding 80%.
• Environmental Compatibility: Ideal for locations free from corrosive substances, vapors, or sediment buildup.
• Dust Resistance: Not intended for areas with conductive particles like carbon or metallic dust.
• Stability: Built to withstand normal conditions without exposure to strong vibrations or impacts.

For tailored solutions or additional specifications, reach out to our technical experts.

Technical Parameters of JSZV12 Voltage Transformer

• Load Power Factor: COSΦ = 0.8 (lagging).
• Altitude: ≤1000m, compliant with pollution level II.
• Standards Compliance: Conforms to GB1207-1997 (Voltage Transformers).

Form 1: Technical Data of Voltage Transformer for Measuring for detailed specifications. For custom requirements, contact our technical team.

Type	Rated Voltage Ratio (V)	Accuracy Class & Rated Output (VA)		Max Output (VA)	Rated Insulation Level (kV)
		Class 0.2	Class 0.5
JSZV12-20R	20000/100	30	50	500	24/65/125
JSZV12-20R	20000/100/100	20		600
JSZV12-20R	20000/220	20
JSZV12-20R	20000/100/220	20

Outline and Dimensions of JSZV12 Voltage Transformer

Principle diagram

Ordering Guidelines:

• Voltage and Configuration: Ensure compatibility with 10kV systems and “V” wiring or single-phase setups.
• Application: Specify use for voltage measurement, metering, or auxiliary power (100V/220V outputs).
• Operating Conditions: Verify site conditions (temperature, humidity, altitude) align with specifications.
• Safety Features: Confirm fuse protection and maintenance needs.

Special Requirements: For custom solutions, Please contact our technical team for tailored assistance.

 

FAQs for JSZV12-20R Combined Voltage Transformer

1. What are the primary applications of the JSZV12-20R Combined Voltage Transformer?
The JSZV12-20R is designed for XGW-12 outdoor AC fixed switchgear, making it ideal for voltage measurement, energy metering, and auxiliary power supply in 10kV-20kV power systems.

2. How does the integrated fuse protection enhance system safety?
The built-in fuse safeguards the primary winding against short circuits, ensuring safety and reducing the risk of system failures or damage.

3. Can the JSZV12-20R operate in high-humidity environments?
Yes, it is designed for environments with relative humidity levels not exceeding 80%, provided there are no corrosive substances or conductive dust.

4. What customization options are available for the JSZV12-20R?
Customization includes extended temperature ranges, unique voltage/output configurations, and adaptations for specific environmental conditions like high altitudes.

5. How does the transformer ensure reliable insulation performance?
The epoxy resin casting provides superior insulation, moisture resistance, and protection against aging, making it suitable for long-term operation in demanding environments.

6. Why should I choose the JSZV12-20R over traditional voltage transformers?
The JSZV12-20R offers a compact, dual-functional design with enhanced safety, easy maintenance, and compliance with international standards, making it a cost-effective and reliable solution for modern power systems.

 

• Introduction to Combined Transformers and Their Classification
• Working Principle of Zero-Sequence Current Transformers
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• Magnetic Saturation in 20kV Voltage Transformers and Its Adverse Effects
• Single-Phase Voltage Transformers Role, Function, and Importance in Power Systems
• Troubleshooting Techniques for Burnt Voltage Transformers