Product Overview
The JSZFW-10RW3 voltage transformer is an outdoor cast-resin three-phase anti-ferroresonance measurement device designed for 3kV, 6kV, and 10kV medium-voltage distribution systems. This advanced voltage transformer features specialized anti-ferroresonance technology combined with epoxy resin cast insulation, providing excellent protection against dangerous ferroresonance phenomena while ensuring reliable operation in harsh outdoor environments.
The JSZFW-10RW3 delivers precise three-phase voltage measurement for protection and metering applications with multiple accuracy classes (0.2, 0.5, 1, 3) and flexible winding configurations (single or double winding). The anti-ferroresonance design prevents dangerous overvoltages and harmonic distortions in power networks. The epoxy resin cast construction ensures maintenance-free operation while providing superior insulation performance with insulation levels up to 12/42/75kV.
Product Display
Application Position
The JSZFW-10RW3 is installed in outdoor switchgear, substations, and distribution networks where reliable three-phase voltage measurement and ferroresonance protection are required. The anti-ferroresonance design is particularly important in systems with long transmission lines, cable networks, or where switching operations may trigger ferroresonance conditions. The epoxy resin insulation provides excellent moisture resistance and UV protection for long-term outdoor operation.
Main Applications
- 3kV, 6kV, and 10kV outdoor distribution networks
- Substations requiring ferroresonance protection
- Industrial facilities with medium-voltage supply
- Protection relay voltage input
- Power quality monitoring and metering
- Cable networks and long transmission lines
Application Case Studies
Application Scenario 1: Substation Ferroresonance Protection
Utilities deploy the JSZFW-10RW3 anti-ferroresonance voltage transformer in 10kV substations where ferroresonance conditions may occur during switching operations or ground faults. The specialized anti-ferroresonance core design prevents dangerous overvoltages that could damage equipment and compromise system reliability, while providing accurate voltage measurement for protection and metering applications.
Application Scenario 2: Industrial Medium-Voltage Networks
Industrial facilities with 6kV or 10kV incoming supply require both accurate voltage measurement and protection against ferroresonance phenomena. The JSZFW-10RW3 offers multiple accuracy classes (0.2, 0.5, 1, 3) to meet different measurement requirements, with single or double winding configurations for enhanced system flexibility and the anti-ferroresonance design ensures stable operation in demanding industrial environments.
Application Fit
Suitable For
- Outdoor 3kV, 6kV, and 10kV voltage measurement
- Substations with ferroresonance protection requirements
- Industrial facilities with medium-voltage supply
- Power quality monitoring applications
- Cable networks and long transmission lines
- Environments requiring maintenance-free operation
Not Recommended For
- Indoor-only compact switchgear applications
- Current measurement applications (use CT instead)
- High-voltage systems above 12kV (use higher voltage class models)
- Applications without ferroresonance concerns (standard PT may be more economical)
Installation Conditions
- Installation position: Outdoor switchgear, substations, or distribution points
- Ambient temperature: -5°C to +40°C
- Altitude: ≤ 1000m (standard), higher altitude available on request
- Insulation: Epoxy resin cast
- Frequency: 50Hz or 60Hz
- Connection: Three-phase with anti-ferroresonance design
- Maintenance: Minimal maintenance required (epoxy resin design)
Technical Parameters
The JSZFW-10RW3 is an outdoor cast-resin three-phase anti-ferroresonance voltage transformer for 3kV, 6kV, and 10kV systems. Operating temperature -5°C to +40°C, compliant with GB20840.3-2013 and IEC61869-3:2011. Features anti-ferroresonance design, epoxy resin insulation, and multiple winding configurations.
VT Data – Single Winding
| Rated Voltage Ratio (V) |
Accuracy Class & Rated Output (VA) |
Limit Output (VA) |
Insulation Level (kV) |
|---|---|---|---|
| 3000/√3 : 100/√3 : 100 | 0.2: 60 0.5: 120 1: 240 3: 600 |
1200 | 3.6/23/40 |
| 6000/√3 : 100/√3 : 100 | 0.2: 60 0.5: 120 1: 240 3: 600 |
1200 | 7.2/32/60 |
| 10000/√3 : 100/√3 : 100 | 0.2: 60 0.5: 120 1: 240 3: 600 |
1200 | 12/42/75 |
VT Data – Double Winding
| Rated Voltage Ratio (V) |
Rated Output (VA) |
Limit Output (VA) |
Insulation Level (kV) |
|---|---|---|---|
| 3000/√3 : 100/√3 : 100/√3 : 100 | 45/45 or 60/60 | 600/600 | 3.6/23/40 |
| 6000/√3 : 100/√3 : 100/√3 : 100 | 45/45 or 60/60 | 600/600 | 7.2/32/60 |
| 10000/√3 : 100/√3 : 100/√3 : 100 | 45/45 or 60/60 | 600/600 | 12/42/75 |
Installation
Dimension Reference
| View | Key Dimensions |
Application Note |
|---|---|---|
| Front View | Width 247mm; Height 438mm; Base 590mm | Five bushings (A, O, B, N, C) |
| Side View | Width 270mm; Depth 430mm | Secondary terminal box and nameplate |
| Top View | 120 x 330 x 250 x 380 x 710mm | Bushing layout (A, B, C and O, N) |
Wiring Diagram
Installation Guidelines
- Install in outdoor switchgear or substation with adequate ventilation
- Connect primary terminals A, B, C to three-phase system
- Connect neutral terminal N to system ground
- Connect secondary terminals to meters and protection devices
- Ensure proper grounding of secondary circuit
- Verify voltage ratio matches system requirements before commissioning
- Check insulation resistance before energizing
Anti-Ferroresonance Features
The JSZFW-10RW3 incorporates advanced anti-ferroresonance technology including:
- Specialized core design prevents ferroresonance phenomena
- Prevents dangerous overvoltages during switching operations
- Eliminates harmonic distortions in power networks
- Ensures stable operation in cable networks and long transmission lines
Epoxy Resin Features
The JSZFW-10RW3 incorporates advanced epoxy resin technology including:
- Excellent moisture resistance for outdoor operation
- UV protection for long-term weather exposure
- Superior insulation performance with up to 12/42/75kV level
- Maintenance-free construction eliminating periodic inspection
Standards
The JSZFW-10RW3 anti-ferroresonance voltage transformer complies with GB20840.3-2013 and IEC61869-3:2011 for voltage transformers, ensuring compatibility with Chinese and international standards for medium-voltage measurement applications.
Selection Guide
Select by system voltage: Choose JSZFW-10RW3 for 3kV, 6kV, or 10kV systems with appropriate insulation level.
Select by accuracy class: Use 0.2 for high-precision metering, 0.5 for standard metering, 1 for general measurement, or 3 for indication purposes.
Select by winding configuration: Choose single winding for basic applications or double winding for enhanced system flexibility.
Select by rated output: Choose rated output (60-600VA) based on connected burden requirements.
Ordering Information
When ordering the JSZFW-10RW3 anti-ferroresonance voltage transformer, please specify:
- Model: JSZFW-10RW3
- System voltage: 3kV, 6kV, or 10kV
- Accuracy class: 0.2, 0.5, 1, or 3
- Rated output: Specify VA value from table
- Winding configuration: Single or double winding
- Frequency: 50Hz or 60Hz
- Installation type: Outdoor
- Quantity
FAQs