Overview
The JSZW2-10W is a three-phase outdoor epoxy resin cast voltage transformer designed for 10kV medium-voltage distribution systems. It utilizes advanced epoxy resin insulation technology, ensuring high dielectric strength and long-term reliability in harsh outdoor environments.
This transformer supports multiple accuracy classes (0.2, 0.5, 1) and rated outputs from 60 to 240VA, making it suitable for both metering and protection applications. It complies with standard requirements for outdoor voltage measurement in substations, industrial facilities, and distribution networks, offering maintenance-free operation with an insulation level of 7.2/32/60kV.
Key Ratings Snapshot
| Parameter | Rating |
|---|---|
| System Voltage | 10kV |
| Insulation Level | 7.2/32/60kV |
| Accuracy Classes | 0.2, 0.5, 1 |
| Rated Output | 60–240VA |
| Phase Configuration | Three-phase |
| Primary Connection | Star-connected |
| Secondary Connection | Star-connected |
| Frequency | 50Hz |
| Weight | 75kg |
Construction
The JSZW2-10W features a robust epoxy resin cast construction that encapsulates all active components, providing excellent mechanical strength and environmental protection. The insulation system is fully sealed against moisture ingress and resistant to UV radiation, ensuring stable performance in outdoor installations. Primary and secondary windings are arranged in a star configuration to deliver balanced three-phase voltage signals. The compact, lightweight design (75kg) facilitates easy mounting on poles or substation structures without requiring extensive support infrastructure. All external surfaces are smooth and hydrophobic, minimizing contamination buildup and enhancing long-term dielectric reliability.
Technical Parameters
Service 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
- Grounding: Connect neutral terminal per local electrical codes
- Maintenance: Minimal maintenance required (epoxy resin design)
Technical Parameters
The JSZW2-10W is an outdoor epoxy resin cast-resin voltage transformer designed for 10kV systems. It features a three-phase configuration with epoxy resin insulation, operates within -5°C to +40°C ambient temperature, and is rated for altitudes up to 1000m (higher on request). The unit complies with GB20840.3-2013 and IEC61869-3:2011 standards and supports multiple accuracy classes with outputs up to 600 VA.
| Type | Rated
ratio |
Accuracy Class and
Rated Output (VA) |
Max
output |
|
|---|---|---|---|---|
| JSZW2-6W | 6000/√3 : 100/√3 : 100/3 | 0.2/6P(3P) | 45/120 | 600VA |
| 0.5/6P(3P) | 90/120 | |||
| 1/6P(3P) | 150/120 | |||
| JSZW2-10W | 10000/√3 : 100/√3 : 100/3 | 0.2/6P(3P) | 60/120 | 600VA |
| 0.5/6P(3P) | 150/120 | |||
| 1/6P(3P) | 240/240 | |||
Installation & Wiring
Installation Diagram
The JSZW2-10W outdoor epoxy resin voltage transformer is designed for mounting on a support structure or switchgear frame using the provided mounting holes (13x18mm). Ensure adequate clearance around the unit for ventilation and maintenance access. The three high-voltage insulators are spaced at 170±5mm intervals to align with standard busbar configurations.
Wiring Diagram
Connect the primary terminals A, B, and C to the corresponding phases of the three-phase system. The neutral terminal N must be connected to the system ground. Secondary terminals deliver scaled-down voltage signals to metering instruments and protective relays. Always ground the secondary circuit’s neutral point to ensure safety and measurement accuracy. Confirm that the rated voltage ratio matches the system specifications before energizing the transformer.
Selection & FAQs
Selection Guide
- Select for 10kV system voltage with 7.2/32/60kV insulation level.
- Choose accuracy class 0.2 for high-precision metering, 0.5 for standard metering, or 1 for general measurement.
- Pick rated output (60, 150, or 240 VA) based on the connected burden requirements.
- Specify system frequency: 50Hz or 60Hz.
- Confirm outdoor installation suitability for your application environment.
- Provide required quantity when placing your order.
Frequently Asked Questions
Q1: What is the maximum altitude for standard outdoor installation?
Standard units are rated for altitudes up to 1000m. Higher altitude configurations are available upon request. Contact our engineering team to specify your exact elevation for factory verification.
Q2: Can this cast-resin voltage transformer operate in sub-zero temperatures?
Yes, the standard ambient temperature operating range is -5°C to +40°C. The epoxy resin insulation ensures reliable performance in these conditions. Confirm extreme climate requirements with our sales team before ordering.
Q3: Which international standards does this 10kV voltage transformer comply with?
The JSZW2-10W complies with GB20840.3-2013 and IEC61869-3:2011 standards. It features a three-phase epoxy resin cast design specifically rated for 10kV systems. Factory calibration and testing ensure strict adherence to these specifications.
Q4: What is the maximum rated output for this three-phase transformer?
The maximum output capacity is 600 VA. It supports multiple accuracy classes, including 0.2 and 0.5, with corresponding rated outputs. Specify your required accuracy class and burden when requesting a quote.
Q5: How much routine maintenance does the epoxy resin design require?
Minimal maintenance is required due to the robust epoxy resin cast insulation. It is specifically designed for outdoor switchgear and distribution points. Ensure the neutral terminal is connected per local electrical codes during installation.
Q6: Where is this outdoor three-phase voltage transformer typically applied?
It is primarily used in outdoor switchgear, substations, and distribution points for 10kV systems. The cast-resin insulation provides reliable performance for outdoor service conditions.
Q7: Is the JSZW2-10W a single-phase or three-phase voltage transformer?
It is a three-phase voltage transformer designed for 10kV systems. The unit operates at standard 50Hz or 60Hz frequencies. Please confirm your system frequency and phase requirements during the initial inquiry.