Overview
The JDZW4-10 is a single-phase outdoor voltage transformer rated for 10kV medium-voltage distribution systems. It features epoxy resin cast insulation, offering robust performance in harsh environmental conditions with excellent resistance to moisture, UV radiation, and temperature fluctuations.
Designed for precision measurement and protection applications, the JDZW4-10 provides 0.2 accuracy class and a 20VA rated output, meeting standard requirements for metering and relay input. Its compact, maintenance-free construction simplifies installation in outdoor switchgear, substations, and industrial power networks where reliable voltage sensing is critical.
Key Ratings Snapshot
| Parameter | Rating |
|---|---|
| System Voltage | 10kV |
| Insulation Medium | Epoxy resin cast |
| Phase Configuration | Single-phase |
| Accuracy Class | 0.2 |
| Rated Output | 20VA |
| Application Type | Outdoor |
| Primary Voltage | 10kV |
| Secondary Voltage | 100V (standard) |
| Frequency | 50Hz / 60Hz |
| Insulation Level | 12kV (max system) |
| Installation Position | Vertical |
| Maintenance Requirement | Maintenance-free |
Construction
The JDZW4-10 features a fully cast-resin construction, encapsulating all active components in high-grade epoxy resin. This monolithic insulation structure eliminates air gaps and prevents moisture ingress, ensuring long-term dielectric stability. The housing is UV-resistant and designed to withstand thermal cycling, pollution, and condensation typical in outdoor installations. Terminals are corrosion-protected and clearly marked for primary and secondary connections, supporting secure and reliable wiring in field applications.
Technical Parameters
Service Conditions
- Installation position: Outdoor switchgear, substations, or distribution points
- Ambient temperature: -20°C to +40°C
- Altitude: ≤ 1000m (standard)
- Insulation: Epoxy resin cast
- Frequency: 50Hz or 60Hz
- Maintenance: Minimal maintenance required
Technical Parameters
The JDZW4-10 is an outdoor epoxy resin cast voltage transformer designed for 10kV systems. It operates within a temperature range of -20°C to +40°C, suitable for installations up to 1000m altitude, and complies with IEC 61869-1 standard.
| Rated
Voltage |
Accuracy class / Rated output (VA) | Max.
output) |
||||
|---|---|---|---|---|---|---|
| 1a-1b (Metering or Monitoring) | 2a-2b (Power supply) | |||||
| Output
voltage |
Accuracy
class |
Rated
output (VA) |
Output
voltage (V) |
Rated
output (VA) |
||
| 10KV | 100V | 0.2/0.5 | 10/60 | 100/200/220 | 500 | 750VA |
Installation & Wiring
Installation Diagram
The JDZ-10 is installed using two mounting feet secured to U-channel brackets on outdoor switchgear or substation structures. Ensure adequate ventilation and accessibility for wiring connections.
Wiring Diagram
Primary terminal A connects to the system voltage line, while neutral terminal N is connected to system ground. Secondary terminals supply output to metering and protection devices. Confirm the voltage ratio matches system specifications before energizing.
Selection & FAQs
Selection Guide
- Select for 10kV system voltage applications.
- Choose 0.2 accuracy class for high-precision metering requirements.
- Specify rated output of 20VA based on connected burden needs.
- Confirm operating frequency: 50Hz or 60Hz.
- Ensure installation environment is outdoor-rated.
- Provide required quantity when placing order.
Frequently Asked Questions
Q1: How does altitude affect the installation of this transformer?
Yes, it is suitable for standard elevations. The rated altitude is ≤1000m with an ambient temperature of -20°C to +40°C. Contact our engineers for derating details above 1000m.
Q2: Which accuracy class should be selected for metering applications?
The 0.2 class is optimal for precise billing. It provides a rated output of 10VA, while the 0.5 class offers 60VA for general monitoring. Confirm your exact metering needs with our technical team.
Q3: What is the operating temperature range for outdoor installation?
It operates reliably in extreme climates. The ambient temperature range is -20°C to +40°C, supported by durable epoxy resin cast insulation. Request the specific environmental test reports for your region.
Q4: Are these voltage transformers compliant with international IEC standards?
Yes, they meet global requirements. The JDZW4-10 fully complies with the IEC 61869-1 standard for 10kV systems. Please request the type test certificates from our sales department.
Q5: Can the secondary output voltage be customized for specific relays?
Customization is available for secondary windings. The power supply output can be configured to 100V, 200V, or 220V. Specify your exact relay voltage requirements during the initial inquiry.
Q6: Why choose epoxy resin cast insulation for outdoor switchgear?
It is designed for harsh external environments. The epoxy resin casting ensures high mechanical strength and weather resistance for outdoor substations and distribution points. Contact us for project-specific application guidance.