Overview
The JDZW32-10R is an outdoor Silicone Rubber and cast-resin voltage transformer rated for 10kV medium-voltage distribution systems. It features a silicone rubber housing that provides superior insulation performance, excellent hydrophobicity, and high resistance to environmental pollution.
This transformer supports accuracy classes of 0.2 and 0.5, making it suitable for both metering and protection applications in demanding outdoor environments. It complies with relevant IEC and GB standards for outdoor electromagnetic voltage transformers and is engineered for maintenance-free operation in coastal, industrial, and other high-pollution areas.
Key Ratings Snapshot
| Parameter | Rating |
|---|---|
| System Voltage | 10 kV |
| Rated Primary Voltage | 10 / √3 kV |
| Rated Secondary Voltage | 100 / √3 V |
| Accuracy Class (Metering) | 0.2 |
| Accuracy Class (Protection) | 0.5 |
| Rated Output (VA) | 30 (0.2), 50 (0.5) |
| Insulation Material | Silicone Rubber |
| Installation Type | Outdoor |
| Phase Configuration | Single-phase |
| Construction Type | Cast-resin, dry-type |
| Pollution Degree | High (suitable for Class IV) |
| Maintenance Requirement | Maintenance-free |
Construction
The JDZW32-10R features a robust cast-resin core encapsulated within a high-grade silicone rubber housing. This construction eliminates internal air gaps and provides uniform electric field distribution, enhancing dielectric strength and long-term reliability. The silicone rubber material offers excellent hydrophobic properties, preventing surface moisture film formation and reducing the risk of flashover in contaminated or humid conditions. The compact two-bushing design ensures easy mounting on poles or substation structures while minimizing space requirements. All metallic components are corrosion-resistant, ensuring durability in harsh outdoor environments without the need for periodic maintenance.
Technical Parameters
Service Conditions
- Installation position: Outdoor switchgear, substations, or distribution points
- Ambient temperature: -25°C to +40°C
- Altitude: ≤ 1000m (standard), higher altitude available on request
- Insulation: Silicone rubber cast
- Frequency: 50Hz or 60Hz
- Grounding: Connect neutral terminal per local electrical codes
- Maintenance: Minimal maintenance required (silicone rubber design)
Technical Parameters
The JDZW32-10R is an outdoor cast-resin voltage transformer designed for 10kV systems. It features silicone rubber insulation, operates within a temperature range of -25°C to +40°C, and is suitable for installations up to 1000m altitude (higher on request). The unit complies with GB1207 standards and offers multiple accuracy classes with rated outputs of 50 VA and 100 VA.
| 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 JDZW32-10R is designed for outdoor installation in switchgear or substations with adequate ventilation. Its compact two-bushing front view and standard side profile allow for space-efficient mounting while providing clear access to the primary bushing and secondary terminal box.
Wiring Diagram
Connect the primary terminals to the 10kV system and the secondary terminals to meters and protection devices. Ensure the secondary circuit is properly grounded. Terminal markings follow standard conventions for voltage transformers, with clear identification of polarity and rated output connections as specified in GB1207.
Selection & FAQs
Selection Guide
- Select for 10kV system voltage with 12/42/75kV insulation level.
- Choose accuracy class 0.2 for high-precision metering or 0.5 for standard metering applications.
- Pick rated output of 50VA or 100VA based on the total burden of connected metering and protection devices.
- Specify operating frequency as either 50Hz or 60Hz to match your power system.
- Confirm outdoor installation suitability, especially in harsh environments like coastal or industrial areas.
Frequently Asked Questions
Q1: How does high altitude affect this outdoor voltage transformer?
Standard models are rated for altitudes up to 1000m. For installations above this limit, custom design adjustments are required. Contact our engineering team for altitude-specific specifications.
Q2: Which accuracy class is suitable for 10kV metering applications?
The JDZW32-10R offers specific accuracy classes for metering (1a-1b) and power supply (2a-2b). Select the appropriate class based on your 50 VA or 100 VA rated output. Consult us for exact class selection.
Q3: Why use silicone rubber insulation for outdoor switchgear?
Silicone rubber provides superior UV resistance and hydrophobic properties compared to traditional cast resins. This ensures minimal maintenance and reliable performance in harsh outdoor environments.
Q4: What international standards does this 10kV transformer comply with?
The unit is manufactured in compliance with GB1207 standards. For IEC or other specific international certifications, please provide your project requirements for factory confirmation.
Q5: Can this transformer operate on 60Hz power systems?
Yes, the JDZW32-10R is designed for both 50Hz and 60Hz frequencies. Specify your required system frequency during the inquiry to ensure correct factory configuration.
Q6: Where is the JDZW32-10R voltage transformer typically applied?
It is primarily used in outdoor switchgear, substations, and distribution points for 10kV systems. It provides voltage measurement and relay protection signals for grid monitoring.
Q7: Are there specific temperature limits for outdoor installation?
The standard ambient temperature range is -25°C to +40°C. If your project requires operation outside these limits, contact our technical department for customized thermal solutions.