Overview
The JDZW2-10 and JDZW-10R series are precision electromagnetic voltage transformers designed for accurate voltage measurement, energy metering, and relay protection in 10kV outdoor AC power systems. Featuring a pillar-type structure with fully cast epoxy resin insulation, these units deliver exceptional resistance to UV radiation, electrical arcing, and environmental aging. Their compact, lightweight design allows flexible installation in any orientation, while secondary terminals include protective covers with anti-theft mechanisms for enhanced security.
Engineered specifically for ungrounded neutral systems operating at 50 Hz or 60 Hz, these transformers ensure reliable performance across diverse outdoor distribution environments with minimal maintenance requirements.
Key Ratings Snapshot
| Parameter | Value |
|---|---|
| System voltage class | 10 kV (outdoor medium-voltage) |
| Rated frequency | 50 Hz or 60 Hz |
| Rated voltage ratio | 10000/100 V, 10000/220 V, 10000/100/100 V, 10000/100/220 V |
| Accuracy classes | Metering: 0.2, 0.5, 1st Class, 3rd Class / Dual core: 0.2/0.2, 0.5/0.5, 0.2/0.5 / Protection: 6P |
| Rated output | 40 VA to 240 VA (single), 25/25 VA to 40/40 VA (dual) |
| Maximum output | 100 VA (single), up to 300/800 VA (dual) |
| Insulation level | 12/42/75 kV (Um / AC withstand / Lightning impulse) |
| Ambient temperature | -25 deg C to +40 deg C |
| Vibration resistance | 0.4g direct vibration test capability |
| Pollution class | Class II |
Model Designation
- J: Voltage transformer (VT/PT)
- D: Outdoor configuration
- Z: Epoxy resin cast insulation
- W: Pillar-type structure
- 10: Voltage class (10 kV)
- R: Reinforced design variant (JDZW-10R)
- 2: Design series iteration (JDZW2-10)
Construction
The fully cast epoxy resin construction with pillar-type design ensures superior outdoor performance, offering high resistance to UV exposure, electrical arcing, moisture ingress, contamination, and long-term environmental aging. The sealed housing provides complete protection against harsh weather conditions, enabling reliable operation over extended service life with minimal maintenance.
A steel channel base with four mounting holes allows secure attachment to various support structures. Secondary terminals are equipped with protective covers featuring integrated anti-theft mechanisms and convenient wiring access holes. The compact and lightweight form factor supports installation in any orientation, providing exceptional flexibility for outdoor distribution network layouts.
Technical Parameters
Service Conditions
- Installation environment: Outdoor, ungrounded neutral systems
- Altitude: <= 2000 m above sea level
- Ambient temperature: -25 deg C to +40 deg C
- Vibration resistance: Withstands 0.4g direct vibration test
- Environmental protection: UV resistant, arc resistant, aging resistant
- Pollution class: Class II per applicable standards
Technical Data
| Model | Rated Voltage Ratio (V) |
Rated Secondary Output (VA) | Limit Output (VA) |
Rated Insulation Level (kV) |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.2 | 0.5 | 1st Class |
3rd Class |
0.2/0.2 | 0.5/ 0.5 |
6P | ||||
| 0.2/0.5 | ||||||||||
| JDZW2-10 JDZW-10R |
10000/100 | 40 | 80 | 200 | 240 | / | / | / | 100 | 12/42/75 |
| 10000/220 | ||||||||||
| 10000/100/100 | / | / | / | / | 25/25 | 40/40 | / | 300/300 | ||
| 10000/100/220 | 25/25 | 40/40 | / | 300/800 | ||||||
Installation & Wiring
Installation Diagram
The JDZW2-10 and JDZW-10R transformers feature flexible mounting due to their compact, lightweight pillar design. Secure installation is achieved using the four mounting holes on the steel channel base. Primary connections follow standard 10kV outdoor utility practices, while secondary wiring is accessed through designated holes in the terminal cover. Anti-theft mechanisms must be engaged after wiring completion.
Outline Dimensions
| Dimension | Value (mm) |
|---|---|
| Total height | Approx. 580 |
| Base width | Approx. 160 |
| Base length | Approx. 220 |
| Mounting hole spacing (L x W) | 190 x 130 |
| Bolt hole diameter | phi 14 |
| Creepage distance | >= 375 |
Selection & FAQs
Selection Guide
- Select voltage ratio (e.g., 10000/100V) based on system voltage and secondary equipment requirements.
- Choose accuracy class (0.2 for revenue metering, 0.5 for general metering, 6P for protection) per application needs.
- Ensure rated output (VA) exceeds total connected burden including instrument loads and cable losses.
- For combined metering and protection functions, specify dual-output models (e.g., 10000/100/100V).
- Verify ambient conditions (temperature, altitude <= 2000 m, pollution class II) match service ratings.
Frequently Asked Questions
Q1: Is this resin insulated transformer suitable for outdoor UV exposure?
Yes, it is designed for outdoor installation. The pillar resin insulation provides UV, arc, and aging resistance. Contact us for specific pollution class requirements.
Q2: What neutral system configurations are compatible with this 10kV transformer?
It is specifically designed for ungrounded neutral systems. The 10000/100V ratio suits standard 10kV distribution networks. Verify system grounding with our engineering team.
Q3: Which accuracy classes and secondary output ratings are available?
The JDZW2-10 offers 0.2, 0.5, 1st, and 3rd accuracy classes. Secondary outputs range from 40VA to 240VA with a 100VA limit output. Request the full datasheet for exact burden specifications.
Q4: Are these voltage transformers tested for high-altitude installations?
Yes, they are rated for altitudes up to 2000 meters above sea level. For projects exceeding this elevation, derating factors apply. Please confirm your site altitude during inquiry.
Q5: How are custom voltage ratios and special packaging handled?
Standard models feature a 10000/100V ratio. Custom ratios and specific export packaging are available subject to factory confirmation. Contact our sales team to discuss your project requirements.
Q6: What applications is this pillar type voltage transformer used for?
It is primarily used for voltage measurement and protection in 10kV outdoor switchgear. The JDZW2-10 model ensures reliable performance in Class II pollution environments. Standard configurations are maintained in our primary manufacturing facility.