High-Voltage 33kV Dry-Type Voltage Transformer from China Suppliers | Factory Precision Measurement Solutions
Product Parameter
Parameter |
Specification |
| Rated Voltage | 33kV |
| Rated Secondary Voltage | 100V / 110V |
| Frequency | 50Hz |
| Accuracy Class | 0.2 / 0.5 / 1.0 |
| Rated Burden | 10VA – 300VA |
| Insulation Class | Class F / Class H |
| Cooling Method | Natural air cooling |
| Partial Discharge | ≤5 pC |
| Power Frequency Withstand Voltage | 70kV (1 min) |
| Lightning Impulse Withstand Voltage | 170kV |
| Installation Type | Indoor (panel-mounted) |
| Standards | IEC 61869 / GB 1207 |
Product Applications
The 33kV dry-type voltage transformer is widely used in high-voltage substations for accurate voltage measurement and relay protection. It converts 33kV primary voltage into standardized 100V/110V outputs for monitoring systems. With accuracy up to Class 0.2, it ensures precise data acquisition. Its high insulation strength supports reliable operation in critical utility-grade power networks.
This transformer is ideal for large industrial facilities such as steel plants, cement factories, and petrochemical operations. It provides stable voltage signals for control and protection systems under continuous load conditions. Designed to maintain performance within ±0.5% accuracy deviation, it ensures stable monitoring in environments with fluctuating electrical demand up to 300VA burden capacity.
The transformer is widely used in renewable energy systems such as wind farms, solar plants, and large infrastructure projects including railways and ports. It ensures accurate voltage measurement under variable load conditions. With operational reliability in environments from -40°C to +45°C, it supports stable performance in outdoor and remote installations with high electrical demand.
Product Advantages
Ensures stable and continuous electrical performance for industrial and distribution systems.
Compact finished design allows easy installation in limited electrical spaces.
Produced under strict factory control to ensure stable product quality.
Designed for long-term use with dependable performance in daily operation.
Stable structure ensures consistent operation under normal working conditions.
Suitable for different installation layouts and electrical system configurations.
Key Benefits
The 33kV Dry-Type Voltage Transformer is a high-reliability, utility-grade instrument transformer designed for demanding medium- and high-voltage systems. Its advanced insulation technology, strong dielectric performance, and compact structure make it ideal for substations, industrial facilities, and renewable energy applications.
With long service life, high accuracy, and maintenance-free operation, it provides a dependable solution for modern power measurement and protection systems.
FAQ
What makes a 33kV voltage transformer different from lower voltage models?
It is designed with higher insulation and dielectric strength to safely handle higher voltage levels in utility systems.
Can it be used in outdoor installations?
It is primarily designed for indoor use but can be integrated into outdoor systems when installed in protective enclosures.
What is the typical accuracy level of this transformer?
It supports high-precision classes such as 0.2, suitable for metering and protection applications.
How does it perform under fluctuating loads?
It maintains stable voltage output and measurement accuracy even under variable electrical load conditions.
What ensures long-term reliability?
Epoxy resin insulation, low partial discharge, and high-quality core materials ensure stable long-term performance.