High Quality Voltage Transformers for Industrial Power Systems

Voltage transformers (PT/VT) are critical precision devices in power systems used for voltage conversion and electrical isolation. They convert high-voltage grid voltage into standard low-voltage signals recognizable by instruments and control systems. As a leading Chinese manufacturer specializing in the R&D and production of medium- and high-voltage transformers, Usune integrates R&D, production, and sales, focusing on core needs such as grid voltage measurement, fault early warning, and electrical safety isolation. The company's full range of indoor and outdoor voltage transformers covers mainstream voltage levels in the industry, fully adapting to engineering standards for urban power grids, industrial power distribution, and outdoor overhead lines, making it a professional and reliable supplier for global power equipment procurement.

Core Product Functions

1. Precise Voltage Conversion and Data Acquisition

Accurately converts primary high voltage to standard secondary low voltage, providing precise data for grid metering, energy consumption statistics, operation monitoring, and relay protection, ensuring the accuracy and validity of grid operation data.

2. High-Voltage Electrical Safety Isolation

Achieves electrical isolation between the high-voltage main circuit and low-voltage control and instrumentation circuits, completely isolating high-voltage risks and comprehensively protecting the personal safety of maintenance personnel and the safety of secondary precision instruments and equipment.

3. Supporting Power Grid Operation and Fault Diagnosis

Providing stable and standard voltage signals for long-term operation, offering data support for daily power grid dispatching, load regulation, fault location and handling, and improving the intelligent operation and maintenance level of the power grid.

Product Classification and Characteristics

1. Indoor Voltage Transformers

Indoor voltage transformers are designed for enclosed indoor environments such as substations, distribution rooms, and distribution buildings. The products feature a compact integrated structure, small size, and light weight, saving installation space and facilitating rapid construction and subsequent maintenance. The equipment casing is made of high-quality epoxy resin insulation material, offering high mechanical strength and excellent dustproof and moisture-proof performance, suitable for dry and enclosed indoor environments. It can operate stably for a long time in 10kV-35kV indoor power distribution systems, unaffected by external environmental corrosion.

2. Outdoor Voltage Transformers

Outdoor voltage transformers are suitable for outdoor substations, overhead transmission lines, outdoor power facilities, and other open-air operation scenarios. The product is equipped with a ceramic or high-temperature silicone rubber insulated shell, offering excellent waterproof, anti-aging, anti-flashover, and weather-resistant properties. It can adapt to complex and harsh outdoor conditions such as rain, snow, frost, high temperatures, and strong winds, and is widely used in 35kV-220kV outdoor power transmission and distribution projects. It effectively resists outdoor environmental corrosion, reduces equipment failure rates, and ensures the continuous and stable operation of outdoor power facilities throughout the year.

General Advantages

1. High Accuracy and Stable Output

Utilizing precision winding technology and optimized magnetic circuit design, the measurement accuracy is high, with no voltage drift during long-term operation. The secondary voltage output is stable, meeting domestic and international power grid metering accuracy standards.

2. Excellent Insulation and Strong Overload Capacity

Employing high-quality insulation materials and mature processes, the equipment boasts excellent voltage resistance and insulation, resisting instantaneous voltage fluctuations in the power grid and exhibiting outstanding overload capacity.

3. Simple Operation and Maintenance and Longer Lifespan

The internal structure is simple and reliable, with a low failure rate. It requires no frequent maintenance, significantly reducing the later-stage operation and maintenance costs of power projects and extending the equipment's service life.

4. Wide Application Range

Covering all mainstream voltage levels of 10kV, 35kV, 110kV, and 220kV, meeting the construction and operation needs of various power transmission and distribution projects.

FAQ

Q1: What are the core application differences between Usune indoor and outdoor voltage transformers?

The core differences lie in the applicable environment and insulation configuration. The indoor model uses an epoxy resin shell, primarily for dust and moisture protection, and is only suitable for dry, enclosed indoor environments such as distribution rooms and switchgear; it cannot be used outdoors for extended periods. The outdoor model is equipped with porcelain or high-temperature silicone rubber insulation, offering superior weather resistance, flashover protection, and aging resistance. It is specifically designed for complex outdoor conditions such as outdoor substations and overhead lines, enabling stable all-weather outdoor operation.

Q2: What voltage levels do Usune voltage transformers support, and what scenarios are they suitable for?

The product range comprehensively covers mainstream medium and high voltage levels of 10kV, 35kV, 110kV, and 220kV. Indoor products are suitable for enclosed environments such as enterprise power distribution rooms, community power distribution rooms, and indoor switch cabinets; outdoor products are widely used in outdoor substations, overhead transmission lines, and industrial and mining outdoor power facilities, fully adaptable to various power projects such as urban power grid transmission, industrial power distribution, and rural power grid upgrades.

Q3: How to ensure the long-term accuracy and stability of Usune voltage transformers?

First, the products are manufactured in strict accordance with national power industry standards, employing precision magnetic circuit design and high-purity conductive materials to ensure measurement accuracy from the source. Second, excellent insulation and overload performance can withstand instantaneous voltage surges and environmental interference. Simultaneously, the optimized integrated structure reduces component wear and the probability of failure, resulting in extremely low performance degradation. Combined with standardized installation and routine, simple maintenance, the equipment can maintain accurate and stable output for a long time, achieving long-term reliable operation.