Modern power networks demand high measurement accuracy and resistance to environmental conditions. The VOL-40.5 voltage transformers are an optimal solution for outdoor pole-mounted installations, designed to operate in challenging environments. They provide reliable phase-to-phase voltage measurement in medium-voltage networks, offering a combination of high performance and durability.

Main Features and Benefits

VOL-40.5 transformers are manufactured using advanced materials like hydrophobic cycloaliphatic epoxy (HCEP). This material offers excellent protection against arcing, ozone, and UV radiation, making it ideal for harsh environments. Additionally, HCEP has hydrophobic properties, significantly reducing the risk of overvoltage when operating in humid conditions.

The VOL-40.5 voltage transformers offer the following key advantages:

• High Resistance to Environmental Factors: Resistant to aggressive environments and corrosion, ensuring a long service life.
• Reduced Weight: Design optimization has resulted in significant weight reduction without compromising performance.
• Reliability in Harsh Conditions: With an operating temperature range from -40°C to +40°C and resistance to contaminants, these transformers are versatile for various climatic zones.

Purpose and Application Scope

VOL-40.5 transformers are designed to measure phase-to-phase voltage in networks up to 24 kV. Typically connected in a ‘V’ configuration, they are the primary solution for outdoor power systems. Models with one or two secondary windings are available, allowing customization to meet specific user requirements. During operation, one terminal of the secondary winding must be grounded to ensure safe operation.

Design Features and Materials

VOL-40.5 transformers feature a robust design with high dielectric insulation. The primary and secondary windings are made using specialized winding techniques to ensure uniform voltage distribution and minimize losses. The windings and core are encapsulated in HCEP, providing excellent protection against mechanical damage and environmental effects.

Installation and Connection

Installing VOL-40.5 transformers is straightforward, thanks to a convenient base plate made of corrosion-resistant aluminum. The removable junction box, rated at IP 54, simplifies installation and maintenance. The secondary terminals can accommodate conductors with cross-sections ranging from 2.5 mm² to 6 mm², offering flexibility in wiring. The terminals are galvanically coated, ensuring corrosion resistance and reliable connections.

Operating Conditions and Additional Features

VOL-40.5 transformers are designed to operate in environments with dust, smoke, corrosive gases, or high humidity. They can be used in conditions ranging from -40°C to +40°C and altitudes up to 1000 meters above sea level. Special models can be produced for operations outside the standard parameters if required.

Warranty and Test Reports

Each transformer undergoes rigorous testing, with the results stored electronically and available to customers upon request. The manufacturer provides a 24-month warranty from the date of commissioning, but no more than 36 months from the date of purchase. The warranty covers manufacturing defects, provided that transportation, storage, and operational guidelines are followed.

VOL-40.5 voltage transformers are an effective solution for outdoor power systems. Combining reliability, durability, and ease of installation, they are the ideal choice for professionals seeking dependable equipment for harsh environments.

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