HEYI Electric’s RECT Extended Range Current Transformer is designed and manufactured for use in places exposed to natural environments (sun, rain, wind, sand, ice and snow, temperature changes, etc.), and has a series of significant advantages and characteristics:

 

 

1.Excellent environmental tolerance:

Strong weather resistance: The shell and insulation material ( cast with epoxy resin ) have excellent resistance to UV rays, aging and ozone, and are not prone to deterioration and cracking after long-term exposure to sunlight.

 

High waterproof and dustproof level: Usually has a high level of IP protection (such as IP65, IP66, IP67, IP68), which can effectively prevent the intrusion of rain, dust and sand, and ensure that the internal electrical components can work normally in bad weather.

 

Wide temperature range: Designed to withstand a wider range of ambient temperatures (such as -25 °C to + 40 °C or higher), with insulation heat resistance rating reaching 110°C, adapting to extreme climates of severe cold and heat.

 

Strong anti-pollution flashover capability: The insulator is designed with a longer creepage distance and a larger shed structure (or anti-pollution flashover coating), which can effectively suppress surface leakage current, prevent pollution flashover accidents, and ensure high-voltage insulation performance in humid and dirty (industrial dust, salt spray, chemical pollutants, etc.) environments.

 

 

HEYI RECT Extended Range Current Transformer

 

HEYI Electric’s RECT products passed the CNAS test

 

2.High reliability and long life:

Solid structure: The overall structure is solidly designed to withstand certain mechanical stresses (such as wind loads, minor collisions), the internal components are reliably fixed, and the seismic performance is good.

Excellent sealing performance: The entire shell is cast with epoxy resin to ensure internal dryness and prevent moisture intrusion that may cause insulation degradation or corrosion of internal components.

Material stability: Select materials with stable performance in outdoor environments to ensure long-term reliability and service life

 

3.Excellent electrical performance:

High insulation strength: Even under harsh conditions of humidity and pollution, it can maintain sufficiently high insulation strength to ensure equipment and personal safety.

Stable measurement accuracy: The design takes into account the impact of temperature changes on magnetic properties and electronic components, and can maintain the specified accuracy level within the operating temperature range ( our products can reach 0.15S level ).

Good anti-interference ability: In complex outdoor electromagnetic environments (such as nearby high-voltage lines and lightning activities), it has good anti-electromagnetic interference ability and the output signal is stable and reliable.

 

 

HEYI RECT accuracy can reach 0.15S level

 

4.Easy maintenance and safety:

Maintenance-free or low-maintenance: Thanks to excellent sealing and weather-resistant design, usually only minimal maintenance is required (such as regular appearance inspections), reducing operation and maintenance costs and difficulty.

 

Fully enclosed structure: The primary and secondary circuits are usually completely enclosed in an insulating casing, so operators do not need to directly contact the high-voltage parts, which improves the safety of installation, maintenance and use.

 

Anti-electric shock design: The secondary wiring terminals have protective covers and comply with safety regulations.

 

 

 

HEYI’s complete production process

 

5.Strong adaptability and flexible installation:

Diverse installation methods: The design supports a variety of installation methods (such as pillar installation, hanging installation, through installation, embedded installation, etc.), adapting to different outdoor brackets, frames or switch equipment.

    

Easy to expand: Future expansion needs may be taken into consideration during design (such as reserved interfaces, modular design) to facilitate system expansion.

 

In summary, the core advantage of outdoor expansion current transformer lies in its “reinforced” design for harsh outdoor environments:

 

Rugged and durable: Resistant to physical and chemical environmental attack.

Reliable sealing: prevents the intrusion of moisture and dust.

Stable insulation: ensures high voltage safety under various pollution and climatic conditions.

Safe and convenient: ensure personnel safety and reduce maintenance burden.

Performance guarantee: Maintain the accuracy and stability required for measurement and protection under a wide range of environmental conditions.

 

These features make the outdoor expansion current transformer an ideal choice for key measurement and protection equipment that needs to operate reliably, safely and for a long time directly in the natural environment, such as outdoor substations, transmission lines, new energy stations (wind power, photovoltaic), and railway traction power supply in power systems.

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