Glassvia Power Bureau’s wide range current transformer Needs and RECT Series Solutions

As the Fibre Power Authority continues to expand its distribution network, the performance requirements for outdoor current transformers (CTs) are constantly increasing.

To ensure that the distribution system maintains accurate measurement, safe operation, and intelligent management in various environments, the need for high-performance CTs is becoming increasingly urgent.

Based on the actual application scenarios of power bureaus, our RECT series wide range current transformer are an ideal choice due to their high precision, high reliability, strong weather resistance and metering-grade characteristics.

Why does the Glassvia Power Authority need a high-performance outdoor CT scanner

Outdoor CTs play a crucial role in metering, protection, and telemetry within power systems. The Glassvia Power Bureau placed particular emphasis on high accuracy, weather resistance, short-circuit withstand capability, and intelligent integration during the selection process. The RECT series excels in all these aspects.

Ultra-high precision metering – the first choice for billing applications

The RECT series is based on the 0.3 Metering Class and has passed type testing in an ILAC-accredited laboratory to ensure stable accuracy even in harsh environments.

Extended Range Advantage:
Products maintain high accuracy within a range of 1%–150% of rated current.

RECT Series

It significantly outperforms the conventional 5%–100% range requirements of traditional CTs—making it particularly suitable for the typical “frequent fluctuations from light to heavy load” operating conditions of the Glassvia Power Bureau.

High-precision core design
with low-loss core and high-quality winding structure effectively improves measurement stability and reduces error drift.

One-piece high-quality iron core

Suitable for billing systems:
The RECT series can be directly used for electricity billing in outdoor metering scenarios and is suitable for mainstream power distribution circuits such as 100/5A~800/5A.

1.Highly weather-resistant design – specially designed for outdoor environments

Many of the power lines of the Glassvia Electricity Authority are located in open, coastal, high-humidity, and high-temperature-difference areas, so the weather resistance of outdoor CTs must be reliable.

The RECT series features:

IP66/IP67 protection rating, suitable for rainy season and sandy environments.

UV-resistant anti-aging shell, will not crack even after prolonged sun exposure.

Resistant to salt spray corrosion, suitable for coastal and high-humidity areas.

Wide temperature range design: Long-term operation within –40℃ ~ +55℃

These designs ensure that the CT can operate stably outdoors for a long time without measurement errors or insulation aging due to environmental degradation.

III. Strong Short-Circuit Withstand Capability – No Pressure on Protection Level Requirements

RECT employs a high-quality iron core and copper winding structure, possessing high thermal and dynamic current stability capabilities, and can withstand short-circuit impacts in power distribution lines, ensuring:

The CT does not saturate due to large fault current.

Secondary side safety without loss of control

The risk of malfunction of the protection device has been greatly reduced.

Compliant with international standards – compatible with power bureau technical systems

The RECT series meets the following international standards:

IEEE C57.13 standard (international mainstream standard for metrology-grade CT)

The laboratory is ILAC certified, indicating its high level of authority.

Rated voltage up to 0.72kV

Suitable for 50Hz/60Hz power grids

This means that the RECT series can be seamlessly connected to both new and renovation projects by the power bureau.

1.Intelligent Data Integration – Supporting Future Power Grid Construction

To meet the growing needs of the Vlasvia Power Authority for distribution automation and remote monitoring, the RECT series can be provided on demand:

Standard secondary output (5A / 1A)

Supports digital communication: RS485 / Modbus (optional)

Remote real-time monitoring

Line loss statistics and load analysis

It can be connected to SCADA and intelligent operation and maintenance systems.

To achieve the upgrade from “traditional metering” to “visualized digital power grid”.

1.Optimized structure, making installation and maintenance simpler.

The RECT series features a unibody, lightweight design for easy and quick installation.

Multiple window diameters are available: 38mm / 66mm / 78mm

RECT Series

The secondary side is equipped with a short-circuit device and a sealable terminal cover for enhanced safety.

Supports multiple installation methods including pole mounting, wall mounting, and flange fixing.

Modular structure reduces maintenance difficulty and cost

Comparison of the core advantages of RECT series wide range current transformer scanners

characteristic	RECT Series Advantages	Value to the power bureau
Measurement accuracy	0.3 grade measurement accuracy, 1%–150% extended measurement range	Accurate billing, reduced errors and malfunctions
Protection level	IP66 / IP67 + UV anti-aging + salt spray tolerance	Adapting to the complex outdoor environment of glass
Short circuit withstand capability	High thermal stability & dynamic stability design	Ensure that the CT is not damaged and the protection system does not trip malfunctions in the event of a system failure.
Intelligent	Supports digital communication and remote monitoring	In conjunction with the construction of smart grids
Installation and maintenance	Lightweight design + sealable terminal cover + shorting device	Improve installation efficiency and reduce on-site maintenance costs
International Certification	IEEE C57.13, ILAC laboratory testing	Meets the requirements of foreign power bureau bidding/standards

Why did the Glassvia Power Authority choose the RECT series

Typical challenges faced by the Glass-Vivia power sector include:

Long power distribution lines and large load fluctuations require extended range CTs.

The climate is highly variable (strong sunlight, high humidity, monsoon, coastal salt spray).

High accuracy is required for billing and line loss statistics.

The continuous advancement of power distribution automation necessitates intelligent data interfaces.

The RECT series is designed specifically for these needs:

Its high precision, high reliability, strong weather resistance, rich specifications, and intelligent communication capabilities make it the best CT solution for outdoor power distribution networks.

Whether it’s medium-voltage power distribution lines or smart power distribution upgrade projects, the RECT series can provide power bureaus with stable, accurate, and safe current measurement support.

Compay：HEYI Electrical Co., Ltd.

Brand: HEYI/ASCT

Contact: Bethy

E-mail: heyi@heyiele.com             

Tel: 86-13968747975

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