Guangdong Aerpai Power Electric Power Technology Co.,Ltd.

28/05/2026

10kV Distribution Network “Cable Watchdog”

It features high-precision wide-range zero-sequence current detection, suitable for both
high-current and low-current grounding systems.In arc-suppression coil grounded
systems, the grounding current can be as low as 2 A;in low-resistance grounded
systems, the grounding current can reach hundreds of amperes.
· Fast tripping response, acting prior to substation protection.The time delay of substation
zero-sequence protection is about 200– 500 ms.The sectionalizer cabinet is required to
complete zero-sequence detection, comparison and interruption within 200 ms.
· Simple and practical communication mode, reliable fault location method. Since the
substation cannot reclose before the fault point is identified, the sectionalizer cabinet shall
send fault information quickly and reliably after detecting and tripping to isolate phase-tophase short-circuit faults, enabling the substation to promptly restore power supply to nonfault lines.
· Operating Power Supply Solution.In the event of a phase-to-phase short-circuit fault, the
sectionalizer cabinet must complete the automatic tripping of the fault section under line
power-off conditions.

26/05/2026

BC-40.5 Fully Insulated & Hermetically
Sealed Compact Gas-insulated Switchgear

Safe and Reliable: SF6 gas with excellent insulation and arc-extinguishing performance is adopted; dielectric strength is twice that of air; non-toxic, odorless, non-flammable with excellent cooling performance, ensuring fast and reliable arc extinction.

· Compact & Lightweight: Superior SF6 insulation enables smaller size, lighter weight and more compact structure, saving space and
land occupation.

· Advanced & Flexible: Adopts international advanced design, production and testing technologies; simple structure, flexible operation and reliable interlocking; equipped with advanced sensing technology and latest microcomputer protection devices to meet
diversified user demands.

· Full Modular & Fully Sealed & Fully Expandable: New-generation compact modular switchgear. Gas tank is welded with 3mm high
quality stainless steel. All high-voltage live parts (vacuum switch, load switch, busbar) are sealed in SF6-filled tank. Unit and
common-bus modular structures are available; each module can be expanded freely left and right.

· All-weather Adaptable: Hermetic structure; primary conductive system operates in SF6 dielectric environment, free from external
disturbances (condensation, fouling, salt spray, small animals, chemicals, etc.).Truly maintenance-free, suitable for harsh
environments and strong water immersion resistance.


-insulated Switchgear

www.gdaep.com
[email protected]

26/05/2026

Switchgear plays a crucial role in modern electrical systems, ensuring safe, efficient, and reliable power distribution across different environments. As industries and infrastructure evolve, understanding the differences between low voltage (LV) switchgear and medium voltage (MV) switchgear becomes essential for engineers, facility managers, and project planners. In this article, we’ll explore the characteristics, applications, and distinctions between these two categories, helping you choose the most suitable solution for your needs.

Low voltage switchgear refers to electrical equipment designed for systems operating at voltages up to 1,000 volts. It is widely used in residential, commercial, and light industrial settings to protect and control electrical circuits. Typical low voltage switchgear includes circuit breakers, contactors, fuses, relays, and low voltage switchboards that manage electrical loads within safe limits.
This type of switchgear is known for its compact size, user-friendly interface, and ease of maintenance. It ensures the safety of people and equipment by automatically disconnecting power during overloads, short circuits, or electrical faults.

Medium voltage switchgear operates in the voltage range between 1,000 and 36,000 volts. It is essential for MV distribution systems in large industrial facilities, commercial complexes, substations, and power generation plants. Medium voltage switchgear includes components such as vacuum circuit breakers, gas-insulated switchgear (GIS), current and voltage transformers, and advanced protective relays. These systems are designed to handle higher electrical loads, offer advanced protection features, and often integrate with automated control and monitoring systems.

Understanding the differences between low and medium voltage switchgear is essential for designing a reliable and efficient electrical system. While low voltage switchgear is ideal for compact, low-demand applications with easy maintenance, medium voltage switchgear is necessary for larger, more complex systems that require advanced protection and automation.

voltage switchgear
voltage switchgear
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26/05/2026

Intelligent power equipment-
The power transmission and distribution industry has a complete industrial chain and rich product categories, forming an industrial structure system of high voltage, intelligence, power electronics, and modern services. It focuses on new technologies and products of smart grids, promotes the integration of new energy and flexible transmission; Developing online monitoring, distributed energy, and energy storage technologies; Develop intelligent substations, fully leverage their own advantages, and seize market opportunities; Build a comprehensive solution service platform for integrated services such as smart grid system integration, engineering general contracting, complete equipment, maintenance, and electricity sales.

Research and development of intelligent power equipment-
Continuously introducing new technologies such as artificial intelligence, big data, and computing power to improve the intelligence level and performance of devices.

Power equipment manufacturing-
ncluding the manufacturing and production of power transmission and distribution equipment, as well as electricity consumption and electrical equipment, while adopting environmentally friendly materials, energy-saving technologies, and circular production methods to reduce the impact on the environment.

Integration and installation-
Combine components according to specific functions and requirements to form a complete power system, install it in the designated location, and conduct debugging and testing to ensure the normal operation of the equipment.

Power/electromechanical engineering contracting-
The company has an independent power design and installation engineering division, which possesses extensive technical expertise and management experience. From project planning, design, procurement, construction, to acceptance and delivery, Aerpai is capable of providing professional project management services.








www.gdaep.com

26/05/2026

Industrial and commercial energy storage solutions-
Realize green, low-carbon, and sustainable development

Aerpai and Southern Power Grid jointly establish an intelligent energy storage terminal product research and development center, launching a series of industrial and commercial energy storage products and one-stop solutions.Flexibly matching various industrial and commercial scenarios to meet the practical needs of various application scenarios such as peak shaving and valley filling, improving consumption, delaying expansion, demand side response, and backup power supply.

Shortening the investment return cycle by 3 years can lead to a return on investment.
Extremely energy-efficient, safe and reliable operation for over 12 years.
Minimalist installation, flexible land use, cost reduction, and website construction.





-24KVMediumVoltagePowerEquipment



Website: www.gdaep.com
Email: [email protected]

26/05/2026

Guangdong Aerpai Power Technology Co., Ltd.--Established in 2000 with a registered capital of RMB 100 million, boasts two major science and technology innovation parks. Its headquarters and production base are situated at the Alpine Energy Storage Technology Center, No. 1 Fuxing Road, Songshan Lake Park, Dongguan City, while its research and development center is located at the Alpine (Guangdong) Electric Power Science Research Institute, No. 1 R&D First Road, Songshan Lake Park, Dongguan City. The company is renowned in the industry as a leading manufacturer of power equipment and insulation materials, as well as a service provider of smart energy solutions. It specializes in the research, development, production, technical services, and general contracting of projects related to new materials, new energy, various energy storage systems, and the integration of primary traditional equipment with secondary intelligent systems for voltages below 220kV, encompassing power, electromechanical, new energy, and intelligent engineering.











Website: www.gdaep.com
Email: [email protected]

23/05/2026

Guangdong Aerpai Power Technology Co., Ltd. Focus on main products include industrial-grade energy storage systems, commercial and industrial energy storage systems, intelligent converters, boost inverter-integrated machines, primary and secondary cabinets, primary and secondary integrated ring main units/pole-mounted circuit breakers, high and low voltage switchgear assemblies, distribution automation terminals, charging piles, new power materials, and other series. These products are widely applicable to all scenarios on the power supply side, grid side, and user side of the national power energy system.




Email: [email protected]
Website: www.gdaep.com
TEL: (0769)26623186

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