Low Voltage Switch Equipment LOW VOLTAGE SWITCHGEAR

Anhui Wanxiang Electric Power Equipment Co., Ltd. Anhui Wanxiang Electric Power Equipment Co. LTD

GGD Mould

AC Low Voltage Power Switch Box

summary :

The GGD-type AC low-voltage distribution cabinet is designed for power distribution systems in power plants, substations, industrial plants, and other electrical user sites operating on AC 50Hz, with a rated working voltage of 380V and a rated working current up to 3,150A; it is used for the conversion, distribution, and control of electrical energy for power supply, lighting, and other distribution applications. The GGD-type AC low-voltage distribution cabinet is a new type of low-voltage distribution cabinet developed in accordance with the requirements of the competent authorities under the Ministry of Energy, as well as the needs of various power users and design departments, adhering to the principles of safety, economy, rationality, and reliability. This product features high breaking capacity, excellent dynamic and thermal stability, flexible electrical configurations, ease of assembly, comprehensive series availability, strong practicality, innovative structure, and a high protection rating; it can serve as a next-generation replacement for low-voltage complete switchgear. The GGD-type AC low-voltage distribution cabinet complies with standards such as IEC 439 "Complete Switchgear and Control Equipment for Low Voltage" and GB/T 7251 "Complete Switchgear for Low Voltage".

Product Model Description:

service condition :

1、 The ambient air temperature shall not exceed + 4 0 ~ ^ { \circ } \mathsf C nor be lower than \overline { { - 5 } } ^ { \circ } \mathsf { C } ; the average temperature over a 24-hour period shall not exceed + 3 5 ^ { \circ } \mathsf C ;

2、For indoor installation and use, the altitude of the installation site shall not exceed 2,000 m;

3、 The relative humidity of the surrounding air shall not exceed 50% at the maximum temperature of + 4 0 ^ { \circ } \mathsf { C } ; at lower temperatures, a higher relative humidity is permissible (e.g., 90% at 2 0 ^ { \circ } \mathsf { C } ) consideration should be given to the potential occurrence of condensation due to temperature fluctuations.

4、During equipment installation, the inclination relative to the vertical plane shall not exceed 5 ^ { \circ } ;

5、 The equipment shall be installed in a location free from severe vibration or impact, as well as in an environment where it will not expose electrical components to corrosion;

6、If the user has specific requirements, they may negotiate with the manufacturer to resolve them.

behaviour of electricity :

Basic electrical parameters

GCS Mould

Low-Voltage Withdrawable Switchgear

summary :

The GCS-type low-voltage withdrawable switchgear (hereinafter referred to as "the device") is a low-voltage "scanning-type"switchgear designed by a joint design team comprising two ministries, in accordance with the requirements of industry authorities, power consumers, and design units; it is tailored to local conditions, features high technical performance specifications, can meet the demands of the power market, and is capable of competing with existing imported products. This device has already been widely adopted by power consumers.

The GCS equipment is suitable for power distribution systems in various industries, including power plants, petroleum, chemical, metallurgical, textile, and high-rise building sectors. For applications in large-scale power plants, petrochemical systems, and other environments with high levels of automation that require computer interfacing, this low-voltage complete power distribution unit serves as a solution for power generation and supply systems featuring three-phase AC with a frequency of 50 (60) Hz, a rated operating voltage of 380 V (400 V) or 660 V, and a rated current of 4,000 A or less, particularly for power distribution, centralized motor control, and reactive power compensation purposes.

Product Model Description:

performance index :

The device's design complies with the following standards:

1、IEC 439-1: "Low-voltage switchgear and controlgear"

2、GB/7251 "Low-voltage switchgear"

primary structure :

The main frame is constructed using 8MF-type open-section steel sections; both sides of these steel sections feature mounting holes with module sizes of 20 mm, 100 mm, and 9.2 mm, enabling flexible and convenient internal installation. The assembly configuration of the main frame can be designed in two ways: a fully assembled structure or a partially welded structure (comprising the side frames and crossbeams), allowing users to choose based on their requirements. The various functional rooms within the equipment are mutually isolated, with each room categorized as a functional unit room, a busbar room, or a cable room; the functions of each room are relatively independent.

essential parameter :

GCK Mould

Low-Voltage Withdrawable Switchgear

summary :

The GCK low-voltage withdrawable switchgear consists of two components: the Power Distribution Center (PC) cabinet and the Motor Control Center (MCC). It is designed for power users such as power plants, substations, and industrial/mining enterprises for use in distribution systems operating at 50 Hz AC with a maximum working voltage of up to 660 V and a maximum working current of up to 3,150 A; it serves as an electrical energy conversion, distribution, and control solution for power distribution, motor control, and lighting applications.

Product Model Description:

architectural feature :

The basic cabinet frame of this product series adopts a modular prefabricated structure; all structural components of the cabinet frame are interconnected to form a basic framework via screws, after which doors, partition plates, partition boards, drawers, mounting brackets, busbars, and electrical components—amongother parts—are added as needed to assemble a complete switchgear cabinet. This cabinet features the following characteristics:

1、 The frame is constructed using shaped steel sections, employs 3D corner plate positioning, and utilizes bolted connections without welding, thereby avoiding welding deformation and stress while improving installation accuracy. The mounting holes for the frame and its components vary according to the module E = 20 mm.

2、 The internal structural components are galvanized; the exterior is first pickled and phosphated, followed by electrostatic epoxy powder coating.

service condition :

1、Altitude does not exceed 2,000 m;

2、The ambient air temperature shall not exceed + 4 0 ^ { \circ } \mathsf C , the average temperature over a 24-hour period shall not exceed + 3 5 ^ { \circ } \mathsf C , and the ambient air temperature shall not be lower than - 5 0 ~ ^ { \circ } \mathsf { C } :

3、Atmospheric conditions: The air must be clean; the relative humidity shall not exceed 50% at a temperature of + 4 0 ^ { \circ } { \mathsf { C } } ; at lower temperatures, higher relative humidity is permissible—for example, 90% at + 2 0 ^ { \circ } \mathsf C ;

4、 Locations where there are no fire or explosion hazards, severe contamination, chemical corrosion, or intense vibration;

5、The inclination relative to the vertical plane shall not exceed 5°;

6、This product is suitable for transportation and storage at temperatures ranging from * 2 5 ^ { \circ } \mathsf { C } to +55°C; it should not be exposed to temperatures exceeding + 7 0 ^ { \circ } \mathsf C for any short period of time (not exceeding 24 hours).

Note:If the above usage conditions cannot be met, the user shall submit a request to the manufacturer at the time of ordering for negotiation and resolution.

essential parameter :

MNS Mould

Low-Voltage Withdrawable Switchgear

summary :

This series of low-voltage withdrawable switchgear is a modular cabinet type assembled in the factory using standard modules (FBA), with technology that has reached internationally advanced levels. This series of low-voltage withdrawable switchgear is suitable for power plants, substations, petrochemical facilities, metallurgical and steel rolling plants, transportation and energy sectors, light industry and textile enterprises, residential communities, high-rise buildings, and other sites, serving as power conversion, distribution, and control equipment for power systems operating at AC 50-60 Hz and with a rated working voltage of AC 660 V or lower. This equipment complies with the national technical standards GB72511 "Low-voltage complete switchgear" and JB/T9961"Low-voltage withdrawable complete switchgear,"as well as international technical standards such as IEC 439-1 and VDE 0660 Part 5.

Product Model Description:

service condition :

1、The ambient air temperature shall not exceed + 4 0 ^ { \circ } \mathsf C , shall not be lower than - 5 ^ { \circ } \mathsf { C } , and its average temperature over a 24-hour period shall not exceed + 3 5 ^ { \circ } \mathsf C ;

2、 Atmospheric conditions shall be clean, with a relative humidity not exceeding 50% at the maximum temperature of 4 0 ^ { \circ } { \mathsf { C } } ; at lower temperatures, higher relative humidity is permissible—for example, 90% at + 2 0 ^ { \circ } \mathsf { C } - \mathsf { b u t } consideration must be given to the possibility that temperature fluctuations may inadvertently induce condensation;

3、The altitude shall not exceed 2,000 m;

4、This device is suitable for transportation and storage processes within the temperature range 0 ^ { 4 - 2 5 ^ { \circ } C } to T { } ^ { \mathsf { F S F } ^ { \circ } } { \mathsf { C } } ; it can withstand temperatures up to + 7 0 ^ { \circ } \mathsf C for short durations (not exceeding 24 hours); under these extreme temperature conditions, the device shall not suffer any irreversible damage.

Furthermore, it should function properly under normal operating conditions;

5、 If the above operating conditions cannot be met, the matter shall be resolved through negotiation between the user and the manufacturer;

6、When this equipment is used on offshore oil drilling platforms and nuclear power plants, a separate technical agreement shall be signed.

essential parameter :

GGJ Mould

Low-Voltage Reactive Power Intelligent Compensation Device

summary :

This device can effectively improve the power factor of electrical loads, reduce line losses, and enhance the actual load capacity of transformers, thereby achieving significant energy-saving effects. Additionally, by incorporating specific reactors within the system, it can effectively prevent harmonic amplification and efficiently absorb most harmonic currents, ensuring that both the total harmonic distortion (THD) limit and the harmonic current content limits comply with national standards, thus accomplishing the objective of harmonic mitigation. In contrast, using conventional contactors to switch capacitor banks would result in substantial surge currents, slow compensation response times, high maintenance costs, and a short service life. Therefore, we recommend that users prioritize the use of dynamic reactive power compensation devices in the following scenarios—such as low-voltage power grids in substations of industrial and mining enterprises, production workshops, and civil buildings—particularly for transmission and distribution systems where loads are subject to frequent changes and reactive power is unstable. This product complies with standards such as GB/T 15576 "Low-voltage complete set reactive power compensation equipment" and IEC 60439 "Low-voltage complete sets of switching and control equipment."

Product Model Description:

Operating environment conditions:

1、Ambient temperature: -5°C to + 4 0 ^ { \circ } { \mathsf { C } } ;

2、Relative humidity: not exceeding 90% (at 20°C);

3、Altitude: not exceeding 2,000 m;

4、The surrounding environment poses no explosion risk; there are no gases capable of damaging or corroding metal; there is no conductive dust; the installation site should not be subject to severe vibration; and there should be no exposure to rain or snow.

Product Features:

1、Versatile performance: This compensation cabinet can be configured with various types of cabinets from both domestic and international manufacturers, such as MNS, GCK, and GGD;

2、 Capacitor compensation offers a variety of flexible configurations: Y-type compensation, Atype compensation, and Y+A combined compensation;

3、Versatile communication options: Equipped with RS-232/RS-485 communication interfaces, as well as wireless data transmission modules or GPRS modules for long-distance communication;

4、Accurate and safe control: employs zero-crossing voltage triggering; during energization, no surge current occurs during zero-crossing disconnection; and no high voltage is generated during interruption;

5、Long service life: With no maintenance required, it offers a service life of over 100,000 hours.

essential parameter :

JP Mould

Outdoor Integrated Distribution Cabinet (Compensation, Control, Terminal, Lighting)

summary :

The JP series outdoor integrated distribution cabinet integrates multiple functions—including metering, outgoing circuits, and reactive power compensation—into a single unit, making it an ideal outdoor integrated distribution solution. It features protection against short circuits, overloads, overvoltages, and earth leakage, while offering a compact size, an aesthetically pleasing appearance, and excellent cost-effectiveness. When installed on the poles of pole-mounted transformers, this product represents an ideal distribution solution for the modernization of urban and rural power grids.

Product Model Description:

service condition :

1、Environmental temperature: -25°C to +40°C;

2、Relative air humidity: daily average shall not exceed 90%, and monthly average shall not exceed
90%;

3、Altitude: not greater than 2000 m;

4、To be installed in locations free from severe vibration or impact, as well as free from corrosive gases.

design feature :

The cabinet structure is available in either vertical or horizontal configurations. The outer shell is fabricated from high-quality 2 mm stainless steel plates using a multi-stage folding process (or alternatively, utilizing a stainless steel double-layer composite panel with a honeycomb structure, which offers flame-retardant, environmentally friendly, thermal insulation, and condensation-resistant properties); this component employs a specialized stainless steel welding technique, resulting in exceptional structural integrity after molding, with a mirror-like smooth surface free of weld marks; the interior features installed beams and slabs treated with hot-dip galvanizing to ensure corrosion resistance for up to 20 years; the cabinet features front and rear access doors, facilitating easy operation and maintenance by users. The perimeter of the door is equipped with high-elasticity, age-resistant sealing strips; each door is fitted with both visible and concealed door locks; the visible lock features a rainproof cover designed to prevent clogging and rusting; the metering room is fully enclosed and equipped with a lead-sealing device; the side walls of the enclosure feature cable entry conduits that are rainproof and resistant to foreign objects; the bottom is equipped with ventilation holes and cable exit ports; and the top is equipped with ventilation ducts and a wire mesh, providing waterproofing, rust prevention, dust protection, and foreign object resistance; the protection rating is IP54.

essential parameter :

XL Mould

Summary :

The XL-21 low-voltage power distribution cabinet is suitable for use in power plants and industrial/miningenterprises for power distribution within three-phase four-wire systems with AC voltages up to 500 V. The XL-21 low-voltage power distribution cabinet is designed as an indoor unit for wall-mounted installation, with maintenance accessible from the front panel.

Product Model Description:

design feature :

The XL-21 low-voltage power distribution cabinet is enclosed in design, with its enclosure fabricated from steel plates; the knife switch operating handle is mounted on the upper part of the front right column, enabling the switching of power supply. A voltmeter is installed at the front of the distribution cabinet to indicate the voltage across the busbar. The distribution cabinet features a front door; when this door is opened, all internal equipment becomes fully exposed, facilitating inspection and maintenance. This distribution cabinet incorporates domestically designed components that offer a compact structure, easy maintenance, and flexible circuit configuration options. In addition to incorporating air circuit breakers and fuses for short-circuit protection, the cabinet also includes contactors and thermal relays; the front door can be equipped with operating buttons and indicator lights.

Technical specifications of main equipment:

JXF Mould

Low-Voltage Integrated Distribution Cabinet

summary :

This product is suitable for circuits with an AC frequency of 50 Hz and a rated operating voltage below 500 V. Under special requirements, the protection rating can reach IP55; the enclosure features knock-out holes on both the top and bottom surfaces, and pre-installed mounting openings are available for multi-cable inputs; its maximum rated current capacity reaches 400 A. This model is particularly well-suited for metering and control boxes in industrial and mining facilities, hotels, residential buildings, and other similar applications.

Product Model Description:

Installation method: M - Open
installation; R - Concealed installation;
W - Outdoor enclosure depth (cm),
enclosure width (cm), enclosure height (cm).

Hinge designation: 1 - indicates concealed hinge; 2 – indicates exposed hinge; denotes a protective wall-mounted control box.

Operating environment conditions:

1、Temperature: The ambient air temperature shall not exceed + 4 0 ^ { \circ } \mathsf C , and the lower limit of the ambient air temperature shall not fall below-5°C;

2、 Humidity: When the ambient temperature is +40°C, the relative humidity of the air shall not exceed 50%; at lower temperatures, higher relative humidity may be permitted; for example, at T + 2 0 ^ { \circ } \mathsf C , the relative humidity may reach 90%.

3、 Altitude: The installation site's altitude shall not exceed 2,000 m; high-altitude products are available upon customization;

4、Installation Category: Class III;

5、Pollution level: Level 3;

6、Rated operating voltage: 230V,400V;

7、Rated operating voltage:400V;

8、Rated short-circuit sectioning capacity: 80 kA;

9、Enclosure protection rating: IP55;

Installation dimensions (mm):

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Anhui Wanxiang Electric Power Equipment Co., Ltd.