Electrical Equipment

It is a complete set of distribution equipment for a 3.6-12kV three-phase AC 50Hz single busbar and single busbar segmented system. Mainly used for power plants, system substations, small and medium-sized generator power transmission, industrial and mining enterprise distribution, and secondary substations of power systems for receiving and transmitting electricity, as well as starting large high voltage motors, for control, protection, and monitoring purposes.  

• Successfully passed multiple tests and demonstrations, including condensation,  temperature rise, mechanical operation, service life, insulation, short-circuit breaking and making, internal combustion arc, etc., to meet the diverse needs of different users for this type of switchgear.
• Ensure that wheelbarrows of the same specifications can be freely interchanged. 

• The grounding switch adopts a quick closing mechanism with short-circuit closing capability. A mechanical lock is installed on the connecting rod of the operating mechanism to prevent the circuit breaker handcart from being pushed into the circuit breaker or accidentally entering the live interval when the grounding switch is in the closing state. It can also be equipped with a locking electromagnet to achieve electrical interlocking between the grounding switch and other cabinets. 

• The valve driving mechanism can be equipped with an electrical locking device to prevent exposure of live static contacts due to misoperation when the circuit breaker handcart is removed from the position, ensuring personal and equipment safety.
• Priority is given to the use of micro-protection devices to achieve perfect coordination between the main circuit and the control circuit. Relay protection devices can also be used to achieve intelligent operation of this type of switch cabinet. 

• This model of switchgear can also use a front-mounted current transformer, making equipment maintenance and repair more convenient. The current transformer can be directly pulled out from the front, truly achieving wall and back-to-back installation, reducing footprint.

KYN61-40.5 armored movable metal-enclosed switchgear is suitable for three-phase AC 50Hz, rated voltage 40.5kV single busbar, and single busbar segmented power systems. It is mainly used for receiving and distributing electrical energy in power plants, substations, industrial and mining enterprises, and high-rise buildings, and controls protects, and monitors the circuit to meet the requirements of IEC 298, DL/T404, and other standards.  

• The "five prevention" functions are complete, and the operation is safe and reliable. There is a mechanical interlocking device between the handcart, circuit breaker, grounding switch, and rear door of the cabinet to prevent accidental operation. At the same time, a padlock can be installed on the valve-pushing mechanism to prevent accidents caused by non-professionals accidentally opening the valve when the handcart exits the cabinet. 

• By adopting composite insulation methods, optimizing electrode shapes, and improving electric field distribution, the entire cabinet structure is compact, effectively reducing the occupied area.
• Circuit breakers, grounding switches, and other operations can be carried out under the condition of cabinet door closure, fully achieving door closure operation. 

• The cabinet body is made of high-strength and corrosion-resistant imported aluminum zinc-coated sheet metal, which is a CNC sheet metal that is processed and formed. It is connected by high-strength bolts, nuts, and rivet nuts. The entire cabinet body is welded free, with precise dimensions and good stiffness, ensuring the interchangeability of the handcart.
• Using a ball screw propulsion mechanism, the handcart can be pushed (exited) effortlessly and smoothly.  

• Easy to operate and maintain, users only need to master the operation method proficiently through the user manual, understand its precautions,  and do not need specialized training. 

The HXGN17-12 air ring main unit is a three-phase AC high-voltage electrical device with a rated voltage of 3.6-12kV and a rated frequency of 50Hz. It adopts an AC high-voltage load switch with static contact insulation cover and an AC high-voltage load switch fuse combination device as the main switch, mainly used for a three-phase AC ring network,  terminal distribution network, and industrial electrical equipment, to receive, and distribute electrical energy and protect. 

• The main switch adopts a load switch with a static contact insulation cover or a load switch fuse combination electrical device. This ring main cabinet is divided into a busbar room, a switch room, and an instrument room, eliminating the need for phase partition boards and break plug boards, which can prevent arc light short circuit accidents inside the cabinet and ensure the personal safety of personnel during maintenance and replacement of fuses.

• The main switch can be selected as a combination of a compressed air load switch or vacuum load switch and its fuse according to user requirements,  while the external dimensions of the switchgear can be unchanged.  
• The FN12-12 load switch selected is a compressed air arc extinguishing structure, with a rated breaking current of more than 100 times, ensuring safe and reliable arc extinguishing performance. 

• The operating mechanism can be manual or electric, making it easy to achieve the three remote requirements of the power system.  
• It is equipped with a comprehensive device to prevent electrical misoperation and meet the "five prevention" requirements. 

Suitable for three-phase AC 50, 60Hz, rated voltage 1140V and below, rated current 4000A and below distribution systems, used for energy conversion, distribution, and control. Widely used in power plants, substations, petrochemicals, metallurgical steel rolling, light industry textiles, industrial and mining enterprises, and high-rise buildings. The product has passed CCC certification, complies with GB7251.1 and JB/T9661 standards, and has undergone long-term trial operation assessment.

• The main cabinet body adopts the form of a universal cabinet, and the structure is assembled by partial welding of 8MF cold-formed steel, with components according to module principles, designed with 20 mounting holes and high versatility.
• The cabinet surface paint has good adhesion and texture. The entire cabinet is in a matte color scheme, avoiding dazzling effects and creating a comfortable visual environment for the on-duty personnel.  

• When designing, full consideration is given to the heat dissipation problem during the cabinet operation. There are multiple heat dissipation holes at the upper and lower ends of the cabinet. When the cabinet components heat up, the heat rises and is discharged through the upper slot holes, while cold air continuously replenishes through the lower slot holes, forming a natural ventilation duct from the bottom to the top of the sealed cabinet, achieving the purpose of heat dissipation. 

• The top cover of the cabinet can be removed as needed to facilitate the installation and adjustment of the main busbar on-site.
• Using the golden ratio method to design the segmentation dimensions of each part, makes the entire cabinet aesthetically pleasing and refreshing.
• The protection level of the cabinet is IP30, and it can also be selected between IP20 to IP40 according to user needs.

Suitable for three-phase AC 50Hz, 60Hz, rated voltage 660V and below, rated current 4000A and below in three-phase four-wire or three-phase five-wire power systems, used for energy conversion, distribution, and control. Widely used in power plants, substations, petrochemicals, metallurgical steel rolling, industrial and mining enterprises, etc. The product has passed CCC  certification, complies with GB 7251.1 and JB/T 9661 standards, and has undergone long-term trial operation assessment. 

• Compact structure: Install more functional units in a smaller space, and the five drawers can be assembled individually or mixed in one cabinet.
• Strong universality and flexible assembly of components: It is made by fastening and connecting 8MF profiles with a modulus of 20mm or C profiles with a modulus of 25mm and self-made modular components, which can meet the needs of various structural forms, protection levels, and usage environments, and avoid welding deformation. 

• The entire cabinet frame structure has undergone galvanizing and passivation treatment, ensuring the continuity of grounding.
• The drawer unit adopts a center-oriented design, with strong interchangeability, tight contact, fit, and high-quality reliability. 

• Safety: A large number of high-strength flame-retardant engineering plastic components are used to enhance protective safety performance effectively.
• Usability: Easy to install and use, without the need for special and complex tools. 

Suitable for three-phase AC 50Hz, 60Hz, rated voltage 660V and below, rated current 4000A and below in three-phase four-wire or three-phase five-wire power systems, used for energy conversion, distribution, and control. Widely applicable to power plants, substations, petrochemicals, metallurgical steel rolling, industrial and mining enterprises, etc. The product has passed CCC certification, complies with GB7251.1 and JB/T9661 standards, and has undergone long-term trial operation assessment. 

• Compact structure: Install more functional units in a smaller space, and the four types of drawers can be assembled individually or mixed in one cabinet.
• Strong universality and flexible assembly of components: made by fastening and connecting 25mm C-shaped profiles and self-made modular components, it can meet the needs of various structural forms, protection levels, and usage environments, and avoid welding deformation.

• The entire cabinet frame structure has undergone galvanizing and passivation treatment, ensuring grounding continuity.
• Safety: Many high-strength flame-retardant engineering plastic components are used to enhance protective safety performance effectively.
• Usability: Easy to install and use, without the need for special and complex tools.

Suitable for three-phase AC 50, 60Hz, rated voltage 660V and below, rated current 4000A and below in three-phase four-wire or three-phase five-wire power systems, used for energy conversion, distribution, and control. Widely used in power distribution, motor control centers, power plants, substations, petrochemicals, metallurgy, mining enterprises, etc. The product has passed

CCC certification complies with GB7251.1, VDE660, IEC439, etc., and has undergone long-term trial operation assessment. 

• Compact structure: Install more functional units in a smaller space, and the five drawers can be assembled individually or mixed in one cabinet.
• Strong universality and flexible assembly of components: made by fastening and connecting 25mm C-shaped profiles and self-made modular components, it can meet the needs of various structural forms, protection levels, and usage environments, and avoid welding deformation.

• Adopting standard module design: cabinet frame structures and drawer units can be composed of different schemes.
• Safety: A large number of high-strength flame-retardant engineering plastic components are used to enhance protective safety performance effectively.
• Usability: Easy to install and use, without the need for special and complex tools. 

It is a new type of outdoor reactive power compensation comprehensive cabinet designed for urban/rural power grid renovation, industrial enterprises, etc. It has multiple functions including energy distribution, control, protection, reactive power compensation, and energy metering. The product has a novel structure, a high protection level, has passed CCC certification, and complies with the provisions of GB7251.1, GB/T 15576, etc. An excellent low-voltage device for renovating power grids. 

The JP-type outdoor comprehensive distribution box can have three basic functions: distribution, compensation, and metering. Users can choose according to their needs.

Choose a different plan, and the specific plan number is as follows:  

01 - Distribution+Compensation+Metering

02 - Distribution+Compensation

03 - Distribution+Metering

04 - Compensation+Metering

05 - Distribution

06 - Metering

07 - Compensation 

• Timely and rapid response, good compensation effect, reliable operation, and the ability to add leakage protectors according to user needs.
• Protection functions: functions such as overvoltage, overload, Undervoltage, undercurrent, short circuit, phase loss, zero sequences exceeding the limit, etc. 

• Automatic operation function: Power outage exit, automatic recovery with a delay of 10 seconds after power transmission.
• Can increase the power factor of the power grid to 0.95 or above. 

Suitable for controlling and distributing electrical equipment in circuits with AC 50Hz and rated voltage of 220/380V, as well as providing overload, overvoltage, short circuit, and leakage protection for circuits. This series of distribution boxes is mainly used in civil buildings, industrial and mining enterprises, high-rise buildings, residential areas, and other places. 

The box is made of high-quality cold-rolled steel plate or stainless steel plate, the surface is sprayed with electrostatic powder. This series can be designed and assembled into various control function distribution boxes based on the model, specifications, and quantity of electrical components, making the structure more compact and beautiful.

Executive Standard: GB7251.3-2006

Protection Level: IP20~IP55

Installation method: Wall-mounted exposed installation, embedded wall concealed installation. 

• Environmental temperature: -5°C to +40°C, and the average temperature within 24 hours does not exceed +35C 
• Altitude: Not exceeding 2000m
• Relative humidity: When the surrounding air humidity is +40℃, it shall not exceed 50%; At lower humidity, there can be higher relative humidity (such as 90% at +20C), allowing for moderate frosting due to temperature changes.

• The inclination angle between the equipment and the vertical surface during installation should not exceed 5°. The equipment should be installed in a place without severe frost, impact, and corrosion. Note: If the above conditions are exceeded, you can negotiate with our company. 

This is a complete set of power equipment that integrates station AC power supply, DC operating power supply, power AC uninterruptible power supply, communication DC converter power supply (DC-DC) and other devices, shares DC or AC operating power supply batteries and monitoring devices, and achieves centralized power supply and unified monitoring.

The intelligent integrated power supply system is a combination of a DC operating power supply as the core, a power dedicated UPS or INV, and a communication DC-DC power supply, all of which are called intelligent integrated power supply systems. 

• Unified centralized power supply: The intelligent integrated power supply system optimizes and combines the system to achieve centralized screen rouping to supply power to the entire station's power control system, meeting the needs of turnkey engineering for power equipment integration. 

• Unified information management: The intelligent integrated power supply system provides a complete AC/DC monitoring and management solution through centralized monitoring devices, achieving full parameter monitoring and management of AC/DC control power supply in substations. 

• Unified equipment maintenance:  The intelligent integrated power supply system achieves convenient maintenance by integrating maintenance work interfaces,  greatly reducing the failure rate and maintenance costs of equipment operation. 

JHDQDY-GZDW high-frequency switch DC power supply panel is a new type of DC power supply device. It is suitable for power plants, substations, and high-rise buildings as a self-contained power supply, and is suitable for 10-500KV substations and small and medium-sized power plants. It can be used as an operating power supply and control power supply for high-voltage switchgear, relay protection, automatic devices, accident lighting, etc. 

• The charger can perform main charging, balanced charging, and float charging, achieving multiple functions and improving the reliability of the product.
• The power inlet side adopts an AC dual power automatic switching device.
• Equipped with a busbar voltage regulation device, which can achieve manual/automatic adjustment.

• There is a floating charge current detection device in the main circuit, which can be displayed with a digital meter, making it easy to see the accurate main and floating charge currents.
• The whole machine can output signal contacts such as high and low bus voltage, bus grounding, and charger faults to the outside world. 

• Any functional unit can exit the system for maintenance.
• The busbar is equipped with a complete detection device. 

This is a new-generation product developed based on the advantages of similar products at home and abroad, combined with the current distribution practice. The product meets the requirements of national standards: GB 17467 "High Voltage/Low Voltage Prefabricated Substation" and IEC 1330. It is a complete set of movable transformer and distribution equipment composed of high-voltage switchgear, transformer, low-voltage distribution cabinet, and casing, which is pre-assembled by the factory. 

It has many advantages: it is complete, small, and has a compact structure. It can reach deep into the load center, improve power supply quality, reduce line losses, shorten the power transmission cycle, be placed in various locations, adapt to different environments, install easily, operate safely and reliably, requires low investment, takes effect quickly, and does not need dedicated personnel to operate. Its main use is to replace traditional civil engineering substations.  

• Urban and rural power grid renovation and construction, enterprise distribution, urban public distribution, residential communities, parks, highways, and other outdoor places. The altitude does not exceed 2000m.
• The ambient temperature shall not exceed +40C and shall not be lower than -259C.
• Places without conductive dust, corrosive gases, and explosion hazards.
• Outdoor wind speed does not exceed 35m/s.
• Relative humidity not exceeding 90% (+25C)

• The installation site shall have no severe vibration or turbulence, and the vertical inclination shall not exceed 5°.
• Earthquake intensity does not exceed 8°; Negotiate with our company to resolve special usage conditions (such as humid tropics and plateau areas) 

• Rated Current: 1250A (10kV), 4000A (0.4kV)
• Rated Voltage: 10kV, 0.4kV
• Rated Frequency: 50Hz 

The XGW-12 series intelligent switching station adopts and draws on advanced foreign technology to install and debug 10kV switchgear, circuit breakers, load switches, current and voltage transformers, 10kV power supply PT, switching station FTU, RTU, communication control terminal (CCU), 10kV metering and automatic meter reading,

UPS power supply and indicator instruments, etc., into a movable, sealed, and moisture-proof stainless steel box, thus achieving the goal of being one in the urban distribution network. The integration and modularization of secondary systems have shortened the construction cycle and greatly improved the reliability of urban power grid operation.

• Environmental temperature: Maximum temperature +709C; Minimum temperature -40°C.
• Relative humidity: The daily average relative humidity shall not exceed 95%, and the monthly average relative humidity shall not exceed 90%.
• The daily average value of saturated steam pressure shall not exceed 2.2kPa, and the monthly average value shall not exceed 1.8kPa. 

• The altitude does not exceed 2000m.
• The surrounding air is not significantly polluted by dust, smoke, corrosive or combustible gases, vapors, or salt mist.
• The external insulation has a pollution resistance level of II, and there is no frequent violent vibration.

• Special usage conditions (such as humid tropics and plateau areas) should be resolved through consultation with our company. 

• Structural form: The box adopts an advanced structural design, with distribution intervals arranged in double rows, sharing a set of main busbars, and the control protection screen and switchgear are placed in separate rooms.
• Form of incoming and outgoing lines: Overhead incoming lines, cable outgoing lines, and cable incoming and outgoing lines.
• Main components: 12kV box type fixed interval ZGN-12.

• The interval is a metal-enclosed structure made of high-quality steel plates. It's divided into different sections the circuit breaker room, cable room, and instrument room. The main busbar room is an independent unit with a shared set of main busbars. The circuit breaker room in the middle of the interval has an advanced and reliable mandatory interlocking design to meet the "five prevention" requirements. The lower part is a cable compartment and can be equipped with live display sensors. 

• Shell: Insulation material is added in the middle of the box wall to prevent water, fire, wind, sand, and corrosion; The pollution level applies to Class 11, the protection level is IP3X, and it can withstand mechanical external force (energy 20J) impact required by the national standard. The top load is ≥ 2500N/m². The appearance is with good insulation performance and equipped with upper and lower ventilation ducts, which can minimize the temperature rise caused by outdoor solar radiation. 

• Auxiliary equipment: Temperature temperature-controlled forced ventilation device and anti-condensation automatic control device can be installed inside the box; Air conditioning can also be installed. It has functions such as over-temperature ventilation, prevention of condensation, and fault alarm. Each independent unit is equipped with a complete live display and lighting system.  

• Microcomputer automation monitoring system: equipped with background parts such as protection screen, DC  screen, AC screen, electricity meter screen, communication screen, etc.  

• Appearance structure: It is a flat top ridge structure, with a movable top cover that can be disassembled and lifted, and has clear directional markings. The overall design is scientific, the layout is reasonable and compact, the functions are complete, safe, and reliable, and the unmanned conditions are achieved. 

Suitable for automatic reactive power tracking and compensation of 10kV (6kV) busbars in 110kV and 35kV double main substations, as well as on load voltage regulation of transformers. Through automatic adjustment of the transformer on load voltage regulation taps and automatic tracking and switching of capacitor banks on 10kV (6kV) busbars, comprehensive control of substation voltage and reactive power is achieved. 

• System rated voltage: 35kV, 10kV, 6kV
• Rated maximum capacity: 10000kVar~25000kVar
• Maximum number of groups: 5-10 Groups
• Insulation resistance of each circuit of the device to ground: ≥ 100
• 1min Power frequency withstand voltage: 42kV

• Anti-interference performance: capable of withstanding attenuation oscillation wave pulse interference tests with a frequency of 1MHz, voltage amplitude of common mode 2500V, and differential mode 1000V, and capable of withstanding severe level I vibration and impact response tests.
• Mechanical Life: 50000 Times
• Protection Level: ≥ IP33

• Environmental temperature: -25~+45C, with an average temperature not exceeding +35°C within 24 hours
• Relative humidity: not exceeding 85%
• Atmospheric pressure: 80-110kPa
• Altitude: ≤2000m
• Wind speed: ≤35m
• Working position: deviating from the reference position by no more than 5°

• Installation site: The use site should not have explosive hazardous media, and the surrounding environment should not contain corrosive metals, gases that damage insulation, or conductive media. It is not allowed to be filled with water vapor or have serious mold.
• Earthquake intensity: ≤8 levels 

• Configure a high-voltage compensation and voltage regulation controller, which automatically tracks the switching of capacitors and controls the on-load voltage regulation of the main transformer to control the power factor and system voltage within the set range.
• Capable of automatically identifying various operating modes suitable for dual main transformer substations.

• By using remote automatic selection switches, various working modes of voltage regulation and compensation can be flexibly selected.
• It can display real-time voltage, current, power factor, reactive power, capacitor switching status, and alarm protection information on the low-voltage side of the main transformer. Power factor COS ≥ 0.96
• It has alarm protection functions for high voltage, low voltage, PT disconnection, mechanism failure, main transformer overcurrent, etc. 

• Equipped with RS-485 or CAN232 high-speed data communication interface, combined with the comprehensive automation system of the substation, it can achieve the "four remote" function.
• Adopting a modular capacitor-specific high-voltage vacuum switch, five units can be installed in one ordinary switchgear shell. 

• It can be flexibly grouped according to the total compensation capacity and can be divided into up to 5 groups with equal capacity. Each group has a maximum capacity of 2000kVar/5000kVar. Automatic cycle switching, switching first, ensuring that all capacitor banks are used promptly, and the same capacitor bank is not switched back on within the discharge time.  

• Configure a WDP capacitor bank microcomputer protection device that can achieve two-stage overcurrent and zero sequence voltage protection functions. When a group malfunctions, it can automatically cut off and lock, without affecting the normal switching of other capacitor groups.  

• Configure reactors with different ratios to limit closing inrush currents and suppress higher-order harmonics. 

With the widespread application of electronic power technology, most current loads are nonlinear. In sectors like petroleum, chemical, metallurgical, steel, coal mines, and rail transit, various rectification equipment, frequency converters, electric arc furnaces, as well as lighting appliances, entertainment facilities, UPS, computers, elevators, air conditioners, etc., are widely used. 

These nonlinear loads generate many harmonic currents and inject them into the power grid, causing voltage distortion in the power grid, this "harmonic pollution" will bring more and more impacts and hazards to the power grid and users. 

The use of active power filters (APF) to control harmonic pollution is currently the most advanced and effective method. APF active power filters can effectively filter out harmonic content in various situations, ensuring the safe operation of the power grid and electrical equipment. 

APF active power filters have been widely used in various industries such as construction, mechanical manufacturing,  electronic information, rail transit, oil and gas extraction, telecommunications, healthcare, finance, scientific research,  airports, new energy, ports, large-scale logistics facilities, and data centers. 

The APF active power filter adopts advanced active control dynamic harmonic injection (OCDI) technology, which obtains the load harmonic current signal by detecting the current waveform in the load circuit. 

After analysis and operation by the digital signal processor DSP, it outputs a series of broadband pulse modulation signals (PWM), drives the IGBT power module to generate current with opposite phase and equal amplitude to the harmonic current, and injects it into the system by connecting the reactor. Two opposite harmonic currents cancel each other out, achieving the goal of filtering out harmonics and purifying electrical energy.  

APF 3L Series

• Can simultaneously filter out harmonic currents of 2-51 times 
• IGBT high-speed switch (20kHz) can quickly filter out harmonics
• Output current response time less than 10ms
• Automatic current limiting to rated current
• Can simultaneously filter and compensate for fundamental reactive power 

• The design selection is simple, only measuring the magnitude of the load harmonic current
• Multiple machines (no more than 5) can be operated in parallel for easy capacity expansion
• Chinese character LCD interface (customizable), easy to operate
• Can achieve remote monitoring 

APF 4L Series

• Can simultaneously filter out all and selected harmonic currents within the range of 2-51 times
• IGBT high-speed switch (20kHz) can quickly filter out harmonics
• Effectively eliminate the neutral line current generated by the third harmonic
• The neutral line filtering capacity is three times that of the phase line
• The response time of output current is less than 10ms 

• Automatically limit the current to the rated current
• Can filter and compensate fundamental wave reactive power at the same time
• The design and selection are simple, and only the magnitude of the load harmonic current needs to be  measured  

• Multiple machines (no more than 5) can be operated in parallel, facilitating capacity expansion
• Chinese character LCD interface (customizable), easy to operate
• Can achieve remote monitoring    

The frequency converter control cabinet (frequency converter electrical control cabinet 1 electrical control cabinet) is composed of an internal frequency converter, peripheral control, protection,  display and other electrical components, and the cabinet body. It is an AC drive and energy-saving device for frequency conversion and speed regulation control of three-phase AC motors (including fans and pumps). 

The frequency converter control cabinet is equipped with products from mfr: Siemens, ABB, Schneider, Fuji, Mitsubishi, Panasonic, Delta, etc. According to the working conditions, AC input reactors, output reactors, DC reactors and EMI filters, braking units, braking resistors, contactors, intermediate relays, thermal relays, programmable controllers  (PLCs), programmable operating terminals (GOTs), electricity meters, cooling fans, etc. can be installed in the frequency conversion cabinet. 

According to the system operating conditions, various control buttons and indicator lights can be set on the frequency conversion cabinet panel, such as forward rotation, reverse rotation, motor speed increase, motor deceleration, jog forward rotation, jog reverse rotation, manual/automatic, emergency stop, frequency conversion/power frequency, PLC control, touch screen, etc. 

The frequency conversion cabinet adopts a closed cabinet structure, the protection level is generally IP20, IP21, IP30, etc. Adopting a profile skeleton, coated with spray paint on the surface, and easy to install in parallel cabinets, the upper end can be equipped with a busbar, and the frequency converter panel can be directly operated from outside the cabinet. Local and remote control or PC 1 PLC communication control can be set as needed, with various intuitive display functions. 

The frequency converter control cabinet can be widely used in various medium voltage motor equipment such as pumps, fans, compressors, rolling mills, injection molding machines, belt conveyors, etc. in the metallurgical, chemical, petroleum, water supply, mining, building materials, and motor industries. The frequency converter cabinet varies greatly depending on its purpose and function and is generally customized according to industrial and mining requirements. 

At present, the relatively standardized ones include constant pressure water supply frequency conversion cabinet (1 control, 1 control, 2 control, 3 control, etc.), escalator frequency conversion control cabinet, central air conditioning circulating water pump frequency conversion cabinet, fan frequency conversion energy-saving cabinet, air compressor constant pressure gas supply system (frequency converter energy-saving soft start control system), etc. 

• The power switch and protection frequency converter cabinet are equipped with a low-voltage molded case circuit breaker connected to the incoming power supply. In addition to completing the connection and disconnection of the circuit, it can also protect the circuit and frequency converter from short circuits and overload and cut off the power supply during maintenance. 

• The start and stop control functions are set on the frequency conversion cabinet panel with frequency conversion start and stop buttons for the operation control of the frequency conversion device, which is convenient for on-site operation.
• The start and stop control functions are set on the frequency conversion cabinet panel with frequency conversion start and stop buttons for the operation control of the frequency conversion device, which is convenient for on-site operation.   

• The panel of the frequency converter cabinet can be equipped with a voltmeter, ammeter, frequency meter, and various indicator lights, such as power indicator, alarm indicator, operation indicator, and power frequency indicator, to achieve monitoring of the input voltage, output current, output frequency, and various working states of the frequency converter.    

• Users can choose a frequency conversion cabinet with backup power frequency switching. When the frequency converter fails, the motor can be switched to the power supply through an automatic control circuit (this method can choose manual 1 automatic, and the power frequency starting device with a power frequency greater than 15kW can be achieved through a soft starter).    

• Multiple control functions can be set on the frequency conversion cabinet panel according to the system working conditions, such as forward rotation, reverse rotation, motor speed increase, motor deceleration, jog forward rotation, jog reverse, manual 1 automatic, emergency stop, frequency conversion/power frequency, PLC control touch screen, etc.     

• Installing the frequency converter inside the frequency converter cabinet can reduce environmental pollution, reduce the risk of electric shock, and provide good protection.
• Install the frequency converter in the frequency conversion cabinet, with the same size and color as other low-voltage distribution cabinets, to maintain coordination, neatness, and aesthetics between the distribution facilities and control devices. 

With the widespread use of various converter devices, frequency converters, arc furnaces, and other nonlinear electrical equipment, their harmonic currents often exceed the allowable values of relevant national standards, seriously affecting the power quality of the power grid. 

The high-voltage reactive power compensation filtering device mainly includes a monotonic harmonic circuit and high pass filtering circuit, installed on the 6kV, 10kV, and 35kV bus side, which can completely or mostly absorb harmonics to maintain a good electrical environment, ensure the safe operation of electrical equipment, and also improve the power factor of the power grid,  receiving good economic benefits. 

• Rated capacity: 50kVar~30000kVar
• Application areas: steel mills, coal, chemical, aluminum plants, electric railways, machinery plants, pump stations, power system converter stations. 

• Advanced simulation systems for system simulation, using precise simulation models to design accurate solutions
• Filter composition: Tuned series filtering circuit or second-order reduced amplitude filtering circuit
• Adopting dedicated filtering reactors  

• Simultaneously provide compensation for power frequency reactive power
• Adopting a microcomputer comprehensive protection system, safe and reliable
• Equipped with harmonic over-limit protection function
• Provide specialized design solutions for different users   

JHMC intensive busbar is fully absorbed with advanced British technology. A new type of busbar product with excellent performance, safety, reliability, and beautiful appearance has been carefully developed based on the domestic electricity environment. This product complies with GB7251 and IEC61439 standards, with a rated working voltage of 1000V, a rated current of 400-6300A, and a tapping current of 16-1250A in the plug-in box.  

The highest protection level is IP66, and it is suitable for various power supply systems such as three-phase three-wire systems, three-phase four-wire systems, and three-phase five-wire systems. It can be widely used in important occasions such as large commercial squares, high-rise buildings, intelligent buildings, industrial factories, hospitals, etc. It is the low-voltage busbar duct system with the best comprehensive performance.

1. Dense overall length (including sockets) with low impedance and low line loss; Small size, occupying less building space; Strong heat dissipation ability, low-temperature rise, and long service life; Conductive heat dissipation, the interception capacity is not affected by the installation position; No hollow structure, no "chimney effect" will be formed. 

2. Both the connector and the socket have an anti-phase error function: ensuring that the phase sequence is correct during installation.  

3. Overall automated riveting: customized imported rivets; High efficiency and short supply cycle; Stable processing and good quality consistency; Strong electrical continuity of the casing.    

4. Various steering units: The line layout can adapt to various on-site environments.     

1. The JHMC busbar adopts aluminum magnesium alloy profiles formed by one-time extrusion as the outer shell. 

2. It has high mechanical strength and strong dynamic stability ability. 

3. Lightweight and easy to install.     

4. Fast heat dissipation, three times the thermal conductivity of steel casing.

5. Weak magnetic materials, effectively avoiding the impact of eddy current and hysteresis losses on the busbar trunking system.   

6. Strong corrosion resistance, even if the coating is damaged, it still has strong anti-corrosion ability and can be tested by adding salt spray for 1800 hours.  

1. The JHMC busbar conductor is a pure copper conductor and imported electrolytic copper is drawn and formed domestically, with a purity of over 99.95% 

2. The JHMC busbar conductor is an alloy conductor, mainly composed of high-purity electrical aluminum bars. After special treatment of its surface, it achieves conductivity performance that cannot be compared to pure aluminum bars. 

3. The JHMC busbar conductor is a copper aluminum composite busbar conductor, with an equivalent cross-sectional flow rate that can reach 86% of the T2 copper busbar, making it the best conductor to replace the copper busbar. 

The conductor is covered with DuPont polyester film as a whole, with each phase wrapped in double layers and up to six layers between phases, ensuring the reliability of insulation. Insulation grade B, heat-resistant to 130℃, single-layer withstand voltage of 10000V or above, is a professional electrical insulation material recommended by the International IEC Association. It has no toxicity and does not produce any halides at high temperatures. 

1. The pins adopt a more stable T-shaped structure, supplemented by highly elastic manganese steel sheets, which can be repeatedly inserted and removed more than 200 times without deformation. 

2. The overall silver plating treatment of the pins effectively reduces contact resistance.

3. The safety interlocking mechanism can ensure that the plug-in box cannot be closed without being installed in place, and the door panel cannot be opened without being opened. 

4. The insertion point adopts an anti-misoperation phase setting.

5. Install socket cover plates to improve the protection level of the socket area.  

1. Adopting double-headed torque memory bolts ensures fast and stable installation, with only a 19mm ordinary wrench required to complete the installation and reliably achieve the predetermined torque.   

2. Adopting a special butterfly-shaped bowl cushion. 

3. The cross-section of the internal conductor of the connector is more than 120% of the cross-section of the busbar body, and the contact surface is double-sided overlapping, effectively reducing the contact resistance. 

4. Save 75% of installation time. 

JHKC air-type busbar is a large-span and high-capacity air-type busbar duct designed for heavy-duty industrial buildings. It has a maximum current of 5000A and strong short-term tolerance, with a single section span of up to 6 meters. It is widely used in large factories such as automobile manufacturing, shipbuilding, machinery manufacturing, and casting, and can also be used for communication in distribution rooms.  

1. Conditions Of Use:

Ambient Temperature: Lower limit -25℃, Upper Limit 40℃

Altitude: ≤2000m

Condensation Conditions: Yes

Basic Earthquake Intensity: 6 Degrees Fortification

Installation Location: Indoors, Outdoors

2. Insulation Resistance: The insulation resistance value of each closed busbar unit should be greater than or equal to 100MΩ

3. Dielectric Strength: Each section of the closed busbar undergoes a 1-minute power frequency dry voltage test before leaving the factory

4. Protection Level: Indoor Type: IP40; Outdoor Type: IP43, IP55

5. Load Performance: Underrated current, the temperature rise of the shell meets the standard requirements of GB763-90 "Heat generation of AC high-voltage electrical appliances during long-term operation"

• Conductors: High-purity electrolytic copper is used as the conductor for air-type bus ducts, and the conductor's surface is fully tinned to improve its resistance to oxidation and corrosion. After processing, PVC pipes are used for heat shrink treatment, and insulation blocks are used to separate the phases from the ground. The copper busbar is double-insulated for protection, greatly improving its insulation performance. It is then enclosed in a grounded metal shell. 

• Shell: The air-type bus duct shell is made of high-quality high-strength cold-rolled steel,  which is cold-rolled into a corrugated structure in one go. It not only has a beautiful and generous appearance but also greatly enhances the mechanical strength of the bus duct and the dynamic and thermal stability of the system, which can completely solve the problem of large-span installation on the construction site.

• Jack: A safety protection shield is designed at the air-type busbar slot. Only when the protective shield is opened can the plug-in box be connected, effectively preventing dust and foreign objects from entering the slot, thereby improving the protection of the busbar lot and preventing misoperation, greatly improving the safety of the busbar.

• Jack: The protection level of the casing is IP40~IP54, which can be flexibly selected according to the installation and use environment to achieve the best economic transmission of the busbar duct.  According to system requirements, plug-in interfaces can be set at any position in the bus duct, which is fast to install, easy to tap, and safe to use.