Which high voltage switchgear manufacturer in Jiangsu, Zhejiang and Shanghai is better?

With the rapid development of society and the rapid development of science and technology, there are more and more solutions, and the functions of components are becoming more and more powerful. Therefore, each company should follow the basic requirements of the design when optimizing the design, and actively use the latest technology, new technology, and new products (upgraded products of the same model) to select the most suitable and user-cost optimization scheme when optimizing the design, and at the same time meet the usability and safety of the components.

High-voltage switchgear refers to the power system power generation, transmission, distribution, power conversion and consumption in the role of on-off, control or protection, high-voltage switchgear according to the voltage level of electrical products, high-voltage isolation switch and grounding switch, high-voltage load switch, high-voltage automatic overlap and sectionalizer, high-voltage operating mechanism, high-voltage explosion-proof power distribution device and high-voltage switchgear and other categories. There is a manufacturer in Jiangsu that has been in production for more than 50 years, Liyang Electric Appliances, Wengfu Chemical, Taizhou Cultural Center, Jingjiang Sports Center, Gushan Wanqing Fertile Land, etc. are all products of Liyang. It provides integrated services for production, installation and after-sales, including scheme design, power supply and installation, installation and construction, acceptance and power-on, after-sales service full tracking, and lifelong maintenance.

High-voltage switchgear.

We need to ensure the structural strength of the cabinet, which can withstand a wrong action without causing damage to the components; In terms of cabinet structure, we must strengthen the safety concept, put forward measures to prevent the spread of accidents in advance, and ensure that the accident will not endanger life safety, especially the design of non-standard cabinets should be fully considered with reference to standard cabinet types; Our design scheme must ensure that when the primary side is not powered off, there will be no potential safety hazards when the secondary side is overhauled and adjusted; Our design scheme meets the requirements of the "five defenses" of electrical equipment, and we must take into account the layout from a single unit to the entire system, whether the requirements of the five defenses have been met, whether the five defense structure is accurate, reliable, and whether there is a failure problem after operation. In addition to meeting the requirements of installation and normal operation of the cabinet, the parts of the non-standard cabinet should also pay attention to meeting the conditions under various fault conditions to avoid the occurrence of some safety accidents when the failure occurs.

To say that the central switchgear, on the best and after-sales, must be Shanghai Siemens, the quality is good, the front is very good, but from the back is the back pocket length is different.

Others: It is Huayi Electric, the quality is also very good, the "modern Nanzi" forget it, the production process is really poor, the cabinet board cutting edge actually has burrs, and the five-proof device is also bad, unacceptable.

There are many kinds of low-voltage switchgears, such as GGD, GCK, GCS, MNS, PZ30 and so on.

GGD is a fixed cabinet, and GCK, GCS, MNS are drawer cabinets.

The drawer advancement mechanism of GCK cabinet is different from that of GCS and MNS cabinets.

The GCS cabinet can only be used as a single-sided operation cabinet, with a depth of 800

MNS cabinet can be made as a double-sided operating cabinet, 1000 deep

Difference Between GCS and MNS.

1.Different places of origin: GCS is independently developed in China. MNS was introduced from ABB. GCS has been on the market since 96 years, and many aspects are modeled after MNS, such as horizontal busbars, incoming and outgoing lines, etc.

2.The steel type assembly is different: GCS is assembled from 8MF (KS) section steel, while MNS is assembled from C (KB) section steel.

In terms of strength, GCS is better than MNS. However, in terms of aesthetics, MNS is better than GCS, many manufacturers use C profile to do the original design, the maximum current can only be 4000A, and MNS can reach higher, after many improvements, GCS now reaches 6300A.

3.The drawer mechanism is different: the GCS uses a rotary propulsion mechanism (CJG-1 3), while the MNS uses a large interlock. In contrast, GCS drawers require less effort than MNS drawers.

4.The installation module is different: the installation module of the MNS cabinet is 25mm and the GCS is 20mm, the GCS can make up to 11 layers of drawers, and the MNS can do 9 layers of X2 sides.

So the GCS has a maximum of 22 drawers, while the MNS has a maximum of 72 drawers. MNS has an advantage in small currents, whereas GCS has an advantage in high currents.

XL-21 is the power cabinet, the common size is generally 1700*700*370, etc., the size can be adjusted according to the needs and location restrictions, the door is opened on one side, and the cabinet is closed and dead.

XRM non-standard box, clearly installed and concealed, openly mounted on the wall, concealed in the wall, generally used to make control cabinets.

PZ30 is a common distribution switch that every household will have with a combination of main switch and sub-switch.

The high-voltage switchgear is a kind of high-voltage distribution assembly that will involve the complete assembly of primary and secondary equipment according to a certain wiring scheme, and is used in power plants and substations as a power generator, power transformer and high-voltage line. It is equipped with high-voltage switchgear, protection electrical appliances, inspection and measurement instruments and busbars, insulators, etc. There are two categories of high-voltage switchgear: fixed and handcart type, generally in the substation and distribution station of small and medium-sized factories, most of them use more economical fixed high-voltage cabinets.

The unique feature of the handcart switchgear is that the primary equipment such as the high-voltage circuit breaker is mounted on a handcart that can be pulled out for propulsion. When the equipment is inspected and repaired, the power supply can be restored by pulling out and pushing into the same kind of handcart at any time, which has the advantages of convenience and safety for inspection and repair, and can greatly shorten the power outage time, but it is high.

1.KYN indoor AC metal armored removable switchgear (hereinafter referred to as handcart cabinet) is designed and manufactured according to the "3-35KV AC metal-enclosed switchgear" according to the IEC298 "AC metal-enclosed switchgear and control equipment" standard, and can also meet the requirements of the Ministry of Water and Power that the high-voltage switchgear should have the "five prevention" function.

2.KYN-(F-C) type indoor armored double-layer mobile open AC metal-enclosed switchgear is a part of KYN-(F-C) indoor armored double-layer removable AC metal-enclosed switchgear, which can be used in conjunction with KYN-(F-C) indoor armored double-layer removable AC metal-enclosed switchgear to form a combined power distribution device. This switch cabinet is a double-layer armored F-C cabinet, one switch cabinet can accommodate two F-C hand cars, which is equivalent to the function of a two-sided single-layer cabinet, and covers an area of the same single-layer cabinet about the same.

It saves a lot of floor space and equipment investment for users. The vacuum contactor selected for this product is specially designed for the double-layer cabinet structure, which has the advantages of simple structure, small size, beautiful appearance, high insulation level, long life, etc., and has two structures: electric holding and mechanical locking.

The production of high-voltage switchgear requires the installation and adjustment of electrical components; bus production and installation; Configuration and installation of insulated wires for auxiliary control circuits; detection and other steps. Each step of the installation needs to comply with certain reference standards, such as the installation of electrical components.

1. Reference standard: GB 3906-2006 "KV AC Metal-enclosed Switchgear and Control Equipment"; GB50254-96 Code for Construction and Acceptance of Low-voltage Electrical Appliances in Electrical Installation Engineering; GB Copper, Aluminum and Alloy Busbars for Electrical Engineers Part I: Copper and Copper Alloy Busbars.

2. Tools and measuring tools: tools: adjustable wrenches, socket wrenches, screwdrivers, needle-nose pliers, wire strippers, etc.; General measuring tools: steel ruler, steel tape measure, vernier caliper; Meters: megohmmeter, multimeter.

3. Process preparation.

Obtain the equipment design drawing file or order specification with a component list, clarify the model and specification of the component to be installed, and obtain the detailed installation and operation instructions of the installed component.

Carefully read the instruction manual of the installed electrical components.

Carefully read the enterprise standards of the installed equipment, and the design drawings and the process code are clear.

Compare and judge the "picking list" and "component schedule order specification" of the component with the component installation and instruction manual, whether the component model, specification and electrical structure filled in are clear, whether it has the uniqueness of receiving, and whether the structural type of the component can be applied to the installed equipment.

Check whether the model, specification, electrical parameters, structural type (including the creepage ratio distance of insulators) of the electrical components used are consistent with the component models, specifications, electrical parameters and structural type tests required by the "Component Schedule Order Specification".

Check whether the electrical components are intact, should have a certificate of conformity (no certificate should be confirmed by the inspector in accordance with the "product assurance document requirements" approval procedures), has implemented the compulsory certification of electrical components should have a mandatory certification mark, meet the above requirements of electrical components can be installed, random "certificate" should be handed over to the inspector to store in the equipment "factory document bag", to be properly kept.

The instruction manual and product design drawings of electrical components require the preparation of accessories, accessories and necessary spare parts for installation.

Remove dust and foreign matter from electrical components, and check before installation according to the instructions of the component instruction manual.

4. Process and requirements.

5. Inspection. Every high-voltage switchgear needs to carry out such a complicated operation process, before it can be sold, of course, there are some well-known joint venture brands, Jiangsu as one of the main lines of the State Grid, its manufacturer brand in addition to improving the above process, and Liyang Electric also provides production, installation and after-sales integration services (including scheme design, power supply installation, installation and construction, acceptance and power-on, after-sales service full tracking, lifelong maintenance), more cost-effective. Think about it.

Shanghai Yongshun Electric high-voltage switchgear, low-voltage switchgear, customized switchgear are OK.

Wankong Group is a leading brand in the domestic switchgear industry.

The models of high-voltage switchgear are KY28A-12, KYN28-24, etc., which are produced by different manufacturers. KYN28-24 indoor metal armored removable switchgear is a complete set of power distribution devices in the system of three-phase, AC 50 (60) Hz rated working bridge rock voltage of 24 thousand volts, rated working rough leakage current of 3150A and below. It is mainly used for power transmission of power plants, small and medium-sized generators, power distribution of industrial and mining enterprises and institutions, and secondary substations of power systems, feeding and large-scale high-voltage motors, etc., for control, protection and monitoring.

Its bus system is a single busbar, and it is advisable to derive a single busbar with bypass and a double bus structure. It has the function of realizing the "five preventions" locking. The cabinet can be equipped with ZN63 (VSI) vacuum circuit breaker, but also with ABB VD4 vacuum circuit breaker, which is a kind of power distribution sensitive stool device with superior performance.

KYN28A-12 is a common high-voltage switchgear in China, the full name is: Jiangsu Liyang Electric Indoor Metal Armored Removable Switchgear. The rated voltage is characterized by the fact that the vacuum circuit breaker is equipped with a mid-mounted type, i.e. the circuit breaker is located in the middle of the front cabinet of the switchgear, so that the lower space is saved and can be used for the expansion of other solutions or as a cable room.

K - stands for metal armor, Y - stands for removable type, N - stands for indoor, 28A is the model serial number issued by the industry centralized unit, and the following 12 represents the rated working voltage of 12kV. There are similar product models with different technologies in China: KYN28, KYN96, KYN44, etc., which are all mid-mounted switchgears.

Low-voltage switchgear is suitable for power plants, petroleum, chemical, metallurgy, textiles, high-rise buildings and other industries as power transmission, distribution and power conversion. The product conforms to the standard of low-voltage switchgear (IDT IEC60439-1 1999). The low-voltage switchgear is a product listed in the "Catalogue" of 3C certification compulsory certification products.

There is a manufacturer in Jiangsu that has been producing for more than 50 years, Liyang Electric, Wengfu Chemical, Taizhou Cultural Center, Jingjiang Sports Center, Gushan Wanqing Fertile Land, etc. are all products of Liyang. Liyang low-voltage switchgear has 1. Reasonable design: unitized design is carried out according to the characteristics of various switch electrical characteristics such as escape port and graphic production, and is combined into a functional unit.

2、.Universal structure and flexible assembly: C-shaped profiles meet various structural forms.

i. Requirements for the level of protection and the conditions for the use of surrounding. 3. Standard modules can be composed of protection, operation, conversion, control and other standard unit module structures arbitrarily selected groups. 4. Safety protection:

The isolation between areas and the mutual isolation of the incoming and outgoing lines of the functional units are adopted to effectively strengthen the safety protection performance. 5. Technical parameters: the main technical parameters are at the international leading level.

At the same time, it provides integrated production, installation and after-sales services (including scheme design, power supply application, installation and construction, acceptance and power-on, after-sales service full tracking, and lifelong maintenance).