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Product classification
MNS low voltage withdrawable switchgear
Low voltage switchgear series
- Details
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- Commodity name: MNS low voltage withdrawable switchgear
MNS low-voltage withdrawable switchgear is a modular cabinet type that is factory assembled (FBA) using standard modules.
Overview
MNS low-voltage withdrawable switchgear is a modular cabinet type that is factory assembled (FBA) using standard modules. This series of low-voltage withdrawable switchgear is suitable for power plants, substations, petrochemicals, metallurgy and steel rolling, transportation energy, light industry and textiles, and other factories and mines, residential areas, high-rise buildings and other places. It is used as a power distribution equipment for power system with AC 50-60HZ and rated working voltage AC 660V and below for power conversion, distribution and control.
Model Meaning
M N S Modularity, modularization New System Use environment
• Ambient air: temperature not higher than +40°C, not lower than -5°C, and its average temperature within 24 hours is not higher than +35°C.
• Atmospheric conditions: clean air, relative humidity does not exceed 50% at the highest temperature of +40°C, and higher relative humidity is allowed at lower temperatures, such as 90% at +20°C, but temperature changes should be taken into account, and condensation may occur occasionally.
• Altitude does not exceed 2000m.
• If the above conditions of use cannot be met, the user and the manufacturer should negotiate to resolve it.
• When this device is used on offshore oil drilling platforms and nuclear power plants, a technical agreement should be signed separately.Main features
• Compact design: a smaller space can accommodate more functional units.
• Strong structural versatility and flexible assembly. C profiles with a modulus of 25mm can meet the requirements of various structural forms, protection levels and use environments.
• Standard module design: It can be composed of standard units such as protection, operation, conversion, control, adjustment, measurement, indication, etc. Users can choose to assemble them according to their needs. More than 200 assembly parts can be used to assemble cabinet structures of different schemes and form fixed partitions or drawer units.
• Safety: A large number of high-strength flame-retardant engineering plastic components are used to effectively enhance the protection and safety performance.
• High technical performance: The main parameters reach the contemporary international level.
• Compressed space: The three-dimensional degree is high, which can greatly compress the space for storing and transporting prefabricated parts.
• Easy assembly: No special and complex tools are required.Main technical parameters
project Unit Parameter Rated insulation voltage V/AC 690 Rated working voltage V/AC 400 Rated impulse withstand voltage kV 8 Rated frequency Hz 50-60 Maximum working current of main bus A 6300 Short-time withstand current of main bus kA 100 Peak withstand current of main bus kA 220 Maximum working current of distribution bus (vertical bus) A 1200、2000 Short-time peak current of distribution bus (vertical bus) kA 176 Protection level IP3X-IP4X Switchgear type
Power center cabinet (PC)
Adopts fixed installation drawer switch, various high breaking capacity from 630A to 6300A, advanced structure and intelligent circuit breakers.
Power factor automatic compensation cabinet (MDS-J), motor control center cabinet (MCC)
• Drawer type
Assembled by large and small drawers, the main switch of each circuit adopts high breaking molded case circuit breaker or rotary load switch with fuse.
• Fixed type
The functional unit of MCC cabinet adopts the method of fixed installation plug-in molded case circuit breaker, which has obvious breakpoints and enhanced safety, and has the advantage of good reliability of fixed cabinet. The functional units are separated by steel plates and are independent of each other. The unit structure is compact, the capacity is large, and the function is strong. Various types of functional units can be assembled in a single cabinet or mixed. The effective height is 72E, and they can be freely combined according to the scheme.Drawer type
There are five standard sizes, all based on 8E (200mm) height:
• 8E/4: 4 drawer units are assembled in 8E height space.
• 8E/2: 2 drawer units are assembled in 8E height space.
• 8E: 1 drawer unit is assembled in 8E height space.
• 16E: 1 drawer unit is assembled in 16E (400 mm) height space.
• 24E: 1 drawer unit is assembled in 24E (600 mm) height space.
The five drawer units can be assembled in a cabinet as a single assembly or as a mixed assembly. The maximum number of fixed units that can be accommodated in a single assembly in a cabinet is shown in the table.Drawer type 8E/4 8E/2 8E 16E 24E Maximum number of units 26 18 9 4 3 Fixed type
Standard sizes are based on 8E (200 mm) height:
• 8E: 1 unit is assembled in 8E height space.
• 16E: 1 unit is assembled in 16E (400 mm) height space.
• 24E: 1 unit is assembled in 24E (600 mm) height space.
• 8E/2: 2 units are assembled in 8E height space.
• 8E/4: 4 units are assembled in 8E height space.
Each unit can be assembled individually in one cabinet, or mixed and assembled in one cabinet. Maximum number of drawer units. See tableDrawer type 8E/4 8E 16E 24E Maximum number of units 26 9 4 3 Cabinet structure
The basic structure of the switch cabinet is assembled from C-shaped profiles. The C-shaped profile is made of steel plates with E=25 mm as the module installation hole, and is assembled with self-tapping screws and 8.8-grade bolts. All cabinet frames and inner partitions are galvanized. The surrounding door panels and side panels are powder-coated, and the effective installation height is 72E. The basic structure of the cabinet is shown in Figure 2. The basic dimensions of the cabinet are shown in Table 3.Cabinet structure diagram (mm)
Busbar bridge installation diagram (mm)
Note: The manufacturer can provide various forms of busbar bridges according to user requirements.
| About Huarui Power
The initial factory of Cangzhou Huarui Transformer Co., Ltd. was born in 1989. After developing and growing, it integrated resources and registered a company in July 2004. It is located in Cangzhou City, Hebei Province, which is known as "the first in the world in the hometown of martial arts.
Huarui Power, a high and low voltage power expert, and a supplier of optical storage and charging solutions, is a high-tech enterprise integrating R & D, design, manufacturing, product sales and service operations. It is a qualified supplier of State Grid, a qualified supplier of Sinochem Group, a qualified supplier of China's military enterprises, and the first brand of transformer in Cangzhou.
Huarui Power, its products cover energy-saving distribution transformers, box-type substations, high and low voltage complete sets of electrical equipment, power distribution automation, high-voltage cable branch boxes, etc., provide professional solutions for different industries and fields, and provide a variety of customized power consumption solutions according to the characteristics of customers' power consumption. The products are used in distribution networks and new energy projects, rail transit, metallurgy, petrochemical, real estate and other fields in all provinces and regions across the country.
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Huarui Electric Power
Distribution transformer
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Address: Xinxing Town Industrial Zone, Qing County, Cangzhou, Hebei
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