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Low voltage Switchgear A、SGHK type low voltage switchgearstandard modular assembly (FBA) low voltage switchgear1.jpg
PRODUCT SUMMARIZESGHK type low voltage switchgear is a low voltage switchgear (hereinafter referred to as switchgear) using standard modular assembly (FBA). It is suitable for 1000 AC (60) Hz and rated working voltage.It is used for power distribution, conversion, control and reactive power compensation in 690V and rated power supply 6300A and below.  The product complies with GB72511, 1EC60489-1, JB/T9661, BS EN60439-1, VDE0660 500.>>Structural classification      SGHK-F fixed partition type low voltage switchgearSGHK-C withdrawable low voltage switchgearSGHK-H hybrid low voltage switchgear>>Conditions of Use1. The ambient air temperature does not exceed + 40 ° C and is not lower than - 5 ° C. The average temperature does not exceed +35 ° C within 24 hours.2. Atmospheric conditions: The air is clean. The relative humidity does not exceed 50% at the highest temperature +40 °C, and the relative humidity is allowed at lower temperatures.  For example, it is 90% at +20 ° C, but it is possible to accidentally produce moderate condensation due to temperature changes.3, temperature range: between -25 ° C to +55 ° C for transport and storage processes, ina short time (24h) can reach +70 °C.4. The altitude does not exceed 2000 meters.5. Environmental pollution, etc.: Level 3.6. If some electrical components are selected and cannot meet the above working conditions, the manufacturer and the user shall negotiate to solve the problem.7. When the conditions of use do not match the above working conditions, the user shall propose to the manufacturer and negotiate to resolve it.>>Main electrical performance
Rated   working voltage VMain   circuit380、660
Auxiliary   circuitAC220、AC380、DC110、DC220
Rated   insulation voltage VMain   circuit400、690
Rated   impulse withstand voltage (1.2/50μs) kVMain   circuit6、8、12
Rated   operating current (1P3x) AHorizontal   bus6300   (single-sided operation cabinet),2000   (double-sided operation cabinet)
Vertical   bus1250   (extracted),2000   (plug-in MCCB)
Rated short-time withstand current kA/1   secondHorizontal bus50、65、80、100
Vertical bus50、65、80
Rated   peak withstand current kA / 0.1 secondsHorizontal   bus105、143、176、220
Vertical   bus105、143、176
>>StructureThe frame structure is made of high-quality cold-rolled steel plate or imported aluminum-zinc plate. The E = 25mm modulus is used as the minimum basic unit and bolted to assemble various cabinet structures and functional units.  8.8 self-tapping locking bolts can also be used according to user requirements.The front is double-layer or single-layer door. When double-layered: the inner layer is the functional unit small door and the outer layer is the explosion-proof transparent door. It is beautiful, luxurious and has a high degree of enclosure protection.The area inside the cabinet is divided into main (horizontal) busbar compartment, feeder (vertical) busbar compartment, functional unit compartment and outlet terminal compartment; the compartment is in the form of 3 or 4, and meets IP2X protection requirements.>>Protection level1. Product enclosure protection level: IP3X (standard type), IP31, IP4X, IP41, IP43, *IP5X, *IP54, *IP55.2. When the drawer is connected, tested, the main switch is closed or opened, the protection level of the casing is unchanged.3. When the drawer is in the separated position, there is no protection level IP2XD.4. When the drawer is in the removal position, the degree of protection between the compartment and the hazardous live parts is IPXXB.* Due to the high degree of protection, derating should be considered! It must be in the form of a double door structure.>>Cabinet structure sizeThe listed dimensions are for reference only and the actual dimensions should be determined according to the design and arrangement scheme.
Height (H)   mmWidth (W)   mmDepth (D)   mmRemarks
2200600800、1000After exit
2200800800、1000After exit
22001000800、1000Rear   outlet, side outlet
22001200800、1000Rear   outlet, side outlet
2200*1000600MCC   cabinet (side line), side outlet (non-standard custom)
Note: *PC   cabinets and MCC cabinets can be used for upper and lower access cabinets   according to site requirements.

B、SGHK-F series fixed partition type low voltage switchgear2.jpgPRODUCT SUMMARIZEThe SG HK-F series fixed-divided switchgear can be designed as a single-layer door structure or a double-layer door structure according to the needs of users and the high degree of protection.  It is applicable to three-phase three-phase AC 50HZ, 60HZ, rated voltage 660V, rated current 2500A and below three-phase four-wire system and three-phase five-wire power system for receiving electric energy and distributing electric energy.  It is widely used in power distribution center PC and motor control center MCC of power plants, substations, factories and mines and high-rise buildings.>>Features1、 Main horizontal busbar one cabinet top through type (main horizontal busbar adopts cabinet top through type)2、 The plug-in switch is safe and reliable (all feed-out circuit switches are pluggable, safe and reliable, and easy to maintain and repair.)3、 Main (horizontal) busbar 6300A (maximum capacity of main (horizontal) busbar is 6300A)4、 Feed (vertical) busbar 2000A (feeder (vertical) busbar maximum capacity is 2000A)5、 The metal plate spacing (the functional unit, the vertical bus bar and the outlet terminal are separated by metal plates to prevent accidents from expanding and to ensure the safety of maintenance.)6、 The humanized safety design of the door (the operating handle and the door outside the cabinet have a reliable mechanical interlock to ensure that the door can only be opened after the switch is opened)C、SGHK-C series withdrawable low-voltage switchgear3.jpgPRODUCT SUMMARIZEThe SGHK-C series draw-out switchgear consists of drawers of different capacity units. For ease of operation, a single-layer door structure is used.  Applicable to power plants, metallurgical rolling steel, petrochemical, light industrial textiles, port terminals, Datun hotels and other places for AC three-phase four-wire or five-wire system, voltage 380V, 50Hz power system for power distribution and electric control.>>Features1、 The main busbars are arranged in a variety of ways (the main busbar can be horizontally connected through the cabinet top or flattened through the cabinet.)2、 There are many drawer terminal terminals (the drawer unit generally has 16 secondary isolation contacts, except for 1M/4, other drawer units can be increased to 32 outlet terminals, and each outlet terminal can be connected with two 1.5-2. .5mm2 and multiple strands of flexible wire.)3、 Main (horizontal) busbar 6300A (main (horizontal) busbar maximum operating current 6300A.)4、 Feed (vertical) bus 2500A (feed (vertical) bus maximum operating current 2500A.)5、 The conductive part of the drawer unit is completely sealed (the first and second inserts of the drawer unit are inserted, the conductive part is completely sealed in the flame-retardant insulator to prevent arc damage to the contact and arcing between the phases. Each switchgear can be installed at most 10 drawers for 1M; 20 for 1 M/2 drawers; 40 for 1 M/4 drawers. Various types of drawers can be mixed.)6、 The insulation isolation between the units is strong (the operating handle and the door outside the cabinet have a reliable mechanical interlock to ensure that the door can only be opened after the switch is opened)>>Drawer unit typeThere are seven types of drawer units: 1M/4, 1M/2, 1M, 1.5M, 2M, 2.5M, 3M(Note: M-drawer unit height modulus, 1 M=200mm)  >>Maximum drawer unit capacity3-1.png>>InterlockingThe drawer function unit has a reliable mechanical interlock to prevent misoperation and load insertion and removal, and to indicate the closing, testing, moving, and separating positions by operating the handle control.  Up to three padlocks can be added after each position is positioned.Note: When the drawer is inserted and removed and operated, the operation functions listed in the figure and their position actions must be strictly followed to avoid damage to the device.D、SGHK-H series hybrid low-voltage switchgear4.jpgPRODUCT SUMMARIZEThe SGHK-H series hybrid low-voltage switchgear is composed of a mixture of two different types of feed units in the SGHK-F series fixed-divided switchgear and the SGHK-C series draw-out switchgear.  Hybrid low-voltage switchgear is used in power plants, petrochemicals, metallurgical rolling, textile, high-rise buildings and other industries. It is a large-scale power generation, petrochemical and other automation, and requires a computer interface, as a three-phase AC 50 (60) Hz, voltage 380 (600) V, rated power 6300A and below in the power supply system, power distribution, motor centralized control, reactor current limit and no power compensation.>>Features1. In a group of switch cabinets or the same switch cabinet, there are both fixed split feeder units and drawer type feed units.2. In such switchgear cabinets, when the working current of the feed-out circuit is generally >400A, the fixed-separated unit should be selected first, because the fixed-separated unit will be adopted in terms of operational reliability and maintenance. Better than using a drawer unit.3. For equipment that does not need to be quickly maintained or replaced (such as allowing longer maintenance and replacement time), the fixed-separated feed unit should be preferred;4. In the same switchgear, the drawer unit with a small capacity (such as current 200A and below) should be placed in the upper part of the switchgear as much as possible, and the capacity is large (such as current) 400A) The drawer unit or fixed partition unit should be arranged five in the lower part of the switch cabinet.>>Reactive power compensation cabinetAccording to the situation of the electrical equipment, the reactive power automatic compensation cabinet is designed with a reactive power compensation scheme of the grid approximate sine wave and a reactive power compensation scheme of the distribution filter reactor.Harmonic source apparent power and transformer apparent power (Gh / sn) is less than 10% of the normal situation.  The cabinet is 800, 1000mm wide for users to choose.10% Gh/SnIn 60% of cases, the reactor is connected in series with the capacitor, which has the dual functions of harmonic absorption and reactive power compensation.  The existing reactance rate p = XL / Xc x 100% = 7%, tuning frequency fR = 189Hz and p = 6%, fR = 204 Hz Two standard series to choose from:a) p=7%, fR=189 Hz can absorb a small amount of 5th harmonic, and block the grid containing harmonics.b) p = 7 %, fR = 204Hz can absorb about 5% of the 5th harmonic.  - Can also be configured according to user requirements.>>Busbar system1. The horizontal busbars are arranged behind the cabinet (when the line is out) or at the top of the cabinet (when the line is out). One or two sets of busbars can be configured according to requirements. The two can be powered separately and can be connected in parallel.2. The protective conductor (PE line) and the exposed conductive member (frame) are separately disposed and penetrated to form a complete protective grounding system, and the PE busbar can withstand a predetermined short-circuit current.3. The vertical busbar of MCC cabinet is assembled in the insulating function board, which can prevent the phase discharge of the vertical busbar caused by the switching arc, and improve the electric shock protection capability and safe operation rate of the product.
>>InstallationThe main busbar (side outlet) structure behind the cabinet is wall-mounted, it is recommended to leave the wall behind the cabinet.300mm.The main busbar (rear outlet) structure at the top of the cabinet is installed away from the wall.800mm.>>Ordering informationThe user should provide or clarify the following information:a) Main circuit scheme single line diagram and secondary schematic diagramb) Detailed specifications and quantity of electrical componentsc) main bus capacity or specificationsd) In and out line mode and cable specificationse) Switch cabinet dimensions and floor planf) Busway (bridge) dimensions and capacity specificationsg) When there is a harmonic source in the system (such as large-scale rectification equipment, etc.), the user shall take the specified suppression measures, or propose it at the time of ordering, and the two parties shall negotiate and handle it.In order to avoid damage to power distribution and electrical equipment.>>PART OF THE CUSTOMER LIS
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