HXGN15-12 AC Metal-Clad Enclosed Ring Main Unit
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Product Description
- 产品描述
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Overview
HXGN15-12(F) and HXGN15-12(F.R) box type fixed AC metal enclosed switchgear (hereinafter referred to as "switchgear") are used in ring network power supply or radiation type power supply systems with a rated voltage of 12kV and a rated current of 630A and below. They are particularly suitable for installation in prefabricated substations as control and protection for power systems. The FLN36-12D type Sulfur hexafluoride load switch or FLRN36-12D type load switch fuse combination appliance with insulated shell inside the product has the characteristics of small size, light weight, simple operation, light operating force, reliable interlocking, maintenance free, etc. It is a new generation of high-voltage switchgear required for urban power grid transformation and construction.
This product meets the standards of GB3906"3~35kVAC Metal Enclosed Switchgear", GB/T11022 "Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards", IEC60298 "AC Metal Enclosed Switchgear and Control Equipment for Rated Voltages of 1kVand Below 50kV",and DL/T404"Technical Conditions for Ordering Indoor AC High Voltage Switchgear".
Normal condition
● Surrounding air temperature:-15℃~+40℃;
● Altitude:1000m and below;
● Humidity conditions:the daily average value is not more than 95%,and the average value of water vapor pressure is not more than 2.2kPa;The monthly average value is not more than 90%,and the average value of water vapor pressure is not more than 1.8kPa.
● Seismicintensity:not exceeding 8 degrees;Places without obvious pollution such as corrosive or combustible gases.Note:When the above normalusage conditions are exceeded,users can negotiate with our company.
Structural characteristics
● The switchgear consists of a cabinet body,main switch (SF6 load switch or combination electrical appliance),grounding switch,instrument room,busbar,and other electrical components and auxiliary components.The cabinet body is assembled from aluminum zinc coated steel plates through modular forming.
● There is a pressure relief channel behind the cabinet to protect operators in case of internal faults.The busbar in the busbar compartment is insulated and directly connected to the wiring terminals of the load storage switch.
● The three-phase busbar is aranged longitudinally,allowing the switchgear to be freely expanded from left toright,making it easy to change its layout.
● The instrument room is located at the upper pat of the switchgear,and Ammeter,Voltmeter,indicator light,electric operating mechanism,etc.can be installed in the room.
Main technical parameters
Main technical parameters of the switchgear
Name Unit Data HXGN15-12(F) HXGN15-12(F·R) Rated voltage kV 12 12 Rated frequency Hz 50 50 Rated current of main busbar A 630 630 Maximum rated current of fuse A - 125 Rated short time withstand current of main circuit/rated short circuit duration kA/s 20/3 20/3 Rated expected short-circuit breaking current - 50 1min power frequency withstand voltage, phase to phase, ground/fracture kV 42/48 42/48 Lightning impulse withstand voltage, phase to phase, ground/fracture kV 75/85 75/85 Protection level IP2X IP2X Main technical parameters of the main switch (SF6 load switch and combination electrical appliance)inside the switchgear
Name Unit Data FLN36-12D/T630-20 FLRN36-12D/T125-50 Rated short time withstand current/rated short circuit duration of grounding circuit kA/s 20/2 20/2 Rated peak withstand current and rated short-circuit making current kA 50 125 Rated Active load breaking current A 630 630 Rated closed-loop up and down current A 630 630 Rated active load breaking current A 31.5 31.5 Rated cable charging current A 10 10 Rated breaking no-load transformer capacity kVA - 1250 Rated transfer breaking current A - 1700 Mechanical life 次 2000 2000 Interlock
The switchgear has the following interlocks:
●When the load switch is in the closed position,the grounding switch operation is locked;
●When the grounding switch is in the closed position,the load switch operation is locked;
●Only when the grounding switch is closed,is it allowed to open the front door of the ring main cabinet.In other cases,the front door islocked.
Operate
For the switchgear equipped with load switches,use a dedicated operating handle to operate on the front of the switchgear.There are two operating holes on the front of the operating mechanism,the upper part is the grounding switch operating hole,and the lower part is the load switch operating hole.When operating,the handle rotates
clockwise to indicate the direction of the switch closing,and counterclockwise to indicate the direction of the switch opening.Electric opening and closing devices can also be installed for remote control operation.(Note:Sometimes the load switch does not come with a grounding switch,and the grounding switch operation hole is used as a cabinet door unlocking.).
Forswitchgear equipped with combined electrical appliances,except for the manual opening button used for load switch opening operation,the operation sequence is the
same as above.The lower grounding switch installed separately in the combination electrical cabinet is opened and closed together with the upper grounding switch through a connecting rod.Release the residual small current on the fuse holder when closing to improve the safety when replacing the fuse.
Product Inquiry
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WhatsApp:+86-13870602009
E-Mail:info@wallatte.com
Adress:No.1666 Xueqin Road,Wuyang Pioneer Park,Wuyang Town,Nanchang County, Nanchang City,Jiangxi Province
