12KV Gas Mental Enclosed Ring Network Switchgear Cabinet

Model: YFAS-12

Description:

General
Technical Parameter

The product performance complies with the relevant provisions of GB/T11022 -Common Technical Requirements for High Voltage Switchgear and Control Standards*, GB1984 *High Voltage AC Circuit Breakers*, GB1985 "High Voltage AC Isolation and Grounding Switches*. GB3906 *3.6kV~40 .5kV AC Metal Enclosed Switchgear and Control Equipment*. and IEC298; YFAS- -12 type environmentally friendly core unit adopts a three- -phase split longitudinal arrangement structure, in which the vacuum arc extinguishing chamber is sealed with epoxy resin to form an independent small pole. In addition to enhancing its insulation performance, the small pole body also serves as a part of the overall structure, reducing other fixed parts, making the switch more concise and easy to install and debug; The isolation knife switch is installed on the knife holder at the top of the pole lupper isolation schemel. The operation of opening, closing, and grounding of the isolation knife switch is driven by an integrated isolation spindle, without any other transmission arm. The working position is more precise, and the operating force of the isolation mechanism is more portable; The main shaft of the circuit breaker adopts epoxy fiberglass guide rods, which have high mechanical strength and strong insulation performance. Through alloy brackets and transmission cams, the opening and dosing actions of the vacuum arc extinguishing chamber are achieved. The interphase reinforcement is equipped with silicone umbrella skirts to increase the creepage distance; The YFAS-12 environmentally friendly core unit is not only suitable for ring network cabinets with sealed gas chamber structures, but also for atmospheric pressure metal endosed ring network cabinets. The environmental protection cabinet adopts YFAS-12 type environmental protection core unit, which is installed in a sealed micro positive pressure chamber. The operating mechanism is connected to the switch body through dynamic sealing. and the inlet and outlet lines are all equipped with dedicated through wall sleeves and side expansion ltop expansion) sleeves, achieving full sealing, full insulation, and touchability of the product The YFAS-12 environmental protection core unit and cabinet have the advantages of simple structure, large air safety distance, reliable use and maintenance, high marketization of supporting operating mechanisms and various accessories, as well as complete primary solutions, strong adaptability, and high standardization.
Normative references
There are many standards related to environmentally friendly gas insulated ring network switchgear. Only the directly referenced standards are listed here, and the indirectly referenced standards are no longer listed one by one. If the version number is not marked, it indicates that the product reference is the latest valid version. O GB 1984 "High Voltage AC Circuit Breakers" O GB 1985 "High voltage AC disconnectors and grounding switches* O GB 3804 "3.6- -40.5kV High Voltage AC Load Swrtch* O GB 3906 "Rated Voltage 3.6kV~40. 5kV AC Metal Enclosed Switchgear and Control Equipment* O GB/T3309 'Mechanical Testing of High Voltage Switchgear at Room Temperature* O GB 16926 *AC High Voltage Load Switch Fuse Combination Electrical Appliances" O GB/T16927.1 "High voltage testing techniques - Part 1: General testing techniques" O GB/T11022 "Common Technical Conditions for High Voltage Switchgear and Control Equipment Standards* O DL/T1586 -12KV Solid Insulated Metal Enclosed Switchgear and Control Equipment* O DL 404 "Technical Conditions for Ordering Indoor AC High Voltage Switchgear"
Normal operating environment conditions
O Altitude s 1000M; O Environmental temperature: minimum . -25 *C;Up to 40 *C O Environmental relative humidit: The daily average value shall not exceed 95%, and the monthly average value shall not exceed 90%; O Water vapor pressure: the daily average value is not more than 2.2kPa, and the monthly average value is not more than 1.8kPa; O There should be no fire or explosion hazards in the environment, no chemical corrosive or combustible gases, water vapor, or other obvious serious pollution, and no frequent violent vibration; O Seismic resistance: 8 degrees; O When the usage conditions are different or there are special requirements, such as when the product is used in areas with an alitude of 1000M or above, the ordering party should negotiate with the manufacturer about the factory conditions, confirm the altitude correction coefficient, and require relevant factory inspection reports for verification; When the ambient temperature exceeds the applicable range of the product, the user should consider the impact of the rated current carrying capacity of the switchgear and take necessary measures to improve the ambient temperature.
Basic requirements for distribution rooms
The switchgear shall be installed in a dry, clean and ventilated distribution room. Since the installation and commissioning of the ring-network cabinet can be carried out on the front, the switch cabinet can be installed against the wall to save the floor area. If the ring-network cabinet is arranged face to face in two rows, the recommended width of the passage between the two rows of cabinets is not less than 1000mm. The dynamic load of the ring-network cabinet shall be considered in the foundation design. The embedded foundation channel steel shall be more than 10mm above the ground, and the construction of the installation foundation shall comply with the *GBJ147-90 Electrical Installation Engineering - Code for Construction and Acceptance of High Voltage Electrical Apparatus*. The installation foundation is shown in Figures 13 and 14 The bearing strength of the foundation is considered according to the maximum static load of 0.5T and dynamic load of 1.0T for each cabinet. The foundation flatness is less than 1.0mm.
Basic installation procedures and precautions
1. Place the switchgear on the foundation in order, adjust the straightness and levelness, and fix the ring-network cabinet on the foundation channel steel with bolts or other methods; 2. Connect the cabinets with bolts to ensure that the cabinets are dosely connected, each unit is from the eyebrow to the bottom, and the door seam of each compartment is flush and beautiful; 3. When installing the insulated main bus, open the top cover plate, clean the switch top sleeve, press each section of bus tube on the sleeve base with a pressing plate in turn, adijust the size and then press it to ensure that the bus is in a free state before pressing, and avoid the harmful stress caused by the non-concentricity of each section of bus; The installation of insulated busbar directly affects the operation safety of the equipment. It must be operated by professional construction personnel according to the installation and operation instructions of bus coupler, and relevant electrical tests shall be carried out according to the acceptance test requirements after installation; After the test, pay attention to check whether there are tools or foreign matters left in the bus room. After the inspection, reset and fasten the top cover plate; 4. The installation of incoming and outgoing high-voltage cables must be carried out by professional construction personnel. The construction personnel should stritly follow the production specifications of high-voltage cables and the use requirements of cable accessories, and carry out relevant electrical tests according to the acceptance test requirements after the installation; After the test, plug the cable inlet and outlet holes to prevent small animals from entering; 5. The correct installation of electrical equipment is directly related to the safety of the power system and users. The construction personnel shall strictly comply with the relevant operation approval system, safety production system and equipment installation process requirements of the local power department to ensure that there is no hidden danger of equipment operation due to human factors.
Daily basic maintenance Dperation
O Daily monitofing ①Turn on the internal observation lighting, and visually check whether there are abnormal conditions in the pole cavity, such as arc marks on the surface of the insulating parts, local obvious color change, blackening and ablation of the contact of the isolating knife, etc; ②Observe whether the control and signal power supplies on the panel are normal, and whether the indicator lights are consistent with the equipment operation status. If a microcomputer protection device is installed, check the computer recording parameters and check the computer operation status; O Daily maintenance and repair The maintenance of switchgear is divided into regular maintenance and fault maintenance. No matter what kind of maintenance operation, it should be carried out under the power failure condition and according to the maintenance requirements, the grounding wire should be hung and personal safety protection articles should be worn. The maintenance operation should be carried out by more than two people (inducting two people). The contents of regular maintenance are as fllws: ①Clean the dust at all parts, especially the dust on the insulator surface; ②Check whether the procedure of mechanical interlocking operating mechanism (including emergency unlocking) is correct; ③Whether the mechanical characteristics of circuit breaker and disconnector meet the requirements (especially pay attention to the dosing and opening of disconnector in placel. In additin, confrm whether the electrical signal is synchronized with the actual position; ④Check whether all contact parts are in good contact and whether the grounding circuit is continuous; ⑤Retighten the screws and pins, espeilly the fastening bolts at the installation of the bus coupler and cable accessories. During troubleshooting, the site operator should first determine the cause and point of the failure. If the secondary control circuit components, such as meters, signal lamps, buttons, change- over switches, secondary fuses, etc. are damaged, the manufacturer can be contacted to replace the damaged secondary circuit components lthe manufacturer ships the components, and the site personnel replace them by themseKres); The primary main circuit fault shall be determined by contacting the manufacturer to confirm the maintenance method. (For troubleshooting, it is also necessary to confirm the ownership of various costs according to the warranty period agreed in the contract terms signed between the ordering partly and the manufacturer.)
Packaging/Transportation/Storage of products
O Product Packaging Simple packaging is allowed for close transportation of products, but the packaging should still meet the basic protection and handling requirements of products, including but not limited to bottom tray, ani-collision foam or other soft materials, and plastic rainproof bags; For long- distance transportation of products, solid wooden or equivalent protective packaging materials must be used. The packaging box should meet the packaging specifications and ensure that the product is not damaged during transportation, facilitating on-site loading and unloading of goods; The product should be securely fixed inside the packaging box, and the gap between the product and the packaging box should be fled with cushioning materials and should not come into direct contact with the outer packaging box; The outer packaging box should have rainproof and moisture- proof measures inside, and the packaging moisture- -proof should comply with the provisions of GB4768; The strength of the outer packaging box should meet the weight of two functional units transported simultaneously within a single packaging and the vertical weight stacked on top and bottom layers; O Transportation of Products Foridifts and cranes can be used for product loading and unloading; When using a forkift for loading and unloading, attention should be paid to the position of the forkift arm and the depth of entry to ensure that the overall center of gravity of the equipment is located in the appropriate stress position of the loading and unloading equipment; When using a crane for loading and unloading, if lfting together with the outer packaging box, a fiat and wide soft lfting appliance should be used to ensure that the lfting appliance is firmly connected to the four legs of the outer packaging box before lfting. If the product is directly lfted after removing the outer packaging, there should be no less than two lifing points. It is strictly prohibited to use a single set of lfting appliances to lift more than one product; During product loading, unloading, and transportation, it is not allowed to place the product upside down or horizontally. When transported by non dedicated vehicles, attention shoold be paid to other types of goods on the same vehicle. The product should be separately fixed on the transport vehicle's loading platform to avoid displacement and collision with surrounding goods during transportation, resulting in product damage; Rainproof measures should be taken during transportation to prevent equipment from getting wet or wet due to weather conditions; O Product Storage Keep the environment dry, prevent rain, and avoid waterlogging areas to avoid dampness; No severe dust or corrosive gases; There is no risk of explosion or fire, and it is strictly prohibited to carry out construction operations with open flames around; There is no potential risk of debris flling from the surrounding area to avoid damage; Random materials, attachments, and other small items that are individually packaged should be stored in a warehouse with good anti- -theft measures to prevent theft or loss; Before installation, avoid unboxing at will; If the box has been unpacked, measures should be taken to prevent rain and moisture, and unrelated personnel should be strictly prohibited from operating, moving, or disassembling electrical components and components at will;
Daily basic maintenance and repair
The daily maintenance and regular maintenance of switchgear are crucial for the normal operation and service life of the equipment, and users should pay sufficient attention to them; O Daily basic maintenance Turn on the internal observation lighting and visually inspect the inside of the pole cavity for any abnormal conditions, such as arc marks on the surface of the insulation parts, local obvious color changes, blackening or ablation of the isolation contacts, etc; Observe whether the control and signal power supplies on the panel are normal, and whether the indicator lights match the operating status of the equipment. If a microcomputer protection device is installed, adjust the recorded parameters of the microcomputer to check its working status; Check whether the environment of the distribution room meets the operational requirements of the equipment, whether there is dust, corrosive, explosive gases, water leakage or a large amount of water vapor, whether there is accumulated water on the ground, whether the cable inlet and outlet holes are sealed, and whether there is a risk of small animals entering and exiting; O Maintenance The maintenance of switchgear is divided into regular maintenance and fault maintenance. Regardless of the maintenance operation, it should be carried out in a power outage state and in accordance with the maintenance requirements. The grounding wire should be hung and personal safety protective equipment should be worn. The maintenance operation should be carried out by two or more people lincluding two peoplel; Regular maintenance: 1. Clean and wipe all parts of the dust and dirt, especially the surface of the insulator. Clean non-woven fabrics or special dleaning cloths containing neutral cleaning agents should be used for wiping, such as common and purchased cable installation cleaning cloth sets; 2. Check whether the operation mechanism is flexible, and whether the lubricating grease in visible areas is noticeably discolored, missing. or dry. It should be supplemented and updated; Check whether the mechanical interlocking lincluding emergency unlockingl operates flexibly and whether each fixed point is loose; Check if the five prevention procedures are correct; 3. After cleaning and lubrication, the opening and closing operations of the circuit breaker and isolation switch should be carried out before re powering on. Confirm that the operating mechanism operates normally. If conditions permit, the mechanical characteristics of the switch should be retested to see if they are within the standard range. Visually inspect the dlosing and opening of the isolation switch in place; 4. After re powering on, confirm whether the electrical signals on the panel match the actual position; 5. When conditions are met, each electrical contact part should be disassembled and inspected, with a focus on the overlap surface and fastening bolts at the installation of the bus coupler and cable accessories. After disassembly. the overlap surface should be cleaned of the oxide layer, reapplied with conductive silicone grease, replaced with fasteners, and re tightened according to the specified torque. The cable plug should be deaned both inside and outside, and the sealing silicone grease should be reapplied before installation and resetting; Troubleshooting: During troubleshooting, on- -site operators should first determine the cause and point of the fault When secondary control circuit components such as meters, signal lights, buttons, transfer switches, and secondary fuses are damaged or faulty, they can contact the manufacturer to replace the damaged secondary circuit components (shipped by the manufacturer, and replaced by on- -site personnel; A main circuit malfunction requires contacting the manufacturer to jointly determine and confirm the repair method. (Troubleshooting also requires confirmation of the ownership of various expenses based on the warranty period agreed upon in the contract terms signed between the ordering party and the manufacturer.)
Other outstanding matters
The ordering, production, packaging, transportation, and storage processes of products should be well communicated and clearly handed over between the factory and users to ensure that the products meet user needs and receive safety guarantees before and after operation. Any outstanding matters should be confirmed through various channels of communication between the factory and users.
Ordering, transportation and storage
The user shall provide the following materials when ordering: ①Main circuit system diagram, switchgear (distribution room) layout plan; ②Schematic diagram of secondary circuit and terminal block diagram. If microcomputer protection device is selected, data transmission protocol shall be described; ③Model, specification and quantity of electrical components equipped with the equipment; ④Specification and quantity of other accessories and spare parts except standard ones; ⑤If the switch cabinet is used under special environmental conditions, it shall be specified when ordering; ⑥Other special requirements shall be provided to the manufacturer truthully and in detail; ⑦Both parties shall sign and file the final confirmed documents and data to avoid mixing the new and old versions and data with different validity. O Transportation ①Both forklit and crane can be used for handling, but two lifting rings must be used at the same time when using the crane; When loading and unloading with a forkift, pay attention to the overall center of gravity of the equipment to prevent tipping; ②It is not allowed to place upside down, horiontally or suffer severe impact during transportation; ③Fixation and rain-proof measures shall be taken during transportation to prevent equipment damage due to equipment displacement, impact or weather; ④Multi-layer stacking, inversion and horizontal placement are not allowed during transportation. O Storage When storing equipment at the factory or construction site ①The environment shall be dry, rain-proof and waterlogged areas shall be avoided to avoid moisture; ②No serious dust and corrosive gas; ③There is no open fire construction around; ④There is no potential flling debris around to avoid damage; ⑤The accompanying data, accessories, horizontal bus bars, wall bushings and other small items in separate pieces should be entered into the warehouse with good anti-theft measures to prevent theft or loss; ⑥Avoid unpacking at will before installation; If the box has been unpacked, prevent irrelevant personnel from operating, moving and disassembling eletrical components and parts at will.
Drawing

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Environmental

YFAS- -12 Sealed Vacuum Circuit Breaker/DPAS-12V Environmentally Friendly Gas Vacuum Circuit Breaker Cabinet

NO	projecl	Company	data
1	Rated voltage	KV	12
2	Rated frequency	Hz	50
3	Rated current	A	630
4	Rated short-circuit breaking current	kA	25
5	Rated short-circuit making current (peak)	kA	63
6	Rated short time withstand current duration	S	4
7	Rated short time withstand curren	kA	25
8	Rated peak withstand current	kA	63
9	Rated cable charging breaking current	A	25
10	Rated short time power frequency withstand voltage (phase to phase,to ground)	kV	42
11	Rated short time power frequency withstand voltage (break)	KV	48
12	Rated lightning impulse withstand voltage peak (phase to phase,to ground)	KV	95
13	Rated lightning impulse withstand voltage peak (fracture)	KV	110
14	Rated operating sequence		O-0.3s-CO-180s-CO
15	Partial discharge test 1.2ur	pC	≤20
16	Main circuit resistance	μΩ	≤150
17	Temperature rise test		1.1Times*630A
18	Mechanical life (circuit breaker M2/isolating switch Ml/grounding switch Ml)		10000 order/3000 order/3000 order
19	Classification based on electrical lifespan		E2
20	Classification based on capacitive current		C2
21	Rated power of energy storage motor	W	75
22	Rated voltage of energy storage motor	V	DC48V/DC110V/DC220V/AC220V(85~110%)
23	Energy storage time	S	≤12
24	Rated voltage of opening and closing coils	V	DC48V/DC110V/DC220V/AC220V
25	Rated current of opening and dosing coils	A	1.5~2.6
26	Contact stroke (opening distance)	mm	9±1
27	Contact travel (overtravel)	mm	4±1
28	Closing contact bounce time	ms	≤3
29	Rated contact pressure	N	1600±100
30	Interpolar periodicity	ms	≤2
31	Average opening speed (first 6mm)	m/s	1.1±0.2
32	Average closing speed (after 6mm)	m/s	0.6±0.2
33	Protection level of airtight compartments		IP67
34	Gas medium used for insulation		Dry air or N2
35	Design pressure	MPa	0.06
36	Rated gas pressure (20°C gauge pressure	MPa	0.02
37	Minimum functional pressure of gas (20°C gauge pressure	MPa	0
38	Gas moisture content	ppa	≤300
39	Annual gas leakage rate		≤0.5%
40	Mechanical life of three-position isolation switch (isolation switch/ grounding switch)	time	3000/3000
41	Three station isolation switch circuit resistance	μΩ	≤30
42	Contact pressure of three-position isolation switch	N	150±20
43	Phase spacing of three-position isolation switch	mm	150±0.5
44	lsolation contact opening distance (open state)	mm	125±5

YFAS-12 Sealed Vacuum Load Switch/DPAS-12C Environmentally Friendly Gas Vacuum Load Switch Cabinet

NO	project	Company	data
1	Rated voltage	KV	12
2	Rated frequency	Hz	50
3	Rated current	A	630
4	ated Active load breaking current	A	630
5	Rated closed-loop breaking current of distribution line	A	630
6	Rated cable charging breaking current	A	40
7	Rated line charging breaking currenl	A	1
8	Rated peak short-circuit making current	kA	63
9	Rated ground fault breaking current	A	31.5
10	Cable charging breaking current under rated ground fault conditions	A	69.3
11	Line charging breaking current under rated ground fault conditions	A	1.73
12	Rated short time withstand current duration	S	4
13	Rated short time withstand current	KA	25
14	Rated peak withstand current	KA	63
15	Rated short time power frequency withstand voltage (phase to phase,to ground	KV	42
16	Rated short time power frequency withstand voltage (break)	KV	48
17	Rated lightning impulse withstand voltage peak (phase to phase,to ground)	KV	95
18	Rated lightning impulse withstand voltage peak (fracture)	KV	110
19	Partial discharge test 1.2ur	pC	<20
20	Main circuit resistance	μΩ	<150
21	Temperature rise test		1.1 times*630A
22	Mechanical life (load switch M2/isolation switch Ml/grounding switch Ml)		10000 second/3000 second/3000 second
23	Classification based on electrical lifespan		E3
24	Classification based on mechanical life		M2
25	Rated voltage of opening and closing coils	V	DC48V/DC110V/DC220V/AC220V
26	Rated current of opening and closing coils	A	1.5-2.6