Good Service 12kv AC 50Hz IP67 Protection Smart Monitoring Three-Phase Switchgear Electrical Cabinet

• Customization: Available
• Certification: CCC, ISO9001
• Shell Material: Stainless Steel
• Model NO.: YGH-12
• Installation: Fixed
• Structure: Withdrawable
• Current: AC
• Rated Voltage: 12kv
• Rated Frequency: 50Hz
• Rated Current: 630A
• Protection Degree: IP67
• Gas Pressure: 0.02
• Sealing Performance: 0.05
• Altitude: 1500m
• Temperature: -25-45
• Transport Package: Standard Packaging
• Specification: YGH
• Trademark: CNC/OEM
• Origin: Zhejiang, China
• HS Code: 85362000
• Production Capacity: 80000units/Years

Product Description

Product Catalog

 

 

Product Description

1.General
YGH-12 environmental protection gas insulated ring main unit series is a complete set of power
distribution devices for 12kV, three-phase AC 50Hz, single busbar and single busbar segmented system.  The   product  has  the   characteristics  of  simple  structure,  flexible   operation,reliable interlocking, convenient installation, etc. It can provide satisfactory technical solutions for various application occasions and different users. The adoption of sensing technology and information technology, coupled with technical performance and simple and flexible configuration schemes, can meet  the  ever-changing  needs  of  the  market  and  are  suitable  for  the  requirements  of  grid intelligence.
The YGH12 environmentally friendly gas-insulated ring main unit (RMU) series is suitable for
industrial and civil cable ring networks and distribution network terminal projects. It is designed for receiving and distributing electrical energy. It is particularly well-suited for use in urban residential  areas, small-scale substations, open/close stations, cable branching boxes, containerized
substations, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, sports stadiums, railways, tunnels, and other locations.
The YGH-12 series environmentally friendly gas-insulated ring main unit complies with relevant   national standards and industry standards in the power sector. Its switches and main electrical    components are integrated into modular units, and the interphase conductive components are     enclosed in solid insulation. External wiring is done using shielded cable connectors, while the     functional unit connections utilize shielded insulated busbars. These design features significantly enhance safety during operation.
The operating mechanism of the YGH-12 series employs a spring mechanism, providing a
mechanical lifespan of over 10,000 operations. The operational data and equipment status can be remotely monitored, allowing for unmanned operation.
The YGH-12 series serves as a distribution device with certain performance capabilities.
 

3.Features
Environmental protection
The YGH-12 series environmentally friendly gas-insulated ring main unit is manufactured using non-toxic  andharmless  materials.  It  utilizes  N2  (nitrogen)  or  dry  air  as  the  insulating  medium, reducing greenhouse gas emissionsand achieving environmental objectives.During its usage, the YGH-12 series environmentally friendly gas-insulatedring  main  unit does  not  emit any toxic or harmful substances, ensuring its environmental friendliness. Additionally, theunit is designed to be recyclable and reusable, further enhancing its eco-friendliness.
Wide range of application
The  non-use  of any  toxic  or  harmful  gases  ensures  the  safety  of the  operating  environment, whether it is in basements, tunnels, ships, or various indoor and outdoor environments. The interior of the high-pressure chamber can be filled with dry air or nitrogen, which is suitable for harsh conditions  such  as:  high  altitude,  strong  wind  and  sand,  low  temperature,  severe  cold,  high environmental protection requirements, frequent operation sites, safe explosion-proof sites, high salt fog, and safe use under condensation conditions  .  Fully  insulated and fully enclosed,  it  is suitable for the equipment to continue to operate after taking some cleaning and drying measures after a short period of water inflow.
Maintenance-free
Apart from the operating mechanism, the YGH-12 series environmentally friendly gas-insulatedring main unit is in a fully sealed state. The high-voltage switch part is completely sealed,eliminating the need for cleaning and maintenance. This reduces operational and maintenancecosts.
Switchgear  has  a  high  level  of  automation,  and  its  online  monitoring  capabilities  provide real-timenotifications of equipment operating conditions to users. This enhances the automation of thedistribution  network,  reduces  manual  operation  costs,  and  lowers  production  costs  for powercompanies.
High security
The  switchgear  system  features  a  comprehensive   interlocking  system  and  clearly  visible three-phase isolationdistances to prevent accidents caused by misoperations. By eliminating the use of SF6 gas and strengthening theinterphase isolation structure, risks of expansion or explosion accidents  due  to  interphase  or  multiple  circuit  shortcircuits  are  minimized.  The   switchgear incorporates a vacuum arc-extinguishing chamber with explosion-proof andenvironmentally friendly gas  insulation,  enhancing the  protective  performance  of the switch. Additionally, theswitchgear utilizes sealed pole-pair designs for further protection.
Easy to operate
The isolation switch and grounding switch are equipped with a single operating handle, eliminating the  need  foridentification  and  concerns  about  misoperations.  When  the  circuit  breaker  is  in

operation, the operating  handles ofthe  isolation switch and grounding switch are unable to be operated, simplifying the operation process andeliminating the need for complex technical training. This design ensures that the operation is extremelystraightforward and minimizes the chances of operational errors.
The sealed pole-pair is formed using the epoxy resin APG (Automatic Pressure Gelation) process, providing  excellent  electrical  and  mechanical  performance.  It  is  a  critical  component  and  an essential part of the switch, serving both as an insulation element and a load-bearing component. It meets  technical  requirements  for  heat   resistance,  cold  resistance,  crack  resistance,   high mechanical strength, and good insulation strength.
 The switchgear features a single cabinet structure and utilizes universal insulated busbars and cableconnectors produced by professional cable accessory manufacturers. This allows for on-site assembly  of  theswitchgear  and  provides  the  flexibility  to  expand  as  needed,  eliminating  the inconvenience  of  transporting  andinstalling  multiple  grouped  cabinets.  Additionally,  if  required, combination cabinets can also be providedaccording to specific requirements.
 Single cabinet structure, using general insulated busbars and cable connectors produced by professional cable accessory manufacturers. The switchgear can be combined on site, and can be expanded at will, to avoid the inconvenience of transportation and installation caused by multiple groups of combined cabinets. Of course, combined cabinets can also be provided upon request.
Clearly visible real isolating break
 The whole series of products are designed in a unified manner, providing various cabinet types (circuit breaker, load switch, PT, busbar, busbar connection, etc.) required by users, and the shape and geometric dimensions are the same.
The switch cabinet has intelligent interfaces and sensor installation positions, which can meet the requirements of the smart grid after the configuration of intelligent equipment.
The main busbar adopts standard silicon rubber dry busbar.
 The disconnector adopts three-working position disconnector, which is installed on the busbar side.
Replace SF6 load switch ring main unit.

4.Technical data

Circuit Breaker Switchgear
Items				Unit	Values
Rated voltage				kV	12
Rated frequency				Hz	50
Rated     insulatio n level	1min power frequency withstand voltage		To earth, phase-to-phase	kV	42
			Across isolating distance		48
	Lightning impulse withstand voltage (peak)		To earth, phase-to-phase		75
			Across isolating distance		85
	Auxiliary/control circuit 1min power frequency withstand voltage (to earth)				2
Rated current				A	630
Rated short time withstand current (RMS)		Main circuit/earth switch		kA	25/4s
		Grounding connection circuit			21.7/4s
Rated short time withstand current (peak)		Main circuit/earth switch			63
		Grounding connection circuit			54.5
Rated short circuit breaking current and number				kA/ times	25/30
Rated short circuit making current (peak)				kA	63
Rated cable charging breaking current				A	25
Rated operating sequence of circuit breaker					O-0.3s-CO -180s-CO
Mechanical life		Circuit breaker/disconnector		times	10000/3000
Protection degree		Sealed gas tank			IP67
		Switchgear enclosure			IP4X
Gas pressure		Gas rated fill level (20°C, gauge pressure)		Mpa	0.02
		Gas min. fill level (20°C, gauge pressure)			0
Sealing performance		Annual leakage rate		%/year	≤0.05

Load Switch Switchgear
Items				Unit	Values
Rated voltage				kV	12
Rated frequency				Hz	50
Rated     insulatio n level	1min power frequency withstand voltage		To earth, phase-to-phase	kV	42
			Across isolating distance		48
	Lightning impulse withstand voltage (peak)		To earth, phase-to-phase		75
			Across isolating distance		85
	Auxiliary/control circuit 1min power frequency withstand voltage (to earth)				2
Rated current				A	630
Rated short time withstand current (RMS)		Main circuit/earth switch		kA	25/4s
		Grounding connection circuit			21.7/4s
Rated short time withstand current (peak)		Main circuit/earth switch			63
		Grounding connection circuit			54.5
Rated short circuit making current (peak)		Load switch/earth switch		kA	63
Rated active load breaking current				A	630
Rated closed loop breaking current				A	630
5% rated active load breaking current				A	31.5
Rated cable charging breaking current				A	10
Rated active load breaking number				A	100
Grounding fault current breaking				A/times	31.5/ 10
Circuit and cable charging current breaking under grounding fault condition				A/times	17.4/ 10
Mechanical life		Load switch/earth switch		times	10000/3000
Protection degree		Sealed gas tank			IP67
		Switchgear enclosure			IP4X
Gas pressure		Gas rated fill level (20°C, gauge pressure)		Mpa	0.02
		Gas min. fill level (20°C, gauge pressure)			0
Sealing performance		Annual leakage rate		%/year	≤0.05

5.Standards
GB/T11022 Common specifications for high-voltage alternating-current switchgear and controlgear GB/T3906 Alternating-current metal-enclosed switchgear and controlgear for rated voltages     above 3.6 kV and up to and including 40.5 kV
GB/T1985 High-voltage alternating-current disconnectors and earthing switches
GB/T3804 High-voltage alternating current switches for rated voltage above 3.6 kV and less than 40.5 kV
GB/T1984 High-voltage alternating-current circuit-breakers
GB/T4208 Degrees of protection provide by enclosure (IP code)
GB/T7354 High-voltage test techniques-Partial discharge measurements    GB/T311.1 Insulation co-ordination - Part 1 :Definitions, principles and rules


6.Use conditions
Temperature: -25~+45ºC;
Maximum temperature: (24h average) +35ºC; Average relative humidity (24h): ≤95%;
Altitude: ≤1500m;
Seismic ability: 8 degrees;
Protection degree: IP67 for live body sealing, IP4X for switchgear enclosure;
The surrounding air should not be obviously polluted by corrosive flammable gas,water vapor,etc.;  Places without frequent violent vibration, and the severity design meets various requirements under severe conditions;

7.Product structure
Overall structure

1.Low voltage instrument room                                     2.Brow
3.Control room                                                             4.Observation tube
5.Live display monitor                                                   6.Cable room
7.Vacuum circuit breaker/load switch                           8.Three-position isolation/grounding switch
9.Pressure relief device                                                10.Switching mechanism
11.Three-position mechanism                                      12.Five-protection interlock mechanism
13.Cable penetration wall sleeve
 

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