Xiongfeng Electrical Co., Ltd.

Contact Person: Mr. Wang
Mobile: +86-13806977339
Email: it@fjxfdq.com
Address:No. 1 Er Road, Beijiao Industrial Park, Jiangle County, Fujian Province

BKHB-12 medium-voltage switchgear

We will present the performance, safe operation methods, and technical parameters of BKHB-12 medium-voltage switchgear

Content

overview

BKHB-12 environmental protection gas insulated ring network cabinet series is a complete set of power distribution devices with 12kV, three-phase AC 50Hz. The product has the characteristics of simple structure, flexible operation, reliable interlocking, and easy installation, and can provide technical solutions for different applications. The adoption of sensing technology and information technology, coupled with technical performance and simple and flexible configuration solutions, can meet the changing needs of the market and apply to the intelligent requirements of the power grid.

The BKHB-12 series of environmentally friendly gas insulated ring network cabinets is suitable for industrial and civil cable ring network and distribution network terminal projects. As the reception and distribution of electrical energy, it is especially suitable for urban residential area power distribution, small secondary substations, switchgear stations, power end branch boxes, box substations, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, hospitals, stadiums, railways, tunnels and other places.

BKHB-12 environmental protection gas insulated ring network cabinet series Its switches and main electrical components are integrated modules.

The conductive parts between the phases are solid insulated packages, shielded cable joints are used for the outward wiring, and shielded insulated busbars are used for connecting the functional units. Therefore. The safety of use is greatly improved, and the operating mechanism adopts a spring mechanism, and the mechanical life is more than 10000 times. All its operating data and equipment status can be remotely monitored and can be unattended. It is actually a power distribution device with superior performance.

The following units can be selected to form an economical and practical power supply unit in the cabinet: vacuum new circuit unit [630A, 20-25kA]; Vacuum negative cat switch unit [630, 20-25kA].

Product features:

Environmental protection: N2 or dry air is used as an insulating medium in product manufacturing to reduce greenhouse gas emissions and achieve environmental protection purposes.

Wide range of application: no toxic and harmful gases are used, and the safety of the use environment. Whether in basements, tunnels, on ships, or in or outside. The interior of the high-pressure chamber can be filled with dry air or nitrogen, and is suitable for safe use under harsh conditions such as high altitude, strong wind and sand, low temperature, severe cold, high environmental protection requirements, frequent operation sites, safe and explosion-proof places, high salt spray, and condensation conditions. Fully insulated and fully enclosed, suitable for the equipment after a short period of water intake, after some cleaning and drying measures are adopted, it can continue to operate.

Maintenance-free: BKHB-12 environmental protection gas insulated ring network cabinet series The high-voltage switch part of the operating mechanism is in a fully sealed state, so that it can be free from cleaning and maintenance, and reduce the cost of operation and maintenance. The switchgear has a high degree of automation, and the online detection function will notify the user of the operation of the equipment in real time. It is more conducive to the automation of the distribution network. Reduce labor operating costs and reduce production costs of power enterprises.

High safety: Perfect interlocking and interlocking system, the three-phase isolation break is clearly visible, avoiding the occurrence of misoperation accidents. The application of SF6 gas has been eliminated. Strengthen the interphase isolation structure to avoid interphase or multi-circuit short circuits that can expand or cause explosion accidents. The vacuum extinguishing chamber with explosion-proof environmental protection gas cabinet vacuum energy is adopted, and the sealed pole column has further protective performance for the switch.

Ease of operation: the disconnect switch grounding switch has only one operating handle, no need to identify and worry about errors, when the circuit breaker is running, the operating handle of the disconnect switch grounding switch can not be operated, and there is no need for complex technical training, so that the operation becomes extremely simple and prevents operation errors.

The sealed pole is formed by epoxy resin APG process, which has excellent electrical and mechanical properties, and the sealed pole is a key component of the switch, which is both an insulating and a bearing part. At the same time, it meets the technical requirements of heat resistance, cold resistance, crack resistance, high mechanical strength, and good insulation strength.

Single cabinet structure, using general insulation busbar and cable plugging and unplugging head produced by professional cable accessory manufacturers. The switch cabinet can be closed on site and expanded at will, avoiding the inconvenience of transportation and installation caused by multi-sister closure cabinets. Of course, it can also be used to close the cabinet with the sister.

The real isolation fracture is clearly visible

The whole series of products are uniformly designed, providing a variety of cabinet types (dissolver, load switch, PT, busbar, busbar, etc.) required by users, and the shape and geometry are completely consistent.

The switchgear has intelligent interfaces and sensor installation positions, which can meet the requirements of the smart grid after being equipped with intelligent equipment.

The main bus adopts standard silicone rubber dry busbar.

The disconnect switch switch adopts a three-station disconnect switch and is installed on the bus side.

Replace SF6 load switch ring network cabinet.

Circuit breaker cabinet

project			unit	parameter
Rated voltage			kV	12
Rated frequency			Hz	50
Rated insulation level	1min power frequency withstand voltage	Opposite the ground and the phase	kV	42
	1min power frequency withstand voltage	Isolation fracture	kV	48
	Lightning Shock Withstand Voltage (Peak)	Opposite the ground and the phase	kV	75
	Lightning Shock Withstand Voltage (Peak)	Isolation fracture	kV	85
	1min power frequency withstand voltage for auxiliary/control loops (to ground)		kV	2
Rated current			A	630
Rated Short-Time Withstand Current (RMS)		Main loop/ground switch	kA	25/4s
Rated Short-Time Withstand Current (RMS)		Ground connection loop	kA	21.7/4s
Rated peak withstand current		Main loop/ground switch	kA	63
Rated peak withstand current		Ground connection loop	kA	54.5
Rated short-circuit interruption current and frequency			kA / times	25/30
Rated Short Circuit Closing Current (Peak)			kA	63
Rated cable charging breaking current			A	25
The rated operating sequence of the circuit breaker				O - 0.3s - CO - 180s - CO
Mechanical life	Circuit breaker/disconnect switch		times	10000/3000
Protection level	Sealed cabinet			IP67
Protection level	Switchgear housing			IP4X
Gas pressure	Gas Rated Fill Level (20°C, Gauge Pressure)		Mpa	0.02
Gas pressure	Minimum gas filling level (21°C, gauge pressure)		Mpa	0
Sealing performance	Annual leakage rate		%/year	≤0.05

Load switchgear

project			unit	parameter
Rated voltage			kV	12
Rated frequency			Hz	50
Rated insulation level	1min power frequency withstand voltage	Opposite the ground and the phase	kV	42
	1min power frequency withstand voltage	Isolation fracture	kV	48
	Lightning Shock Withstand Voltage (Peak)	Opposite the ground and the phase	kV	75
	Lightning Shock Withstand Voltage (Peak)	Isolation fracture	kV	85
	1min power frequency withstand voltage (to ground) for auxiliary/control loops		kV	2
Rated current			A	630
Rated Short-Time Withstand Current (RMS)		Main loop/ground switch	kA	25/4s
Rated Short-Time Withstand Current (RMS)		Ground connection loop	kA	21.7/4s
Rated peak withstand current		Main loop/ground switch	kA	63
Rated peak withstand current		Ground connection loop	kA	54.5
Rated Short Circuit Closing Current (Peak)		Load switch/ground 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
The number of rated active load breaks			times	100
Ground fault current interruption			A / times	31.5/10
The charging current of the line and cable is interrupted under the condition of ground fault			A / times	17.4/10
Mechanical life	Circuit breaker/disconnect switch		times	10000/3000
Protection level	Sealed cabinet		-	IP67
Protection level	Switchgear housing		-	IP4X
Gas pressure	Gas Rated Fill Level (20°C, Gauge Pressure)		Mpa	0.02
Gas pressure	Minimum functional level of gas (20°C, gauge pressure)		Mpa	0
Sealing performance	Annual leakage rate		%/ year	≤0.05

Environmental protection gas cabinet implementation standards

GB/T1022 high-voltage switchgear and control equipment standard common technical requirements

GB/T39063640.5kV AC metal enclosed switchgear and control equipment

GB/T1985 High voltage AC disconnect switch and grounding switch

GB/T38043.6-40.5kV AC High Voltage Load Switch

GB/T1984 High Voltage AC Circuit Breaker

GB/T4208 enclosure protection level IP code

GB/T7354 partial discharge measurement

GB/T311.1 Insulation and Fitting Part 1: Definitions, Principles and Rules

Normal use conditions of gas cabinets

High temperature: +45 degrees Celsius;

Low temperature: -25 degrees Celsius:

High temperature: (24-hour average) +35 degrees Celsius;

Large average relative humidity (24 hours): ≤95%;

Altitude: ≤ 1500 meters:

Seismic Capacity: 8 degrees:

Protection level: live body seal IP67, switchgear shell IP4X;

The surrounding air should not be significantly polluted by corrosive combustible gases, water vapor, etc.

When used under normal environmental conditions that exceed the provisions of GB/T3906, the user and our company shall negotiate.

Product structure

Ring network cabinet annotation description:

1. Low-pressure instrument room 2. Eyebrow 3. Operation room 4. Observation simplification

5. Live display 6. Cable room 7. Vacuum circuit breaker/load switch

8. Three-station isolation/grounding switch 9. Pressure relief device 10. Switch mechanism

11. Three-station mechanism 12. Five-proof interlocking mechanism 13. Inlet and outlet line through the wall casing 14. Grounding busbar

Environmental protection gas cabinet configuration plan 1

CL 650mm

◆Basic equipment◇ Load switch

◇ Two-station disconnect switch

◇ Live display

◇ Standard busbar

◇ Operating handle

◇ Contact bus

Optional accessories

◇ Electric operation mechanism

◇ Digital display instrument

◇ DC power supply

◇ Electromagnetic lock

◇ Pointer instrument

◇ 3-in-2 mechanical interlock

◇ Online monitoring of lightning arresters

◇ Low pressure chamber

◇ Digital display instrument

◇ Raised seat

◇ Passive protection

◇ Raised seat

◇ Rectifier module

◇ Low pressure chamber

◇ 2-in-1 mechanical interlock

◇ Surge arresters

◇ DC power supply (12h-24Ah)

◇ Pointer instrument

◇ Electromagnetic lock

PTC 500mm

◆Basic equipment

◇ Load switch

◇ Three-station disconnect switch

◇ Live display

◇ Standard busbar

◇ Operating handle

◆ Voltage transformer

◇ PT roasting tube

◇ Elbow type cable plug (including cable)

◆Optional accessories

◇ Electric camera mechanism ◇ Digital display instrument ◇ DC power supply

◇ Electromagnetic lock

◇ Pointer instrument

◇ 3-in-2 mechanical interlock

◇ Online monitoring of lightning arresters

◇ Low pressure chamber

◇ Digital display instrument

◇ Raised seat

◇ Passive protection

◇ Raised seat

◇ Olive block

◇ Low pressure chamber

◇ 2-in-1 mechanical interlock

◇ Surge arresters

◇ DC power supply 112h-24Ah)

◇ Pointer instrument

◇ Electromagnetic lock

PT 500mm

◆Basic equipment

◇ Three-station disconnect switch

◇ Live display

◇ Standard field line

◇ Operating handle

◇ Voltage transformer

◇ PT roasting tube

◇ Elbow type cable plug (including cable)

Optional accessories

◇ Electric operation mechanism

◇ Digital display instrument

◇ DC power supply

◇ Electromagnetic lock

◇ Pointer instrument

3-in-2 mechanical interlock 0

◇ Online monitoring of lightning arresters

◇ Low pressure chamber

◇ Digital display instrument

◇ Raised seat

◇ Passive protection

◇ Raised seat

◇ Rectifier module

◇ Low pressure chamber

◇ 2-in-1 mechanical interlock

◇ Surge arresters

◇ DC power supply 112h-24Ah)

◇ Pointer instrument

◇ Electromagnetic lock

PT 500mm

◆Basic equipment

◇ Live display

◇ Standard busbar

◇ Voltage transformer

◇ PT roasting tube

◇ Elbow type cable plug (including cable)

◆Optional accessories

◇ Electric camera mechanism

◇ Digital display instrument

◇ DC power supply

◇ Electromagnetic lock

◇ Pointer instrument

◇ 3-in-2 mechanical interlock

◇ Online monitoring of lightning arresters

◇ Low pressure chamber

◇ Digital display instrument

◇ Raised seat

◇ Passive protection

◇ Raised seat

◇ Rectifier module

◇ Low pressure chamber

◇ 2-in-1 mechanical interlock

◇ Follow the thunder device

◇ DC power supply 112h-24Ah)

◇ Pointer instrument

◇ Electromagnetic lock

PTS 500mm

◆Basic equipment

Now voltage transformers

o PT fused tubes

◇ Elbow type cable plug (including cable)

Optional accessories

arrester

◇ Online monitoring of lightning arresters

◇ DC power supply 112h-24Ah)

◇ Low pressure chamber

Q Pointer Instrument

◇ Digital display instrument

◇ Electric lock

◇ Raised seat

M 650mm

◆Basic equipment

0 live display

◇ Long and short field lines

◇ Transfer bus

Q Voltage transformer

◇ FT roasting tube

◇ Metering box

0 Voltage Transformer (Electricity Supply)

Note: If the PT front is equipped with a formal disconnect switch, the cabinet width size needs to be changed to 1000mm, and the other dimensions remain unchanged.

◆Optional accessories

Low pressure chamber

◇ Pointer instrument

◇ Digital display instrument

◇ Electromagnetic lock

◇ Raised seat

◇ Temperature and temperature controller

Environmental protection gas cabinet configuration scheme 2

C 420mm

◆Basic equipment

◇ Three-station disconnect switch

0 live display

◇ Standard field line

◇ Operating handle

◇Load switch

◆Optional accessories

◇ Electric operation mechanism

◇ Surge arresters

◇ Comprehensive insurance

◇ Digital display instrument

◇ DC power supply

◇ Magnetic lock

◇ Zero-sequence transformer

◇ Fault indicator (with temperature measurement)

◇ Pointer instrument

Q 3-in-2 mechanical interlock

◇ Cable attachment

◇ Online monitoring of lightning arresters

◇ Passive protection

◇ Raised seat

◇ Rectifier module

◇ Core type current transformer

◇ Fault indicator EKL-4

Q Low pressure chamber

◇ 2-in-1 mechanical interlock

◇ Incoming line grounding locking device

V 420mm

◆Basic equipment

◇ Three-station disconnect switch

◇ Live display

◇ Standard busbar

◇ Operating handle

◇ Circuit breaker

◇ Current transformer

◆Optional accessories

◇ Electric operation mechanism

◇ Surge arresters

◇ Comprehensive insurance

◇ Digital display instrument

◇ DC drifting

◇ Electromagnetic lock

0 Zero-sequence transformer

◇ Fault indicator (with temperature measurement)

◇ Pointer instrument

Q 3-in-2 mechanical interlock

◇ Cable attachment

◇ Online monitoring of lightning arresters

◇ Passive protection

◇ Raised seat

◇ Rectifier crossbar

◇ Core type current transformer

◇ Fault indicator EKL-4

◇ Low pressure chamber

◇ 2-in-1 mechanical interlock

◇ Incoming line grounding locking device

V 650mm

◆Basic equipment

◇ Two-station disconnect switch

◇ Live display

◇ Standard busbar

◇ Operating handle

◇ Circuit breaker

◇ Current transformer

◇ Contact bus

◆Optional accessories

◇ Electric operation mechanism

◇ Comprehensive insurance

◇ Low pressure chamber

0 Pointer Instrument

◇ Digital display instrument

◇ Raised seat

◇ Passive protection

◇ Rectifier module

◇ Electric lock

◇ 2-in-1 mechanical interlock

◇ 3-in-2 mechanical interlock

◇ DC power supply

Environmental protection gas cabinet configuration plan 3

Dl 420mm

◆Basic equipment

◇ Live display

◇ Standard busbar

Optional accessories

◇ Cable attachment

◇ Surge arresters

◇ Online monitoring of lightning arresters

◇ Electric lock

◇ Raised seat

◇ Fault indicator EKL-4

◇ Fault indicator (with temperature measurement)

Dl 420mm

◆Basic equipment

◇ Live display

◇ Standard busbar

◇ Operating handle

◇ Two-station disconnect switch

◆Optional accessories

◇ Low pressure chamber

◇ Two-in-one maple interlock

◇ 3-in-2 mechanical interlock

◇ Electromagnetic lock

◇ Raised seat

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