Box Type Fixed Metal-enclosed Swithchgear
  • Box Type Fixed Metal-enclosed SwithchgearBox Type Fixed Metal-enclosed Swithchgear

Box Type Fixed Metal-enclosed Swithchgear

Keeya stands as a leading manufacturer in the electrical industry, delivering cost-effective solutions such as the Box Type Fixed Metal-enclosed Swithchgear. Known for our commitment to quality at a low price, Keeya's switchgear is meticulously engineered for reliability and efficiency in power distribution systems.

Model: XGN2-12KV Switchgear HXGN15-12KV Ring Main Unit Switchgear

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Product Description

As manufacturers, our emphasis on cost-effectiveness ensures that clients receive high quality products without compromising their budget. The Box Type Fixed Metal-enclosed Swithchgear by Keeya exemplifies our dedication to providing economical yet robust solutions, making it a preferred choice for those seeking affordable and reliable switchgear solutions in diverse applications.


HXGN15-12 box type Pxed metal enclosed ring main unit (ing main unit for short) is suitable for power system of AC 50Hz, 12kV t's widely used in industialand evil cable ring network and power supply terminal. Especially suitable for small secondary substations, switching stations, urban residential distribution, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, hospitals, stadiums, railways and other places.


Service condition

● Altitude: ≤ 1000m(special requirements can be noted when ordering, currently there are 6 groups operating at an altitude of 5200m).

● Ambient temperature: -35℃ ~+45℃, maximum daily average temperature difference ≤ 25°C. The average daily relative humidity shall not exceed 95%, and the average monthly relative humidity shall not exceed 90%.

● Seismic capacity: 8 degrees.

● In place of no severe vibration and impact and no Pre, chemical corrosion or explosion hazard.


Executive standard

● GB3906-2006 Alternating-current metal-enclosed switchgear and controlgear for rated voltage above 3.6kV and up to and including 40.5kV

● IEC 60298 A.C.metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to and including 52 kV

● GB/T 11022-2011 Common specification for high-voltage switchgear and controlgear standards


Product feature

Beautiful and compact appearance,the protection level of the shell is more than IP3X after the assembly of the cabinet.

● The upper and lower units are modular and easy to install and maintain.

● The cabinet rack adopts riveted structure to ensure the strength of the cabinet.

● lntegrated low voltage room for mounting secondary components and an expandable meter room for mounting more secondary protection units. Pressure relief channels for installation are available.

● lt adopts SF6 gas insulated maintenance-free load switch,with good economical efficiency and reliability. Easy to operate.

● With a complete Pre-prevention interlock device,high installation performance.


HXGN15-12

Box-type Fixed Metal-enclosed Switchgear

Product structure

● The overall structure

● The ring Main Unit is composed of bus room,load switch (or circuit breaker room), cable room, operating machinery, interlocking mechanism and low-voltage control room, as well as measurement or metering circuits. Each compartment is separated by steel plates to avoid failure to the adjacent room.

● Bus room

The bus room is arranged on the upper part of the switchgear, where the main buss are connected together and run through the entire row of switchgear. The buss are arranged horizontally and can be easily expanded.

● Main switch room

a.Load switch room: There is a load switch in the switch room.The shell of the load switch is made of epoxy resin,Plled with SF6 gas as the arc extinguishing and insulating medium.At the leading end of the operating shaft,there are two transparent hot-presses molded plastic end cap,through which the state of the contact can be observed. SF6 gas density meter or gas density meter with alarm contact can be installed in the switch room according to customer requirements

b.Circuit breaker room: The circuit breaker room is located in the middle of the switchgear, which can be equipped with special vacuum circuit breakers or SF6 circuit breakers according to customer needs.Its breaking capacity can meet the normal switching and branch network operations and breaking electric current of short circuits etc. under special circumstances.Vacuum circuit breakers are particularly suitable for frequent network systems. The circuit breaker is equipped with a spring operating mechanism with reclosing function,reliable action and long life.

● Cable room

The cable compartment is mainly used for the connection of cables,so that single-core or three-core cables can be connected with the simplest unshielded cable logs.At the same time,there is ample space to accommodate lightning arresters, current transformers, and lower grounding switches. According to the standard design, the switchgear door has an observation window and a safety interlocking device,and the bottom plate of the cable room is equipped with a sealing cover and a cable clamp with a bracket of a suitable size. The front door frame of the bottom plate of the cable room can be removed to facilitate cable installation.

● Operating mechanism, interlocking mechanism and low-voltage control room The low-voltage chamber with interlock also functions as a control panel.The low-voltage room is equipped with a spring operating mechanism with a position indicator and a mechanical interlocking device. It can also be equipped with auxiliary contacts, trip coils, emergency trip mechanisms, capacitive live display devices, key locks and electric operating devices. At the same time, the low- voltage room The space can also be used to install control circuits, recording instruments and protection relays. The 750mm wide switchgear is equipped with two identical low-voltage rooms,which can be equipped with more accessories.


Technical parameter

No.

Item

unit

Value

1

Rated voltage

kV

12

2

Rated frequency

Hz

50

3

Rated current of main bus/max.rated current off use

A

630, 125

4

Rated short time withstand current of main

circuit and ground circuit

kA/S

20, 3

5

Rated peak withstand current of main circuit

and ground circuit

kA

50

6

Rated short circuit making current of main circuit and ground circuit

kA

50

7

Load switch full capacity breaking time

time

100

8

Breaking current off use

kA

31.5, 40

9

Rated closed-ring breaking current

A

630

10

Rated transfer current

A

1600

11

Mechanical life

time

2000

12

1min power frequency withstand voltage(peak) phase-phase, phase-earth/isolating distance

kV

42, 48

13

Lightning Impulse withstand voltage(peak)phase-phase phase-earth/isolating distance

kV

75, 85

14

1min power frequency withstand voltage of secondary circuit

kV

2

15

Protection level


IP3X


Outline size

Height H(mm)

Size

Applicable range

1400

Applicable for single-core cable

1600

Applicable for single-core cable

1800

Applicable for three-core cable


Width W(mm)

375

Inlet and outlet

500


750


Depth D(mm)

918



Structure diagram

1. Operating mechanism

2. Load switch

3. Cabinet body

4. Instrument room

5. SF6 voltmeter

6. High voltage indication

7. Fuse

8. Lower grounding switch


Ordering instruction

Please specify when ordering:

● The following technical data should be provided when ordering;

● Main wiring solution number,purpose and single-line system drawing,rated voltage,rated current,rated short-circuit breaking current,distribution room layout drawing and switch cabinet arrangement drawing,etc.;

● Requirements for the control,measurement and protection functions of the switchgear,as well as requirements and schematics for other locking and automatic devices; Model,specipcation and quantity of the main electrical components in the switchgear;

● When the switchgear is used in special environmental condtions,it should be speciPed when ordering;

● Other special requirements must be explained and negotiated in detail in writing before ordering.


Product overview

Increase the capacity of main transformer and improve the power supply capacity of substation.

Improve the power transmission capacty of distrilbution lines and reduce the number of distribution lines.

Increase the power supply radius of medium voltage lines.

Improve the power supply quality of medium voltage power grid.

Reduce the power loss of medium voltage power grid.

Save nonferrous metals and land resources.


Model and meaning


Service condition

● Altitude: ≤1000m Ambient temperature:maximum ambient temperature +40℃, minimum ambient temperature -35℃,maximum daily temperature difference 25℃;

● Relative humidity: daily average relative humidity ≤95%, monthly average relative humidity ≤90%;

● Seismic intensity: 8 degree;

Rated frequency of system: 50HZ;

Annual leakage rate of SF6: ≤0.1%;

Enclosure protection grade: IP3X;

● Note: when ordering this product beyond the above conditions, please consult with our company.


Executive standard

● GB/T156 Standard voltages

● GB 311.1 Insulation co-ordination-Part 1:Definitions,principles and rules;

● GB 38043.6kV~40.5kV High-voltage alternating current switches for rated voltage above 3.6kV and less than 40.5kV GB 3906 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV;

● GB/T 11022 Common specipcations for high-voltage switchgear and controlgear standards;

● GB/T 12,022 Sulfur hexafiuoride for industrial use;

● GB16926 High-voltage alternating current switch-fuse combinations;

● DL/T 404 Indoor AC high voltage switchgear panel Fully metal enclosed ring main unit


Technical parameter

No.

Name

Unit

Load switch cabinet

Switch-fuse combination cabinet

1

Rated voltage

kV

24

2

Rated frequency

Hz

50

3

Rated current

A

630

125

4

Rated load breaking current

A

630

125

5

(3s)Rated short-time withstand current(effective)(3s)

kA

20

6

Rated peak withstand current

kA

50

7

Closed loop breaking current

A

630

8

Maximum transfer current

A


31.5

9

Prospective short-circuit breaking current of fuse(effective)

kA


1400

10

2s short time withstand current of grounding switch

kA

20

11

Rated current breaking times

Time

≥100

12

Mechanical life

Load switch

≥2000

Grounding switch

≥2000

13

Annual leakage rate of SF6 gas

Annual leakage rate of SF6 gas

%

≤0.1






14

 Rated short-time power frequency withstand voltage(effective)

Across isolating distance

kV

64(79)

Switch opening distance

kV

64(79)

Phase to phase, phase to ground

kV

50(65)

rated lightning mpulse withstand voltage (peak)

Across isolating distance

kV

110(145)

Switch opening distance

kV

110(145)

Phase to phase, phase to ground

kV

95(125)

15

Temperature rise limit

K

According to GB/T11022

16

Operating mechanism


Manual, or electric plus manual

17

Operating voltage

V

recommended DC110, optional DC24 or DC48 AC220

18

Creepage distance of insulating parts in cabinet

mm/kV

≥20(24kV)220(calculated as per24kV)

19

Enclosure protection grade


IP3X

20

Clear air distance of bare conductor(phase to ground and phase to phase)

mm

≥180

21

Rated cable charging breaking current

A

25

22

Switching inductance current of no-load transformer

A

0~15A

23

Opening and closing asynchrony

ms

<5

24

Main circuit resistance(excluding fuse)

μΩ

<140

Note:The rated current of the switch-fuse combination is used for the complete combined apparatus of the load switch and the selected fuse.The data outside the brackets refer to the neutral point grounding system through low resistance,and the data inside the brackets refer to the neutral point grounding or ungrounded system through arc suppression coil.


Fully metal enclosed ring main unit

Outline size


Outline diagram of incoming (outgoing)line cabinet

Purpose of switch cabinet

Cabinet width(mm)

Cabinet depth(mm)

Cabinet height(mm)

Incoming cabinet

750

1020

1900

Outgoing cabinet

500

1020

1900

cabinet

500

1020

1900

Buscouple cabinet

500

1020

1900

Vice bus couple cabinet

500

1020

1900

Bus transition cabinet

500

1020

1900

Metering cabinet

1120

1020

1900

Note:

1.The nominal depth of the switch cabinet includes all the outer edges of the door panel (excluding the convex elements, locks, pins, and the convex parts of the door panel)

2.The nominal height of the switch cabinet,including all the outer edges of the head (excluding convex rings)






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