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KYN28A-12 Metal-Claded Withdrawable AC Metal-Enclosed Switchgear

Short Description:


Product Detail

Product Tags

General
KYN28A-12(Z)(GZS1) type metal-claded withdrawable AC metal-enclosed switchgear, it is suitable for three-phase AC 50Hz power system, used to receive and distribute electric energy and control, protect and monitor the circuit.
This product meets the standards: GB3906 "Alternating-current metal-enclosed switchgear and controlgear for rated voltage above 3.6kV and up to and including 40.5kV", GB/T11022 "Common specifications for high-voltage switchgear and controlgear standards", lEC60298 "A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52kV" .

Normal Use Conditions
● Ambient air temperature: -15℃~+40℃.
● Humidity conditions: Daily average relative humidity: ≤95%.
The daily average water vapor pressure ≤2.2kPa.
The monthly average relative humidity is 90%.
The monthly average water vapor pressure is 1.8kPa.
● Altitude: <1000m.
● Earthquake intensity: ≤8 degrees.
● The surrounding air should not be significantly polluted by corrosive or combustible gas, water vapor, etc.
● Places without frequent severe vibration.
● When used under normal conditions exceeding GB3906, the user and the manufacturer shall negotiate.

Type Description
2
Product Features
● The enclosure of the product is entirely made of aluminum-zinc-coated steel sheet processed by machine tools and assembled with bolts after multiple bending and forming. It has high mechanical strength, which effectively ensures the neatness and beauty of the product. The cabinet door is coated with plastic. It has strong impact resistance and corrosion resistance, and the product enclosure with IP4X protection level.

● The main switch of this product can be equipped with VD4 type vacuum circuit breaker and C3 series fixed load switch produced by ABB, and it can also be equipped with a variety of domestic series vacuum circuit breakers (such as VS1, VH1, VK, ZN28) to replace foreign similar product.

● Regardless of the circuit breaker selected, the air insulation distance of the bare conductor can be guaranteed to be greater than 125mm, and the composite insulation is greater than 60mm. The circuit breakers have the unique advantages of long life, high parameters, low maintenance, and small size. KYN28-12 metal-claded center-mounted metal-enclosed switchgear is suitable for 3.6-12kV three-phase AC 50Hz power grids, which is used for receiving and distributing electric energy, and for controlling, monitoring and protecting circuits. It can be used for single bus, single bus section system or double bus system. The switchgear complies with IEC298 "A.C. metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to and including 52kV", IEC694 "Common clauses for high-voltage switchgear and controlgear standards" China GB3906 " Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV" and DL404 "Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV" Germany 0670 "A.c. switchgear and controlgear for voltages above 1kV" and other standards. And it has perfect and reliable anti-misoperation function.

Main Technical Parameters

Rated voltage

kV

3.6, 7.2, 12

Rated frequency

Hz

50

Rated current of circuit breaker

A

630, 1250, 1600, 2000, 2500, 3150

Rated current of switchgear

A

630, 1250, 1600, 2000, 2500, 3150

Rated short time withstand current (4s)

kA

20, 25, 31.5, 40

Rated peak withstand current (peak value)

kA

50, 63, 80, 100

Rated short circuit breaking current

kA

20, 25, 31.5, 40

Rated short circuit making current (peak value)

kA

50, 63, 80, 100

Rated insulation level1min power frequency withstand voltage Phase-to-phase, phase-to-earth

kV

25, 30, 42

  Across open contacts

kV

27, 34, 48

Lightning impulse withstand voltage (peak value) Phase-to-phase, phase-to-earth

kV

40, 60, 75

  Across open contacts

kV

46, 70, 85

Protection level    

IP4X outside the shell, IP2X when the compartment and circuit breaker door are opened

Functions

The switchgear structure is shown in the figure below. The all-metal modular assembly structure, the cabinet body is made of imported aluminum-zinc plate with strong anti-corrosion ability, without surface treatment, processed by CNC high-precision equipment, using advanced multi-folding technology, connection It is connected with blind rivet nuts and high-strength bolts, with high precision, light weight and good strength.

The switchgear can be equipped with the ZN63A-12 (VS1) series, VD4 series, ZN65 series and other vacuum circuit breakers produced by Ghorit, with wide adaptability and strong interchangeability. The handcart is equipped with a working position, a test position, and each position has a positioning and display device, which is safe and reliable.

The cable room can be equipped with up to 9 single-core cables. The equipment has reliable mechanical and electrical locks to fully meet the "five prevention" requirements. Each room is equipped with pressure relief channels to ensure personal safety during operation.

3
Overall Dimensions
4

Height B

 

2300(2200)

Width A

Rated current up to 1250A

800

Rated current 1600A and above(altitude 4000m rated current 1250A)

1000

Depth C

Cable inlet and outlet

1500

Overhead inlet and outlet

1660

Installation Dimensions
5

Switchgear width A

Switchgear depth B

L1

L2

L3

L4

800

1500 cable

530

630

150

490

 

1660 overhead

530

630

310

650

1000

1500 cable

730

830

150

490

 

1660 overhead

730

830

310

650

Main Circuit Schematic Drawing

scheme NO.

01

02

03

04

05

06

main circuit schematic drawing  1  2  3  4  5  6
switchgear dimensions (W*D*H)mm

800×1500×2300

1000×1500×2300

rated current (A)

630~3150

main components vacuum circuit breaker

1

1

1

1

1

1

current transformer LZZBJ9 series

2

2

2

3

3

3

earth switch JN15  

1

1

 

1

1

arrester HY5W    

3

   

3

circuit name

incoming, outgoing

remarks 1. rated current 1600A and above, the switchgear width is 1000mm.2. altitude 3000~4000m plateau type switchgear rated current 1250A, the switchgear width is 1000mm.

scheme NO.

07

08

09

10

11

12

main circuit schematic drawing  7  8  9  10  11  12
switchgear dimensions (W*D*H)mm

800×1500×2300

1000×1500×2300

rated current (A)

630~3150

main components vacuum circuit breaker

1

1

1

1

1

1

 

current transformer LZZBJ9 series

2

3

3

3

2

2

 

voltage transformer

JDZ10-10

2

JDZ10-10

2

 

 

JDZ10-10

2

JDZ10-10

3

JDZ10-10

3

 

HV fuse RN2-10

3

3

3

3

3

3

  earth switch JN15

 

 

1

 

 

1

  arrester HY5W

3

 

 

3

 

 

circuit name

cable incoming+PT

remarks Rated current 1600A and above, the switchgear width is 1000mm.

scheme NO.

13

14

15

16

17

18

main circuit schematic drawing  7  8  9  10  11  12
switchgear dimensions (W*D*H)mm

800×1500×2300

1000×1500×2300

rated current (A)

630~3150

main components

voltage transformer

JDZX10-10

3

JDZX10-10

2

JDZX10-10

2

JDZX10-10

3

JDZX10-10

3

JDZX10-10

2

 

HV fuse RN2-10

3

3

3

3

3

3

  arrester HY5W

3

 

 

3

 

 

circuit name

voltage measurement+ arrester

remarks Rated current 1600A and above, the switchgear width is 1000mm.

scheme NO.

19

20

21

22

23

24

main circuit schematic drawing  7  8  9  10  11  12
switchgear dimensions (W*D*H)mm

800×1500×2300

1000×1500×2300

rated current (A)

630~3150

main components

voltage transformer

 

 

 

 

JDZX10-10

2

JDZX10-10

2

 

 

 

 

 

HV fuse RN2-10

 

 

3

3

 

 

  arrester HY5W

 

 

 

 

 

1

circuit name

disconnector+

connection (left)

disconnector+

connection (right)

disconnector+

connection (left)+voltage measurement

disconnector+

connection (right)+voltage measurement

outlet convert phase

disconnector outlet convert phase

remarks Rated current 1600A and above, the switchgear width is 1000mm.

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