KYN28A-24 armoured transfer type AC metal closed switch equipment is mainly used in three-phase AC rated voltage 24kV, rated frequency 50HZ power system. It is mainly used in power plants, substations, industrial and mining enterprises, railway transportation and high-rise buildings in the allocation and distribution of electric energy, and has functions of control, protection and monitoring.
This switchgear meets the standard of GB3906 and IEC298 (1009).
◇Main Features：
●The switchgear is made up of two parts, the cabinet and the removable parts. The appearance is flat, simple and beautiful. It has a simple and reliable "five guard" interlocking function, and prevents misoperation。
●The two wire grooves in high pressure indoor use all metal protection, and the operation is safer and more reliable。
●A heater can be installed in the circuit breaker room and the cable room to prevent condensation and corrosion。
●It can be equipped with voltage transformer hand car, isolated handcart, fuse handcart and so on. The same use handcart has interchangeability。
●All devices are properly equipped with the same place for inspection。
●A substation is designed to form a complete set of equipment with various functions. It needs less space and can be applied to any premises inside and outside the house。
●Depending on the customer's needs, it is easy to fit with the structure, easy to install and locate in any floor。
●The charged part is properly insulated and all components are installed in a metal box and are safe for personnel or equipment。
◇Technical Parameter：
|
Serial number
|
Name
|
Company
|
Numerical value
|
|
1
|
Rated voltage
|
kV
|
24
|
|
2
|
Rated current
|
A
|
630 1250
1600 2000 2500 3150
|
|
3
|
Rated frequency
|
Hz
|
50
|
|
4
|
1min power frequency tolerance voltage phase, relative ground
|
kV
|
65
|
|
5
|
1min power frequency tolerance voltage isolation (fracture)
|
kV
|
79
|
|
6
|
Lightning impulse tolerance voltage peak
Interphase, relative
|
kV
|
125
|
|
7
|
Lightning impulse tolerance voltage peak
(fracture)
|
kV
|
145
|
|
8
|
The main busbar rated current
|
A
|
630 1250
1600 2000 2500 3150
|
|
9
|
Branch bus rated current
|
A
|
630 1250
1600 2000 2500 3150
|
|
10
|
Rated short circuit breaking current
|
kA
|
20 25
31.5
|
|
11
|
Rated short-time tolerance current / rated short duration
|
kA/4S
|
20 25
31.5
|
|
12
|
Rated peak tolerance current
|
kA
|
50 63
80
|
|
13
|
Rated short-circuit closing current
|
kA
|
50 63
80
|
|
14
|
Internal arc tolerance current
|
kA/0.5S
|
31.5
|
|
14
|
1min auxiliary circuit power frequency tolerance voltage
|
V
|
2000
|
|
15
|
Protection grade
|
|
IP4X (open door opening of circuit breaker or IP2X between compartments)
|
◇Product size：
|
Beijing
|
Width（mm）
|
Height（mm）
|
Depth（mm）
|
|
KYN28A-24
|
1000
|
2430
|
1860
|