KYN28-12 indoor metal-clad withdrawable medium Voltage switchgear is a complete power distribution device for 7.2-12kV, 3-phase AC 50Hz, single busbar and single busbar segmented system.
It is mainly applicable in power plant, substation, mineral enterprise to receive and distribute power with the functions of controlling,protecting and monitoring circuits; and can also be used at the sites with frequent operations.
Complies with IEC60289, GB3906 and DL404 standard.
Metal-clad and partition completely, effectively prevent faults spreading.
The low voltage and high voltage section is completely separated.
Enclosure protection degree of IP4X, protect against electric shock and ingress of solid foreign bodies.
Simple but effective interlocking prevents misoperation.
Space is provided for multiple cable connections.
Front-face and double-face maintenance.
Withdrawable part of the same design are mutually interchangeable, exchanging VCB is very simple.
The enclosure is made of Aluminium-zinc plated steel with high precise dimension, short production cycle, excellent mechanical strength and nice appearance.
The switchboard door is sprayed with plastic, also has strong capacity of impact resistance and corrosion protection.
Various vacuum circuit breakers can be used, i.e VD4 from ABB, 3Ah% from Siemens, VB2 from GE, many other domestic breakers (VS1, VH1, VK, ZN28) and etc.
The basic structure of the switchgear panel is comprised with the panel itself and draw-able part.
The panel is consisted by four separated compartments: truck, busbar, cable and low-voltage compartment.
And the draw-able units can be divided into the following units according to its own functions.
HV fuse truck
Lightning arrester truck etc.
|VCB Switchgear||F-C Switchgear|
|Rated Voltage kV||7.2 12||7.2 12|
|Rated Power-frequency Withstand Voltage (1min) kV||32 42||32 42|
|Rated Lightning Impulse Withstand Voltage kV||60 75||60 75|
|Rated Frequency Hz||50||50|
|Main Busbar Rated Current A||...4000||...4000|
|Branch Busbar Rated Current A||...4000||...400|
|Rated Short-time Withstand Current (rms) kA||...40||4kA/4s|
|Rated Peak Withstand Current kA||...100||10|
|Enclosure Protection Level||IP4X||IP4X|
Dimension (for VD4 breaker)
|Width (mm)||Rated Current 1250A&below||800, 650|
|Rated Current 1600A&above||1000|
|Depth (mm)||Front Maintenance||1350|
|F-C Switchgear (mm)||2200 x 650 x 1560|
|(Height, Width, Depth)|
Ambient temperature: -10℃ to +40℃.
Altitude: ≤ 1000m.
Relative humidity:daily average ≤ 95% ,monthly ≤ 90%.
Shock of earthquake:less than 8 magnitude.
Should not be used in fire, explosion, earthquake and chemical corrosion environments.
Note: Please consult with manufacture for special condition and requirements.