The characteristics of the shielded cabinet

Shielded cabinet key features as follows: standard BMB19 - shielding effectiveness in line with the state secrecy 2006 'electromagnetic leakage shielding cabinets technical requirements and test methods' C level of the requirements of the structure can meet the demands of international standard 19 inch, and versatility is good, strong compatibility, suitable for large networks, communications, computer room servers, switches, routers and other network equipment of electromagnetic protection. Product size and internal structure can be designed according to the requirements of customers.

shielded cabinet works

when the two sides of the incident electromagnetic wave to the metal plate for air, part of the energy is reflected, the reflection loss; In the process of transmission wave spread in the metal plate to be absorbed by the attenuation of part of the said loss; When is reflected back to the first on the second interface reflection will occur again, so cycle, until all the energy attenuation and transmission.

shielded cabinet composition of

1, the shielding shell: cold-rolled steel plate welded into a whole airtight enclosure, after galvanized anti-corrosion treatment, such as paint

2, shielding door: high-quality materials production and processing meticulously shielding reed, cold rolled steel plate welded into a door leaf of shielding door

3, filter, power filter has wider stop band and high insertion loss

4, ventilation window of waveguide: honeycomb type ventilation waveguide window, at the top of the waveguide is equipped with micro axial flow fan four window, only 1 exhaust air. 41 m3 / min

5, waveguide: phi 12 * 100 waveguide

6, light pipe, phi is 16 * 100 light pipe

7, server support: up and down adjustable position before and after the server installation bent; ( Inside the cabinet shelf is consistent with the ordinary cabinets)

8, and switch electrical outlet

9, roller and a fixed supporting feet

use note

1, shielded cabinet must be reliable grounding, grounding resistance should be 1 or less Ω, grounding piles and shielded cabinet leading-out terminal bolt grounding resistance should be 1 Ω or less.

2, power filter input before the leakage protection switch ( Leakage protection switch can be installed in the shielding indoor distribution box, or use the filter input and power leakage protection switch between installing isolation transformer to solve leakage switch tripping caused by leakage current, or power supply filter can be installed before the input fuse and of the air leakage protection switch. )

electromagnetic shielding cabinet level description

electromagnetic shielding cabinets according to the electromagnetic shielding effectiveness can be classified as class B and class C, C level requirement is higher than B.
B ( FGWS - C2) Magnetic field: 150 KHZ to 930 MHZ, 70 db or higher by GB12190 -
test method 90 standard
C ( FGWS - C1) : magnetic field: 14 KHZ db150khz 95 or 70 db or higher electric field:
200 KHZ ~ 50 MHZ 100 db or higher
the plane wave: 50 MHZ ~ 1 GHZ 100 db or higher microwave:
1 GHZ ~ 10 GHZ 95 db or higher