Protective Telecommunications Enclosure Systems and Methods

Abstract

Protective containers for electronic equipment, and methods of testing, use, and/or manufacture thereof, are provided. The cabinets provide a HEMP protection level to electronic equipment housed therein that meets a HEMP protection level according to MIL-STD-188-125-1.

What is claimed is: 
     
         1 . A method of producing a HEMP protected enclosure for holding an electronic device, comprising:
 building a test HEMP protected enclosure according to an enclosure design;   performing an acceptance testing procedure on the test HEMP protected enclosure;   determining whether the test HEMP protected enclosure meets a HEMP protection level according to MIL-STD-188-125-1; and   producing a plurality of HEMP protected enclosures according to the enclosure design if the test HEMP protected enclosure meets the HEMP protection level according to MIL-STD-188-125-1;   wherein the test HEMP protected enclosure comprises a cabinet width dimension of not more than about 90 inches wide, a cabinet height dimension of not more than about 94 inches, and a cabinet depth dimension of not more than about 30 inches.   
     
     
         2 . The method according to  claim 1 , wherein the test HEMP protected enclosure defines an internal clear space depth dimension of at least about 26.75 inches. 
     
     
         3 . The method according to  claim 1 , wherein the test HEMP protected enclosure comprises a cabinet width dimension of about 65 inches and a cabinet depth dimension of about 30 inches. 
     
     
         4 . The method according to  claim 1 , wherein the HEMP protection level provides a shielding effectiveness of at least 80 dB attenuation at 1 GHz, with a residual peak current of less than 10 A, a rate of rise less than 1.0e+0.7, and a root action of less than 1.6e−01 in response to a signal incident on the HEMP protected enclosure, the signal simulated by an input waveform into a short circuit having a risetime of less than 20 ns and a full width half maximum (“FWHM”) of between 500 and 550 ns. 
     
     
         5 . The method according to  claim 1 , wherein the enclosure provides a HEMP protection level to the telecommunications device of at least 100 dB attenuation at 1 GHz. 
     
     
         6 . The method according to  claim 1 , wherein the HEMP protected enclosure further comprises:
 a power input point of entry that facilitates entry of a power cable to the interior space from a location external to the cabinet; and   a fiber optic cable point of entry that facilitates entry of a fiber optic cable to the interior space from a location external to the cabinet.   
     
     
         7 . The method according to  claim 1 , wherein the HEMP protected enclosure further comprises:
 a converter; and   a battery coupled with the converter.   
     
     
         8 . The method according to  claim 1 , wherein the HEMP protected enclosure further comprises a power filter. 
     
     
         9 . The method according to  claim 8 , wherein a clean output of the power filter is disposed within the interior space of the cabinet. 
     
     
         10 . The method according to  claim 8 , wherein a dirty input of the power filter is disposed external to the cabinet. 
     
     
         11 . The method according to  claim 1 , wherein the cabinet comprises a front opening configured to receive the electronic device therethrough. 
     
     
         12 . The method according to  claim 11 , wherein the front opening of the cabinet comprises at least one clear opening of at least about 23.5 inches in width. 
     
     
         13 . The method according to  claim 1 , wherein the enclosure provides a HEMP protection level to the telecommunications device of at least 80 dB attenuation at 1 GHz. 
     
     
         14 . The method according to  claim 1 , wherein the HEMP protected enclosure further comprises:
 a power input point of entry that facilitates entry of a power cable to the interior space from a location external to the cabinet, the power input point of entry disposed at a top surface of the enclosure; and   a fiber optic cable point of entry that facilitates entry of a fiber optic cable to the interior space from a location external to the cabinet, the fiber optic cable point of entry disposed at a top surface of the enclosure.   
     
     
         15 . The method according to  claim 1 , wherein the HEMP protected enclosure further comprises:
 a power cable coupled with the power input point of entry; and   a fiber optic cable coupled with the fiber optic cable point of entry.   
     
     
         16 . A method of providing HEMP protection to a telecommunications device, comprising:
 placing the telecommunications device in a HEMP protected enclosure, wherein the enclosure comprises a cabinet having an interior space, and a rack disposed within the interior space, the rack configured to support the telecommunications device, the cabinet comprising a cabinet width dimension of not more than about 90 inches wide, a cabinet height dimension of not more than about 94 inches, and a cabinet depth dimension of not more than about 30 inches, and the enclosure provides a HEMP protection level to the telecommunications device that meets a HEMP protection level according to MIL-STD-188-125-1; and   closing a door over a front opening of the HEMP protected enclosure.   
     
     
         17 . The method according to  claim 17 , wherein the test HEMP protected enclosure defines an internal clear space depth dimension of at least about 26.75 inches. 
     
     
         18 . The method according to  claim 17 , wherein the test HEMP protected enclosure comprises a cabinet width dimension of about 65 inches and a cabinet depth dimension of about 30 inches. 
     
     
         19 . The method according to  claim 17 , wherein the HEMP protection level provides a shielding effectiveness of at least 80 dB attenuation at 1 GHz, with a residual peak current of less than 10 A, a rate of rise less than 1.0e+0.7, and a root action of less than 1.6e−01 in response to a signal incident on the HEMP protected enclosure, the signal simulated by an input waveform into a short circuit having a risetime of less than 20 ns and a full width half maximum (“FWHM”) of between 500 and 550 ns. 
     
     
         20 . The method according to  claim 17 , wherein the enclosure provides a HEMP protection level to the telecommunications device of at least 100 dB attenuation at 1 GHz.