Shielded Door - SIEPEL - #1

SIEPEL has been manufacturing shielded rooms for over 20 years, for various application fields such as sensitive information protection, EMC anechoic chambers, RF and antenna measurements anechoic chambers, compact ranges, TEMPEST shielded rooms, reverberation chambers, etc... As a worldwide recognized expert company in shielded products manufacturing, SIEPEL does not make any compromise on the performances and quality. Since the shielded doors are one of the key parts of the shielded enclosure, SIEPEL has developed through the years high performances products for long term reliability.

Knife edge technology

Any type available (single door, double door, sliding door) All dimensions available on demand Ruggedized construction, suitable for everyday use Multi-point latching, for absolute performances and reliability Over-dimensioned hinges, for perfect mechanical stability High shielding effectiveness performances Easy and flexible ferrite tiles and absorbers installation

I SIEPEL RF shielded doors are based on this state-of-the-art and most appropriate technology to ensure the best performances and [ reliability through the years, on both mechanical properties and shielding effectiveness. The aim of the knife edge technology consists in f maintaining a perfect electrical contact between the perimeters of both door leaf and frame.

| The door leaf (moving part) is a single piece panel consisting of a wooden core structure covered by two Z275 galvanized steel sheets. | This panel is surrounded by a continuously welded brass profile, called knife. The knife profile is obtained from the extrusion of a high ¹ quality « UZ 42 Pb3 Al » brass, compliant with the EN12167 standard. The progressive and optimized shape of the knife ensures a progressive compression oftwo rows ofclipped copper-beryllium fingerstock.

The door frame has the same thickness as the SIEPEL modular "sandwich" shielding panels, and is connected to them using OMEGA shaped joining profiles. A brass extruded profile is continuously welded on the internal periphery of the door frame. This brass profile is a "U" shaped channel (SIEPEL patent) and is fitted with two rows of copper - beryllium fingerstock, which are progressively compressed when closing the door. These clipped contacts are self cleaning and easily changeable.

Those features (continuously welded brass profile, progressive shape of the knife, fingerstock holding system) provide long term reliability and high shielding effectiveness performances. The door leaf and frame are assembled and adjusted in our workshop by specialized skilled technicians, and the door is shipped in the closed position.

The door leaf moves through aluminium hinges, CNC high precision-machined. The hinges are pinched in the door frame for one part. The other part consists ofa unique channel way, clamped on the door leaf.

Consequently, it's impossible for the door to twist, even for very wide doors (up to 4 meters and more) when lined with heavy absorbers (such as ferrite panels and hybrid absorbers), on their internal side. This feature ensures a long term stability and performance of the door.

SIEPEL SAS - ZA de Kermarquer - BP87- 56470 La Trinité-sur-Mer FRANCE Ph.+33(0)2 97 55 74 95- Fax +33(0)2 97 55 84 55 -www.siepel.com Contact : v.kevser@siepel.com - s.ieqat@siepel.com

RF SHIELDED DOOR -17.01.07