Page 1 - Techno Product Specification
P. 1

Main Switchboards / Motor Control Centres

                General
                The main switchboard / MCC shall be of a free standing, fully modular type system, IPD
                Elsteel Techno or equivalent and comply with the requirements of AS/NZS3439.1:2002.
                The system should also comply with Design Verification Tests as required by IEC61439-
                1 & 2 standards Ed 2 with tests done to include at least two brands of switchgear devices.

                Construction
                Switchboards shall be of the Form xx^ construction (specify Form of segregation Form
                3a, Form 3b, Form 4a, Form 4b). A test report from an independent testing authority shall
                be provided to prove the internal separation in accordance with clause 8.2.7 of AS/NZS
                3439.1.2002. The use of insulation or housing of devices as a form of segregation will
                not be accepted.

                The  degree  of  protection  shall  be  IP55  as  defined  in  AS60529-2004.  Where  louvered
                covers are used the degree of protection shall be a minimum of IP43.

                Structure & Framework
                The main framework shall be made of minimum 2mm electro-galvanised sheet steel. The
                structural  members  of  the  framework  shall  be  screwed  together  to  ensure  rigidity  and
                earth continuity. The structural parts, doors, covers, mounting plates and other internal
                parts  shall  all  be  of  the  modular  type  with  dimensions  in  multiples  of  a  minimum  of
                200mm.  Modular  construction  shall  facilitate  the  ease  of  any  future  extensions  and/or
                modifications. All structural components and cladding shall be of the proprietary type.

                Where back to back switchboards are needed, the depth framework shall be constructed
                using continuous members.

                The maximum height of the framework (including plinth) shall be no more than 2300mm
                above finished floor level. The plinth shall be a minimum of 100mm in height. The plinth
                profiles shall include pre-punched holes to facilitate lifting of the switchboard.

                Cable zones with cable holders shall be provided for every outgoing functional unit tier.
                Switchboards shall suitable for bottom or top cable entry as required. Gland plates shall
                be of the modular type for ease of cabling. Non-ferrous gland plates shall be used where
                applicable.

                Internal Assembly
                Internal separation shall be made up of standard metallic plates and shall provide IP2X
                protection.

                Outgoing  functional  unit  compartments  up  to  600mm  high  shall  be  made  up  of  pre-
                fabricated  mild  steel  plates  folded  to  form  the  cell.  Individual  cell  heights  may  be  in
                increments of 100mm in widths of 400mm or 600mm as required. The side plates of the
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