Page 3 - Techno_Modular_Switchboards
P. 3

Mounting Plates
        Mounting plates shall be sized to suit the dimensions and weight of the installed equipment and shall be made of 2mm thick steel,
        pretreated and powder coated finish white.

        Gland Plates

        Detachable gland plates for termination of conduits and cables shall be provided. Gland plates shall be of aluminium, minimum
        thickness of 3mm and for single core cables. Allow spare space for future terminations.

        Cable Entries

        Provision for top or bottom cable entries shall be included in the design.
        Adequate space within each compartment and cable zones shall allow for neat cable routing, cleating, supporting, and
        termination.
        Removable earthed gland plates (aluminium) shall be provided.
        Cable zones shall include provisions for future cabling and suitable fixtures such as cable supports, trays, or slotted PVC cable
        ducts for smaller cables.

        Earthing
        All metallic parts of the switchboard/MCC and associated equipment shall be bonded to the protective earth conductor.
        All earthing conductors shall comply with AS/NZS 61439.1 & AS/NZS 3000.

        Segregation

        Each of the assemblies shall comply with the requirements specified in the schedules and/or drawings of Form of Separation
        under the following minimum standards.
        Switchboards and MCCs rated at 800 Amps or higher must meet at least Form 3B, or as otherwise specified in this document.
        Internal separation methods shall be acceptable for assemblies, provided they adhere to the requirements of AS/NZS 61439.2

        Finish
        Switchboards shall be finished with a textured epoxy-polyester powder coat in RAL 7032 Grey or RAL 2000 Orange with a minimum
        thickness of 60 microns.
        Corrosion resistance shall comply with AS/NZS 61439.1:2016, clause 10.2.2.2.
        The powder coating process shall include degreasing, iron phosphating, rinsing, passivation, drying, electrostatic powder coating,
        and tempering.
        Maintenance of paintwork shall follow the manufacturer’s documented recommendations.

        Requirement:          Cubicles shall be painted internally and externally
        Internal Colour:      White
        External Colour:      RAL 7032 Grey
                              RAL 2000 Orange
                              Other colours by request
        Type-Epoxy polyester powder coat, semi-gloss, smooth finish, ≥ 60μm thick


        Busbars
        Busbar assemblies shall meet the ratings indicated on the Single Line Diagram and Busbar support arrangements shall be
        independent of switchgear.
        Busbars shall be of rectangular cross section with a radius edge and be of 2 or more bars per phase arrangement for both the
        main and vertical bars. The main busbar rating shall be the same throughout the entire length of the switchboard. The busbar
        system shall be design verified for a fault level of (specify fault level) xxx kA for 1s. The allowed temperature rise of the design
        verified busbar system should be in accordance with AS/NZS 61439.1:2016
        The connections including the conductors and tap-off connectors from the vertical busbars to the functional unit protective
        devices shall have been part of a conditional short circuit withstand test and shall not be less than a prospective fault level of the
        busbar system.




                                               1300 556 601 | ipd.com.au | 27-05-2025
   1   2   3   4