Technical Specification for A.C. Single Phase, 2 Wire ... - WBSEDCL

ANNEXURE-VIGUARANTEED TECHNICAL PARTICULARS OF PILFER PROOF METER BOXFOR SINGLE PHASE METERSl.No.1.DescriptionMaterial used for moulded meterboxDetailed requirementEngineering Plastic (AcrylonitrileButadiene Styrene)/Polycarbonate2. Grade of Material Fire Retardant, Self Extinguishing3.(a)(b)(c)Properties of material for meterboxHeat Deflection Temperature(Min. 140 0 C @ 1.8 MPa)(Ref. Std. IS/ASTM)Exposure to flame(Ref. Std..IS/ASTM)Melting Point(Ref. Std. IS/ASTM)100 0 C (Minimum for Engg. Plastic) /140 0 C (Minimum for Polycarbonate)Self-extinguishing180 0 C (Minimum for Engg. Plastic) /210 0 C (Minimum for Polycarbonate)(d) Resistance to heat & fire Glow wire test at 650 0 C(e)Mechanical Propertyi) Tensile Strength (MPa) To be specified by the bidderii) Flexural Strength (MPa) - Do -iii) Modulus of Elasticity (MPa) - Do -4.(a)(b)(c)(d)Constructional features of theboxClear inside dimensions of MeterBoxRefer Drawingi) Height To be specified by the bidderii) Width - Do -iii) Depth - Do -iv) Rust & Vermin proofingMinimum clearance from meteron all 4 sidesMinimum clearance from meteron frontMinimum clearance from back ofmeter(e) Viewing Window :i)Material of transparentcoverNeoprene Rubber Gasket NRGClearance from all sides of the metershould be 30+2 mm except thebottom side which should be 75+5mm from the lower edge of terminalblock.15+2 mm10 + 2 mmii) Size of opening (Min.) 90mm x 75 mmiii)Thickness of mouldedsheetGlass/Polycarbonate with RubberGasket2.0 mm (Minimum)iv) Fixing method Fixed from inside with rubber gasket(f) Earthing arrangement 1 No. Earthing Bolt as prescribedOffered bythe bidder