Phase 4 – Wire L.T. Solid State ( Static) Whole Current ... - WBSEDCL

with 500V DCMegger.14. CIPET/IRSpectrometryMaterialidentification15. IS :13411/1992 Test for waterabsorption(Max. 0.35%)Note: Applicable degree of protection shall be IP 42 or better.Legend: T=Type Test, R=Routine Test, A=Acceptance Test.TTANNEXURE –VIGUARANTEED TECHNICAL PARTICULARS OF THREE PHASE METER BOX :Sl.no Description Detailed requirement Offered1 Name and address of manufacture2 Material Thermosetting Plastic3 Grade of MaterialSMC/DMC Ref.Standard IS:13410-19924. PROPERTIES OF MATERIAL OFCONSTRUCTION OF METER BOX(a)Heat Deflection Temperature(Ref.Std.IS: 13411)150ºC (Minimum)(b) Exposure to flame (Ref.Std.IS: 4249) Self-extinguishing(c) Melting Point (Ref.Std.IS: 13360) Should not melt above 180°C(d) Tensile Strength 50 Mpa (Minimum)(e) Flexural Strength 90 Mpa (Minimum)(f) Modulus of Elasticity 2000 Mpa (Minimum)(g) IZod impact strength notched,230° C 8 KJ/Sq M (Minimum)5. CONSTRUCTIONAL FEATURES OFTHE BOX(a) Clear inside dimensions of Meter Box Refer Drawing.i. Height 400 mmii. Width300 mmiii.Depth200mmiv. Rust and Vermin proofingNeoprene Rubber Gasket NRG(b)Toughened Glass/Transparent(a) Material of transparent coverPolycarbonate with Rubber Gasket(b) Size of opening (Min.)175 mm x 85 mm(c) Min. thickness of cover2 mm(d) Fixing methodFixed from inside with rubber gasketFarthing arrangement1 No. Earthing Bolt of M.S.ZincPassivated of size M8 x 25mm longwith 2 nut & 2 washer each(c) Sealing arrangement Holes for wire seal (2 nos.)(d)MS Cable glands fixed on bothWire entrysides by check nuts to be provided.37