IS 434 Pt.1-1964

标准号：IS 434 Pt.1-1964
发布日期：1964/8/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：1.1 This standard covers die requirements for the following types of vulcanized rubber-insulated cables and flexible cords with copper conductors.1.1.1 Cables for Fixed Wiringa) Braided and compounded;b) Lead-alloy sheathed;c) Lead-alloy sheathed, with earth continuity conductor;d) Hard metal sheathed;e) Tough-rubber sheathed;f) Tough-rubber sheathed, with earth continuity conductor;g) Armoured ( other than lead-alloy sheathed ); h) Lead-alloy sheathed, armoured;j) Flame-retarding cables; k) Fire-resisting cables; and m) Weather-proof cables ( house service overhead system cables ).1.1.2 Flexible Cablesa) Braided and compounded,b) Tough-rubber sheathed, andc) Welding cables.1.1.3 Flexible Cordsa) Twisted and circular artificial silk or glace cotton braided,b) Braided and compounded (' workshop ' type ),c) Tough-rubber sheathed, andd) Unkinkable flexible cords.1.2 The 250/440 V grade cables and flexible cords are suitable for use on single-phase or three-phase systems, where the voltage between each conduc-tor and earth does not exceed 250 V (that is, solidly earthed 440 V systems ).1.3 The 650/1 100 V grade cables and flexible cords are suitable for use on medium voltage three-phase systems, where the voltage between the conductor and earth does not exceed 650 V (that is, solidly earthed 1 100 V systems). These may also be used on single-phase systems in special conditions, where greater degree of safety is required.1.4 The 3.3, 6.6 and 11 kV cables are suitable for three-phase systems, where the voltage between phases does not exceed 3.3, 6.6 and 11 kV respectively. These cables are suitable for working on systems with neutral point earthed.