IS 6680 : 1992 Railway carriage fans

1 Scope

1.1 This standard specifies the requirements and methods oftests for ac and dc fixed, swivelling and bracket type fans,including the associated speed regulators, for use in railwaycarriages.

It covers This fans:

a) 24 V dc fans for conventional 24 V coaching stock;

b) 110 V dc fans for self generating 110 V coaching stock, anddc electrical multiple units;

c) 110 V ac fans for coaching stock with end-on-generation andmid-on-generation coaches and also for 110 V self-generatingcoaches and dc EMU stock where invertors or motor alternator setsare provided for 110 V ac 50 cycles feed for working carriage fans;and

d) 140 V ac fans for ac electrical multiple units.

2 References

List of referred Indian Standards IS 5 :1978Colours for ready mixed paints and enamels

IS 151 :1985Ready mix paint, spraying, finishing, stoving,enamel for general purposes, colour as required

IS 210 :1978Grey iron castings

IS 226 :1975Structural steel (standard quality)

IS 280 :1978Mild steel wires for general engineeringpurposes

IS 302 :1979Safety of household and similar electricalappliances : Part 1 General requirements

IS 319 :1989Free cutting brass bars, rods and sections

IS 349 :1981Lacquer, cellulose nitrate, clear, finishing,glossing for metal

IS 549 :1974Split pins

IS 648 :1980Non-oriented electrical steel sheets and stripsfor magnetic circuits

IS 649 :1963 Methods for testing steel formagnetic circuitof power electrical apparatus

IS 694 :1990PVC insulated cables for working voltages up toand including 1 100 V

IS 713 :1981Zinc base alloy ingots for die casting

IS 1079 :1988Hot rolled carbon steel sheet and strip

IS 1137 :1990Thickness of sheet and diameters of wires

IS1248Direct acting indicating analogue electricalmeasuring instruments and their accessories :

Part 2 :1983Ammeters and voltmeters

Part 3 :1983Wattmeters and varmeters

IS 1271 :1985Thermal evaluation and classification ofelectrical insulation

IS 1300 :1966Phenolic moulding materials

IS 1365 :1978Slotted countersunk head screws

IS 1366 :1982Slotted cheese head screws

IS 1378 :1987Oxidized - copper finishes

IS 1401 :1970Accessibility test probes

IS 1573 :1986Electroplated coatings of zinc on iron and steel

IS 1772 :1973Electroplated coatings of copper

IS 1885 : Part 55 :1981 Electrotechnical vocabulary : Part 55Electricfans

IS 2016 :1967Plain washers

IS 2102 : Part 1 :1980 General tolerances for dimensionsand form andposition : Part 1 General tolerances for linearand angular dimensions

IS 2464 :1963Built-up mica for electrical purposes

IS 3024 :1965Electrical steel sheets

IS 3980 :1982Porous metal powder oil-impregnated bearings

IS4218ISO metric screw threads :

Part 1 :1976Basic and design profiles.

Part 2 :1976Diameter pitch combinations

Part 3 :1976Basic dimensions for design profiles

Part 4 :1976Tolerancing system

Part 5 :1976Tolerances

Part 6 :1979Limits of sizes for commercial bolts and nuts(diameter range 1 to 52 mm)

IS 4454 : Part 1 :1981 Steel wires for cold formed springs: Part 1Patented and cold drawn steel wires - Unalloyed

IS 5270 :1969Rubber grommets for general purpose

IS 5692 :1988Tolerances for radial roiling bearings

IS 5885 :1977Copper commutator bar

IS 5935 :1970Radial internal clearances in unloaded radialrolling bearings

IS 6455 :1972Single row radial ball bearings

IS 7283 :1974Hot rolled bars for production of bright bars