D A TA S H E E T 3 0 1 / 6 OPEN WOUND POWER RESISTORS 0SERIES FEATURES POWER RATINGS 20 - 220 WATTS 11 WATTAGE SIZES HIGH SHORT TERM OVERLOAD CAPACITY WIDE SELECTION OF MOUNTING STYLES ARCOL Open Wound resistors are produced with materials capable of operating at high temperatures enabling them, size for size, to withstand higher power dissipation than any other protected type. FORMER High quality unglazed porcelain. WINDING Close wound with best quality iron free copper nickel having a thin regular film of oxide over it's entire surface which provides excellent inter-turn insulation. TERMINATIONS Nickel silver bands are fitted to all units; it is assumed that a soldered connection will be made to the lug provided unless it is stated on the order that a mechanical connection is required. In this case, extra nuts and washers will be provided at a small extra charge. RATING All units are rated to dissipate the given wattage when mounted vertically in free air in an ambient temperature of 25C, the approximate temperature rise under these conditions being 300C. When units are to be mounted horizontally, they should be derated to 90% of their nominal rating. RESISTANCE TOLERANCE Semi-adjustable 10%. Fixed 5%. CHARACTERISTICS Fixed J ( 5%) and semi-adjustable K ( 10%). Please consult ARCOL for closer tolerances. Typically less than 100ppm/C depending on type. 20 watts to 220 watts. Electrical porcelain. Oxidised copper nickel alloy (iron free). Nickel silver. Tolerance Temperature coefficients typical values Power dissipation @ 25C Core Element Terminals T Y P E S O F A D J U S TA B L E BA N D S ELECTRICAL SPECIFICATIONS ARCOL TYPE WATT/25C MINIMUM MAXIMUM MAXIMUM NUMBER OF ADJUSTABLE BANDS 020 20 R187 300R 1 030 30 R354 600R 2 040 40 R50 1K48 4 045 45 R2 735R 1 060A 60 R47 1K405 3 TYPE L (Adjustable) For vibration proof adjustment of resistance. Requires access to one side of band only. TYPE S (Fixed) For one off pre-setting of the resistance prior to installation application. Requires access to both sides of the adjusting band. MOUNTING TYPE 060 60 R32 1K300 2 U FC 090A 90 1R77 2K975 6 BAND TYPE L HL HRL UL FCL L BAND TYPE S HS HRS US FCS S 090 90 R24 2K3 3 0130 130 R375 3K87 4 0180 180 R92 5K83 5 0220 220 R7 6K6 6 H HR -- ORDERING SYSTEM O SERIES 1 8 0 WATTAGE RATING H L MOUNTING ARRANGEMENT ADJUSTING BANDS 2 R 2 OHMIC VALUE K TOLERANCE CODE J = 5% K = 10% TOLERANCE THREEMILESTONE INDUSTRIAL ESTATE, TRURO, CORNWALL, TR4 9LG, ENGLAND. Tel +44 (0)1872 277431, Fax +44 (0)1872 222002 http://www.arcol.co.uk E-mail sales@arcol.co.uk Page 1 of 2 0SERIES OPEN WOUND POWER RESISTORS DIMENSIONS B DIMENSIONS (MM) ARCOL TYPE B 0.2 C 0.2 D MAX E MAX F MAX O20 4.76 14.00 3.00 22.14 9.75 O30 4.76 14.00 3.00 22.14 9.75 O40 4.76 14.00 3.00 22.14 9.75 O60A 4.76 14.00 3.00 23.89 12.75 O90A 4.76 14.00 3.00 23.89 12.75 O45 6.35 19.00 4.00 33.78 18.36 O60 6.35 19.00 4.00 33.78 18.36 O90 6.35 19.00 4.00 33.78 18.36 O130 6.35 19.00 4.00 33.78 18.36 O180 9.52 22.00 4.80 36.78 18.36 O220 9.52 22.00 4.80 36.78 18.36 D C E L F G G MAX 15.89 15.89 15.89 19.38 19.38 29.17 29.17 29.17 29.17 29.17 29.17 L MAX 33.50 51.50 103.50 90.78 168.30 52.02 77.52 104.04 155.04 220.32 245.82 MOUNTING ARRANGEMENTS HORIZONTAL MOUNTING (H & HR) ARCOL TYPE O20 O30 O40 O60A O90A O45 O60 O90 O130 O180 O220 H TYPE H TYPE HR N K MR PR M P DIMENSIONS (MM) H 28.9 28.9 28.9 35.8 35.8 46.3 46.3 46.3 46.3 46.3 46.3 K 15.9 15.9 15.9 19.0 19.0 28.6 28.6 28.6 28.6 28.6 28.6 M 44.0 62.0 113.0 106.4 182.4 71.1 96.1 122.1 172.1 236.1 261.1 MR 23.9 41.9 92.9 74.3 150.3 31.0 56.0 82.0 132.0 196.0 221.0 N 3.7 3.7 3.7 4.7 4.7 5.1 5.1 5.1 5.1 5.1 5.1 P 54.2 72.2 123.2 122.0 198.0 90.9 115.9 141.9 191.9 255.9 280.9 PR 34.9 52.9 103.9 90.9 166.9 52.9 77.9 103.9 153.9 217.9 221.0 FERRULE CLIP MOUNTING (FC & GFC) ARCOL TYPE O20 O30 O40 O60A O90A O45 O60 O90 O130 O180 O220 H N K M P DIMENSIONS (MM) H 40.0 40.0 40.0 47.0 47.0 64.0 64.0 64.0 64.0 64.0 64.0 K 17.3 17.3 17.3 25.4 25.4 31.8 31.8 31.8 31.8 31.8 31.8 M 47.8 65.0 115.8 108.0 184.2 69.9 95.3 120.7 171.5 235.0 260.5 N 4.1 4.1 4.1 4.6 4.6 6.4 6.4 6.4 6.4 6.4 6.4 P 60.5 76.2 127.0 120.7 196.9 82.6 108.0 133.4 184.2 247.7 273.2 UPRIGHT MOUNTING (U) ARCOL TYPE O20 O30 O40 O60A O90A O45 O60 O90 O130 O180 O220 M P H N K DIMENSIONS (MM) H 39.7 57.7 108.7 95.7 171.7 61.7 86.7 112.7 162.7 226.7 251.7 K 19.0 19.0 19.0 19.0 19.0 34.0 34.0 34.0 34.0 34.0 34.0 M 25.4 25.4 25.4 25.4 25.4 44.5 44.5 44.5 44.5 44.5 44.5 N 4.0 4.0 4.0 4.0 4.0 5.0 5.0 5.0 5.0 5.0 5.0 P 34.5 34.5 34.5 34.5 34.5 60.0 60.0 60.0 60.0 60.0 60.0 T E R M I N AT I O N D E TA I L S TYPE G Tinned Lug TYPE W Flexible Copper Wires TYPE FC Live Ferrule TYPE GFC Dead Ferrule THREEMILESTONE INDUSTRIAL ESTATE, TRURO, CORNWALL, TR4 9LG, ENGLAND. Tel +44 (0)1872 277431 Fax +44 (0)1872 222002 http://www.arcol.co.uk E-mail sales@arcol.co.uk CERTIFICATE NUMBER FM31218 The information contained herein does not form part of a contract and is subject to change without notice. It is the responsibility of the customer to ensure that the component selected from our range is suitable for the intended application. If in doubt please ask us. Page 2 of 2