ALTERNATING CURRENT. Wire H.P x x E x % EFF x P.F K.W x x E x P.F. K.V.A x x E I x E x 2 x P.F I x E x % EFF x P.
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1 Solutions Electrical (Distribution) Limited vondale Business Centre Woodland Way Kingswood Bristol BS15 1W Tel: Fax: Tel: Fax: To Find mperes when Horsepower is known mperes when Kilowatts is known mperes when K.V. is Known Kilowatts Direct H.P x 7 E x % EFF K.W x 00 E I x E SinglePhase H.P x 7 E x % EFF x K.W x 00 E x K.V. x 00 E I x E x LTERNTING CURRENT TwoPhase* Four Wire H.P x 7 x E x % EFF x K.W x 00 x E x K.V. x 00 x E I x E x x ThreePhase H.P x x E x %EFF x K.W x x E x K.V. x x E I x E x 1.73 x K.V I x E 00 I x E x 00 I x E x 1.73 Horsepower (output) I x E x % EFF 00 I x E x % EFF x 00 I x E x x % EFF x 00 I x E x 1.73 x % EFF x 7 7 I = mperes E = Volts % EFF = per cent efficiency = Power Factor.8 K.W = Kilowatts K.V. = KiloVoltmperes H.P = Horse Power * For three wire, two phase circuits the current in the common conductor is times that in either of he other two conductors. 7 7
2 Tel: Fax: SYMBOLS: V = VOLTGE IN VOLTS I = CURRENT IN MPERES R = RESISTNCE IN OHMS P = POWER IN WTTS kw Ratings HP.75 1 To BS775 FL Fuses BS88 D.O.L. 15 ssisted kw Ratings HP To BS775 FL Fuses BS88 D.O.L ssisted 0 0 kw Ratings HP To BS775 FL Fuses BS88 D.O.L ssisted kw Ratings HP To BS775 FL Fuses BS88 D.O.L ssisted kw Ratings HP To BS775 FL Fuses BS88 D.O.L ssisted kw Ratings HP To BS775 FL Fuses BS88 D.O.L ssisted
3 Tel: Fax: Inches to millimetres (mm) 5. Millimetres to inches Feet to metres (m) Metres to feet (ft) 3. Yards to metres 0.91 Metres to yards (yd) Miles to kilometres (km) Kilometres to miles 0.1 Square inches to square millimetres (mm²) 5. Square millimetres to square inches (inch²) Square yards to square metres (m²).387 Square metres to square yards (yd²) 9 Cubic inches to cubic centimetres (cm³).387 Cubic centimetres to cubic inches (inch³) 0.0 Pounds to kilograms (kg) 0.53 Kilograms to pounds (lb).0 Tons (,0 lb) to kilograms (kg) 1,0.05 Kilograms to tons (,0 lb) Ounces (avoirdupois) to grams 8.3 Grams to ounces (avoirdupois) Gallons to litres (l).51 Litres to gallons 0.0 Force N (Newtons) to lbft 0.5 1N = 1 kg (mass) accelerated at 1 metre/sec. 1 NM = 1 J (Joule) to calorie 0.39 Horse power to kilowatts (kw) 58 Kilowatts to horse power (h.p) W (watt) = 1 J/S tmospheres to lb per square inch (lb/inch²) bar = 1 kg/cm² = 735.mm Hg = 1.lb/inch²
4 Tel: Fax:
5 Tel: Fax: Rating 30V 00V 15V 0V 90V kw Cosϕ η % Rated Fuse Y/Δ starting D.O.L Rated Fuse Y/Δ starting D.O.L Rated Fuse starting D.O.L BS Y/Δ BS Rated Fuse Y/Δ starting D.O.L Rated Fuse Y/Δ starting D.O.L (pproximate figures for squirrelcage motors). Minimum fuse size for shortcircuit protection of 3phase motors. The maximum size is determined by the requirements of the switchgear or overload relay The rated motor currents are for standard 10 r.p.m. 3phase enclosed ventilated and totally enclosed fancooled motors. D.O.L. starting : maximum starting current x rated motor current. Maximum starting time : 5 s. Y/Δ starting : maximum starting current x rated motor current. Maximum starting time : 15 s. set overload relay in the phase lead to 0.58 x rated motor current. Rated fuse currents for Y/Δ starting are also valid for 3phase motors with slipring rotors. For higher rated currents, starting currents / longer starting times, larger fuses will be required. Table is valid for 'slow' / 'gl' fuses (DIN VDE 03) For NH fuses with am characteristic, fuses = rated current selected.
6 Tel: Fax: C hp KLOCKNER BB LLEN CUTLER CLIPSL GUT SIEMENS SPRECHER+ SCHUH STROMBERG TELE 3 MOELLER BRDLEY HMMER MECNIQUE kw 5 DIL EM B M9/ MCI3 3FT C9 LC1K09 5 DIL 00 M B9 009N HR090N C9/ CL00 3TF30 C39 OK00W LC1D DIL 00 M B1 01N HR13N C1/ CL013 3TF31 C31 OK0W LC1DI 7.5 DIL0M B 018N HR17 C/ CL03 3TF3 C3 OK01W LC1D DIL0M B5 0N HR5N C5 CL53 3TF33 C33 OK1W LC1D DIL 1M B30 030N HR3300N C35 CL03 3TF3 C330 OKW LC1D DIL 1M 038N HR 000N C38 CL053 3TF35 C337N11 OK0W 30 DIL M B 05N HR 00N CL03 3TF C33N11 OKYM5 LC1D DIL M 00N HR50N C CL073 3TF7 C30N11 OKYM3 LC1D11 37 DIL 3M B3 075N CE15KN C5 CL083 3TF8 C37N11 LC1D DIL3M EH C CL093 3TF9 C8511 OKYM75 LC1D11 55 DILM EH0 0B1N CE15MIN C CL3 3TF C511 OKYM90 LC1F DIL M EH15 CE15NN C115 3TF51 CE11 OKYM1 LC1F1 90 DILM EH1 0B1N CE15PN C1 CK08B 3TF5 C170E11 OKYM175 LC1F DIL M EH0 C1 3TF53 C LC1F DIL8M 0BN C CK09B 3TF5 C OKYM00 LC1F DIL8M EH 0B300N CE15SN 3TF55 C0 OKYM LC1F DILM EH370 0B00N C00 CKB 3TF5 C0 OKYM00 LC1F DIL M CGYN3 CK11B 3TF57 C0 OKYM0 LC1F0 335 DIL1M EH5 0B00N CGYBN3 C0 CK1B 3TF8 C55 OKYM LC1F 00 DIL 1M EH0 CKN3 CK13B 3TF9 C58 OKYM0 LC1F7 NOTE: This serves as a guide only. Technical specifications should be checked against the relevant manufacturers brochures. Solutions Electrical (Distribution) Limited Registered Office: 37B Church Road, Frampton Cotterell, Bristol, BS3 Q Registered in England No VT Registered 8113
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