RWST www.vishay.com Vishay Sfernice Wirewound Resistors, Industrial High Power, Vitreous Tubular FEATURES 95 W to 800 W at 25 C NF C 93-214 RB 25 x 168, RB 30 x 250 Rugged construction for use in severe environmental conditions Material categorization: for definitions of compliance CS Type 1 Collars please see www.vishay.com/doc 99912 The RWST vitreous wirewound high power resistors are known for their excellent reliability which has developed out of the Vishay Sfernice experience over several decades in the field of high current applications. Extremely severe conditions of use are encountered in electrical traction including repeated overloads. To withstand such conditions the new RWST model is extremely rugged and is manufactured to a very carefully monitored process using the best materials. NF F 16101, 10/1988 and 16102, 04/1992: Not applicable (our parts are made of metallic and refractory materials). NF C 93-214. Performances according to NF C 93-214. DIMENSIONS in millimeters STAINLESS STEEL 304 L COLLARS CS TYPE 1 STAINLESS STEEL 304 L COLLARS CS TYPE 2 C A A D 23 D E E 3 B B 26 F 58 F G H 15 G H 15 J J WELDED STAINLESS STEEL 304 L COLLARS AN N WELDED STAINLESS STEEL 304 L BAND B U Q B R B C V K P C T S A Z L A Revision: 14-Oct-16 Document Number: 50017 1 For technical questions, contact: sferfixedresistors vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc 91000 RWST www.vishay.com Vishay Sfernice DIMENSIONS in millimeters G H L B C F J SERIES CONNECTIONS A 2 D E - 4 - 4 K + 0.5 MAX. MIN. 0.5 0.5 + 0 + 0 + 0 RWST AN-B CS type 1 138 28 12 50 1.5 27 1 24 199 169 6.5 28.5 1 9 25 x 138 RWST AN-B CS type 1 168 28 12 50 1.5 27 1 24 229 199 6.5 28.5 1 9 25 x 168 RWST AN-B CS type 1 250 33 17 60 1.5 30 1 25 317 287 9 31 1 13 30 x 250 RWST AN CS type 2 370 45 22 69 max. 45 1.5 30 432 405 9 45 1.5 18 40 x 370 RWST AN CS type 2 373 53 27.1 80 max. 51 1.5 30 432 405 9 51 1.5 18 50 x 373 Q R AVERAGE UNIT S SERIES CONNECTIONS N 2 P - 0 - 0.3 T 1 U V Z WEIGHT IN g MAX. + 5 + 0.9 (CS collars) RWST AN-B CS type 1 117 2 51.5 1.5 15 26 38.5 23.5 5.7 33.5 1 6 225 25 x 138 RWST AN-B CS type 1 147 2 50 1.5 15 26 38.5 23.5 5.7 33.5 1 6 250 25 x 168 RWST AN-B CS type 1 227 2 55 1.5 18 31 43.5 26 5.7 36 1 5 445 30 x 250 RWST AN CS type 2 332 3 81.5 max. - - - - 9.2 57 1.5 10 1400 40 x 370 RWST AN CS type 2 332 3 92.5 max. - - - - 9.2 63 1.5 11.5 2200 50 x 373 STANDARD ELECTRICAL SPECIFICATIONS RESISTANCE RATED POWER TOLERANCE MODEL SIZE RANGE P 25 C % W RWST 25 x 138 25138 2.7 to 82K 95 5 RWST 25 x 168 25168 2.7 to 100K 160 5 RWST 30 x 250 30250 4.7 to 220K 280 5 RWST 40 x 370 40370 8.2 to 360K 500 5 RWST 50 x 373 50373 12 to 390K 700 5 MECHANICAL SPECIFICATIONS TECHNICAL SPECIFICATIONS Mechanical Protection Vitreous enamel 2.7 to 430 k Resistance Range (E12, E24 preferred series values) Resistive Element Ni-Cr wire Connections CS supporting collars Resistance Tolerance 5 % Standard AN Collar or B on request Average Unit Weight 225 g to 2200 g Power Rating 95 W to 800 W at 25 C Temperature Coefficient 75 ppm/C (typical) ENVIRONMENTAL SPECIFICATIONS Shelf Life 0.1 % year (typical) Temperature Range -55 C +450 C Climatic Category -55 C / +200 C / 56 days PERFORMANCE TESTS CONDITIONS REQUIREMENTS TYPICAL VALUES AND DRIFTS 10 P during 5 s r Short Time Overload 2 % or 0.05 0.5 % Voltage limited at < 5000 V 2 % or 0.05 Climatic Sequence -55 C, +200 C 0.5 % Insulation resistance 100 M Humidity 56 days 3 % or 0.05 0.5 % (Steady State) 95 % relative humidity Insulation resistance 100 M Load at 100 % P followed by cold r Thermal Shock 2 % or 0.05 0.5 % temperature exposure at -55 C / 15 Severity 50 A Shock 1 % or 0.05 0.25 % 9 shocks/each side Vibration Severity 55B 1 % or 0.05 0.25 % Terminal Strength AN Traction 40 Ncm 1 % or 0.05 0.5 % B Torque 60 Ncm 1000 h 1 % 90 / 30 cycle Load Life 5 % 1000 h at P 25 C 5000 h 2 % r Revision: 14-Oct-16 Document Number: 50017 2 For technical questions, contact: sferfixedresistors vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc 91000