RWST Vishay Sfernice Fixed Wirewound High Power Vitreous Resistors Electrical Traction Model 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 * Compliant to RoHS directive 2002/95/EC "CS" Type 1 Collars 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 OC A A 23 D E D E 3 OB OB 26 58 F F G H G H 15 15 J J WELDED STAINLESS STEEL 304 L COLLARS "AN" WELDED STAINLESS STEEL 304 L BAND "B" N Q OB R OC OU OB T K V S P OC Z A L A www.vishay.com 112 For technical questions, contact: sfer@vishay.com Document Number: 50017 Revision: 12-May-09 RWST Fixed Wirewound High Power Vitreous Resistors Electrical Traction Model Vishay Sfernice DIMENSIONS in millimeters SERIES RWST 25 x 138 RWST 25 x 168 RWST 30 x 250 RWST 40 x 370 RWST 50 x 373 SERIES RWST 25 x 138 RWST 25 x 168 RWST 30 x 250 RWST 40 x 370 RWST 50 x 373 CONNECTIONS A2 O B MAX. OC MIN. D E F 0.5 G - 4/+ 0 H - 4/+ 0 J 0.5 K L + 0.5 +0 AN-B CS type 1 138 28 12 50 1.5 27 1 24 199 169 6.5 28.5 1 9 AN-B CS type 1 168 28 12 50 1.5 27 1 24 229 199 6.5 28.5 1 9 AN-B CS type 1 250 33 17 60 1.5 30 1 25 317 287 9 31 1 13 AN CS type 2 370 45 22 69 max. 45 1.5 30 432 405 9 45 1.5 18 AN CS type 2 373 53 27.1 80 max. 51 1.5 30 432 405 9 51 1.5 18 CONNECTIONS N2 P S MAX. T1 OU V Z AVERAGE UNIT WEIGHT IN g (CS collars) Q R - 0/+ 5 - 0.3/+ 0.9 AN-B CS type 1 117 2 51.5 1.5 15 26 38.5 23.5 5.7 33.5 1 6 225 AN-B CS type 1 147 2 50 1.5 15 26 38.5 23.5 5.7 33.5 1 6 250 AN-B CS type 1 227 2 55 1.5 18 31 43.5 26 5.7 36 1 5 445 AN CS type 2 332 3 81.5 max. - - - - 9.2 57 1.5 10 1400 AN CS type 2 332 3 92.5 max. - - - - 9.2 63 1.5 11.5 2200 MECHANICAL SPECIFICATIONS Mechanical Protection Resistive Element Connections AN Collar or B Average Unit Weight ELECTRICAL SPECIFICATIONS Vitreous enamel Ni-Cr wire CS supporting collars on request 225 g to 2200 g Resistance Range ENVIRONMENTAL SPECIFICATIONS Temperature Limits Climatic Category - 55 C + 450 C - 55 C/+ 200 C/56 days 2.7 to 430 k (E12, E24 preferred series values) Resistance Tolerance Standard Power Rating Temperature Coefficient Shelf Life 5% 95 W to 800 W at 25 C 75 ppm/C (typical) 0.1 % year (typical) REQUIREMENTS TYPICAL VALUES AND DRIFTS 2 % or 0.05 0.5 % PERFORMANCE TESTS CONDITIONS 10 Pr during 5 s Voltage limited at < 5000 V Short Time Overload Climatic Sequence - 55 C + 200 C Humidity (Steady State) Thermal Shock Shock Vibration Terminal Strength AN B Load Life 56 days 95 % relative humidity Load at 100 % Pr followed by cold temperature exposure at - 55 C/15' Severity 50 A 9 shocks/each side Severity 55B Traction 40 Ncm Torque 60 Ncm 2 % or 0.05 Insulation resistance 100 M 3 % or 0.05 Insulation resistance 100 M 0.5 % 2 % or 0.05 0.5 % 1 % or 0.05 0.25 % 1 % or 0.05 0.25 % 0.5 % 1 % or 0.05 90'/30' cycle 1000 h at Pr 25 C 0.5 % 1000 h 5000 h 5% 1% 2% SPECIAL FEATURES RWST STYLE Designation NF C 93-214 Power Rating at 25 C Maximum Power Rating at 25 C Ohmic Range (E12, E24 series) Limiting Element Voltage Critical Resistance Document Number: 50017 Revision: 12-May-09 25 x 138 95 W 25 x 168 RB 25 x 168 160 W 30 x 250 RB 30 x 250 280 W 40 x 370 500 W 50 x 373 700 W 110 W 180 W 320 W 600 W 800 W 2.7 82 k 1400 V 18 k 2.7 100 k 1900 V 20 k 4.7 220 k 8.2 360 k 3000 V 4500 V 30 k 36 k For technical questions, contact: sfer@vishay.com 12 430 k 5000 V 30 k www.vishay.com 113 RWST Fixed Wirewound High Power Vitreous Resistors Electrical Traction Model Vishay Sfernice NON INDUCTIVE WINDING For high frequencies, low self induction resistors are available with special windings. RWSTNI designation. MODEL AND STYLE OHMIC RANGE (E12 SERIES) RWSTNI 25 x 138 RWSTNI 25 x 168 RWSTNI 30 x 250 RWSTNI 40 x 370 RWSTNI 50 x 373 22 2.5 k 22 4 k 120 6.8 k 120 8.2 k 150 8.2 k RATED POWER IN % 100 75 50 25 0 0 65 130 195 260 325 390 RW ST 25 x1 RW 38 ST 25 x1 RW 68 ST 30 x2 RW 50 ST 40 RW x3 ST 70 50 x3 73 TEMPERATURE RISE HOT SPOT TEMPERATURE IN C POWER RATING 400 300 200 100 0 10 455 100 1000 RATED POWER IN W AMBIENT TEMPERATURE IN C MARKING PACKAGING Vishay Sfernice trademark, model, style, nominal resistance (in ), tolerance (in %), manufacturing date. Box: Fixed quantity depending on size and connections ORDERING INFORMATION RWST 25 x 138 MODEL STYLE NON-INDUCTIVE WINDING SPECIAL DESIGN Optional Optional B 56U 5% CONNECTIONS OHMIC VALUE B06 e TOLERANCE PACKAGING LEAD (Pb)-FREE Custom items are subject to extra-charge and min. order. Please see price list. GLOBAL PART NUMBER INFORMATION R W GLOBAL MODEL RWST S T 2 5 1 6 8 C 4 7 0 0 J 0 4 SIZE LEADS OPTION OHMIC VALUE TOLERANCE PACKAGING SPECIAL 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373 A = AN B=B C = CS F = Faston N = Non inductive winding The first three digits are significant figures and the last digit specifies the number of zeros to follow. R designates decimal point. J = 5.0 % K = 10 % Box: BO1 BO2 BO2NA BO4 BO4NA BO6 BO6NA As applicable. Example: BA7 4700 = 470 48R8 = 48.7 R010 = 0.01 R470 = 0.47 www.vishay.com 114 B For technical questions, contact: sfer@vishay.com Document Number: 50017 Revision: 12-May-09 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1