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 OB OB 26 D E 3 58 F F G H G H 15 15 J J WELDED STAINLESS STEEL 304 L COLLARS "AN" N WELDED STAINLESS STEEL 304 L BAND "B" OU Q OB OB R OC K V P T OC S A Z L A www.vishay.com 61 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 RWST STYLE 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373 Connections AN-B CS type 1 AN-B CS type 1 AN-B CS type 1 AN CS type 2 AN CS type 2 138 28 12 50 1.5 27 1 24 199 169 6.5 28.5 1 9 117 2 51 1.5 15 26 38.5 23.5 5.7 33.5 1 6 168 28 12 50 1.5 27 1 24 229 199 6.5 28.5 1 9 147 2 51 1.5 15 26 38.5 23.5 5.7 33.5 1 6 250 33 17 60 1.5 30 1 25 317 287 9 31 1 13 227 2 55 1.5 18 31 43.5 26 5.7 36 1 5 370 45 22 69 max. 45 1.5 30 432 405 9 45 1.5 18 332 3 81.5 max. 9.2 57 1.5 10 373 53 27.1 80 max. 51 1.5 30 432 405 9 51 1.5 18 332 3 92.5 max. 9.2 63 1.5 11.5 225 250 445 1400 2200 A2 O B max. O C min. D E F 0.5 G - 4/+ 0 H - 4/+ 0 J 0.5 K L - 0/+ 0.5 N P Q - 0/+ 0.5 R - 0.3/+ 0.9 S max. T1 OU V Z Average unit weight in g (CS collars) MECHANICAL SPECIFICATIONS Mechanical Protection Resistive Element Connections AN Collar or B Average Unit Weight Vitreous enamel Ni-Cr wire CS supporting collars on Request 225 g to 2200 g ENVIRONMENTAL SPECIFICATIONS Temperature Limits Climatic Category - 55 C + 450 C - 55 C/+ 200 C/56 days ELECTRICAL SPECIFICATIONS Resistance Range 2.7 to 430 k E12-E24 preferred series values) Resistance Tolerance Standard 5% Power Rating 95 W to 800 W at 25 C Temperature Coefficient 75 ppm/C (typical) Shelf Life 0.1 % year (typical) PERFORMANCE CONDITIONS REQUIREMENTS TYPICAL VALUES AND DRIFTS 10 Pr during 5 s Voltage limited at < 5000 V 2 % or 0.05 0.5 % - 55 C + 200 C 2 % or 0.05 Insulation resistance 100 M 0.5 % Humidity (Steady State) 56 days 95 % relative humidity 3 % or 0.05 Insulation resistance 100 M 0.5 % Thermal Shock Load at 100 % Pr followed by cold temperature exposure at - 55 C/15' 2 % or 0.05 0.5 % Severity 50 A 9 shocks/each side 1 % or 0.05 0.25 % TESTS Short Time Overload Climatic Sequence Shock Vibration Terminal Strength AN B Load Life Document Number: 50017 Revision: 12-May-09 Severity 55B 1 % or 0.05 0.25 % Traction 40 Ncm Torque 60 Ncm 1 % or 0.05 0.5 % 90'/30' cycle 1000 h at Pr 25 C 5% For technical questions, contact: sfer@vishay.com 1000 h 1% 5000 h 2% www.vishay.com 62 RWST Vishay Sfernice Fixed Wirewound High Power Vitreous Resistors Electrical Traction Model SPECIAL FEATURES RWST STYLE 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373 - RB 25 x 168 RB 30 x 250 - - Power Rating at 25 C 95 W 160 W 280 W 500 W 700 W Maximum Power Rating at 25 C 110 W 180 W 320 W 600 W 800 W Designation NF C 93-214 P max. Ohmic Range (E12, E24 series) 2.7 82 k 2.7 100 k 4.7 8.2 220 k 360 k 12 430 k Limiting Element Voltage 1400 V 1900 V 3000 V 4500 V 5000 V Critical Resistance 18 k 20 k 30 k 36 k 30 k 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 POWER RATING CHART % RATED POWER 100 75 50 25 0 0 65 130 195 260 325 390 455 AMBIENT TEMPERATURE IN C RW ST 50 x 37 3 70 0 x3 25 40 ST RW ST 3 0x x1 RW T2 ST RW RW S HOT SPOT TEMPERATURE IN C 400 25 5x 13 8 68 TEMPERATURE RISE 300 200 100 0 10 100 1000 RATED POWER IN W www.vishay.com 63 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 PACKAGING MARKING Box: Fixed quantity depending on size and connections. SFERNICE trademark, model, style, nominal resistance (in ), tolerance (in %), manufacturing date. 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 B 0 4 SIZE LEADS OPTION OHMIC VALUE TOLERANCE PACKAGING SPECIAL 25138 25168 30250 40370 50373 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 Document Number: 50017 Revision: 12-May-09 For technical questions, contact: sfer@vishay.com www.vishay.com 64 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