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ULW3 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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ULW3 Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
3 / 4 page Welwyn Components © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0)1670 822181 · Facsimile: +44 (0)1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com 03. 09 UL Recognised Wirewound Resistors ULW Series Pulse Performance Fusing Performance 1.2/50µsPeakVoltage Limit (10 pulses at 10s intervals, R<5%) Note the voltage show n is the nett voltage across the resistor. The generator open circuit voltage w ill be higher due to the generator's internal impedance. 0 1 2 3 4 5 0 10 20 30 40 50 60 70 80 90 100 Value (ohms) Pulse Energy Limit (single or low repetition rate, R<5%) 0 1 2 3 4 5 6 7 8 0 10 20 30 40 50 60 70 80 90 100 Value (ohms) ULW2 ULW2 ULW3 ULW3 ULW4-10RJ has an energy limit of 4.3J and a 1.2/50 s peak voltage limit of 1.1kV. ULW2 Fusing Characteristic 0 10 20 30 40 50 60 30 35 40 45 50 55 60 Initial Power (W) Notes: 1. Typical fusing times are around 1/3 of the maximum figures. 2. After fusing the resistance value is >100 times the initial nominal value. 3. Suitable for fusing at voltages up to 264Vrms. ULW3 & ULW4 Fusing Characteristic 0 10 20 30 40 50 60 50 60 70 80 90 100 110 120 Initial Power (W) |
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