Closed Loop Current Sensors CLS-25 - Sypris T&M - FW Bell - #1

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Model CLS-25 Closed Loop Hall Effect Description The CLS-25 is a reduced size current transducer based on the principle of magnetic compensation. It provides electronic measurement of DC, AC or pulsed currents, and their combinations, with galvanic isolation between the primary (high current) and secondary circuits. It has four intégral primary pins. This closed loop current sensor provides excellent performance at affordable prices. F.W. BELL CLS-25 Features • Noncontact measurement of high current • Measures DC, AC and impulse currents • Current sensing up to 400A peak • Very fast response and high accuracy • High overload capacity • PC board mount Applications • Variable speed drives for motors • Welding Equipment • Power supply Equipment • Measure and control System • Over current protection • Protection of power semiconductors 9830 VIT! 111 Electrical Spécifications CLS-25 Nominal Current (IN)................................................................................ 25 A.t RMS Measuring Rangea.................................................................................. 0 to ± 50 A.t (± 90 A.tF1 Measuring Résistance.............................................................................. R min. B max- with ±15V at ±25 A.t Max....................................... 54 ohm 360 ohm at ±50 A.t Max....................................... 54 ohm 150 ohm at ±90 A.t Max....................................... 54 ohm 54 ohm Nominal Analog Output Current................................................................ 25 mA Turns Ratio.............................................................................................. 1-2-3-4/1000 Accuracy at +25°Cra»i............................................................................ 0.5% of I n Max. dl/dt Accurately followed......................................................................... > than 50A/u.S Supply Voltage....................................................................................... ±12 to ±15 Vdc (+5%) Galvanic Isolation.................................................................................... 5 kV RMS/50 Hz/1 minute Zéro Offset Current at + 25°C...............................................................better than ±0.15mA Thermal Drift of offset Current 0°C to 70°C............................................... better than ±0.6mA Linearity................................................................................................. better than ±0.2% Response Time ©50%............................................................................. better than 200 nS Response Time @10%............................................................................. better than 50 nS Bandwidth............................................................................................... DC to 200 kHz (-ldB) General Information Operating/Storage Température...............................................................-40°C to + 85°C/40°C to + 90°C Current Consumption...............................................................................12 mA plus output current Secondary Internai Résistance (at + 70°C)............................................... 66 ohm Primary Internai Résistance..................................................................... <1.25 milliohm per turn Weight...................................................................................................17 g maximum Package.................................................................................................Insulated plastic case (UL94-VO) Mounting................................................................................................Designed to mount directly on PCB via hole connection pins. Output Référence....................................................................................To obtain a positive output on the terminal marked "0", current must flow from terminais 1,2,3,4 to terminais 8,7,6, and 5 (conventional flow). Notes: [1] = The CLS-25 offers a choice of 4 measuring ranges (refer to the connection schematic on the following page) [2] = For 2 seconds only [3] = Excludes the effect of zéro offset [4] = Over the operating range Due to continuous process improvement, ail spécifications are subject to change without notice. V paciFic sciennFic Pacific Scientific-OECO 4607 SE International Way Milwaukie, OR 97222 (503) 659-5999 www.oeco.com Rev. date 07/2008