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| Topstek Current Transducers TW25A .. TW300A Features TW 25A~300A Applications iUPS systems iIndustrial robots iNC tooling machines iElevator controllers iProcess control devices iAC and DC servo systems iMotor speed controller iElectrical vehicle controllers iInverter-controlled welding machines iGeneral and special purpose inverters iPower supply for laser processing machines iController for traction equipment e.g. electric trains iOther automatic control systems iHighly reliable Hall Effect device iCompact and light weight. Two sensors in one package iFast response time iExcellent linearity of the output voltage over a wide input range iExcellent frequency response (> 50 kHz) iLow power consumption (22 mA nominal) iCapable of measuring both DC and AC, both pulsed and mixed iHigh isolation voltage between the measuring circuit and the current-carrying conductor (AC2.5KV) iExtended operating temperature range iFlame-Retardant plastic case and silicone encapsulate, using UL classified materials, ensures protection against environmental contaminants and vibration over a wide temperature and humidity range Specifications Parameter Nominal Input Current Linear Range Nominal Output Voltage Offset Voltage Output Resistance Hysteresis Error Supply Voltage Linearity Consumption Current Response Time (90%Vhn) Frequency bandwidth (-3dB) Thermal Drift of Output Thermal Drift of Zero Current Offset Dielectric Strength Isolation Resistance @ 1000 VDC Operating Temperature Storage Temperature Mass ICC Tr fBW RIS Ta Ts W Symbol Unit Ifn Ifs Vhn Vos ROUT Voh VCC/VEE mV V % mA Psec Hz %/C mV/C V M C C g < 3 mV/C < 1.5 mV/C AC2.5KV X 60 sec >1000 M -15C to 80C -20C to 85C 150 g A DC A DC V mV TW TW TW 25A 37.5A 50A 25 37.5 50 TW 75A 75 TW TW TW TW TW TW TW 100A 125A 150A 175A 200A 250A 300A 100 125 150 175 200 250 300 75 112.5 150 225 300 375 450 525 600 750 750 4 V1% @ If=Ifn ( RL=10k ) Within 35 mV @ If=0, Ta=25C <100 (50 nominal) Within 30 mV @ If=Ifn 0 15V 5% Within 1% of Ifn 22 mA nominal, 30 mA max 5 Psec max. @ d If /dt = Ifn / Psec DC to 50kHz Within 0.1 %/C @ Ifn < 1 mV/C - 98 www.topstek.com TW V080201 7/1/2008 Topstek Current Transducers TW25A .. TW300A Appearance, dimensions and pin identification All dimensions in mm 0.1, holes -0, +0.2 except otherwise noted. Positive current flow direction Pin Assignment 0V B output A output -15V +15V Gain B Offset B Offset A Gain A - 99 www.topstek.com TW V080201 7/1/2008 |
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