Topstek Current Transducers TW25A .. TW300A TW 25A~300A Features Applications 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 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 Specifications Parameter Symbol Unit TW TW TW 25A 37.5A 50A 37.5 50 TW 75A TW TW TW TW TW TW TW 100A 125A 150A 175A 200A 250A 300A 75 100 Nominal Input Current Ifn A DC 25 Linear Range Ifs A DC ±75 ±112.5 ±150 ±225 ±300 ±375 ±450 ±525 ±600 ±750 ±750 Nominal Output Voltage Vhn V 4 V±1% @ If=Ifn ( RL=10k) Offset Voltage Vos mV Within ±35 mV @ If=0, Ta=25°C Output Resistance ROUT <100(50nominal) Hysteresis Error Voh mV Within ±30 mV @ If=Ifn0 Supply Voltage VCC/VEE V ±15V ±5% Linearity % Within ±1% of Ifn Consumption Current ICC mA ±22 mA nominal, ±30 mA max Response Time (90%Vhn) Tr Psec Frequency bandwidth (-3dB) fBW Hz DC to 50kHz Thermal Drift of Output - %/°C Within ±0.1 %/°C @ Ifn Thermal Drift of Zero Current Offset - mV/°C Dielectric Strength - V AC2.5KV X 60 sec Isolation Resistance @ 1000 VDC RIS M >1000 M Operating Temperature Ta °C -15°C to 80°C Storage Temperature Ts °C -20°C to 85°C Mass W g 150 g 5 Psec max. 125 @ 150 200 250 300 d If /dt = Ifn / Psec < ±3 mV/°C < ±1.5 mV/°C - 98 www.topstek.com 175 < ±1 mV/°C 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 3 5 Offset A Gain A Gain B Offset B - 99 www.topstek.com TW V080201 7/1/2008