LF505-S

Current Transducer LF 505-S For the electronic measurement of currents : DC, AC, pulsed..., with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). IPN = 500 A 16137 Electrical data I PN IP RM Primary nominal rms current Primary current, measuring range Measuring resistance with ± 15 V with ± 18 V with ± 24 V ISN KN VC IC @ ± 500 A max @ ± 800 A max @ ± 500 A max @ ± 800 A max @ ± 500 A max @ ± 800 A max 500 0 .. ± 800 RM min RM max 0 0 0 0 5 5 60 11 92 30 149 65 A A Ω Ω Ω Ω Ω Ω Features • Closed loop (compensated) current • Insulated plastic case recognized according to UL 94-V0. transducer using the Hall effect Advantages • • • • • • • Excellent accuracy Very good linearity Low temperature drift Optimized response time Wide frequency bandwidth No insertion losses High immunity to external interference • Current overload capability. Secondary nominal rms current Conversion ratio Supply voltage (± 5 %) Current consumption 100 mA 1 : 5000 ± 15 .. 24 V 24 (@ ± 18 V) + IS mA Accuracy - Dynamic performance data XG ε L Overall accuracy @ IPN , T A = 25°C Linearity error Offset current @ IP = 0, T A = 25°C Thermal drift of IO - 40°C .. + 70°C Response time 1) @ 90 % of IPN di/dt accurately followed Frequency bandwidth (- 1 dB) ± 0.6 < 0.1 Typ Max ± 0.4 ± 0.4 % % mA mA µs A/µs kHz Applications • AC variable speed drives and servo motor drives Static converters for DC motor drives Battery supplied applications Uninterruptible Power Supplies (UPS) Switched Mode Power Supplies (SMPS) • Power supplies for welding applications. IO IOT tr di/dt f ± 0.1 100 DC .. 100 • • • • General data TA TS RS m Ambient operating temperature Ambient storage temperature Secondary coil resistance @ Mass Standards - 40 .. + 70 °C - 40 .. + 85 °C 70 Ω 230 g EN 50155 : 1995 EN 50178 : 1997 T A = 70°C Applications domain • Traction • Industrial. Note : 1) With a di/dt of 100 A/µs. page 1/3 060922/9 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com Current Transducer LF 505-S Isolation characteristics Vd Vw R.m.s. voltage for AC isolation test, 50 Hz, 1 mn Impulse withstand voltage 1.2/50 µs 3.8 12.5 Min 15.2 14.5 175 kV kV dCp dCl CTI Creepage distance Clearance distance Comparative Tracking Index (Group IIIa) mm mm Application examples According to EN 50178 and CEI 61010-1 standards and following conditions : • Over voltage category OV 3 • Pollution degree PD2 • Non-uniform field EN 50178 dCp, dCI, VW Single isolation Reinforced isolation Rated isolation voltage 1250 V 690 V CEI 61010-1 Nominal voltage 1250 V rms 690 V rms Safety This transducer must be used in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the following manufacturer's operating instructions. Caution, risk of electrical shock When operating the transducer, certain parts of the module can carry hazardous voltage (eg. primary busbar, power supply). Ignoring this warning can lead to injury and/or cause serious damage. This transducer is a built-in device, whose conducting parts must be inaccessible after installation. A protective housing or additional shield could be used. Main supply must be able to be disconnected. page 2/3 060922/9 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com Dimensions LF 505-S (in mm. 1 mm = 0.0394 inch) Bottom view Right view Back view Top view Connection Mechanical characteristics • General tolerance • Transducer fastening Vertical or flat lying position Recommended fastening torque or vertical position ± 0.5 mm 4 or 6 holes ∅ 4.3 mm 4 or 6 steel screws M4 3.2 Nm or 2.37 Lb.-Ft. 4 holes ∅ 1.9 mm, depth : 7.5 mm 4 screws PTKA 25, length: 6 mm 0.7 Nm or 0.52 Lb.-Ft. 4 holes ∅ 1.9 mm, crossing 4 screws PTKA 25, length:10 mm 0.75 Nm or 0.55 Lb.-Ft. ∅ 30.2 mm MOLEX 5045-03/A Remarks • IS is positive when IP flows in the direction of the arrow. • Temperature of the primary conductor should not exceed • Dynamic performances (di/dt and response time) are best • This is a standard model. For different versions (supply voltages, turns ratios, unidirectional measurements...), please contact us. with a single bar completely filling the primary hole. 100°C. Recommended fastening torque or flat lying position • Primary through-hole • Connection of secondary 060922/9 Recommended fastening torque page 3/3 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com