LA25-NPSP7

Current Transducer LA 25-NP/SP7 For the electronic measurement of currents : DC, AC, pulsed, mixed, with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). IPN = 2.5 A Electrical data IPN IP RM Primary nominal r.m.s. current Primary current, measuring range Measuring resistance with ± 15 V ISN KN VC IC Vd Vb @ ± 2.5 A max @ ± 3.6 A max 2.5 0 .. ± 3.6 R M min R M max 100 100 320 190 A A Ω Ω mA V mA kV V V Features •Closed loop (compensated) multiturns current transducer using the Hall effect •Insulated plastic case recognized according to UL 94-V0. Secondary nominal r.m.s. current Conversion ratio Supply voltage (± 5 %) Current consumption R.m.s. voltage for AC isolation test, 50 Hz, 1 mn R.m.s. rated voltage 1), safe separation basic isolation 25 10 : 1000 ± 15 10 + IS 2.5 600 1700 Special features •IPN = 2.5 A •IP = 0 .. ± 3.6 A •K N = 10 : 1000. Accuracy - Dynamic performance data X Advantages ± 0.5 < 0.2 Typ ± 0.05 ± 0.05 ± 0.06 ± 0.10 Max ± 0.15 ± 0.15 ± 0.25 ± 0.35 % % mA mA mA mA µs kHz ε L Typical accuracy @ IPN , TA = 25°C Linearity Offset current 2) @ IP = 0, TA = 25°C Residual current 3) @ IP = 0, after an overload of 3 x IPN Thermal drift of IO 0°C .. + 25°C + 25°C .. + 70°C Response time 4) @ 90 % of IP max Frequency bandwidth (- 1 dB) IO IOM IOT tr f •Excellent accuracy •Very good linearity •Low temperature drift •Optimized response time •Wide frequency bandwidth •No insertion losses •High immunity to external interference 1500 22 EN 50178 °C °C mΩ Ω µH MΩ g 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. Pollution class 2 Measurement carried out after 15 mn functionning The result of the coercive field of the magnetic circuit With a di/dt of 100 A/µs A list of corresponding tests is available 990125/2 LEM Components w w w .lem.com Dimensions LA 25-NP/SP7 Bottom view (in mm. 1 mm = 0.0394 inch) Right view Top view + - swiss made Standard 00 or N° SP.. Year Week Secondary terminals Terminal + : supply voltage + 15 V Terminal M : measure Terminal - : supply voltage - 15 V Connection in out Back view Mechanical characteristics •General tolerance •Fastening & connection of primary ± 0.2 mm 2 pins 0.635 x 0.635 mm •Fastening & connection of secondary 3 pins ∅ 1 mm •Recommended PCB hole 1.2 mm Remark •IS is positive when IP flows from terminal + to terminal -. LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.