LA25-SP14

Current Transducer LA 25-NP/SP14 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 = 0.25 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 @ ± 0.25 A max @ ± 0.36 A max 0.25 0 .. ± 0.36 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 25 100 : 1000 ± 15 10 + IS 2.5 600 1700 Special features •IPN •IP •K N •TA = = = = 0.25 A 0 .. ± 0.36 A 100 : 1000 - 10°C .. + 70°C. Accuracy - Dynamic performance data X Advantages ± 0.5 < 0.2 % % mA mA mA µs kHz ε L Typical accuracy @ IPN , TA = 25°C Linearity IO IOM IOT tr f Typ Max Offset current 2) @ IP = 0, TA = 25°C ± 0.05 ± 0.15 Residual current 3) @ IP = 0, after an overload of 3 x IPN ± 0.05 ± 0.15 Thermal drift of IO - 10°C .. + 70°C ± 0.10 ± 0.35 Response time 4) @ 90 % of IP max Frequency bandwidth (- 1 dB) 1500 22 EN 50178 °C °C mΩ Ω µH MΩ g 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 Notes : 1) 2) 3) 4) 5) 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 applications. 990126/2 LEM Components w w w .lem.com Dimensions LA 25-NP/SP14 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.