lem components www.lem.com current transducer ha 10 to 25-np for the electronic measurement of dc, ac and pulsed currents, with a galvanic isolation between the primary (high power) circuit and the secondary (electronic) circuit. electrical data primary nominal primary current rms current i pn (a) measuring range i p (a) primary terminal connections series parallel series parallel ha 10-np 5 10 0 .. 10 0 .. 20 ha 25-np 12.5 25 0 .. 25 0 .. 50 ? p overload capacity (1 ms) 50 x i pn a v out analogue output voltage @ i pn 4 v r l load resistance > 4 k w v c supply voltage ( 5 %) 15 v i c current consumption (max) < 20 ma v b rms rated voltage 1) 500 v v d rms voltage for ac isolation test, 50 hz, 1 mn primary to secondary 2.5 kv primary 1 to primary 2 2) 1kv r is isolation resistance @ 500 v dc > 500 m w accuracy - dynamic performance data x accuracy 3) @ i pn , t a = 25c, @ 15 v 1 % e e e e e l linearity 3) 1 % max v oe electrical offset voltage @ i p = 0, t a = 25c 30 mv v om residual offset voltage @ i p = 0 after an overload of 3 x i pn 20 mv v ot thermal drift of offset voltage t a = - 10 .. + 80c 3 mv/k tc e e e e e g thermal drift of gain t a = - 10 .. + 80c 0.07 %/k t r response time @ 90 % of i p < 3 s di/dt di/dt accurately followed > 50 a/s f frequency bandwidth (- 3 db) 4) dc .. 50 khz general data t a ambient operating temperature - 10 .. + 80 c t s ambient storage temperature - 25 .. + 85 c m mass 10 g standards 5) en50178 (1994) features open loop transducer using hall effect printed circuit board mounting insulated plastic case to ul 94-v0 externally programmable for desired rating galvanic isolation between primary windings. advantages very good linearity very good accuracy low temperature drift wide frequency bandwidth very low insertion losses high immunity to external interference current overload capability low power consumption wide dynamic range, 5 to 50 a in one package easy to mount with automated handling systems. applications ac variable speed drives and servo motor drives static converters for dc motor drives battery supplied applications uninterruptable power supplies (ups) switched mode power supplies (smps) power supplies for welding applications. i pn = 5 .. 25 a hanp980903/1 notes : 1) overvoltage category iii, pollution degree 2 2) primary 1 is between a and b, primary 2 is between c and d 3) excludes the electrical offset 4) refer to derating curves in the technical file to avoid excessive core heating at high frequency 5) please consult characterisation report for more technical details and application advice.
lem have a policy of continual product improvement and the company reserves the right to revise the above specification without pri or notice. primary connections series a: i p in d: i p out connect b to c parallel a + c : i p in b + d : i p out isolated primary a : primary 1 i p in b : primary 1 i p out c : primary 2 i p in d : primary 2 i p out secondary terminals terminal 1 : supply voltage - 15 v terminal 2 : 0v terminal 3 : supply voltage + 15 v terminal 4 : output mechanical characteristics general tolerance 0.5 mm fastening & connection of primary ha 10-np 4 pins ? 0.71 mm ha 25-np 4 pins ? 1.4 mm recommended pcb hole ha 10-np 4 pins ? 1 mm ha 25-np 4 pins ? 1.8 mm fastening & connection of secondary 4 pins ? 0.51 x 0.25 mm recommended pcb hole ? 1 mm dimensions ha 10 to 25-np (in mm. 1 mm = 0.0394 inch) bottom view front view left view remarks v out is positive when i p flows in the direction of the arrow. this is a standard model. for different versions (supply voltages, secondary connections, unidirectional measure- ments, operating temperatures, etc.) please contact us.
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