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page 1/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com for the electronic measurement of current: dc, ac, pulsed..., with galvanic separation between the primary and the secondary circuit. features hall effect measuring principle multirange current transducer through pcb pattern lay-out galvanic separation between primary and secondary circuit insulated test voltage 4300 v low power consumption extremely low profle 12 mm single power supply + 5 v fixed offset & sensitivity over-current detect 2.63 x i pn (peak value) memory check. advantages small size and space saving only one design for wide primary current range high immunity to external interference 8 mm creepage /clearance high insulationcapability fast response. applications ac variable speed drives static converters for dc motor drives battery supplied applications uninterruptible power supplies (ups) switched mode power supplies (smps) power supplies for welding applications the solar inverter on dc side of the inverter (mppt) combiner box. standards en 50178: 1997 iec 61010-1: 2010 iec 61326-1: 2012 ul 508: 2010. application domain industrial. current transducer ho-np-0000 series i pn = 8, 15, 25 a ref: ho 8-np-0000, ho 15-np-0000, ho 25-np-0000 n64.50.11.000.0, n64.50.15.000.0, n64.50.19.000.0
page 2/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com absolute maximum ratings parameter symbol unit value supply voltage (not operating) u c v 6.5 primary conductor temperature t b c 120 esd rating, human body model (hbm) u esd kv 2 stresses above these ratings may cause permanent damage. exposure to absolute maximum ratings for extended periods may degrade reliability. ul 508: ratings and assumptions of certifcation file # e189713 volume: 2 section: 5 standards csa c22.2 no. 14-10 industrial control equipment - edition 11 - revision date 2011/08/01 ul 508 standard for industrial control equipment - edition 17 - revision date 2010/04/15 ratings parameter symbol unit value primary involved potential v ac/dc 600 max surrounding air temperature t a c 105 primary current p a according to series primary currents secondary supply voltage u c v dc 5 output voltage v out v 0 to 5 conditions of acceptability when installed in the end-use equipment, consideration shall be given to the following: 1 - these devices have been evaluated for overvoltage category iii and for use in pollution degree 2 environment. 2 - a suitable enclosure shall be provided in the end-use application. 3 - the terminals have not been evaluated for feld wiring. 4 - these devices have been evaluated for use in 105c maximum surrounding air temperature. 5 - the secondary (sensing) circuit is intended to be supplied by a isolated secondary circuit - limited voltage circuit defned by ul 508 paragraph 32.5. the maximum open circuit voltage potential available to the circuit and overcurrent protection shall be evaluated in the end use application. 6 - these devices are intended to be mounted on a printed wiring board of end-use equipment. the suitability of the connections (including spacings) shall be determined in the end-use application. 7 - primary terminals shall not be straightened since assembly of housing case depends upon bending of the terminals. 8 - any surface of polymeric housing have not been evaluated as insulating barrier. 9 - low voltage circuits are intended to be powered by a circuit derived from an isolating source (such as a transformer , optical isolator, limiting impedance or electro-mechanical relay) and having no direct connection back to the primary circuit (other than through the grounding means). marking only those products bearing the ul or ur mark should be considered to be listed or recognized and covered under ul's follow-up service. always look for the mark on the product. ho-np-0000 series
page 3/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com insulation coordination parameter symbol unit value comment rms voltage for ac isolation test 50/60hz/1 min u d kv 4.3 impulse withstand voltage 1.2/50 s ? w kv 8 partial discharge extinction rms voltage @ 10 pc u e v 1650 clearance (pri. - sec.) d ci mm 8 shortest distance through air creepage distance (pri. - sec.) d cp mm 8 shortest path along device body case material v0 according to ul 94 comparative tracking index cti v 600 application example - - 600 v cat iii pd2 reinforced insulation, non uniform feld according to en 50178 application example - - 300 v cat iii pd2 reinforced insulation, non uniform feld according to iec 61010 application example - - 1000 v cat iii pd2 simple insulation, non uniform feld according to en 50178, iec 61010 environmental and mechanical characteristics parameter symbol unit min typ max comment ambient operating temperature t a c -40 105 ambient storage temperature t s c -40 105 surrounding temperature according to ul 508 c 105 mass m g 5 ho-np-0000 series
page 4/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com electrical data i pn = 8 a at t a = 25c, c = + 5 v, p = 1 turn, l = 10 k? unless otherwise noted (see min, max, typ. defnition paragraph in page 12). parameter symbol unit min typ max comment primary nominal rms current i pn a 8 primary current, measuring range i pm a -20 20 number of primary turns p 1,2,3 supply voltage c v 4.5 5 5.5 current consumption i c ma 19 25 reference voltage ref v 2.475 2.5 2.525 internal reference external reference voltage ref v 0.5 2.65 output voltage range @ i pm v out - ref v -2 2 output voltage @ i p = 0 a v out v v ref + oe electrical offset voltage oe mv -7 7 temperature coeffcient of ref ref ppm/k 160 -20c .. 85 c internal reference 190 -40c .. 105 c internal reference temperature coeffcient of oe tv oe mv/k 0.088 -20c .. 85 c 0.095 -40c .. 105 c theoretical sensitivity th mv/a 100 800 mv/ i pn @ c = 5 v sensitivity error % of i pn 0.5 factory adjustment temperature coeffcient of ppm/k 200 -40c .. 85 c 220 -40c .. 105 c linearity error 0 .. i pn l % of i pn 0.5 @ c = 5 v linearity error 0 .. i pm l % of i pm 0.8 @ c = 5 v gain error with respect to c 10 % %/% 0.05 gain error per c drift magnetic offset voltage @ i p = 0 after 2.5 x i pn v om mv 4 reaction time @ 10 % of i pn t ra s 2 d i /dt = i pn /s response time @ 90 % of i pn t r s 3.5 d i /dt = i pn /s frequency bandwidth (- 3 db) khz 250 output rms voltage noise (spectral density) (dc .. 100 khz) no v/hz 32.9 @ c = 5 v output voltage noise (dc .. 20 mhz) no mvpp 80 standby pin 0 level v 0.3 standby pin 1 level v u c -0.3 time to switch from standby to normal mode s 20 over-current detect v 2.6 x i pn 2.9 x i pn 3.2 x i pn peak value accuracy @ i pn % of i pn 1 = g + l accuracy @ i pn @ a = + 85 c % of i pn 2.9 see formula note 1) accuracy @ i pn @ a = + 105 c % of i pn 3.8 see formula note 1) note: 1) accuracy @ i p and ta = [ + (/10000) ( a - 25) + oe 100 ( a -25) / ( th i p )]. ho-np-0000 series
page 5/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com electrical data i pn = 15 a at t a = 25c, c = + 5 v, p = 1 turn, l = 10 k? unless otherwise noted (see min, max, typ. defnition paragraph in page 12). parameter symbol unit min typ max comment primary nominal rms current i pn a 15 primary current, measuring range i pm a -37.5 37.5 number of primary turns p 1,2,3 supply voltage c v 4.5 5 5.5 current consumption i c ma 19 25 reference voltage ref v 2.475 2.5 2.525 internal reference external reference voltage ref v 0.5 2.65 output voltage range @ i pm v out - ref v -2 2 output voltage @ i p = 0 a v out v v ref + oe electrical offset voltage oe mv -5 5 temperature coeffcient of ref ref ppm/k 160 -20c .. 85 c internal reference 190 -40c .. 105 c internal reference temperature coeffcient of oe tv oe mv/k 0.075 theoretical sensitivity th mv/a 53.33 800 mv/ i pn , @ c = 5 v sensitivity error % of i pn 0.5 factory adjustment temperature coeffcient of ppm/k 200 linearity error 0 .. i pn l % of i pn 0.5 @ c = 5 v linearity error 0 .. i pm l % of i pm 0.8 @ c = 5 v gain error with respect to c 10 % %/% 0.05 gain error per c drift magnetic offset voltage @ i p = 0 after 2.5 x i pn v om mv 5 reaction time @ 10 % of i pn t ra s 2 d i /dt = i pn /s response time @ 90 % of i pn t r s 3.5 d i /dt = i pn /s frequency bandwidth (- 3 db) khz 250 output rms voltage noise (spectral density) (dc .. 100 mhz) no v/hz 17.5 output voltage noise (dc .. 20 mhz) no mvpp 50 standby pin 0 level v 0.3 standby pin 1 level v u c -0.3 time to switch from standby to normal mode s 20 over-current detect v 2.6 x i pn 2.9 x i pn 3.2 x i pn peak value accuracy @ i pn % of i pn 1 = g + l accuracy @ i pn @ a = + 85 c % of i pn 2.8 see formula note 1) accuracy @ i pn @ a = + 105 c % of i pn 3.4 see formula note 1) note: 1) accuracy @ i p and ta = [ + (/10000) ( a - 25) + oe 100 ( a -25) / ( th i p )]. ho-np-0000 series
page 6/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com electrical data i pn = 25 a at t a = 25c, c = + 5 v, p = 1 turn, l = 10 k? unless otherwise noted (see min, max, typ. defnition paragraph in page 12). parameter symbol unit min typ max comment primary nominal rms current i pn a 25 primary current, measuring range i pm a -62.5 62.5 number of primary turns p 1,2,3 supply voltage c v 4.5 5 5.5 current consumption i c ma 19 25 reference voltage ref v 2.475 2.5 2.525 internal reference external reference voltage ref v 0.5 2.65 output voltage range @ i pm v out - ref v -2 2 output voltage @ i p = 0 a v out v v ref + oe electrical offset voltage oe mv -5 5 temperature coeffcient of ref ref ppm/k 160 -20c .. 85 c internal reference 190 -40c .. 105 c internal reference temperature coeffcient of oe tv oe mv/k 0.075 theoretical sensitivity th mv/a 32 800 mv/ i pn @ c = 5 v sensitivity error % of i pn 0.5 factory adjustment temperature coeffcient of ppm/k 200 linearity error 0 .. i pn l % of i pn 0.5 @ c = 5 v linearity error 0 .. i pm l % of i pm 0.8 @ c = 5 v gain error with respect to c 10 % %/% 0.05 gain error per c drift magnetic offset voltage @ i p = 0 after 2.5 x i pn v om mv 6 reaction time @ 10 % of i pn t ra s 2 d i /dt = i pn /s response time @ 90 % of i pn t r s 3.5 d i /dt = i pn /s frequency bandwidth (- 3 db) khz 250 output rms voltage noise (spectral density) (dc .. 100 mhz) no v/hz 10.5 output voltage noise (dc .. 20 mhz) no mvpp 30 standby pin 0 level v 0.3 standby pin 1 level v u c -0.3 time to switch from standby to normal mode s 20 over-current detect v 2.6 x i pn 2.9 x i pn 3.2 x i pn peak value accuracy @ i pn % of i pn 1 = g + l accuracy @ i pn @ a = + 85 c % of i pn 2.8 see formula note 1) accuracy @ i pn @ a = + 105 c % of i pn 3.4 see formula note 1) note: 1) accuracy @ i p and ta = [ + (/10000) ( a - 25) + oe 100 ( a -25) / ( th i p )]. ho-np-0000 series
page 7/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com typical performance characteristics i pn = 8 a figure 1: linearity error figure 2: frequency response -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 -10 -8 -6 -4 -2 0 2 4 6 8 10 linearity error (%) primary current (a) linearity error ho 8 - np -180 -120 -60 0 60 120 180 -6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 10 100 1000 10000 100000 1000000 phase [deg] gain [0 db at 50 hz] frequency [hz] frequency characteristics gain [0 db at 50 hz] spec phase 20 mv/div vout ip 2 s/div vout ip 1 s/div ho-np-0000 series
page 8/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com typical performance characteristics i pn = 15 a figure 6: linearity error figure 7: frequency response 20 mv/div -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 -20 -15 -10 -5 0 5 10 15 20 linearity error (%) primary current (a) linearity error ho 15 - np -180 -120 -60 0 60 120 180 -6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 10 100 1000 10000 100000 1000000 phase [deg] gain [0 db at 50 hz] frequency [hz] frequency characteristics gain [0 db at 50 hz] spec phase vout ip 2 s/div vout ip 1 s/div vout ip ho-np-0000 series
page 9/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com typical performance characteristics i pn = 25 a figure 11: linearity error figure 12: frequency response -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 -30 -20 -10 0 10 20 30 linearity error (%) primary current (a) linearity error ho 25 - np -180 -120 -60 0 60 120 180 -6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 10 100 1000 10000 100000 1000000 phase [deg] gain [0 db at 50 hz] frequency [hz] frequency characteristics gain [0 db at 50 hz] spec phase 20 mv/div vout ip 1 s/div vout ip 2 s/div ho-np-0000 series
page 10/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com maximum continuous dc primary primary current figure 16: i p vs t a for ho series important notice: whatever the usage and/or application, the transducer jumper temperature shall not go above the maximum rating of 120 c as stated in page 2 of this datasheet. 0 10 20 30 40 50 0 25 50 75 100 125 i p (a) t a ( ) 15a 15a 15a 15a 15a 15a 15a 8a 0 25 50 75 100 0 25 50 75 100 125 i p (a) t a ( ) 15a 15a 15a 15a 15a 15a 15a 15a 0 25 50 75 100 125 0 25 50 75 100 125 i p (a) t a ( ) 25a ho-np-0000 series
page 11/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com measuring range with external reference voltage upper limit: i p = - 10 v ref + 45 (v ref = 0.5 .. 2.65 v) lower limit: p = - 10 v ref + 5 (v ref = 0.5 .. 2.65 v) upper limit: i p = - 18.75 v ref + 84.38 (v ref = 0.5 .. 2.65 v) lower limit: p = - 18.75 v ref + 9.38 (v ref = 0.5 .. 2.65 v) upper limit: t a = 105 c i p = 80 (v ref = 0.5 ..1.94 v) i p =31.25 v ref + 140.63 (v ref = 1.94 .. 2.65 v) t a = 85 c i p = 90 (v ref = 0.5 ..1.62 v) i p =31.25 v ref + 140.63 (v ref = 1.62 .. 2.65 v) t a = 60 c i p = 100 (v ref = 0.5 ..1.3 v) i p =31.25 v ref + 140.63 (v ref = 1.3 .. 2.65 v) t a = 25 c i p = 110 (v ref = 0.5 ..0.98 v) i p =31.25 v ref + 140.63 (v ref = 0.98 .. 2.65 v) lower limit: p = - 31.25 v ref + 15.63 (v ref = 0.5 .. 2.5 v) example with v ref = 0.5 v: the 8 a version has a measuring range from 0 a to 40 a the 15 a version has a measuring range from 0 a to 75 a the 25 a version has a measuring range from 0 a to 80 a at t a = 105 c example with v ref = 1.5 v: the 8 a version has a measuring range from - 10 a to 30 a the 15 a version has a measuring range from - 18.7 a to + 56.3 a the 25 a version has a measuring range from - 31.2 a to + 90 a at t a = 85 c -30 -20 -10 0 10 20 30 40 50 0.5 1 1.5 2 2.5 i p (a) v ref (v) ho 8 -60 -40 -20 0 20 40 60 80 100 0.5 1 1.5 2 2.5 i p (a) v ref (v) ho 15 -90 -60 -30 0 30 60 90 120 0.5 1 1.5 2 2.5 i p (a) v ref (v) ho 25 25 60 85 105 ho-np-0000 series
page 12/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com application information total primary resistance the primary resistance is 0.36 m? per conductor at 25 c. in the following table, examples of primary resistance according to the number of primary turns. defnition of typical, minimum and maximum values minimum and maximum values for specifed limiting and safety conditions have to be understood as such as well as values shown in typical graphs. on the other hand, measured values are part of a statistical distribution that can be specifed by an interval with upper and lower limits and a probability for measured values to lie within this interval. unless otherwise stated (e.g. 100 % tested), the lem defnition for such intervals designated with min and max is that the probability for values of samples to lie in this interval is 99.73 %. for a normal (gaussian) distribution, this corresponds to an interval between -3 sigma and +3 sigma. if typical values are not obviously mean or average values, those values are defned to delimit intervals with a probability of 68.27 %, corresponding to an interval between -sigma and +sigma for a normal distribution. typical, maximal and minimal values are determined during the initial characterization of a product. remark installation of the transducer must be done unless otherwise specifed on the datasheet, according to lem transducer generic mounting rules. please refer to lem document nane120504 available on our w eb site: products/product documentation. number of primary turns primary resistance current rms r p [ m? ] recommended connections primary nominal current pn [ a ] 1 0.12 13 12 11 out 8 15 25 in 8 9 10 2 0.54 13 12 11 out 4 7.5 12.5 in 8 9 10 3 1.18 13 12 11 out 2.67 5 8.33 in 8 9 10 ho-np-0000 series
page 13/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com ho name and codifcation ho name and codification as example the 1)2)3)4) indicate the transducer programming. 1) reference out: 2.5 v ? code: 0 1.65 v ? code: 1 1.5 v ? code: 2 0.5 v ? code: 3 only vref in ? code: 4 (low power mode engaged) 2) response time: 3.5 ? s ? code: 0 2 ? s ? code: 1 6 ? s ? code: 2 3) control eeprom: yes ? code: 0 no ? code: 1 4) overcurrent detection: 2.9 ? code: 0 3.6 ? code: 1 4.0 ? code: 2 4.8 ? code: 3 5.2 ? code: 4 5.8 ? code: 5 1.7 ? code: 6 2.3 ? code: 7 0.67 ? code: a 0.94 ? code: b 1.17 ? code: c 1.4 ? code: d 1.6 ? code: e 1.9 ? code: f 2.1 ? code: g 2.3 ? code: h ho 15-np/spxxx- 1)2)3)4) ho 15-np- 1)2)3)4) ho 15-np/sp33- 1)2)3)4) ? + 3.3 v power supply ho 15-np- 1)2)3)4) ? + 5 v power supply set_thresh = 0 set_thresh = 1 ho-np-0000 series
page 14/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com pcb footprint assembly on pcb ? recommended pcb hole diameter 1.5 mm for primary pin 0.9 mm for secondary pin ? maximum pcb thickness 2.4 mm ? wave soldering profle maximum 260c, 10 s no clean process only safety this transducer must be used in limited-energy secondary circuits according to iec 61010-1. this transducer must be used in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the manufacturers operating instructions. caution, risk of electrical shock. when operating the transducer, certain parts of the module can carry hazardous voltage (e.g. primary bus bar, power supply). ignoring this warning can lead to injury and/or cause serious damage. this transducer is a build-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. ho-np-0000 series
page 15/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com figure 17: current cycle used to measure magnetic and electrical offset (transducer supplied) electrical offset the electrical offset voltage v oe can either be measured when the ferro-magnetic parts of the transducer are: completely demagnetized, which is diffcult to realize, or in a known magnetization state, like in the current cycle shown in fgure 17. using the current cycle shown in fgure 18, the electrical offset is: note: the transducer has to be demagnetized prior to the application of the current cycle (for example with a demagnetization tunnel). overall accuracy the overall accuracy at 25 c x g is the error in the - pn .. + pn range, relative to the rated value pn . it includes: the electrical offset v oe / p g (%) the sensitivity error g (%) the linearity error l (to pn ) (%) response and reaction times the response time t r and the reaction time t ra are shown in fgure 18 both depend on the primary current d i/dt . they are measured at nominal ampere-turns. figure 18: response time t r and reaction time t ra ampere-turns and amperes the transducer is sensitive to the primary current linkage p (also called ampere-turns). p = n p p (at) where n p is the number of primary turn (depending on the connection of the primary jumpers) caution: as most applications will use the transducer with only one single primary turn ( n p = 1), much of this datasheet is written in terms of primary current instead of current linkages. however, the ampere-turns (at) unit is used to emphasis that current linkages are intended and applicable. transducer simplifed model the static model of the transducer at temperature t a is: v out = g p + overall error (mv) in which error = g p g + l p g + tcg (t a -25) p g + v oe + tcv oe (t a -25) (mv) with: p = n p p : primary current linkage (at) p max : max primary current linkage applied to the transducer (at) v out : output voltage (v) t a : ambient operating temperature (c) v oe : electrical offset current (v) tcv oe : temperature coeffcient of v oe (mv/k) g : sensitivity of the transducer (v/at) tcg : temperature coeffcient of g (%/k) g : sensitivity error (%) l ( p max ) : linearity error for p max (%) this model is valid for primary ampere-turns p between - p max and + p max only. sensitivity and linearity to measure sensitivity and linearity, the primary current (dc) is cycled from 0 to p , then to - p and back to 0 (equally spaced p /10 steps). the sensitivity g is defned as the slope of the linear regression line for a cycle between pn . the linearity error l is the maximum positive or negative difference between the measured points and the linear regression line, expressed in % of pn . magnetic offset the magnetic offset voltage v om is the consequence of a current on the primary side (memory effect of the transducers ferro- magnetic parts). it is measured using the following primary current cycle. v om depends on the current value p1 ( p1 > pm ). performance parameters defnition t v t v v out out o m 2 ) ( ) ( 2 1 ? = p ( dc) - i p 1 p 1 0 a t 1 t t i p ( 3 ) t 2 i p ( 3 ) i i t ra v t r 90 % 10 % t 100 % i i out p 2 ) ( ) ( 2 1 t v t v v out out oe + = ) 25 ( ) ( ) ( c ... t ... t ... oe oe ot ? = ho-np-0000 series
page 16/16 18february2014/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com dimensions ho 8-np-0000, ho 15-np-0000, ho 25-np-0000 (mm, general linear tolerance 0.5 mm) required c onnect i on 11 9 12 13 8 10 1 2 3 4 5 6 7 47n f 47n f + u c 4. 7n f v out v ref ( i n/ o ut ) o c d st a ndby 0v n/a (co nnec ted to g r o und) > 10k i n o ut 5? 200? ho-np-0000 series

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