current transducer htfs 200..800-p/sp2 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). all data are given with a r l = 10 k w electrical data primary nominal primary current type r.m.s. current measuring range i pn (a) i p (a) 200 300 htfs 200-p/sp2 400 600 htfs 400-p/sp2 800 1200 htfs 800-p/sp2 v out analog output voltage @ i p v ref ( 1.25 i p / i pn ) v i p = 0 v ref 0.025 v v ref internal reference 1) - output voltage 1/2 v c 0.025 v v ref output impedance typ. 200 w v ref load impedance 3 200 k w r l output load resistance 3 2 k w r out output impedance < 10 w c l max. output capacitive load < 1 f v c supply voltage ( 5 %) 5 v i c current consumption @ v c = 5 v 22 ma accuracy - dynamic performance data x accuracy 2) @ i pn , t a = 25c 1 % of i pn e l linearity 0 .. 1.5 x i pn 0.5 % of i pn tcv out thermal drift of v out @ i p = 0 0.3 mv/k tcv ref thermal drift of v ref 0.01 %/k tcv out / v ref thermal drift of v out / v ref @ i p = 0 0.2 mv/k tc e g thermal drift of the gain 0.05 % of reading/k v om residual voltage @ i p = 0, after an overload of 3 x i pn dc <0.5 % of i pn t ra reaction time @ 10 % of i pn < 3 s t r response time @ 90 % of i pn < 7 s di/dt di/dt accurately followed > 100 a/s output noise (dc ..10 khz) < 15 mvpp (dc .. 1 mhz) < 40 mvpp f frequency bandwidth (-3 db) 3) dc .. 20 khz general data t a ambient operating temperature - 40 .. + 105 c t s ambient storage temperature - 40 .. + 105 c dcp creepage distance > 4 mm dcl clearance distance > 4 mm cti comparative tracking index (group iiia) 220 v ul94 classification v0 m mass 60 g standards en 50178 (97-10-01) features hall effect measuring principle galvanic isolation between primary and secondary circuit low power consumption single power supply +5v ratiometric offset t a = -40..+105 c pcb fixation by 4 ?1 pins advantages small size and space saving only one design for wide current ratings range high immunity to external interference. v ref. in/out applications forklift drives 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. i pn = 200 - 400 - 800 a 041222/2 lem components www .lem.com
lem components www .lem.com notes : 1) it is possible to overdrive v ref with an external reference voltage between 2 - 2.8 v providing its ability to sink or source approx. 2.5 ma. 2) excluding offset. 3) small signal only to avoid excessive heatings of the magnetic core. current transducer htfs 200..800-p/sp2 insulation category v b nominal voltage 150 v r.m.s. with iec 61010-1 standards and following conditions - single insulation - over voltage category iii - pollution degree 2 - heterogeneous field v b nominal voltage 150 v r.m.s. with en 50178 standards and following conditions - reinforced insulation - over voltage category iii - pollution degree 2 - heterogeneous field v d r.m.s. voltage for ac isolation test, 50/60 hz, 1 mn 2.5 kv v e r.m.s. voltage for partial discharge extinction @ 10pc > 1 kv v w impulse withstand voltage 1.2/50 s 4 kv if insulated cable is used for the primary circuit, the voltage category could be improved with the following table : cable insulation (primary) category har 03 300v cat iii har 05 400v cat iii har 07 500v cat iii this transducer shall be used in accordance with manufacturer instruction. power supply shall be a low voltage sourc e and shall have an efficient protective system against over current. power supply must incorporate a circuit breaker. this transducer shall be used in an electric/electronic equipment in respect of standards rules and applicable safety requirements. p rimary bar and output terminals can provide hazardous voltage. this transducer is a built in device, of which conducting parts must be inaccessible by installation. protective envelope or additional shield must be used. safety : caution, risk of danger caution, risk of electrical shock
lem reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. htfs 200..800-p/sp2 dimensions (in mm) mechanical characteristics general tolerance 0.2 mm fixation 4 pins x ? 1.0 recommended pcb hole ? 1.2 mm fastening & connection of secondary 4 pins 0.5 x 0.25 recommended pcb hole ? 0.7 mm remarks v out is positive when i p flows in the direction of the arrow. temperature of the primary conductor should not exceed 120c. ip 0v vref.(in/out) vout +vc required connection circuit operation principle 1 4 16 3-p=2.54 terminal pin +5v 0v output 47nf 47nf output 0v +5v 1...+5v 2...0v 3...output 7 26 4.5 ip 4...vref(in/out) 4-0.25x0.5 1 2 3 4 16.5 ref-in htfs 20.3 5 0.5 3.5+/-1 d22 40 vref(in/out) 4.7nf 3 r3 33 33 4-d=1.0
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