etaldoc 110/10 page 1 of 4 february 2006 product data sheet pick-off transformer P1727 features applications ? 12.6mm (0.5") seated height ? telecommunications ? lead-free (pb-free) ? pick-off applications ? rohs compliant ? calling line identification ? vacuum encapsulated ? instrumentation ? iec 60950 and ul 60950 certified ? voice recording ? ul recognized component description P1727 is a high impedance transformer for applications where high performance and safety isolation to international standards are required in a compact case size. P1727 has a turns ratio of 2.162:1 giving an impedance transformation of 4.67:1. P1727 is designed for ?listening? applications when placed across a line, presenting a very high impedance to minimize circuit loading. P1727 is certified to iec 60950 and ul 60950. P1727 is a ul recognized component and is supported by an iec cb test certificate. the part is completely lead-free, compliant with rohs directive 2002/95/ec, and suitable for lead-free and conventional processing.
1727 etaldoc 110/10 page 2 of 4 february 2006 specifications electrical at t = 25oc unless otherwise stated. parameter conditions min typ max units voltage isolation (1) 50hz dc 3.88 5.5 - - - - kvrms kv balance dc ? 5khz method tg25 50 - - db input impedance 200hz ? 4khz, fig 2 12 - - k operating range: functional storage humidity ambient temperature -25 -40 - - - - +85 +125 95 oc oc %r.h. lumped equivalent circuit parameters as fig. 1 dc resistance, r dc (2) sum of windings (corrected for ratio) - - 1537 leakage inductance l refered to pins 1-3 - - 160 mh shunt inductance lp 10mv 200hz 22 - - h shunt loss rp 10mv 200hz 50 - - k notes 1. components are 100% tested at 6.5kv dc. 2. caution: do not pass dc through windings. telephone line current, etc. must be diverted using choke or semiconductor line hold circuit.
1727 etaldoc 110/10 page 3 of 4 february 2006 construction dimensions shown are in millimetres (inches). geometric centres of outline and pin grid coincide within a tolerance circle of 0.6mm equivalent circuit line fi g 1 re c o m m e n d e d c i r c u i t fi g 2 t hrough "loss" (including voltage ratio) 6.7db plus less than 0.8db excluding effect of any dc blocking capacitor. response: 0.3db 200hz - 4khz e 2
1727 etaldoc 110/10 page 4 of 4 february 2006 safety certification constructed in accordance with iec 60950-1:2001, en 60950-1:2001 and ul 60950-1 first edition, supplementary insulation, 250vrms maximum working voltage, flammability class v-0. distances through solid insulation 0.4mm minimum. certified under the iec cb scheme (certificate dk-9431) to iec 60950-1:2001, sub-clauses 1.5, 1.5.1, 1.5.2, 1.7, 1.7.1, 2, 2.9, 2.9.1, 2.9.2, 2.9.3, 2.10, 2.10.1, 2.10.2, 2.10.3, 2.10.3.1, 2.10.3.3, 2.10.4, 2.10.5, 2.10.5.1, 2.10.5.4, 4, 4.7, 4.7.1, 4.7.3, 4.7.3.1, 4.7.3.4, 5, 5.2, 5.2.1, and 5.2.2 for a maximum working voltage of 250vrms, nominal mains supply voltage not exceeding 300vrms and a maximum operating temperature of 85oc in pollution degree 2 environments, supplementary insulation, including national differences for denmark, finland, germany, norway, sweden, switzerland, usa, canada and uk. recognized under the component recognition program of underwriters laboratories inc. to us and canadian requirements can/csa c22.2 no. 60950-1-03/ul60950-1, first edition, based on iec 60950-1, first edition, maximum working voltage 250vrms, pollution degree 2, reinforced insulation. ul file number e203175. additionally, profec technologies certifies all transformers as providing voltage isolation of 3.88kvrms, 5.5kv dc minimum. all shipments are supported by a certificate of conformity to current applicable safety standards. absolute maximum ratings copyright (ratings of components independent of circuit). short term isolation voltage (15s) dc current storage temperature lead temperature, 10s 4.6kvrms, 6.5kv dc 100 a -40oc to +125oc 260oc etal and P1727 are trade marks of profec technologies ltd. the trade mark etal is registered at the uk trade marks registry. profec technologies ltd. is the owner of the design right under the copyright designs and patents act 1988 and no rights or licences are hereby granted or implied to any third party. ? 1996 ? 2006 profec technologies ltd. reproduction prohibited. etal group oy, kuormatie 14, fin-03101, nummela telephone: +358 (0)20 7500 330 fax: +358 (0)20 7500 333 website: www.etalgroup.com email: etalgroup@egruppen.com fm 25326 iso 9001 e203175
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