Isolation coordinates for installations for galvanic isolation according to EN50178 and EN61140.

Operating instructions/system description

Repair and maintenance The devices of the WE-/K-system are installation devices respectively electronic equipment for the use in secluded electrical operating sites were only skilled personnel or electrically instructed personnel must have admission or access to.The devices are assessed for pollution degree 2 according to EN50178 The transfer characteristics of the devices remain stable, even over long periods of time, thus eliminating the need for regular adjustment. Maintenance is therefore not required. Fault elimination No changes can be made to devices which are operated in hazardous areas. Repairs on the device are also not allowed. Ambient conditions Ambient temperature: see data sheetStorage temperature: -40 °C ... +90 °C (233 K ... 363 K)Humidity: max. 75 % rel. humidity without moisture condensation. Isolation coordinates for devices with Ex-certificate according to EN50020 The devices are assessed for pollution degree 2 according to EN50178.
Date of issue03/03/06 – Catalogue K-system Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

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