Document of Conformity

IECEx Certificate

of Conformity

Certificate No: IECEx CNEX 16.0005U Issue No: 1

Date of Issue: 2017-11-23

When combined with other terminal block series and accessories, the applicable creepage and

clearance distances shall be observed.    

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The insulation material has a limiting temperature of +100 °C.

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The temperature rise in the terminals does not exceed 40 K at 110 % of the rated current.

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The enclosure shall be constructed to block all sun and UV light from affecting the terminal blocks. The terminal blocks shall be placed

inside a suitable certified IP54 enclosure in type of protection 'eb' for gas atmosphere. For dust atmosphere the terminal blocks shall

be mounted inside a suitable certified IP6X enclosure (IEC/EN 60079-31) in type of protection 'db'.

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Under normal operating conditions the temperature rise of the terminal blocks is maximum 40 K, measured at the maximum permitted

rated current. Due to the above mentioned, the terminal blocks may be used in apparatus of temperature classes T6..T1 as long as the

terminal block ambient temperature range is not exceeded. No part of terminal block must exceed 100 °C under any condition.

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No other wire sizes or types than the ones specified in instructions must be used. The terminal blocks must either be mounted next to

another block of the same type and size or with an end plate.

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If smaller conductor cross sections than the rated conductor cross sections are used, then the corresponding lower current shall be

stated in the certificate of the complete apparatus.

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The resistance across the terminals, at rated conductor cross-section, are given as follows :

Model: WPD 104 WPD 105 WPD 106 WPD 107 WPD 108 WPD 109

contact

resistance

[mOhm]

< 0,32 < 0,26 < 0,2 < 0,14 < 0,13 < 0,1

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