Document of Conformity

IECEx Certificate

of Conformity

Certificate No.: IECEx ULD 15.0008U

Date of issue: 2019-12-18

Page 3 of 4

Issue No: 3

Ex Component(s) covered by this certificate is described below:

SCHEDULE OF LIMITATIONS:

Feed through and protective terminal blocks type ZDU and ZPE are for the connection of copper conductors in enclosures. The type of

protection is increased safety, “eb”, insulating parts made of Wellamid with optional accessories, type ZQV plug-in cross-connectors, type

WEW, ZEW, EW end brackets and type ZAP for fixing on mounting rails.

Please see Annex for additional information.

•

The feed through and protective conductor terminal blocks are suitable for use in enclosures in atmospheres with flammable gases or

combustible dust. For flammable gases these enclosures must satisfy the requirements according to IEC 60079-0 and IEC 60079-7.

For combustible dust these enclosures must satisfy the requirements according to IEC 60079-0 and IEC 60079-31.

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 “e” for gas atmosphere. For dust

atmosphere the terminal blocks shall be mounted inside a suitable certified enclosure (IEC 60079-31) in type of protection “t”.

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 110 °C under any condition.

T6 (- 60 °C ≤ Tamb ≤ +40 °C)

T5 (- 60 °C ≤ Tamb ≤ +55 °C)

T4 (- 60 °C ≤ Tamb ≤ +70 °C)

When using the types ZDU and ZPE with other terminal blocks series or sizes or accessories the requirements for clearance and

creepage distances according to table 2 of IEC 60079-7 must be observed. Regarding the use of covers, cross-connectors and end

brackets the instructions of the manufacturer must be followed.

For cross connection accessories current rating, resistance across the terminal please refer to the table under “types & electrical rating”

above. Details on creepage and clearance values and the required torque values please see Notice to installers.

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.