User Documentation

Weidmüller Interface GmbH Co. KG; Klingenbergstraße 16, 32758 Detmold-Germany

Note:

If smaller cross sections than the rated cross section are used, the belonging lower current has to

be laid down in the IECEx/EC-Type Examination Certificate of the complete apparatus.

Mounting instructions:

The Feed-through terminals and PE terminals of the ZDK-series are suitable for application in

enclosures in atmospheres with flammable gases or combustible dust. For use in flammable gases

these enclosures must satisfy the requirements according to IEC/EN60079-0 and IEC/EN60079-7.

For use in combustible dust these enclosures must satisfy the requirements according to

IEC/EN60079-0 and IEC/EN60079-31.

Regarding the use of accessories the instructions of the manufacturer must be followed.

Essential Health and Safety Requirements:

Concerning ESRs this Schedule verifies compliance with the Annex III of ATEX directive only. By

placing the product on the market, the manufacturer declares compliance with other relevant

Directives, and all other safety related requirements including those of Annex II of this Directive.

Schedule of Limitations:

The Feed-through terminals and PE terminals of the ZDK-series 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 EN 60079-0 and EN 60079-7. For combustible dust the

enclosure must satisfy the requirements according to EN 60079-0 and EN 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 (EN60079-31) 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.

When using the types ZDK 2.5/3AN and ZDK 2.5/3AN PE especially with other terminal blocks

series or sizes or accessories the requirements for clearance and creepage distances according to

table 1 of EN 60079-7 must be observed. Regarding the use of covers, cross-connectors and end

brackets the instructions of the manufacturer must be followed.

T6 (- 60°C ... +40 °C)

T5 (- 60°C … +55 °C)

T4 (- 60°C ... +70 °C)

For cross connection accessories current rating, resistance across the terminal please refer to the

table under “Technical data” above.

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.

Manually cut cross connections and cross connections with blank ends

(ZQV´s ≥ 20 poles) shall not be used.

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.

Version: ZDK 2.5 /3AN-PE; 10247783 Index: 01 Date: 01.2018