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24V OPTIMA-EX Series
ENGLISH
THIS DOCUMENT MUST BE READ CAREFULLY BEFORE INSTALLATION
These instructions are intended for: expert electricians or appropriately trained personnel.
1. Safety information
The plugs of the OPTIMA-EX series are used for fixed installations in environments with a potential
risk of explosion identified as Zone 22.
These instructions for installation, use and maintenance must be kept in a safe location for future
reference. During operation or maintenance work on the apparatus, do not leave this manual or
other objects inside the enclosure.
Use the OPTIMA-EX series plugs for their approved use only, and keep them completely intact and
clean.
The plugs have been designed to withstand shocks of 4 J and to be used under normal vibration
conditions. They have not been designed for use in environments subject to extreme vibrations.
The type of protection cannot be guaranteed if the product is installed incorrectly.
Use only original spare parts supplied by SCAME.
No modification/work is permitted on the plugs unless specifically indicated in this manual.
DO NOT OPEN THE ENERGISED ENCLOSURE IN PRESENCE OF AN EXPLOSIVE
ATMOSPHERE
Always follow the national safety rules and the safety instructions contained in this manual
whenever working on the plug.
2. Compliance with standards
The plugs of the OPTIMA-EX series are intended for use in:
Zone 22. (EN 60079-0:2012+A11:2013, EN 60079-31:2014).
3. Technical data and codes
3.1 Type of Ex-protection
: II 3D Ex tc IIIC T90°C Dc IP66
Ta -25/+60°C
Year XXXX: Year of manufacture.
Product suited for use in an explosive atmosphere.
II: Product classified as belonging to group II, installable in environments not in mines.
3D: Product classified as belonging to category 3 for areas containing dust (D). The product can
be installed in Zone 22.
Ex tc: Product classified as type tc according to standard EN 60079-31 and intended for areas with
a potentially explosive atmosphere due to the presence of combustible dust.
IIIC: Equipment classified as group IIIC, product suited to be used in presence of conductive dust.
T90°C: Maximum surface temperature.
Dc: EPL for combustible dust.
Ta -25/+60°C: Allowed room temperature range, present at the installation site.
3.2 Special conditions of use (see instruction sheet)
Low mechanical risk 4J.
3.3 Degree of protection of the plug IP66
3.4 Power supply terminal: connecting cables and tightening torques
Terminal section: see table 1.
4. Installation
Installation must be carried out by suitably trained personnel in compliance with applicable
laws.
Comply with the rules of generally accepted engineering practice for the installation of electrical
material in places with presence of combustible dust (EN 60079-14), national safety rules and the
safety instructions contained in this manual whenever working on the unit. These operations must
be carried out by suitably trained and expert personnel.
4.1 Instructions for safe use
The IP degree of protection of the plug must be kept in compliance with the requirements of the
environment in which it will be installed by using suitable cable glands and gaskets and by complete
compliance with the installation standards.
Store the plug in the warehouse inside its original packaging to protect it from dust and humidity:
the plug must be removed from the package just before installation.
The plug must be installed intact and free of any damage.
Instructions for correct installation of the plug:
1) Read the Instructions for installation, use and maintenance regarding the interlocked socket.
2) Remove the plug from the package and check that it has not been damaged during transport.
3) Check that the components are clean and free of defects.
4) Pull out the insert from handle.
5) Insert the cable into the handle.
6) Wiring operations.
Before closing the plug:
MP36450
3
ZP90801-2
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