Safety Information; Compliance With Standards; Technical Data; Installation - Scame electrical solutions ISOLATORS-EX Serie Instrucciones Para La Instalación, Uso Y Mantenimiento

ISOLATORS-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 switch - disconnectors in enclosures of the ISOLATORS-EX Series can be used for fixed installations in
environments with a potential risk of explosion, due to the presence of combustible dust, classified as zone 21 and
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 ISOLATORS-EX Series switch - disconnectors in enclosures for their approved use only, and
keep them completely intact and clean. The switch - disconnectors in enclosures are designed to withstand shocks
of 7 J and to be used under normal vibration conditions. They are not designed for use in environments subject to
extreme vibrations. The enclosure is made of thermoplastic material. 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 switch - disconnector in enclosure 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 when ever
working on the device.

2. Compliance with standards

The switch – disconnectors in enclosure of series XGE and XEM are intended for use in Zone 21 and 22, in
compliance with the provisions of Directive 2014/34/EU:
EN 60079-0:2009 (Electrical apparatus for explosive gas athmospheres)
Part 0: general requirements
EN 60079-31:2009 (Electrical apparatus for explosive gas athmospheres)
Part 31: equipment dust ignition protection by enclosure "t".
3. Technical data and codes
3.1 Ex Marking
II 2D - Ex tb IIIC T80°C Db IP66 (Ta -25 to +40°C)
II 2D - Ex tb IIIC T90°C Db IP66 (Ta -25 to +60°C)
Year 20xx: Year of manufacture.
Product suited for use in an explosive atmosphere.
II: Product classified as belonging to group II, suitable for environments other than mines (surface industries).
2D: Product in category 2D intended to be installed in environments with the presence of combustible dust
classified as zone 21.
Ex tb: protection mode (protection by means of enclosure).
IIIC: Equipment classified as group IIIC, product suited to be used in presence of conductive dust.
T80°C, T90°C: Value of the maximum surface temperature based on the room temperature:
• ROOM TEMPERATURE -25°C +40°C
• ROOM TEMPERATURE -25°C +60°C
Db : Equipment Protection Level (EPL).
S/N XXXXXXXXXX : Serial number shown inside the SWITCH - DISCONNECTOR in enclosure.
3.2 Type Test Certificate
TÜV IT 14 ATEX 005
3.3 Degree of protection of the switch - disconnector in enclosure, IP66.
3.4 Power terminals: connectable wires and tightening torques.
(See table 2)

4. Installation

Installation must be carried out by suitably trained personnel in compliance with applicable laws. The plant-
engineering standards for environments classified against the risk of explosion due to the presence of combustible
dust must be followed (e.g.: EN 60079-14, or other national standards/regulations). Comply with the rules of
generally accepted engineering practice for the installation of electrical material, national safety rules and the
safety instructions contained in this manual whenever working on the unit. Before opening the cover of the switch
- disconnector in enclosure, always disconnect the power supply voltage or check that the atmosphere is not
hazardous. 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 switch - disconnector in enclosure must be maintained by using suitable cable
glands and gaskets and by complete compliance with the installation and maintenance instructions/standards. The
equipment must not be altered in any manner; in particular no holes may be drilled other than the existing ones. The
cable glands used must be suitable for the cable entries (see point 4.6). Store the product in the warehouse inside
its original packaging to protect it from dust and humidity. The switch - disconnector in enclosure must be installed
intact and free of any damage, so that the dust does not penetrate inside it.
Instructions for correct installation of the switch - disconnector in enclosure:
1) Read the Instructions for installation, use and maintenance regarding the switch - disconnector in enclosure.
2) Using the fastening dimensions shown in Figure 1, mark the positions of the fastening holes on the installation wall.
3) Drill the fastening holes on the installation wall and thread the holes (if required).
4) Remove the device from the package and check that it has not been damaged during transport.
5) Check that the cover and base are clean and free of defects.
6) Make sure that the gasket between cover and base is intact.
7) Place the base in the assembly position on the installation wall, using any assistance necessary in order to prevent accidents.
8) Fasten the apparatus by repeating the following operations for each fastening hole:
a) insert the clamping screw into the fastening hole;
b) tighten the bolt or tighten the clamping screw completely.
9) Check that the fastening is secure.
10) Proceed with the assembly of the cable glands (if not preassembled) following the manufacturer' s instructions.
11) Insert the cables in the apparatus, being careful to secure the amour of the cables (if applicable).
12) Proceed with the wiring according to the wiring diagram issued to the installer. Before closing the switch -
disconnector in enclosure.
13) Check that all foreign materials have been removed from inside: do not leave these instructions inside.
14) Check that the gaskets are intact and installed properly.
15) Close the cover by tightening the screws appropriately in order to guarantee the IP degree of protection. The
tightening torque of the screws is 2.5 Nm.
16) Store these instructions in a safe location for future reference.
MP36511
4.2 Wiring of the terminals
The wiring must be carried out up to standard. Use only properly sized equipment to perform the wiring.Each
terminal can host a single conductor, unless several conductors have been joined previously in a suitable manner.
The electrical cables must have insulation suited for the voltage. Unused terminals must be tightened completely.
4.3 Earthing Protection
Il The switch - disconnector in enclosure must be connected to protection/earthing circuits in compliance with
the system's installation rules.
The internal earth terminal will have to be connected to an equipotential protection or earthing circuit before
powering the apparatus.
4.4 Cable glands
Use only ATEX cable glands which are suitable for the substances, temperatures and installation zone (marked
II 2D Ex tb IIIC with minimum degree of protection IP66). Make certain that the cable glands selected are suitable
for the cables, so as to prevent loosening guarantee a permanent seal against humidity and dust. The unused
cable entries, if open, must be closed with ATEX certified plugs which are suitable for the substances, temperatures
and installation zone (marked II 2D Ex tb IIIC with minimum degree of protection IP66).
• For the installation of cable glands subject to separate ATEX certification, follow the respective instructions
in table 4.
• The maximum number of cable glands (or plugs) that can be installed is indicated in Table 3.
• Provide a power supply cable suited for the maximum entry temperature; see table 3.
Tab. 3: Cable glands.
4.5 Threaded holes for cable entry
The holes drilled in the base of the ISOLATORS-EX resist tightening torques up to the following maximum values:
Versions
590.XGE/XEM200X - 20A
590.XGE/XEM320X - 32A
590.XGE/XEM400X - 40A
Tab. 4: Cable glands.
Do not exceed the tightening torque indicated in table 4.
Do not drill the walls.
Threaded hole
M20
M25
M32
5.Use, maintenance and repair
The inspection and maintenance of this switch - disconnector in enclosure must be carried out by suitably trained
personnel up to standard and according to plant-engineering and maintenance standards for environments
classified against the risk of explosion due to the presence of combustible dust (e.g.: EN 60079-14 or other
national standards/regulations).
During routine maintenance, always check the components responsible for the degree of protection. All repairs
of this apparatus must be carried out by suitably trained personnel in compliance with the standards.
5.1 Padlock to be used
For correct lockability of the rotary switch, use only padlocks with an arch diameter of 4.7mm.
5.2 Routine maintenance
Routine maintenance is necessary in order to guarantee proper operation and preservation of the degree of
protection of the switch - disconnector in enclosure.
1) Check that the gasket is intact each time the enclosure is opened.
2) Check that the closing screws are all in position and well-tightened each time the enclosure is closed.
3) Check that the screws/bolts fastening the enclosure to the wall are well-tightened and free of corrosion each year.
4) Check the seal of the cable glands each year.
5) Check for any damage to the enclosure each year.
6) Check that the screw terminals are tightened as indicated in table 2.
7) In environments with the presence of combustible dust, the outer surface of the enclosure must be cleaned
periodically, preventing the deposited dust from reaching a thickness of more than 5 mm.
5.3 Chemical aggression
The ISOLATORS-EX device has been manufactured using:
• Thermoplastic alloy (PC Xiloxane) for the enclosure base and cover; switch facing and rotary switch.
• Thermoplastic rubber for the base-cover gasket and knob gasket.
• Screws in AISI316 stainless steel.
The environment in which the device will be installed must be considered carefully in order to verify the
compatibility of these materials with the presence of chemical agents or corrosive atmospheres.
5.4 Disposal
The product must be disposed of in compliance with national rules on the disposal and recycling of industrial
waste.
4
Number of cable Maximum Temperature
entries of cable entry
2xM25 + 1xM20
2xM32 + 1xM20 95° C
2xM32 + 1xM20 95° C
Maximum Tightening Torque (Nm)
10
12
14
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