Scame ZENITH-P Serie Manual De Instrucciones página 8

ZENITH-P Series [Control stations]
2.3 Certificates
Atex Certificate
SIRA 11 ATEX 3008
2.4 Enclosure's degree of protection
Degree of protection IP66 or IP65 for the enclosure 644.0595.
2.5 Maximum Ambient temperature range Ta
The equipment is certified for a maximum ambient temperature
range -60°C / +75°C (-60°C / +60°C for enclosures item
644.0380, 644.0390, 644.0485 and 644.0595) with appropriate
terminals and accessories.
The ambient temperature range will be limited by the
component (terminal, actuator, switch, breath/drain
valve etc.) with the worst characteristics.
The ambient temperature is marked on the label and the control
station should not be used outside this range.
3 Installation
Installation shall be carried out by suitably-
trained personnel in accordance with the appli-
cable code of practice (e.g. IEC EN 60079-14) and the
provisions of the national safety and accident preven-
tion regulations and this instruction manual. 3.1 Safety
instructions
The IP rating of the enclosure shall be maintained for the area of
installation by the use of correct arrangement of cable-gland and
blanking plug elements & sealing and in accordance with the in-
stallation rules. Where other certified components are part of the
assembly, the user must take account of any limitation listed on
relevant certificates.
Where other certified components are part of the
assembly, the user must take account of any lim-
itation listed on relevant certificates.
These instructions assume that the required cable entries have
been pre-drilled (and may be threaded) on the enclosure. The
cable glands are usually fitted during installation.
The enclosure must be installed in absence of damage and free
of defects.
3.2 Accessories
The installation of the accessories must be performed before the
installation of the enclosure, and following the relevant instruction
sheets.
Accessories available:
- Backplates made of zinc plated steel
- Mounting bracket made of stainless steel AISI 316
MP37136
IECEx Certificate
IECEx SIR 11.0059
- External hinges made of thermoplastics material
- Earth continuity plate (internal) made of zinc plated steel - Avail-
able also in brass or copper
- Earth-stud (stud, nuts and plain washer) made of brass - Avail-
able in stainless steel AISI 316.
- Breather/drain valve with separate certificate.
- Cable-glands and blanking-plugs with separate certificate.
- Mounting bracket for terminal block made of zinc plated steel,
brass, copper or stainless steel.
- Earth Terminal bar.
- Pad-lockable kit for enclosure (additional external acces-
sory).
Only approved and genuine SCAME accessories must be used.
3.2.1 Earth Terminal Bar
Earth terminal bar is made in copper with stainless steel screw in
order to connect cable from 0.5mm² to 35mm², as indicated in
the following table.
The wire shall be terminated with a crimping lugs.
For Creepage and Clearance distance refer to table 3.
The minimum cross section area of PE conductors shall be fol-
lowing the table:
Cross-sectional area of
phase conductors, S mm
S ≤ 16
16 < S ≤ 35
S > 35
Torque Values
Maximum Cable
Cross Section
2.5 mm²
6 mm²
16 mm²
35 mm²
3.2.2 PadLockable
When Padlock is used, connect through its terminal-screw to earth.
3.3 Terminal fitting
Any ATEX certified terminal "Ex e" according to IEC EN 60079-7:
2007 can be used. Terminals shall be rail or internal plate
mounted. Terminals must be installed in accordance with the op-
erating instructions issued by the respective manufacturer and in
compliance with requirements for clearance/creepage, cross-con-
nections and earthing. All wiring must be carried out in accor-
dance with the code of practice and installation standards in
hazardous areas like IEC EN 60079-14. Use the correct size of
8
Minimum cross-sectional
area of the corresponding
2
protective conductor, S p mm
S
16
0,5 S
Earth-Bar
Pitch Torque Nm
Screw
M4 10 mm
M4 11 mm
M5 13 mm
M6 18 mm
2
1.2
1.2
2
2.5