E2S STExL1R008 Instruction manual - page 3
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European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH sales@e-2-s.com Tel: +44 (0)208 743 8880
www.e-2-s.com Fax: +44 (0)208 740 4200
Document No. D199-00-101-IS Issue 1 13-07-16 Sheet 3 of 4
On completion of the installation, the flameproof threaded
joint should be inspected to ensure that they are clean and
that they have not been damaged during installation. Repair
of the flamepath / flameproof joints is not permitted. Also
check that the ‘O’ ring seal is in place. When fitting the
flameproof cover ensure the thread is engaged correctly.
Fully tighten the cover all the way, ensure no gap is visible
between the cover and base of the loudspeaker enclosure.
Tighten the M4 grub screw.
8) Power Supply Selection
It is important that a suitable power supply is used to run the
loudspeaker. The power supply selected must have the
necessary capacity to provide the input current to all of the
loudspeakers
The following table shows the input current taken by the
various loudspeakers:
A supply voltage variation of +/-10% outside the voltage
range is permissible.
Nominal current at nominal voltage
Max rated current at worst case supply voltage and flash rate.
9) Selection of Cable. Cable Glands, Blanking
Elements & Adapters
When selecting the cable size, consideration must be given
to the input current that each unit draws (see table above),
the number of loudspeaker on the line and the length of the
cable runs. The cable size selected must have the necessary
capacity to provide the input current to all of the loudspeakers
connected to the line.
For ambient temperatures over +40ºC the cable entry
temperature may exceed +70ºC and therefore suitable heat
resisting cables and cable glands must be used as per table
below
STExL1:
Ambient
Temp.
45ºC 50ºC 55ºC 60ºC 65ºC 70ºC
Min. Rating
of cables
and cable
glands
70ºC 75ºC 80ºC 85ºC 90ºC 95ºC
STExL2:
Ambient
Temp.
40ºC 45ºC 50ºC 55ºC 60ºC 65ºC 70ºC
Min. Rating
of cables
and cable
glands
75ºC 80ºC 85ºC 90ºC 95ºC 100ºC 105ºC
The cable entries have an M20 x 1.5 – 6H entry thread. If the
installation is made using cable glands, only suitably rated
and ATEX / IECEx certified cable glands must be used. They
must be suitable for the type of cable being used and also
meet the requirements of the current installation standards
EN 60079-14 / IEC60079-14.
Any unused cable entries must be closed with suitably rated
and ATEX / IECEx certified blanking plugs.
If the installation is made using conduit, openings must have
a sealing fitting connected as close as practical to the wall of
the enclosure, but in no case more than the size of the
conduit or 50mm, whichever is the lesser.
If a high IP (Ingress Protection) rating is required then a
suitable sealing washer must be fitted under the cable glands
or blanking plugs. A minimum ingress protection rating of
IP6X must be maintained for installations in explosive dust
atmospheres.
For combustible dust applications,¬ the cable entry device
and blanking elements shall be in type of explosion protection
and shall have an IP 6X rating.
The STEx loudspeaker range can be supplied with the
following types of adapters:
M20 to ½” NPT
M20 to ¾” NPT
M20 to M25
It is important to note that stopping plugs cannot be fitted
onto adapters, only directly onto the M20 entries.
Any other adapters used must be suitably rated and ATEX /
IECEx certified adapters.
10) Earthing
Both AC and DC loudspeaker units must be connected to an
earth according to EN/IEC 60079/14. The units are provided
with internal and external earth terminals which are both
located on the terminal chamber section of the unit
Internal earthing connections should be made to the Internal
Earth terminal in the base of the housing using a ring crimp
terminal to secure the earth conductor under the earth clamp.
The earth conductor should be at least equal in size and
rating to the incoming power conductors.
External earthing connections should be made to the M5
earth stud, using a ring crimp terminal to secure the earth
conductor to the earth stud. The external earth conductor
should be at least 4mm2 in size.
11) Cable Connections
Electrical connections are to be made into the terminal blocks
on the PCBA located in the flameproof enclosure. See
section 7 of this manual for access to the flameproof
enclosure.
Wires having a cross sectional area between 0.5 mm² to
2.5mm² can be connected to each terminal way. If an input
and output wire is required the 2-off Live/Neutral or +/-
terminals can be used. If fitting 2-off wires to one terminal
way the sum of the 2-off wires must be a maximum cross
sectional area of 2.5mm². Strip wires to 8mm. Wires may also
be fitted using ferrules. Terminal screws need to be tightened
down with a tightening torque of 0.45 Nm / 5 Lb-in. When
connecting wires to the terminals great care should be taken
to dress the wires so that when the cover is inserted into the
Model No.
Input
Power
(Watts)
Max. I/P
Volts
STExL1R008 8Ohm
15 10.95
STExL1R016 16Ohm
15 15.49
STExL1V070 70V
Line
15 70
STExL1V100 100V
Line 15 100
STExL2R008 8Ohm
25 14.14
STExL2R016 16Ohm
25 20
STExL2V070 70V
Line
25 70
STExL2V100 100V
Line 25 100