E2S STExJ2 User manual

INSTRUCTION MANUAL
STExJ2
Flameproof Junction Box
For use in Flammable Gas and Dust Atmospheres
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-501-IS
Issue 4
04-01-21
Sheet 1 of 5
STExJ2
1) Warnings
•POTENTIAL ELECTROSTATIC CHARGING HAZARD.
•DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE IS
PRESENT.
•ALL ENTRIES M20 X 1.5MM.
•USE SUITABLE RATED CABLES AND CABLE GLANDS
IF TEMPERATURE EXCEEDS AS PER STANDARDS
INDICATIONS BELOW.
FOR ATEX / IECEx STANDARDS:
70ºC AT ENTRY OR 80ºC AT BRANCHING POINT.
FOR NEC / CEC STANDARDS:
60ºC AT ENTRY OR 60ºC AT BRANCHING POINT.
2) Marking & Rating Information
All units have a rating label, which carries the following
important information:
Unit Type No.:
STExJ2
Max. Voltage:
60Vdc
260Vac 50/60Hz
Max Power Dissipation:
5W
Table 1: Electrical Ratings.
2.1. ATEX / IECEx Ratings
Standards
EN60079-0:2012+A1:2013 / IEC60079-0:2011 (Ed 6):
Explosive Atmospheres - Equipment. General requirements
EN60079-1:2014 / IEC60079-1:2014 (Ed 7):
Explosive Atmospheres - Equipment protection by
flameproof enclosures "d"
BS EN 60079-31:2014 / IEC 60079-31:2013 (Ed 2):
Explosive Atmospheres - Equipment dust ignition protection
by enclosure "t"
Ratings
STExJ2
Ex db IIC T5 Gb Ta -50°C to +70°C
Ex db IIC T6 Gb Ta -50°C to +65°C
Ex tb IIIC T85°C Db Ta -50°C to +70°C
Certificate No.
DEMKO 16 ATEX 1466X
IECEx ULD 16.0017X
Epsilon x, Equipment
Group and Category:
II 2G
II 2D
CE Marking
Notified Body No.
2813
2.2. NEC / CEC Ratings
All models are approved for use as Visual Signal Device for
use as General Signalling:
UL1638A & CSA C22.2 No 205-17
NEC Class / Zone Ratings US Codes
Standards
UL 60079-0 (Ed. 7) 04/15/2020
Explosive Atmospheres - Part 0: Equipment - General
Requirements
UL 60079-1 (Ed. 7) 2015
Explosive Atmospheres - Part 1: Equipment Protection by
Flameproof Enclosures 'd'
Ratings
STExJ2
Class 1 Zone 1 AEx db IIC T5 Gb Ta -50°C to +70°C
Class 1 Zone 1 AEx db IIC T6 Gb Ta -50°C to +65°C
Installation must be carried out in compliance with the National
Electric Code.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-501-IS
Issue 4
04-01-21
Sheet 2 of 5
CEC Class / Zone Ratings Canada Codes
Standards
CAN/CSA C22.2 No. 60079-0 (Ed. 4) 02/2019
Explosive Atmospheres - Part 0: Equipment - General
Requirements
CAN/CSA C22.2 No. 60079-1 (Ed. 3) 2016
Electrical Apparatus for Explosive Gas Atmospheres - Part
1: Flameproof Enclosures 'd'
Ratings
STExJ2
Ex db IIC T5 Gb Ta -50°C to +70°C
Ex db IIC T6 Gb Ta -50°C to +65°C
Installation must be carried out in compliance with the
Canadian Electric Code.
NEC & CEC Class / Division Ratings for US / Canada,
USL CNL
Standards
UL1638A (Ed. 1) 2016
Standard for Visual Signal Appliances for General
Signalling Use
CSA C22.2 No. 205-17 (Ed. 3) 2017
Signal Equipment
Ratings
STExJ2
Class I Div 2 Group ABCD T5 Ta -50°C to +70°C
Class I Div 2 Group ABCD T6 Ta -50°C to +65°C
Installation must be carried out in compliance with the National
Electric Code / Canadian Electric Code.
3) Zones, Gas Group, Category and
Temperature Classification
The units can be installed in locations with the following
conditions:
Area Classification
Zone 1
Explosive gas air mixture likely to occur in
normal operation.
Zone 2
Explosive gas air mixture not likely to occur in
normal operation, and if it does, it will only
exist for a short time.
Zone 21
(ATEX / IECEx only)
Explosive dust air mixture likely to occur in
normal operation.
Zone 22
(ATEX / IECEx only)
Explosive dust air mixture not likely to occur
in normal operation, and if it does, it will only
exist for a short time.
Gas Groupings
Group IIA
Propane
Group IIB
Ethylene
Group IIC
Hydrogen and Acetylene
Temperature Classification for Gas Applications
T1
450ºC
T2
300ºC
T3
200ºC
T4
135ºC
T5
100ºC
T6
85ºC
Dust Groupings
(ATEX / IECEx only)
Group IIIA
Combustible Flyings
Group IIIB
Non-conductive Dust
Group IIIC
Conductive Dust
Maximum Surface Temperature for Dust Applications
(ATEX / IECEx only)
STExJ2
80ºC
Equipment Category
2G / 2D
Equipment Level Protection
Gb, Gc, Db, Dc
Ambient Temperature Range
-50°C to +70°C
IP Rating
IP6X to EN/IEC60079-0
IP66 to EN60529
4) Special Conditions of safe use
Repair of the flame path / flameproof joints is not permitted.
Figure 1: Flame Path.
The metallic enclosure has a non-conductive coating. These
may generate an ignition-capable level of electrostatic charges
under certain extreme conditions. The user should ensure that
the equipment is not installed in a location where it may be
subjected to external conditions that might cause a build-up of
electrostatic charges on non-conducting surfaces.
5) Product Mounting and Access
5.1. Location and Mounting
The location of the junction boxs should be made with due
regard to the area over which the warning signal must be
visible. They should only be fixed to services that can carry the
weight of the unit.
The STEx junction boxes should be securely bolted to a flat
surface using 9.0mm diameter bolt holes in the base of the
unit. See figure 2.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-501-IS
Issue 4
04-01-21
Sheet 3 of 5
Fig. 2: Fixing Location for Junction Box.
5.2. Access to the Flameproof Enclosure
In order to connect cabling in the junction box it is necessary
to remove the flameproof cover to gain access to the
flameproof chamber. To access the Ex d chamber, loosen the
M4 grub screw on the junction box cover. Open the enclosure
by turning the junction box cover counterclockwise and remove
the cover taking extreme care not to damage the flameproof
threads in the process (see figure 3).
Fig. 3: Accessing the Explosion Proof Enclosure.
On completion of the installation, the flameproof threaded
joints should be inspected to ensure that they are clean and
that they have not been damaged during installation.
Flameproof threaded joints are not permitted to be repaired.
Ensure that the ‘O’ ring seal is in place.
When replacing 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 junction
box enclosure. Tighten the M4 grub screw.
6) Installation Requirements
6.1. Installation Standards Compliance
Warning –High voltage may be
present, risk of electric shock.
DO NOT open when energised,
disconnect power before opening.
The beacon must only be installed by suitably qualified
personnel in accordance with the latest issues of the relevant
standards.
ATEX / IECEx installation standards:
EN60079-14 / IEC60079-14: Explosive atmospheres -
Electrical installations design, selection and erection.
EN60079-10-1 / IEC60079-10-1: Explosive atmospheres -
Classification of areas. Explosive gas atmospheres.
EN60079-10-2 / IEC60079-10-2: Explosive atmospheres -
Classification of areas. Explosive dust atmospheres.
NEC Class / Zone, CEC Class / Zone, and NEC & CEC Class
/ Division installation standards:
National Electrical Code, NFPA 70 or CSA 22.1 Canadian
Electrical Code, Part I, Safety Standard for Electrical
Installations, Section 32.
The installation of the units must also be in accordance with
any local codes that may apply and should only be carried out
by a competent electrical engineer who has the necessary
training.
The STExJ2 is not intended for directly supporting live parts.
All conductors must be suitably insulated and secured against
loosening.
The Junction Box may be fitted with terminal blocks or active
modules up to a power consumption of 5W. Any module fitted
must be secured to the mounting bosses in the base of the
junction box and must maintain a minimum gap of 10mm to all
walls of the enclosure.
6.2. Cable Selection and Connections
When selecting the cable size, consideration must be given to
the input current that each unit draws (see table 1), the number
of junction boxes 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 junction boxes connected
to the line.
Electrical connections are to be made into the terminal blocks
in the flameproof enclosure (see figure 5 and figure 6), using
solid wire 0.5-4mm2 / AWG 20-12 or stranded wire, sizes 0.5-
2.5mm2 / AWG 24-14. Wire insulation needs to be stripped
8mm. Wires may be fitted securely with crimped ferrules.
Figure 4: Wire Preparation.
Terminal screws need to be tightened down with a tightening
torque of 0.45 Nm / 5 Lb-in.
Warning –Hot surfaces. External surfaces
and internal components may be hot after
operation, take care when handling the
equipment.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-501-IS
Issue 4
04-01-21
Sheet 4 of 5
Terminal Block Options Available
The STExJ2 can have two pre-fitted wire connectors: Terminal
Block Version or DIN Rail Version.
Figure 5: Terminal Block Version –STExJ2T01.
Figure 6: Terminal Block Version –STExJ2D01.
When connecting wires to the terminals great care should be
taken to dress the wires so that when the cover is inserted into
the chamber the wires do not exert excess pressure on the
terminal blocks. This is particularly important when using
cables with large cross-sectional areas such as 2.5mm².
Earthing
Junction box 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 (see figures 5 or 6).
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,
or to the bonded Earth terminals of DIN rail (see figure 6). 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.
6.3. Cable Glands, Blanking Elements & Adapters
For high ambient temperatures, the cable entry and the cable
branching point temperatures may exceed the following
temperatures:
•For ATEX / IECEx: 70ºC at entry or 80ºC at branching point.
•For NEC / CEC: 60ºC at entry or 60ºC at branching point.
Therefore, suitable heat resisting cables and cable glands
must be used with a rated service temperature at least as
stated in the Instructions document of the product being used.
Refer to STExB2 Xenon (D199-00-201-IS) and STExB2 LED
(D199-00-401-IS) Instructions.
Cable Glands
The cable gland entries have an M20 x 1.5 entry thread. Only
use suitably rated and certified cable glands, as per type of
approval, which must be suitable for the type of cable being
used and also meet the requirements of the current flameproof
installation standards (see section 6.1).
Blanking Plugs
When only one cable entry is used the other entries must be
closed with suitably rated and certified blanking plugs as per
type of approval.
Any unused cable entries must be closed with suitably rated
and certified blanking plugs.
Ingress Protection
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.
For use in Class I Division II locations, in order to maintain the
db type protection, flameproof conduit seals and/or cable
glands must be used.
Adapters
The STExJ2 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 as per the
applicable standards.
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.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-501-IS
Issue 4
04-01-21
Sheet 5 of 5
7) Maintenance, Overhaul and Repair
Maintenance, repair and overhaul of the equipment should
only be carried out by suitably qualified personnel in
accordance with the current relevant standards:
EN60079-19/IEC60079-19 Explosive atmospheres -
Equipment repair, overhaul and reclamation
EN 60079-17/IEC60079-17 Explosive atmospheres -
Electrical installations inspection and maintenance
Units must not be opened while an explosive atmosphere is
present.
If opening the unit during maintenance operations a clean
environment must be maintained and any dust layer removed
prior to opening the unit.
Electrostatic charging hazard - Clean only with a damp cloth.

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E2STelephone:+44(0)2087438880Fax:+44(0)2087404200Email:[email protected]www.e2s.comDC‐070_Issue_G(STEx).docx‐Page1of2‐QAF_252_Issue_5

EUDeclarationofConformity
Manufacturer:  EuropeanSafetySystemsLtd.
ImpressHouse,MansellRoad,Acton
London,W37QH
UnitedKingdom

AuthorisedRepresentative:E2SWarnsignaltechnikUG
Charlottenstrasse45‐51
72764Reutlingen
Germany

EquipmentType:  STExS1,STExS2,STExL1,STExL2
STExB2X05,STExB2X10,STExB2X15,STExB2X21
STExB2LD2,STExB2RT1
STExC1X05
STExJ2
Directive2014/34/EU:EquipmentandProtectiveSystemsforuseinPotentiallyExplosiveAtmospheres(ATEX)
NotifiedBodyforEUtypeExamination(ModuleB):ULInternationalDemkoA/S
NotifiedBodyNo.:0539
Borupvang5A,2750Ballerup,Denmark
EU‐typeExaminationCertificate(ModuleB):DEMKO16ATEX1466X
NotifiedBodyforQualityAssuranceNotification/ConformitytoEU‐type
basedon
qualityassuranceoftheproductionprocess(ModuleD):
SiraCertificationService
NotifiedBodyNo.:2813
CSAGroupNetherlandsB.V,Utrechtseweg310,6812AR,Arnhem,Netherlands
QualityAssuranceNotification(ModuleD):SIRA05ATEXM342
Provisionsfulfilledbytheequipment:II2GExdbIICT6…T3Gb
II2DExtbIIICT82°C…T137°CDb
IP6XDustProtectiontoEN60079‐0/EN60079‐31
Standardsapplied:ENIEC60079‐0:2018
EN60079‐1:2014
EN60079‐31:2014
Directive2014/30/EU:ElectromagneticCompatibilityDirective(EMC)
Standardsapplied:EN61000‐6‐1:2007
EN61000‐6‐2:2005
EN61000‐6‐3:2007/A1:2011/AC:2012
EN61000‐6‐4:2007/A1:2011
Directive2011/65/EU:Restrictionoftheuseofcertainhazardoussubstancesinelectricalandelectronicequipment(RoHS)
Theproductandallthecomponentscontainedwithinitareinaccordancewiththerestrictionoftheuseofhazardoussubstancesinelectricalandelectronic
equipment,includingamendmentbyDirective2015/863/EU.

Regulation(EC)1907/2006:Registration,Evaluation,AuthorisationandRestrictionofChemicals(REACH)
Theproductandallthecomponentscontainedwithinitarefreefromsubstancesofveryhighconcern.
OtherStandardsandRegulations
EN60529:1991/A1:2000/A2:2013‐Degreesofprotectionprovidedbyenclosures(IPcode)–enclosureratedIP66
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E2STelephone:+44(0)2087438880Fax:+44(0)2087404200Email:[email protected]www.e2s.comDC‐070_Issue_G(STEx).docx‐Page2of2‐QAF_252_Issue_5
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MartinStreetzDocumentNo.:DC‐070_Issue_G
QualityAssuranceManagerDateandPlaceofIssue:London,03/12/2021
EUDeclarationofConformity


OnbehalfofEuropeanSafetySystemsLtd.,Ideclarethat,onthedatetheequipmentaccompaniedbythisdeclarationisplacedonthemarket,theequipment
conformswithalltechnicalandregulatoryrequirementsoftheabovelisteddirectives,regulationsandstandards.

ThisDeclarationisissuedunderthesoleresponsibilityofthemanufacturer.