Atexor SLAM TrafoEx 400 Quick guide

24.2.2020
Atexor Oy Seinäjoki • P.O.Box 89 • FIN-60101 Seinäjoki • FINLAND
www.atexor.com • Tel: [phone] • Trade Reg. No. 486.515 • VAT No. FI08370823
(Certification N:o EESF 20 ATEX 014X and IECEx EESF 20.0003X)
Thank you for choosing SLAM®TrafoEx transformer for your job site. Purpose of this manual
is to provide you all the necessary safety and product information to conduct your job
conveniently and without any risks for health and safety.
Instructions for Safe Use

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Contents
Instructions for Safe Use.....................................................................................................................................1
1. Introduction to SLAM®TrafoEx.....................................................................................................................3
1.1 Technical data...........................................................................................................................................3
1.1.1 2P+E system (PELV))..........................................................................................................................4
1.1.2 2P system (SELV)...............................................................................................................................4
1.2 Certification of equipment ..........................................................................................................................5
1.3 Standard unit construction .........................................................................................................................6
1.4 Quality Guaranteed ...................................................................................................................................7
1.4.1 General...............................................................................................................................................7
1.4.2 Individual testing reports .....................................................................................................................7
2. Prior to use..................................................................................................................................................8
2.1 Selection of right equipment ......................................................................................................................8
2.1.1 Intended purpose of equipment ...........................................................................................................8
2.1.2 Application of use (Zone XX) in accordance with equipment category..................................................9
2.1.3 Gas explosion group (IIA, IIB or IIC) in accordance with Equipment group (IIA, IIB or IIC)....................9
2.1.4 Temperature class of the equipment....................................................................................................9
2.1.5 Environmental criteria........................................................................................................................10
3. Operating instructions................................................................................................................................11
3.1 Personnel................................................................................................................................................11
3.2 Visual inspection of SLAM®TrafoEx ........................................................................................................11
3.3 Special attention on 2-pole use (24 V or 42 V) .........................................................................................11
3.5 Connection to the supply .........................................................................................................................11
3.5.1 Requirements for supply (electricity)..................................................................................................11
3.5.2 Special conditions .............................................................................................................................12
4Inspection & Maintenance..........................................................................................................................14
4.1 After Use.................................................................................................................................................14
4.2 Maintenance............................................................................................................................................14
4.3 Testing....................................................................................................................................................14
4.4 Repair report ...........................................................................................................................................15
Helpdesk.......................................................................................................................................................16

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1.Introduction to SLAM®TrafoEx
(Certification N:o EESF 20 ATEX 014X and IECEx EESF 20.0003X)
This instruction manual guides you through the process of selecting and adopting SLAM®TrafoEx –
transformer for your work site. The manual regards the following SLAM®TrafoEx -types:
1.1 Technical data
SLAM®TrafoEx 400 (later STREX400) 2P +E version (PELV)
SLAM®TrafoEx 400 (later STREX400) 2P version (SELV)

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1.1.1 2P+E system (PELV))
1.1.2 2P system (SELV)
Transformer is equipped with a external bonding point which can be used if preferred. Using the bonding
point is not mandatory, since the PE conductor is connected through the supply cable.

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1.2 Certification of equipment
The SLAM®TrafoEx–series has been designed, tested and certified (according to ATEX and IECEx) for
portable or transportable use. There is “X” –mark in the certificate for special conditions of safe use of
the equipment. Please refer to the certificate of the equipment or section 3.5.2 for more information. The
equipment is to used properly and according to its ratings, documentation and local applicable laws.
Local, national certificates of these units may exist outside the region of EU. Possible variations is
marked on the typelabel of the product (e.g IP XX)
The aforementioned SLAM®TrafoEx–types are certified e.g as follows. You may find brief explanation
of certificate beneath:
Transformers with ATEX certification
CE0537 II 2 GD Ex eb IIC T4/T3 Gb
Ex tb IIIC T70°C Db
Transformers with IECEx certification
Ex eb IIC T4/T3 Gb
CE0537 = Valid production quality system approved and notified by EESF (Finnish Notified Body, listed
by EC)
= Certified for explosion-hazardous areas
II = Certified for use in areas excluding mines
2= Equipment category (suitable for Zone 1&21 and Zone 2&22)
G= Certification taking account explosion hazardous GASES
D= Certification taking account explosion hazardous DUSTS
Explanation of marking for explosion hazardous area due to Gases (Ex eb IIC T4/T3 Gb)
Ex = Certified for use in explosion hazardous areas
eb = Explosion protection method increased safety (of certain components)
IIC = Equipment group (for all IIA, IIB and IIC gases)
T4 = Maximum inside temperature of the unit is 135 °C (within the ambient temperature range of -
20°C … +45°C)
T3 = Maximum inside temperature of the unit is 200 °C (within the ambient temperature range of
+45°C … +55°C)
Gb = Explosion Protection Level (EPL) marking for “HIGH” level of protection. Equipment for explosive
GAS atmospheres, which is not a source of ignition in normal operation or during expected malfunctions

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Explanation of marking for explosion hazardous area due to Dusts
(Ex tb IIIC T70°C Db):
Ex = Certified for use in explosion hazardous areas
tb = Explosion protection method “protection by enclosure”
IIIC = Equipment group for conductive dusts (including IIIA, IIIB and IIIC dusts)
T70°C = Maximum OUTSIDE surface temperature of the unit is 70 °C (within the ambient temperature
range of -20°C - +55°C)
Db = Explosion Protection Level (EPL) marking for “HIGH” level of protection. Equipment for explosive
DUST atmospheres, which is not a source of ignition in normal operation or during expected
malfunctions
1.3 Standard unit construction
The following list familiarizes you with some common unit features important to recognize:
2P+E: Electrical system having Phase (P), Neutral (N) and Protective Earth (PE). With Extra-Low-
Voltage system is recognized as PELV (Protective Extra Low Voltage)
2P : Electrical system having Phase (P), Neutral (N). With Extra-Low-Voltage this system is recognized
as SELV (Safety Extra Low Voltage). No means for bonding available.
Cable: Standard cable of the SLAM®TrafoEx–series is H-FLEX C-PUR. This cable has polyurethane
(PUR) outer sleeve and copper sheathing. PUR withstands well chemicals as well mechanical wearing.
Fuse: SLAM®TrafoEx has two fuses for protecting against dangers of electrical e.g shortcircuits of
relating equipment/systems.One of the fuses is in the primary side (L conductor of supply) protecting
against supply failures. One of the fuses is in the secondary side (L conductor) protecting against failures
of relating equipment connected to the sockets of the TrafoEx transformer.
Other common accessories (optional):
To view options on accessories, please visit http://www.atexor.com for further study or call [phone]
3250
In case of activated fuse protection: Stop the work in hazardous area
immediately until the likely shortcircuit of relating equipment/system has
been identified and corrected.
Shortcircuit is definitely a source of ignition which may cause an explosion !

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1.4 Quality Guaranteed
1.4.1 General
The SLAM®TrafoEx–series is designed, certified, manufactured and tested under ISO 9001 quality
system as well as additional requirements of the Directive 2014/34/EU (ATEX). The SLAM®TrafoEx–
series is designed and tested according to the latest directives and standards. The referred directives
and standards of the production date in case are stated on the Declaration of Conformity which is
included in the delivery.
1.4.2 Individual testing reports
Each SLAM®–unit has its own individual serial number and is provided with an original, individual testing
report when leaving the factory. The year of manufacture is specified on the type label of the equipment.
Following tests have been done for SLAM®TrafoEx–units according to standards relating to portable
TrafoEx transformer for explosion hazardous area. The Declaration of Conformity is specifying the
relevant standards. The testing report included in the delivery specifies the results of the factory tests
for that particular unit. The testing report typically specifies the following tests:
PE –resistance test
The purpose of this test is to measure persistence of earth conductor.
Vital test for electrical safety as well as explosion safety because of e.g static electricity control.
The test current is 10A (current) and the overall resistance should not exceed 0,5 ohm.
Operation under load
Each of the sockets is tested with either 8A or 16A load. The output voltage has to be as specified for
the particular type of TrafoEx transformer
High voltage test (electrical strength)
The purpose of this test is to measure leakage current trough insulation. Vital test for revealing broken
components or similar failures which can not be identified visually. For TrafoEx transformer there are
three tests runned: Primary, Secondary and Primary agaist Secondary. Testing voltage applied is
2550VDC or 1500VAC. Maximum leakage current is 5mA.
Test of expected use of equipment
The TrafoEx transformer is subjected to shaking and vibration – to see that all the internal wires are
properly attached and components are not loose.
Operational test of TrafoEx transformer and accessories
The unit is plugged-in and checked that it is working properly after all accomplished tests above.
Visual inspection
A final check to see everything is fine (screws attached properly, wires connected and required markings
attached).

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2.Prior to use
2.1 Selection of right equipment
You need to be sure that the equipment you intend to take into explosion hazardous area matches up
with the zone classification and other safety requirements related. At least the following points should
be notified prior to use:
2.1.1 Intended purpose of equipment
Please keep in mind what the actual application of equipment is. For example in case the equipment is
to be moved when connected to the supply it needs to be designed for that purpose. If the certification
is mentioning “portable” it means that the equipment is suitable and tested for portable use. If the
certification does not mention portable it means that the equipment shall not be moved when it is in
operation.
SLAM®-units are designed and tested for portable or transportable use.

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2.1.2 Application of use (Zone XX) in accordance with equipment
category
Operator has the best knowledge of area classification at his site. To help the operators’ selection of
equipment the certification is describing the equipment category. For explosion hazardous areas there
are three equipment categories. SLAM®-units mentioned in this instruction fall into Category 2
equipment.
Category 1 product is suitable for use in Zones 0, 1 and 2 / (20, 21 and 22)
Category 2 product is suitable for use in Zones 1 and 2 / (21 and 22)
Category 3 product is suitable for use in Zones 2 / (22)
2.1.3 Gas explosion group IIA, IIB or IIC and dust explosion group IIIA,
IIIB or IIIC in accordance with Equipment group IIA, IIB or IIC for gases
and equipment group IIIA, IIIB or IIIC for dusts
This information is vital because the substances require different amount of energy to be ignited. Safety
requirements for equipment are not the same for different substances (e.g. static electricity
requirements).Therefore making the selection easier the gases are divided to three different groups (IIA,
IIB and IIC). Further information about the substances can be found from EN 60079-20 (Data for
flammable gases and vapours, relating to the use of electrical apparatus).
SLAM®-units mentioned in this instruction are Equipment group IIC for gases, group IIIC for dusts
2.1.4 Temperature class of the equipment
Please observe the Ignition Temperature (IT) of the substance creating the explosion hazard at your
site. Select the equipment based on IT of the substance. The temperature of the equipment must be
lower than IT. The highest temperature of the equipment is specified by using Temperature Classes T1
to T6.
Example:
Petroleum IT is approximately 250 Celsius Maximum allowed temperature class of the equipment is
T3 (< 200° C)
SLAM®-units mentioned in this instruction are Temperature Class T3/T4 (GASES)
SLAM®-units mentioned in this instruction maximum surface temperature of 70⁰C (DUSTS)

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2.1.5 Environmental criteria
Please observe the ambient temperature of the application in use because certification is valid for
temperatures between – 20°C --- + 55°C. Please see type label of the product for further data. If the
equipment is used in other temperatures than mentioned the safety can not be guaranteed.
Selection and use of equipment is always under the responsibility of the operator. Please note
that all of the aforementioned criteria are to be passed when selecting the equipment.
Please do not take any unnecessary risks.