Stahl 8264 User manual

Operating Instructions
Ex d Enclosures 
in Aluminium or
Stainless Steel /
Flameproof 
Encapsulation
> 8264/- Empty Enclosure

Contents
2167224 / 8264604300
2011-01-28·BA00·III·en·02
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
1 Contents
1 Contents ................................................................................................................2
2 General Information ...............................................................................................2
3 General Safety Instructions ...................................................................................3
4 Designated Use .....................................................................................................4
5 Technical Data ......................................................................................................4
6 Transport, Storage and Disposal ...........................................................................6
7 Assembly ...............................................................................................................7
8 Installation .............................................................................................................8
9 Maintenance ........................................................................................................10
10 Accessories and Spare Parts .............................................................................10
11 EC Declaration of Conformity ..............................................................................11
2 General Information
2.1 Manufacturer
R. STAHL Schaltgeräte GmbH
Am Bahnhof 30
74638 Waldenburg
Germany
Phone: [phone]
Fax: [phone]
Internet: www.stahl-ex.com
2.2 Operating Instructions Information
ID-No.: 167224 / 8264604300
Publication Code: 2011-01-28·BA00·III·en·02
We reserve the right to make technical changes without notice.
2.3 Symbols Used
Action request: 
Describes actions to be carried out by the user.
Reaction sign: 
Describes the results or the reactions to the actions taken.
XBullet
Sentinel:
Describes the notes and recommendations.
Warning sign; danger from energised parts!
Warning sign: 
Danger due to an explosive atmosphere!

167224 / 8264604300
2011-01-28·BA00·III·en·02
General Safety Instructions
3
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
3 General Safety Instructions
3.1 Safety instructions for assembly and operating personnel
The operating instructions contain basic safety instructions which are to be observed 
during installation, operation and maintenance. Non-observance will endanger persons,
plant and the environment.
Before assembly/commissioning:
Read through the operating instructions.
Give adequate training to the assembly and operating personnel.
Ensure that the contents of the operating instructions are fully understood by the 
ersonnel in charge.
The national installation and assembly regulations (e.g. IEC/EN 60079-14) apply.
If you have questions:
Contact the manufacturer.
When operating the devices:
Ensure the operating instructions are made available on location at all times.
Observe safety instructions.
Observe national safety instructions and accident prevention regulations.
Only run the device according to its performance data.
Servicing/maintenance or repair work which are not described in the operating 
instructions must not be performed without prior agreement with the manufacturer.
Any damage may render explosion protection of the device null and void.
No changes to the device impairing their explosion protection are 
permitted.
Install the device only if it is undamaged, dry and clean.
3.2 Warnings
Warnings are sub-divided in these operating instructions according to the following
scheme:
They are always identified by the signalling word “WARNING“ and sometimes also have
a symbol which is specific to the danger involved.
WARNING
Danger due to unauthorised work being performed on the device!
There is a risk of injury to persons and damage to equipment.
Assembly, installation, commissioning, operation and maintenance must only be 
performed by personnel who are both authorised and suitably trained for this purpose.
WARNING
Type and source of the danger!
Possible consequences.
Measures to avoid danger.

Designated Use
4167224 / 8264604300
2011-01-28·BA00·III·en·02
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
3.3 Conformity to Standards
The empty enclosures 8264 comply with the following standards and directives:
XDirective 94/9/EC
XIEC 60079-0, IEC 60079-1, IEC 61241-0, IEC 61241-1
XEN 60079-0, EN 60079-1, EN 61241-0, EN 61241-1
4 Designated Use
The enclosures are used to build motor starters, control stations and terminal boxes. 
Furthermore they are suitable for measuring equipment and customer specific control
units.
By using this technology the installation of sparcing and arcing equipment in a Zone 1, 2,
21 or 22 application is enabled.
For direct cable entry into the enclosures flameproof cable entry glands or threaded holes
to the conduit connection can be used. For indirect cable entry connection enclosures,
which comply with increased safety type of protection, are used, e.g. series 8146 and
8125 enclosures.
5 Technical Data
WARNING
Use the device for its intended purpose only!
Otherwise, the manufacturer’s liability and warranty expire.
Only use the device under the operating conditions described in the operating 
instructions.
The device must be used in areas subject to explosion hazards only according to 
these operating instructions.
Explosion protection
Gas explosion protection EII 2G Ex d IIB
EII 2G Ex d IIB + H2(on request)
Gas explosion protection
(IECEx)
Ex d IIB
Ex d IIB + H2(on request)
Dust explosion protection EII 2D Ex tD A21 IP6x
Dust explosion protection
(IECEx)
Ex tD A21 IP6x
Certificates KEMA 01 ATEX 2145 U
IECEx certification IECEx KEM 07.0050U
Rated operational voltage Uemax. 11 kV, AC/DC
Rated operational current Iemax. 1250 A
Terminals max. 300 mm2
Degree of protection Gas: IP54, IP66 optional
Dust: IP6X
Enclosure 8264/....-2: Stainless steel (SS316)
8264/....-3: Aluminium AlSi7Mg (saltwater-proof according to EN 13195-1)
Ambient temperature range standard: - 55 ... + 60 °C
with explosion protection Ex d IIB + H2: - 20 °C ... + 60 °C (on request)

167224 / 8264604300
2011-01-28·BA00·III·en·02
Technical Data
5
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
Power dissipation
Weight Stainless Steel
Aluminum
Ta= 40 °C Ta= 50 °C Ta= 60 °C
EmptyenclosureT6T5T4 T6T5 T4T6T5T4
8264/.112
8264/.114
55 W 80 W 170 W 34 W 54 W 125 W 19 W 35 W 89 W
8264/.212
8264/.214
75 W 120 W 235 W 47 W 81 W 173 W 26 W 52 W 122 W
8264/.222
8264/.224
115 W 160 W 320 W 71 W 108 W 236 W 39 W 69 W 167 W
8264/.223
8264/.225
125 W 190 W 370 W 78 W 129 W 273 W 43 W 82 W 193 W
8264/.323
8264/.325
160 W 240 W 465 W 99 W 163 W 343 W 55 W 104 W 242 W
8264/.333
8264/.335
200 W 300 W 565 W 116 W 190 W 417 W 64 W 122 W 294 W
8264/.933
8264/.935
301 W 447 W 810 W 207 W 355 W 598 W 114 W 227 W 422 W
8264/.993
8264/.995
347 W 520 W 933 W 248 W 405 W 826 W 137 W 259 W 583 W
Empty enclosure Enclosure Enclosure
cover
8264/.112-2 32 kg 9 kg
8264/.212-2 52 kg 14 kg
8264/.222-2 82 kg 23 kg
8264/.223-2 65 kg 23 kg
8264/.323-2 110 kg 31 kg
8264/.333-2 140 kg 43 kg
8264/.933-2 185 kg 67 kg
8264/.993-2 270 kg 95 kg
Empty enclosure Enclosure Enclosure
cover
8264/.112-3 11 kg 3 kg
8264/.114-3 12 kg 4 kg
8264/.212-3 19 kg 4 kg
8264/.214-3 20 kg 5 kg
8264/.222-3 25 kg 6 kg
8264/.224-3 27 kg 8 kg
8264/.223-3 30 kg 6 kg
8264/.225-3 32 kg 8 kg
8264/.323-3 42 kg 11 kg
8264/.325-3 42 kg 11 kg
8264/.333-3 52 kg 14 kg
8264/.335-3 52 kg 14 kg
8264/.933-3 90 kg 32 kg
8264/.935-3 90 kg 32 kg
8264/.993-3 153 kg 51 kg
8264/.995-3 150 kg 48 kg

Transport, Storage and Disposal
6167224 / 8264604300
2011-01-28·BA00·III·en·02
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
6 Transport, Storage and Disposal
Transport
Shock-free in its original carton, do not drop, handle carefully.
Storage
Store in a dry place in its original packaging
Disposal
Ensure environmentally friendly disposal of all components according to the legal 
regulations.
Dimensional Drawings (All Dimensions in mm) - Subject to Alterations
10294E00
K = M12
06815E00
07298E00
ABCI J
8264/.112 235 235 270 205 205
8264/.114 235 235 260 205 205
8264/.212 360 235 270 330 205
8264/.214 360 235 260 330 205
8264/.222 360 360 270 330 330
8264/.224 360 360 260 330 330
8264/.223 360 360 340 330 330
8264/.225 360 360 330 330 330
8264/.323 480 360 340 450 330
8264/.325 480 360 330 450 330
8264/.333 480 480 340 450 330
8264/.335 480 480 330 450 330
8264/.933 730 480 340 700 450
8264/. 935 730 480 330 700 450
8264/.993 730 730 340 700 700
8264/.995 730 730 330 700 700
J
I
K

167224 / 8264604300
2011-01-28·BA00·III·en·02
Assembly
7
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
7 Assembly
Place the Ex d enclosure on the mounting rail and connect it with M12 screws 
(pay attention to the weight, see chapter "Technical Data").
If deployed outdoors / where exposure to the elements is the case, it is 
recommended to provide the explosion-protected electrical equipment with a
protective cover or wall.
WARNING
Danger through not approved cable glands!
If a not approved cable entry gland is used, explosion protection can no
longer be guaranteed.
Only use cable entry glands, which are approved of for the required type of
protection.
When selecting or replacing cable entry glands, refer to the component
documentation for the type and size of thread.
WARNING
Danger through open holes or unused cable entries on the 
Ex e connection enclosure!
Explosion protection is no longer guaranteed if holes or cable entries in the
Ex e connection enclosure are left open.
Always seal any open holes and unused cable entries with the certified
stopping plugs or plugs.
When selecting or replacing appropriate stopping plugs, refer to the 
component documentation for the type and size of thread.
WARNING
Danger from excessive weight!
Use suitable lifting tool.
Secure to prevent from toppling.

Installation
8167224 / 8264604300
2011-01-28·BA00·III·en·02
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
8 Installation
Opening the enclosure cover
Unfasten the screws on the enclosure.
Open and remove the enclosure cover carefully (pay attention to the weight, 
see chapter "Technical Data").
WARNING
Installation may only be performed by qualified personnel!
Installation of the devices may only be carried out by appropriately authorised and
trained personnel.
Observe the relevant national regulations in the country of use.
WARNING
Incorrectly installed components!
Explosion protection cannot be guaranteed any more if the components
are incorrectly installed.
If crimped wire ends are used, these must be gas-tight and attached using
an appropriate tool.
WARNING
Danger from damaged joint surfaces!
If the joint surfaces are damaged, it can no longer be guaranteed that the
joint is flameproof.
Handle the enclosure cover with care when putting it down and placing it
on the enclosure.
If the enclosure cover or the enclosure has a damaged joint surface, 
replace the respective part immediately.
WARNING
Danger from an excessively heavy enclosure cover!
When opening, take into consideration that the enclosure cover is very heavy 
(see chapter "Technical Data").
Use suitable lifting tool.
Attach a suitable hinge as necessary (see catalogue).

167224 / 8264604300
2011-01-28·BA00·III·en·02
Installation
9
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
Closing the enclosure cover
Treat the joint surface of the cover with acid-free grease (OKS seawater-resistant).
Close and attach the enclosure cover carefully (pay attention to the weight, 
see chapter "Technical Data").
Use the specified tightening torque.
Connection terminals
Tighten the screws of the connection terminals in accordance with the specified 
connection torques.
Protective earth conductor
06817E00
When using the external earthing connection terminal, connect the PE conductor to the
enclosure (1) with a cable lug (3).
After the cable lug use a washer (2) and secure the screw (5) with a screw locking (4)
to prevent it from coming loose.
Regardless of the operating voltage, connect all bare, non-energised metal parts to
earth / grounding system.
The external protective earthing conductor is designed to be fitted with a cable lug. The
cable must be laid snugly against the enclosure so that a entanglement of the cabling
is prevented.
Type Tightening torque [Nm] Screw type
8264/.112-.
8264/.212-.
8264/.222-.
8264/.223-.
8264/.323-.
8264/.333-.
8264/.933-3
8264/.993-3
20 Cheese-head screws 
M10 x 30 A4-70 as per ISO 4762
8264/.933-2
8264/.993-2
32 Cheese-head screws 
M12 x 30 A4-80 as per ISO 4762
Dimension of screws M3 M4 M5 M6 M8 M10
Connection torque
[Nm]
0.8 2.0 3.5 5.0 10.0 17.0

Maintenance
10 167224 / 8264604300
2011-01-28·BA00·III·en·02
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
9 Maintenance
9.1 Cleaning
XClean with a cloth, brush, vacuum cleaner or similar items.
10 Accessories and Spare Parts
WARNING
Danger from energised parts!
Risk of severe injuries.
Before any maintenance work commences, disconnect the device from the
power supply.
Secure the device against unauthorised activation.
WARNING
Risk due to unauthorised work being performed on the device!
There is a risk of injury and damage to equipment.
Mounting, installation, commissioning, operation and maintenance must only be 
performed by personnel who are both authorised and suitably trained for this purpose.
The dimensions of the flameproof flat joint do not comply with tables 1 or 2 from
standard IEC/EN 60079-1. Contact the manufacturer before starting to work on the
joint surfaces.
WARNING
Short-circuit in the circuit
After multiple short circuits, the flameproof encapsulation is no longer 
guaranteed.
After a short circuit, check the functionality of the device.
Replace the entire device if needed.
WARNING
Use of non-approved accessories and spare parts.
The manufacturer’s liability and warranty expire.
Use only original accessories and original spare parts manufactured by R. STAHL.

167224 / 8264604300
2011-01-28·BA00·III·en·02
EC Declaration of Conformity
11
Ex d Enclosures in Aluminium or
Stainless Steel / Flameproof
Encapsulation 8264/- Empty Enclosure
11 EC Declaration of Conformity

167224 / 8264604300
2011-01-28·BA00·III·en·02