Annexe to:
IECEx SIR 11.0054X Issue 0
Applicant:
Antech Limited
Apparatus:
Type X Wellhead Outlet
CERTIFICATION
For completeness the full description is repeated here.
The Type X Wellhead Outlet is a single, integral unit consisting a circular body and lid attached to, and closed
off by, a high pressure bulkhead thereby forming a terminal chamber, the Type X is rated at:
T Class
T6
T5
T3
Current (A)
24
3
3
Voltage (V)
440
440
275
Ambient Temperature Range
-20°C to +40°C
-20°C to +90°C
-40°C to +160°C
All mechanical parts are made from stainless steel, aluminium, aluminium-bronze, brass or beryllium-copper,
where aluminium is used, this contains less than 6% magnesium by mass. The body and lid have minimum
wall thicknesses of 9 mm and 6 mm respectively. The open base of the enclosure fits directly onto the
wellhead and is IP54 sealed against the surrounding atmosphere via an elastomeric rubber "O" ring seal. The
lid is similarly sealed to the body.
Although the cable from the wellhead is sealed into the high pressure bulkhead via a high pressure,
compression fitting which prevents the high wellhead pressure from entering the enclosure, this does not form
part of this certificate.
One, two or three AWG 18 (American Wire Gauge, 1.78 mm Overall Diameter), short, individual TFE (Teflon)
insulated, multi-strand, silver coated, copper conductor wires are fixed to the wellhead cable inside the high
pressure, compression fitting. These wires are sealed into the high pressure bulkhead via a combined
gland/terminal block mounting stanchion at the terminal chamber side. This combined gland seals the terminal
chamber via the use of an elastomeric rubber "O" ring on the outside and inner silicone rubber blanking
washer, through which the wellhead wires transit.
In the IECEx Version the wires are terminated into the Weidmuller Type MK6/3 (three way) terminal block, for
T6 and T5, these are approved by IECEx SIR 05.0037U, coded Ex e II, for T3 Weidmuller Type SAKK (single
way) rail mounted terminals are used these are approved by IECEx SIR 05.0032U, coded Ex e II.
Both internal and external earths (ground connections) are provided, with all parts plated to prevent corrosion.
Externally, the ground connection is made into the edge of the body, via an M4 cap head socket set screw.
The terminal lug is prevented from rotating during installation by a machined counter bored slot and secured
via a spring washer. The internal earth is similarly fitted into the terminal block mounting stanchion.
Connection is made using the supplied cable lugs.
For the T6 and T5 versions, the supply leads enter via an ‘Ex e’ certified cable gland, this gland is supplied by
the customer and chosen in accordance with a recognised Code of Practice/Installation Instructions. This is
typically threaded M20 but may be any suitable thread form and size.
For the T3 version, the supply leads enter via a Peppers Cable Glands Limited Type A3LF, certified cable gland
(supplied), approved by IECEx SIR 07.0096X, coded Ex e II. This is typically threaded M20 but may be any
suitable thread form and size and approved by the certificate.
The Type X Wellhead Outlet shall be installed in accordance with:
For T6 & T5 versions - See drawing AN-03177 sheet 7.
For T3 version - See drawing AN-08358 sheet 6
Date:
10 May 2011
Form 9530 Issue 1
For revision status refer to the drawings listed in
ExTR GB/SIR/ExTR11.0101/00
Page 1 of 2
Sira Certification Service
Rake Lane, Eccleston, Chester, CH4 9JN, England
Tel:
Fax:
Email:
Web:
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com
Annexe to:
IECEx SIR 11.0054X Issue 0
Applicant:
Antech Limited
Apparatus:
Type X Wellhead Outlet
CERTIFICATION
Conditions of Certification
i.
All terminal screws, used and unused, shall be tightened down in accordance with the following
requirements dependent upon the temperature range of the Type ‘X’ Wellhead Outlet:
Temperature range
-20°C to +40°C
-20°C to +90°C
-40°C to +160°C
Tightening requirements
Tightened down to between 1.2 and 2 Nm
Tightened down to between 1.2 and 2 Nm
Tightened down to between 0.5 and 1 Nm
ii.
Leads connected to the terminals shall be insulated for the appropriate temperature and voltage, and this
insulation shall extend to within 1 mm of the metal of the terminal throat.
iii.
Only one conductor shall be connected to each terminal way unless the multiple conductors have
previously been joined in a suitable manner (for example with a crimped bootlace ferrule) such that they
form a single cohesive item for insertion into the terminal way.
iv.
The user/installer shall use an appropriate method to ensure a minimum ingress protection of IP54, the
cable entries shall comply with the following requirements dependent upon the temperature range of the
Type X Well Head Outlet:
Temperature range
-20°C to +40°C
-20°C to +90°C
-40°C to +160°C
v.
Cable entry requirements
Chosen in accordance with a recognised Code of Practice/Installation Instructions
Chosen in accordance with a recognised Code of Practice/Installation Instructions
Peppers Cable Gland Type A3LF with a silicone (white) seal, approved by IECEx
certificate number IECEx SIR 07.0096X and coded Ex e II
To maintain IP54 and creepage and clearance distances, the Type ‘X’ Wellhead Outlet units shall be
assembled in accordance with the documents listed below dependent upon the temperature range of the
unit:
Temperature range
-20°C to +40°C
-20°C to +90°C
-40°C to +160°C
vi.
Document reference
Assembly Instructions, schedule drawing No. AN-03177, Rev. RF, Sheet 7
Assembly Instructions, schedule drawing No. AN-03177, Rev. RF, Sheet 7
Assembly Instructions, schedule drawing No. AN-08358, Rev. RG, Sheet 6
All connections to the terminals that are used in the Type ‘X’ Wellhead Outlet shall be made between 10°C to +80°C due to brittleness of the terminals.
Conditions of Manufacture
i.
The products covered by this certificate incorporate previously certified devices, it is therefore
the responsibility of the manufacturer to continually monitor the status of the certification associated with
these devices, and the manufacturer shall inform Sira of any modifications of the devices that may
impinge upon the explosion safety design of their products. They shall also provide the end user with the
appropriate certification documents.
ii.
The manufacturer shall supply the Type ‘X’ WHO units that are marked with a T3 Temperature
Classification and Ta -40°C to +160°C with a Peppers Cable Glands Type A3LF fitted with a silicone
(white) seal, approved by IECEx SIR 07.0096X (IECEx version) and coded Ex e II, no other types are
allowed.
iii.
The manufacturer shall take all reasonable steps to ensure that the user/installer complies with the special
conditions for safe use associated with these products; in addition, the manufacturer shall provide the
user/installer with an appropriate copy of the certificate for any certified device that is fitted in their
devices; which includes: “cables shall be effectively clamped to prevent pulling or twisting”.
Date:
10 May 2011
Form 9530 Issue 1
Page 2 of 2
Sira Certification Service
Rake Lane, Eccleston, Chester, CH4 9JN, England
Tel:
Fax:
Email:
Web:
+44 (0) 1244 670900
+44 (0) 1244 681330
info@siracertification.com
www.siracertification.com