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IECEx Certificate
of Conformity
 
INTERNATIONAL ELECTROTECHNICAL COMMISSION
IEC Certification Scheme for Explosive Atmospheres
for rules and details of the IECEx Scheme visit www.iecex.com
 
Certificate No.:
IECEx SIR 10.0038 issue No.:3
 
Status:
Current
 
Date of Issue:2012-03-08 Page 1 of 4


    
Applicant:
Ascom AB
Grimbodalen 2
Goteborg
SE-402 76
Sweden


 
Electrical Apparatus:DH5-xBxxxx DECT handset
Optional accessory:


 
Type of Protection:Intrinsically Safe and Dust


 
Marking: Ex ib IIC T4 Gb
Ex ib IIIC T55°C Db IP65
(Ta = -10°C to +40°C)
IEC 60079-0:2007 Ed 5 (used for guidance in respect of marking)
 
Approved for issue on behalf of the IECEx
Certification Body:		C Ellaby

 
Position:Deputy Certification Manager


 
Signature:
(for printed version)
 
Date:
 
 
1. This certificate and schedule may only be reproduced in full.
2. This certificate is not transferable and remains the property of the issuing body.
3. The Status and authenticity of this certificate may be verified by visiting the Official IECEx Website.
 
 Certificate issued by:
SIRA Certification Service
Rake Lane
Eccleston
Chester
CH4 9JN
United Kingdom


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IECEx Certificate
of Conformity
 
Certificate No.:IECEx SIR 10.0038
 
Date of Issue:2012-03-08Issue No.: 3
 
Page 2 of 4
 
 Manufacturer:
Ascom AB
Grimbodalen 2
Goteborg
SE-402 76
Sweden


 
 Additional Manufacturing location(s):
 

This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed and found to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.


STANDARDS:
The electrical apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was found to comply with the following standards:

 
IEC 60079-0 : 2004
Edition: 4.0		Electrical apparatus for explosive gas atmospheres - Part 0: General requirements
IEC 60079-11 : 2006
Edition: 5		Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
IEC 61241-11 : 2005
Edition: 1		Electrical apparatus for use in the presence of combustible dusts - Part 11: Protection by intrinsic safety 'iD'
 
This Certificate does not indicate compliance with electrical safety and performance requirements other than those expressly included in the Standards listed above.


 
TEST & ASSESSMENT REPORTS:A sample(s) of the equipment listed has successfully met the examination and test requirements as recorded in

 
Test Report:
GB/SIR/ExTR10.0238/00GB/SIR/ExTR10.0293/00GB/SIR/ExTR11.0119/00GB/SIR/ExTR12.0051/00


Quality Assessment Report:

NO/NEM/QAR07.0004/02NO/NEM/QAR07.0004/03


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IECEx Certificate
of Conformity
 
Certificate No.:IECEx SIR 10.0038
 
Date of Issue:2012-03-08Issue No.: 3
 
Page 3 of 4
 
 
Schedule
 
EQUIPMENT:
Equipment and systems covered by this certificate are as follows:
 

The DH5-xBxxxx DECT Handset, which is sold under a number of brand names, is a battery-powered, hand-held, wireless device that communicates with a base station.  The frequencies used depend on the country of intended use.

The DH5-xBxxxx comprises a single printed circuit board with a liquid crystal display mounted on it, housed in a PC/ABS enclosure with a polycarbonate window.  The device is powered from a single lithium-ion cell, part number 660274, which may be recharged only when the unit is located in the non-hazardous area.  During the charging operation, communication also occurs with a base station.  The maximum charging voltage (Um) is 5.25 V and the maximum charging current (Im) is 1.15 A and only the following chargers approved by Ascom may be used:
*  DC3-xxxB/1A (or greater)*  DC4-xxxB/3A (or greater)*  CR3-xxxB/2A (or greater)
Removal of the battery pack can only be undertaken when the device is in the non-hazardous area.
There is an output to a suitably-certified headset; the safety description at this connector is:
Uo = 4.2 V
Io = 0.169 A
Po = 0.629 W
Co = 2.2 mF
Lo = 2.2 mH
 
CONDITIONS OF CERTIFICATION: NO
 
 


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IECEx Certificate
of Conformity
 
Certificate No.:IECEx SIR 10.0038
 
Date of Issue:2012-03-08Issue No.: 3
 
Page 4 of 4
 
 
DETAILS OF CERTIFICATE CHANGES (for issues 1 and above):
 
Issue 1 – this Issue introduced the following changes:
1An increase in the output current of the current-limiting circuits from 155 mA to 169 mA, with a resulting change to the safety description at the headset connector.
2Minor modification to a marking drawing to allow a more generic numbering system was approved.
Issue 2 – this Issue introduced the following changes:
1The main circuit was modified, this involved changing component values, the removal/addition of components and the introduction of additional capacitance; these modifications also included changing the main board artwork.
2Minor editorial drawings changes were recognised.
Issue 3 – this Issue introduced the following changes:
1Changes to four components that are not safety-critical were approved.
2Minor editorial changes to drawings reflecting the above changes and incorporating changes to the parts lists.
 
 








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