IEC 61347-2-6-2000 pdf free download – Lamp controlgear – Part 2-6: Particular requirements for d.c. supplied electronic ballasts for aircraft lighting.
1Scope
This part of lEC 61347 specifies particular safety requirements for d.c. supplied electronicballasts intended for operation from power sources likely to have attendant transients andsurges such as in aircraft.
Performance requirements are the subject of IEC 60925.
Normative references
For the purpose of this part of lEC 61347,the normative references given in clause 2 ofIEC 61347-1 which are mentioned in this standard apply, together with the following normativereferences.
IEC 61347-1,Lamp controlgear – Part 1: General and safety requirements
IEC 60925，D.C. supplied electronic ballasts for tubular fluorescent lamps – Performancerequirements
Definitions
For the purpose of this part of lEC 61347, the definitions of clause 3 of lEC 61347-1 apply.
4General requirements
The requirements of clause 4 of IEC 61347-1 apply.
5 General notes on tests
The requirements of clause 5 of IEC 61347-1 apply.
6 Classification
The requirements of clause 6 of IEC 61347-1 are not applicable.
7Marking
7.1 Mandatory marking
Ballasts shall be clearly and durably marked, in accordance with the requirements of 7.2 ofIEC61347-1,with the following mandatory markings:
– items a), b), e),f)， k) and l) of 7.1 of IEC 61347-1, together with- indication of type and current rating of the fuse, if applicable.7.2Information to be provided, if applicable
ln addition to the above mandatory markings，the following information，if applicable,shall begiven either on the ballast, or be made available in the manufacturer’s catalogue or similar:
items h), i). j) and n) of 7.1 of lEC 61347-1,together with
indication whether the ballast is proof against supply voltage polarity;design voltage;
– indication that the ballast is for aircraft use only.
8Protection against accidental contact with live partsThe requirements of clause 10 of lEC 61347-1 apply.
9Terminals
The requirements of clause 8 of lEC 61347-1 apply.
10 Provisions for earthing
The requirements of clause 9 of IEC 61347-1 apply.
11 Moisture resistance and insulation
The requirements of clause 11 of lEC 61347-1 apply, with the exception of the 7 M2 insulationresistance requirement for reinforced insulation.
12Electric strength
The requirements of clause 12 of IEC 61347-1 apply.
13 Thermal endurance test for windings
The requirements of clause 13 of lEC 61347-1 are not applicable.
14Pulse voltages
The ballast shall withstand without failure any pulses originating from the power source.
Compliance is checked by the following test,which is subdivided into two sections a) and b),both of which are applicable.
a) Long-duration pulse voltages which, in general, are not likely to be significantly attenuated by conventional inductor/capacitor input filters.
When operating at the maximum voltage of the rated voltage range，in association with theappropriate number of lamps and in an ambient temperature of 25 °C, the ballast shallwithstand,without failure, the number of pulse voltages specified in table 1 superimposed, withthe same polarity, on the supply voltage.
b) Short-duration pulse voltages which, in general, are likely to be attenuated by conventional inductorlcapacitor input filters.
When operating at the maximum voltage of the rated voltage range in association with theappropriate number of lamps and in an ambient temperature of 25 C, the ballast shallwithstand without failure the number of pulse voltages specified in table 2 superimposed withthe same polarity, on the supply voltage.
15 Abnormal conditions
The ballast shall not impair safety when operated under abnormal conditions at the maximum value of the rated voltage range.
Abnormal conditions are working conditions in which one or more of the following apply:
a) the lamp or one of the lamps is not inserted;
b) the lamp does not start because one of the cathodes is broken;
c) the lamp does not start although the cathode circuits are intact (deactivated lamp);
d) the lamp operates, but one of the cathodes is deactivated or broken (rectifying effect).
Compliance is checked by the following test.IEC 61347-2-6 pdf download.