Abstract： IEC 60901:2000 pdf free download.single-capped fluorescent lamps -Performance specifications. When the ballast, at its rated voltage, is associated with a test lamp, the lamp shall dissipate a power which does not differ from its rated valu...

IEC 60901:2000 pdf free download.single-capped fluorescent lamps -Performance specifications.

When the ballast, at its rated voltage, is associated with a test lamp, the lamp shall dissipate a power which does not differ from its rated value by more than 4 %. A test lamp is a lamp whose voltage at lamp terminals does not deviate by more than 2 % from its rated value, when operated with its reference ballast.

NOTES

1 In some cases the ballast may include an autotransformer to increase (or reduce) the voltage to the proper value for the starting and operation of the lamp. Ballasts incorporating step-up transformers are particularly likely to be used In countries where 120 V or 100 V power systems predomlnate

2 The earthing of the circuit as shown in figure A,3 may make it necessary to supply it through an isolating transformer.

A.3.3 Starting aid

The starting aid, a metal plate, shall be connected to earth potential. Its dimensions shall be not less than the dimensions

specified for the maximum lamp outlines of the relevant lamp. The distance between the surface of the lamp and the starting aid

shall be as specified on the relevant lamp data sheet.

The manufacturer or responsible vendor shall specify whether or not the lamps require an external starting aid. For lamps not

requiring a separate starting aid, the metal plate shall be removed.

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