IEC 60901:2001 pdf download
IEC 60901:2001 pdf download.Single-capped fluorescent lamps -Performance specifications.
A.2.3 Starter
For lamps operated with an external starter, the type of glow starter to be used shall comply with the requirements of IEC 60155, and shall in any case be subject to agreement with the lamp manufacturer or responsible vendor.
A.2.4 Test voltage
The test voltage applied to the circuit shall be as specified on the relevant lamp data sheet.
A.3 Lamps having preheated cathodes for operation on a.c. mains frequencies starterless circuits
A.3.1 Test cIrcuit
Lamps shall be tested with a 50 Hz or 60 Hz supply in the circuit shown in figure A.3.
A12 Ballast
The ballast used shall comply with the requirements of IEC 60921, It shall be rated as specified on the relevant lamp data sheet.
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 who5e voltage at lamp terminals doe5 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 autoqransformer to increase (or reduce) the voltage to the proper value (or the starting and operation o( the amp. Ballasts incorporating step.up transFormers are particularly likely to be used In countries where 120 V or 100 V power systems predominate.
2 The earthlng ol the circuit as shown in hgure A 3 may make It necessary to supply it through an isolating transfon’n.r
&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,
A.3.4 Test voltages
The voltage of the heating circuit to be applied to the cathode terminals and the open circuit voltage at the lamp terminals for the starting test shall be as specified on the relevant lamp data sheet.
NOTE The soltages specified tar the starting test are chosen primarily to secure reproducibility at teat results, and are not necessarily applicable to the design of ballasts.
The voltages of the main circuit and of the heating circuits shall be applied simultaneously.
The voltage applied to the cathode heating circuits shall not be so connected as to increase the voltage of the main circuit. The two circuits shall be connected in the same phase.
The two cathode heating transformers may be replaced by one with isolated secondary windings. The ratings of the transformer(s) shall be such that the voltage does not change by more than 2 % when the maximum cathode load is connected
If the lamp does not start at the specified open circuit voltage, this voltage shall be gradually increased up to a maximum of 110 % of the test value. If the lamp still does not start, it shall be rejected. If the lamp does start, it shall be operated for halt an hour at rated voltage and the normal test shall be made again after a rest period of 24 h.
A.4 Lamps for operation on high frequency
Lamps shall be tested with an a.c supply with a frequency between 20 kHz and 26 kHz in the circuits shown in:
— figure A.4 for lamps with preheated cathodes;
— figure A.5 for lamps with non-preheated cathodes.
The non-inductive ballast resistor shall be so adjusted that the high-frequency lamp current is equal to the value as specified on the relevant lamp data sheet.
The open circuit voltage applied to the circuit shall be as specified on the relevant lamp data sheet.
A starting aid shall not be used, unless otherwise stated on the relevant lamp data sheet, or by the manufacturer or responsible vendor.
For lamps with preheated cathodes, the cathode heating supplies shall be adjusted to supply a preheat current as specified on the relevant lamp data sheet During the preheat time, specified on the relevant lamp data sheet, switch S1 shall be kept open and switches S2 closed, After this period of time, switches S2 shall be opened simultaneously as switch S1 is closed.
