EN 60968-2015 pdf download.Self-ballasted fluorescent lamps for general lighting services Safety requirements.
After 1 h the ball is removed from the specimen, which is then immersed for 10 s in cold water for cooling down to approximately room temperature. The diameter of the impression is measured, and shall not exceed 2 mm.
In the event of curved surfaces the shorter axis is measured if the indent is elliptical.
In case of doubt, the_depth of the impression is measured and the diameter calculated using the formula q = 24 (5 – p), in which p = depth of impression.
The test is not made on parts of ceramic material.
12 Resistance to flame and ignition
Parts of insulating material retaining live parts in position and external parts of insulating material providing protection against electric shock are subjected to the glow-wire test in accordance with IEC 60695-2-10 and IEC 60695-2-11 subject to the following details.
— The test specimen is a complete lamp. It may be necessary to take away parts of the lamp to perform the test, but care is taken to ensure that the test conditions are not significantly different from those occurring in normal use.
— The test specimen is mounted on the carriage and pressed against the glow-wire tip with a force of I N. preferably 15 mm. or more, from the upper edge, into the centre of the surface to be tested. The penetration of the glow-wire into the specimen is mechanically limited to 7 mm.
If it is not possible to make the test on a specimen as described above because the specimen is too small, the above test is made on a separate specimen of the same material, 30 mm square and with a thickness equal to the smallest thickness of the specimen.
– The temperature of the tip of the glow-wire is 650 °C. After 30 s the specimen is withdrawn from contact with the glow-wire tip.
The glow-wire temperature and heating current are constant for 1 mEn prior to commencing the test. Care is taken to ensure that heat radiation does not influence the specimen during this period. The glow-wire tip temperature is measured by means of a sheathed fine-wire thermocouple constructed and calibrated as described in IEC 60695-2-10.
— Any flame or glowing of the specimen shall extinguish within 30 s of withdrawing the glow- wire, and any flaming drop shall not ignite a piece of the tissue paper, spread out horizontally 200 mm ± 5 mm below the specimen. The tissue paper is specified in 4.187 of Iso 4046-4:2002.
— The test is not made on parts of ceramic material.
The lamps shall not impair safety when operated under fault conditions which may occur during the intended use.
13.2 Test conditions
Each of the following fault conditions is applied in turn, as well as any other associated fault conditions that may arise from it as logical consequences. Only one component at a time is subjected to a fault condition.
a) In a switch-start circuit, the starter is short-circuited.
b) The lamp does not start, because one of the electrodes is broken.
c) The lamp does not start, although the electrode circuits are intact (de-activated lamp).
d) The lamp operates, but one of the electrodes is dc-activated or broken (rectifying effect).
a) Opening or bridging other points in the circuit where the diagram or construction indicates that such a fault condition may impair safety.
Examination of the lamp and its circuit diagram will generally show the fault conditions which should be applied. These are applied in sequence in the order that is most convenient.
Components or devices in which a short-circuit does not occur shall not be bridged. Similarly, components or devices in which an open circuit cannot occur shall not be interrupted.
Manufacturers or responsible vendors shall produce evidence that the components behave in a way that does not impair safety, for instance, by showing compliance with the relevant specification.
Compliance is checked by operating the sample free burning, vertical cap up position at room temperature and at the most critical test voltage between 90 % and 110 % of the rated voltage.
In case a rated voltage range is declared, the test has to be carried out at the most critical test voltage between 90 % and 110 % of the mean voltage of that declared range or at the most critical test voltage within the declared voltage range, whatever range is greater.
In case of alternative rated voltages the test shall be performed separately for each rated voltages.
Example 1:
Declared voltage range: 220 V to 240 V: — Test voltage within 207 V to 253 V. (90 % to 110 % of 230 V is wider than declared range).EN 60968-2015 pdf download.
EN 60968-2015 pdf download
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