UL-1993:2012 pdf free download – STANDARD FOR SAFETY Self-Ballasted Lamps and Lamp Adapters.
3) Marked for installation in a specific luminaire only in accordance with Table 10.1. Item 26, shall be normal temperature tested in the specified luminaire in accordance with UL 1598 and CANCSA-C22,2 No. 2500 for the luminaire type.
8.5.4 The normal temperature test shall be conducted with the device energized In accordance with Clause 815.
8.5.5 A device that Is not marked In accordance with Table 10.1, Item 13, shall comply with the dimmer tests of Clause 812.
8.5.6 A device that is not designed for use in a totally enclosed luminaire, and that is marked in accordance with Table 10,1. Item 14, shall be subjected to the normal temperature test with the device mounted base-up in the test fixture as shown in Figure 9.1 and with the bottom open. The open bottom of the test fixture shall remain open for the temperature test, or the device shall be tested with a 3 mm (0.125 in) thick lens applied to the test fixture opening.
8.5.7 A lamp adapter that can accommodate various lamp types and watlages shall be tested with the lamp that will result In the most severe temperatures. More than one test will in some cases be required to determine this condition.
8.5.8 The test shall be continued until constant temperatures are obtained. A temperature is considered to be constant if:
a) The test has been running for at least 3 hours, and
b) Three successive readings, taken at 15 minute intervals, are within I °C of one another and are still not rising.
8.5.9 Thermocouples shall comply with Clause 9.3.
8.5.10 A thermocouple junction and the adjacent thermocouple lead wire shall be securely held in thermal contact with the surface of the material of which the temperature is being measured. In most cases, adequate thermal contact will result from securely cementing the thermocouple in place. If a metal surface is involved, brazing or soldering the thermocoupfe to the metal might be necessary.
8.5.11 The temperature of a winding shall be measured by a thermocouple or by the rise of resistance method in accordance with Clause 8.5.12.
8.5.12 The temperature of a winding shall be calculated by the following formula:
8.5.13 As it is generally necessary to de-energize the winding before measuring ft the value ol R at the end of the test may be determined by taking several resistance measurements at short intervals, beginning as quickly as possible alter the instant of shutdown. A curve of the resistance values versus time may be plotted and extrapolated to give the value of R at the end of me test.
8.6 DielectrIc voltage-withstand test
8.6.1 A device with accessible non-current-carrying metal parts that could be energized from within shall withstand for 1 minute, without breakdown, the application of a test potential of twice the rated voltage + 1000 V between all live parts and all accessible non-current-carrying metal parts.
8.6.2 A device with accessible nonmetallic parts and openings in the enclosure shall withstand for 1 minute. without breakdown, the application of a test potential of 2500 V between live parts and metal foil in contact with accessible nonmetallic parts. The test shall be performed while the device is hot from normal operation.
8.6.3 The dielectric voltage-withstand test shall be conducted using test equipment having a 500 VA or larger transformer, the output voltage of which can be varied. The applied potential shall be increased from zero until the required test value is reached, and shall be held at that value for 1 minute. The increase in the applied potential shall be at a substantially uniform rate and as rapidly as consistent with its value being correctly indicated by a voltmeter.