Test Method and Measurements Clause Samples

Test Method and Measurements. 3.2.1. The LED lamp shall be seasoned for 1,000 hours prior to stabilizing the lamp and collecting photometric data. 3.2.2. The LED lamp shall be stabilized as described in section 5.0 of IES LM–79 (incorporated by reference; see § 430.3). The lamp reaches stabilization when the variation [(maximum—minimum)/minimum] of at least three readings of input power and lumen output over a period of 30 minutes, taken 15 minutes apart, is less than 0.5 percent. 3.2.3. The input power in ▇▇▇▇▇ shall be measured and recorded as specified in section 8.0 of IES LM–79 (incorporated by reference; see § 430.3). 3.2.4. The measurement of lumen output of the LED lamp shall conform to section 9.0 of IES LM–79 (incorporated by reference; see § 430.3). 3.2.5. CCT shall be determined according to the method specified in section 12.0 of IES LM–79 (incorporated by reference; see § 430.3).

Test Method and Measurements a. In-Situ Temperature Measurement Test DOE proposes that an ISTMT be performed to determine the case temperature at which the lumen maintenance data should be used to project the rated lifetime of the LED source. ▇▇▇ proposes that the test setup and conditions for the ISTMT be as specified in sections 8.5, 8.13, 8.14, 8.15, and 9 of UL 1993–2009. Section 9 of UL 1993–2009 specifies the test equipment, ambient temperature, relative humidity, instrumentation, test box material and construction, as well as the test setup for lamps that are intended to be operated in a wet environment. Section 8.5 of UL 1993– 2009 provides specifications for the temperature test of the LED lamp including the ambient temperature and the temperature of the components within the lamp. Section 8.5.8 further specifies that the in-situ temperature of the LED lamp should be recorded after the test has been running for at least three hours, and three successive readings taken at 15 minute intervals are within 1 °C of one another and are still not rising. Sections 8.13, 8.14, and 8.15 specify the test setup for lamps that are intended to be operated in a damp environment, wet environment, and cold environment, respectively. Further, DOE proposes that, as specified in Appendix D of the ENERGY STAR® Program Requirements for Integral LED Lamps, Eligibility Criteria—Version 1.432, the in-situ temperature should be measured at the temperature measurement point (TMP) that is defined by LED package, array, or module manufacturer on its product to act as surrogate points for measuring the junction temperature. To perform the ISTMT, a temporary thermocouple should be attached to the TMP of the highest temperature LED package, array, or module in the LED lamp, as specified by the LED source manufacturer. The temporary hole for inserting the thermocouple should be tightly resealed during testing with putty or other flexible sealant, as mentioned in the ENERGY STAR specification. Lastly, ▇▇▇ proposes that the guidance 32 ENERGY STAR® Program Requirements for Integral LED Lamps ▇▇▇.▇▇▇▇▇▇▇▇▇▇.▇▇▇/▇▇/▇▇▇▇▇▇▇▇/▇▇▇▇▇▇▇_▇▇▇▇▇/ program_reqs/ Integral_LED_Lamps_Program_Requirements.pdf. specified in the ENERGY STAR specification for attaching the thermocouple in the LED lamp be followed. DOE invites interested parties to comment on the appropriateness of adopting sections 8.5, 8.13, 8.14, 8.15, and 9 of UL 1993–2009 for performing the ISTMT to determine the LED source case temperature at which rated lif...