Note regarding effective date: After October 14, 2020 and prior to March 15, 2021 any representations with respect to energy use or efficiency of fluorescent lamp ballasts must be in accordance with the results of testing pursuant to this appendix or the test procedures as they appeared in appendix Q to this subpart revised as of January 1, 2020. On or after March 15, 2021, any representations, including certifications of compliance for ballasts subject to any energy conservation standard, made with respect to the energy use or efficiency of fluorescent lamp ballasts must be made in accordance with the results of testing pursuant to this appendix.

0. Incorporation by Reference

DOE incorporated by reference ANSI C78.81-2016, ANSI C78.375A, ANSI C78.901-2016, ANSI C82.1, ANSI 82.2, ANSI 82.3, ANSI 82.11, ANSI C82.13, ANSI 82.77, IEC 60081, and IEC 62301, each in their entirety in § 430.3; however, only enumerated provisions of ANSI C78.375A, ANSI C82.2, and IEC 62301 are applicable to this appendix, as follows:

(a) ANSI C78.375A, as follows:

(i) Section 4, Ambient conditions for temperature measurement, as specified in section 2.4.2 of this appendix; and

(ii) Section 9, Electrical instruments, as specified in sections 2.2.1, 2.2.2, and 2.2.3 of this appendix.

(b) ANSI C82.2, as follows:

(i) Section 3, Pertinent measurements, as specified in section 2.4.1 of this appendix;

(ii) Section 4, Electrical supply characteristics—test ballast measurement circuits, as specified in section 2.4.1 of this appendix; and

(iii) Section 7, Test measurements circuits, as specified in sections 2.5.6, 2.5.7, and 2.5.8 of this appendix.

(c) IEC 62301 as follows:

(i) Section 5, Measurements, as specified in sections 3.4.3 and 3.4.4 of this appendix.

1. Definitions

1.1. Average total lamp arc power means the sample mean of the total lamp arc power of the ballast units tested.

1.2. Dimming ballast means a ballast that is designed and marketed to vary its output and that can achieve an output less than or equal to 50 percent of its maximum electrical output.

1.3. High frequency ballast is as defined in ANSI C82.13 (incorporated by reference; see § 430.3).

1.4. Instant-start is the starting method used in instant-start systems as defined in ANSI C82.13, as typically indicated on publicly available documents of a fluorescent lamp ballast (e.g., product literature, catalogs, and packaging labels).

1.5. Low-frequency ballast is a fluorescent lamp ballast that operates at a supply frequency of 50 to 60 Hz and operates the lamp at the same frequency as the supply.

1.6. Programmed-start is the starting method used in a programmed-start system as defined in ANSI C82.13, as typically indicated on publicly available documents of a fluorescent lamp ballast (e.g., product literature, catalogs, and packaging labels).

1.7. Rapid-start is the starting method used in rapid-start type systems as defined in ANSI C82.13, as typically indicated on publicly available documents of a fluorescent lamp ballast (e.g., product literature, catalogs, and packaging labels).

1.8. Reference lamp is a fluorescent lamp that meets the operating conditions of a reference lamp as defined by ANSI C82.13.

1.9. Residential ballast means a fluorescent lamp ballast that meets Federal Communications Commission (FCC) consumer limits as set forth in 47 CFR part 18 and is designed and marketed for use only in residential applications.

1.10. RMS is the root mean square of a varying quantity.

1.11 Sign Ballast means a ballast that has an Underwriters Laboratories Inc. Type 2 rating and is designed and marketed for use only in outdoor signs.

2. Active Mode Procedure for Measuring BLE at Full Light Output

2.1. Where ANSI C82.2 (incorporated by reference; see § 430.3) references ANSI C82.1, use ANSI C82.1 (incorporated by reference; see § 430.3) for testing low-frequency ballasts and use ANSI C82.11 (incorporated by reference; see § 430.3) for testing high-frequency ballasts. In addition when applying ANSI C82.2, use the standards ANSI C78.375A, ANSI C78.81-2016, ANSI C82.1, ANSI C82.11, ANSI C82.13, ANSI C82.3, ANSI C82.77, and ANSI C78.901-2016 (incorporated by reference; see § 430.3) instead of the normative references in ANSI 82.2. Specifications in referenced standards that are recommended, that “shall” or “should” be met, or that are not clearly mandatory, are mandatory. In cases where there is a conflict between any industry standard(s) and this appendix, the language of the test procedure in this appendix takes precedence over the industry standard(s).

2.2. Instruments

2.2.1. All instruments must meet the specifications of section 9 of ANSI C78.375A.

2.2.2. Power Analyzer. In addition to the specifications in section 9 of ANSI C78.375A, the power analyzer must have a maximum 100 pF capacitance to ground and frequency response between 40 Hz and 1 MHz.

2.2.3. Current Probe. In addition to the specifications in section 9 of ANSI C78.375A, the current probe must be galvanically isolated and have frequency response between 40 Hz and 20 MHz.

2.3. Test Setup

2.3.1. Connect the ballast to a main power source and to the fluorescent lamp(s) as specified in this section. Ensure the ballast is connected to fluorescent lamp(s) according to any manufacturer's wiring instructions on or sold with each unit (including those provided online). To test a low-frequency ballast, follow ANSI C82.1 but disregard section 5.3 of ANSI C82.1. To test a high-frequency ballast, follow ANSI C82.11 but disregard sections 5.3.1 and 5.13 and Annex D of ANSI C82.11.

2.3.2. In the test setup, all wires used in the apparatus, including any wires from the ballast to the lamps and from the lamps to the measuring devices, must meet the following specifications:

2.3.2.1. Use the wires provided by the ballast manufacturer and only the minimum wire length necessary to reach both ends of each lamp. If the wire lengths supplied with the ballast are too short to reach both ends of each lamp, add the minimum additional wire length necessary to reach both ends of each lamp, using wire of the same wire gauge(s) as the wire supplied with the ballast. If no wiring is provided with the ballast, use 18 gauge or thicker wire.

2.3.2.2. Keep wires loose. Do not shorten or allow bundling of any wires. Separate all wires from each other, and ground them to prevent parasitic capacitance.

2.3.3. Test each ballast with only one fluorescent lamp type. Select the one type of fluorescent lamp for testing as follows:

2.3.3.1. Each fluorescent lamp must meet the specifications of a reference lamp as defined by ANSI C82.13, be seasoned at least 12 hours, and be stabilized as specified in 2.5.2.1 of this appendix. Test each reference lamp with a reference ballast that meets the criteria of ANSI C82.3. For low frequency ballasts that operate:

(a) 32 W 4-foot medium bipin T8 lamps, use the following reference lamp specifications: 30.8 W, arc wattage; 1.7 W, approximate cathode wattage (with 3.6 V on each cathode); 32.5 W, total wattage; 137 V, voltage; 0.265 A, current. Test the selected reference lamp with the following reference ballast specifications: 300 V, rated input voltage; 0.265 A, reference current; 910 ohms, impedance. Use the following cathode heat requirements for rapid start: 3.6 V nominal, voltage; 2.5 V min, 4.4 V max, limits during operation; 11.0 ohms ± 0.1 ohms, dummy load resistor; 3.4 V min, 4.5 V max, voltage across dummy load.

(b) 59 W 8-foot single pin T8 lamps, use the following reference lamp specifications: 60.1 W, arc wattage; 270.3 V, voltage; 0.262 A, current. Test the selected reference lamp with the following reference ballast specifications: 625 V, rated input voltage; 0.260 A, reference current; 1960 ohms, impedance.

(c) 32 W 2-foot U-shaped medium bipin T8 lamps, use the following reference lamp specifications: 30.5 W, arc wattage; 1.7 W, approximate cathode wattage (with 3.6 V on each cathode); 32.2 W, total wattage; 137 V, voltage; 0.265 A, current. Test the selected reference lamp with the following reference ballast specifications: 300 V, rated input voltage; 0.265 A, reference current; 910 ohms, impedance. Use the following cathode heat requirements for rapid start: 3.6 V nominal, voltage; 2.5 V min, 4.4 V max, limits during operation; 11.0 ohms ± 0.1 ohms, dummy load resistor; 3.4 V min, 4.5 V max, voltage across dummy load.

2.3.3.2 For any sign ballast designed and marketed to operate both T8 and T12 lamps, use a T12 lamp as specified in Table 1 of this appendix.

2.3.3.3. For any ballast designed and marketed to operate lamps of multiple base types, select lamp(s) of one base type, in the following order of decreasing preference: Medium bipin, miniature bipin, single pin, or recessed double contact.

2.3.3.4. After selecting the base type (per section 2.3.3.3), select the diameter of the reference lamp. Any ballast designed and marketed to operate lamps of multiple diameters, except for any sign ballast capable of operating both T8 and T12 lamps, must be tested with lamps of one of those diameters, selected in the following order of decreasing preference: T8, T5, or T12.

2.3.3.5. Connect the ballast to the maximum number of lamps (lamp type as determined by 2.3.3.2, 2.3.3.3, and 2.3.3.4 of this section) the ballast is designed and marketed to operate simultaneously.

For any ballast designed and marketed to operate both 4-foot medium bipin lamps and 2-foot U-shaped lamps, test with the maximum number of 4-foot medium bipin lamp(s).

2.3.3.6. Test each ballast with the lamp type specified in Table A of this section that corresponds to the lamp diameter and base type the ballast is designed and marketed to operate.

2.3.4. Test Circuits

2.3.4.1. The power analyzer test setup must have exactly n + 1 channels, where n is the maximum number of lamps (lamp type as determined by sections 2.3.3.2, 2.3.3.3, and 2.3.3.4 of this appendix) a ballast is designed and marketed to operate. Use the minimum number of power analyzers possible during testing. Synchronize all power analyzers. A system may be used to synchronize the power analyzers.

2.3.4.2. Lamp Arc Voltage. Attach leads from the power analyzer to each fluorescent lamp according to Figure 1 of this section for rapid- and programmed-start ballasts; Figure 2 of this section for instant-start ballasts operating single pin (SP) lamps; and Figure 3 of this section for instant-start ballasts operating medium bipin (MBP), miniature bipin (mini-BP), or recessed double contact (RDC) lamps. The programmed- and rapid-start ballast test setup includes two 1000 ohm resistors placed in parallel with the lamp pins to create a midpoint from which to measure lamp arc voltage.

2.3.4.3. Lamp Arc Current. Position a current probe on each fluorescent lamp according to Figure 1 of this section for rapid- and programmed-start ballasts; Figure 2 of this section for instant-start ballasts operating SP lamps; and Figure 3 of this section for instant-start ballasts operating MBP, mini-BP, and RDC lamps.

For the lamp arc current measurement, set the full transducer ratio in the power analyzer to match the current probe to the power analyzer.

Where: Iin is the current through the current transducer, Vout is the voltage out of the transducer, Rin is the power analyzer impedance, and Rs is the current probe output impedance. 2.4. Test Conditions

2.4.1. Establish and maintain test conditions for testing fluorescent lamp ballasts in accordance with sections 3 and 4 of ANSI C82.2.

2.4.2. Room Temperature and Air Circulation. Maintain the test area at 25 ±1 °C, with minimal air movement as defined in section 4 of ANSI C78.375A.

2.4.3. Input Voltage. For any ballast designed and marketed for operation at only one input voltage, test at that specified voltage. For any ballast that is neither a residential ballast nor a sign ballast but is designed and marketed for operation at multiple voltages, test the ballast at 277 V ±0.1%. For any residential ballast or sign ballast designed and marketed for operation at multiple voltages, test the ballast at 120 V ±0.1%.

2.5. Test Method

2.5.1. Connect the ballast to the selected fluorescent lamps (as determined in section 2.3.3 of this appendix) and to measurement instrumentation as specified in the Test Setup in section 2.3 of this appendix.

2.5.2. Determine stable operating conditions according to Option 1 or Option 2.

2.5.2.1. Option 1. Operate the ballast for at least 15 minutes before determining stable operating conditions. Determine stable operating conditions by measuring lamp arc voltage, current, and power once per minute in accordance with the setup described in section 2.3 of this appendix. The system is stable once the difference between the maximum and minimum for each value of lamp arc voltage, current, and power divided by the average value of the measurements do not exceed one percent over a four minute moving window. Once stable operating conditions are reached, measure each of the parameters described in sections 2.5.3 through 2.5.9 of this appendix.

2.5.2.2 Option 2. Determine stable operating conditions for lamp arc voltage, current, and power according to steps 1 through 6 of section D.2.1 in Annex D of ANSI C82.11.

2.5.3. Lamp Arc Voltage. Measure lamp arc voltage in volts (RMS) using the setup in section 2.3.4.2.

2.5.4. Lamp Arc Current. Measure lamp arc current in amps (RMS) using the setup in section 2.3.4.3 of this appendix.

2.5.5. Lamp Arc Power. The power analyzer must calculate output power by using the measurements from sections 2.5.3 and 2.5.4 of this appendix.

2.5.6. Input Power. Measure the input power in watts to the ballast in accordance with section 7 of ANSI C82.2 (disregard references to Figure 1 and Figure 3).

2.5.7. Input Voltage. Measure the input voltage in volts (RMS) to the ballast in accordance with section 7 of ANSI C82.2 (disregard references to Figure 1 and Figure 3).

2.5.8. Input Current. Measure the input current in amps (RMS) to the ballast in accordance with section 7 of ANSI C82.2 (disregard references to Figure 1 and Figure 3).

2.5.9. Lamp Operating Frequency. Measure the frequency of the waveform delivered from the ballast to any lamp used in the test in accordance with the setup in section 2.3 of this appendix.

2.6. Calculations

2.6.1. Calculate ballast luminous efficiency (BLE) as follows (do not round values of total lamp arc power and input power prior to calculation):

Where: Total Lamp Arc Power is the sum of the lamp arc powers for all lamps operated by the ballast as measured in section 2.5.5 of this appendix, Input Power is as determined by section 2.5.6 of this appendix, and β is equal to the frequency adjustment factor in Table 1 of this appendix.

2.6.2. Calculate Power Factor (PF) as follows (do not round values of input power, input voltage, and input current prior to calculation):

Where: Input Power is measured in accordance with section 2.5.6 of this appendix, Input Voltage is measured in accordance with section 2.5.7 of this appendix, and Input Current is measured in accordance with section 2.5.8 of this appendix. 3. Standby Mode Procedure

3.1. The measurement of standby mode power is required to be performed only if a manufacturer makes any representations with respect to the standby mode power use of the fluorescent lamp ballast. When there is a conflict, the language of the test procedure in this appendix takes precedence over IEC 62301 (incorporated by reference; see § 430.3). Specifications in referenced standards that are not clearly mandatory are mandatory. Manufacturer's instructions, such as “instructions for use” referenced in IEC 62301 mean the manufacturer's instructions that come packaged with or appear on the unit, including on a label. It may include an online manual if specifically referenced (e.g., by date or version number) either on a label or in the packaged instructions. Instructions that appear on the unit take precedence over instructions available electronically, such as through the internet.

3.2. Test Setup

3.2.1. Take all measurements with instruments as specified in section 2.2 of this appendix. Fluorescent lamp ballasts that are designed and marketed for connection to control devices must be tested with all commercially available compatible control devices connected in all possible configurations. For each configuration, a separate measurement of standby power must be made in accordance with section 3.4 of this appendix.

3.2.2. Connect each ballast to the maximum number of lamp(s) as specified in section 2.3 (specifications in 2.3.3.1 are optional) of this appendix. Note: ballast operation with reference lamp(s) is not required.

3.3. Test Conditions

3.3.1. Establish and maintain test conditions in accordance with section 2.4 of this appendix.

3.4. Test Method and Measurements

3.4.1. Turn on all of the lamps at full light output.

3.4.2. Send a signal to the ballast instructing it to have zero light output using the appropriate ballast communication protocol or system for the ballast being tested.

3.4.3. Stabilize the ballast prior to measurement using one of the methods as specified in section 5 of IEC 62301.

3.4.4. Measure the standby mode energy consumption in watts using one of the methods as specified in section 5 of IEC 62301.

[85 FR 56494, Sept. 14, 2020]