GB 17896-2022Minimum allowable values of energy efficiency and energy efficiency grades of ballasts for gas discharge lamps for general lighting (English PDF)

3.1 Ballast efficiency; eta-b

The ratio of the ballast output power (lamp power) to the total input power of the ballast-lamp circuit.

NOTE: Sensors, network connections or other auxiliary loads are disconnected. If they cannot be disconnected, the power of these loads shall be deducted from the result.

3.2 Minimum allowable value of energy efficiency for ballast

The minimum allowable value of ballast efficiency under the test conditions specified in the standard.

3.3 Standby power

Average power consumption of the ballast in standby mode.

NOTE 1: Standby mode is a mode of the ballast where the ballast is connected to the supply voltage and the lighting function is off but can be turned on by an external trigger signal instead of a network trigger signal.

NOTE 2: External trigger signal such as a sensor or timer.

4.1 Energy efficiency grades

4.1.1 Ballast energy efficiency grades are divided into 3 grades, among which Grade-1 has the highest energy efficiency.

4.1.2 The efficiency of electronic ballasts for tubular fluorescent lamps of various grades shall be no lower than the requirements of Table 1; and the efficiency of inductive ballasts for tubular fluorescent lamps of various grades shall be no lower than the requirements of Table 2.

A.3.2 Power supply voltage

A.3.2.1 Test voltage

When the used power supply voltage range is marked on the ballast, or when the ballast has several different independent rated power supply voltages, the voltage within the power supply voltage range of the ballast or any predetermined voltage can be used as the rated voltage for testing, whichever is the most unfavorable.

A.3.2.2 Power supply stability

During the test, the power supply voltage and frequency in the preheating stage shall be stably maintained within ±0.5% of the rated voltage value; during the actual measurement period, the voltage shall be maintained within ±0.2% of the rated voltage value.

A.3.2.3 Test power supply voltage waveform

The total harmonic content of the test power supply voltage shall not exceed 3%; the harmonic content is defined as the root mean square (RMS) sum of each component with the fundamental frequency as 100%.

A.3.3 Magnetic effect

There shall be no magnetic objects within 25 mm of the surface of the ballast under test, unless otherwise specified.

A.3.4 Requirements for reference lamps

A.3.4.1 Before measurement, the lamp shall be brought into a stable operating state. Discharge instability such as arc swirl or jitter shall not occur.

A.3.4.2 When a lamp that has been aged for at least 100 h is operated with a reference ballast under the conditions specified in this appendix and at an ambient temperature of 25°C (or 35°C as claimed by the manufacturer), if the lamp power, lamp terminal voltage or lamp operating current does not differ by more than 2.5% from the corresponding rated values given in GB/T 34841, then the lamp shall meet the requirements of the reference lamp.

A.3.5 Installation of reference lamp

In order to ensure the consistency of the electrical characteristics of the reference lamp, the orientation of the reference lamp shall comply with the provisions of the parameter table of the corresponding lamp. If the parameter table of the lamp does not specify its orientation, the lamp shall be installed horizontally.

During the test, the lamp should be permanently fixed in its test lamp holder. […]

A.3.6 Connecting wires and relative installation position