GB/T 24825-2022DC or AC supplied electronic controlgear for LED modules - Performance specifications (English PDF)

3.1 Total circuit power

The total power consumed by the control gear and the LED module together at the rated supply voltage of the control gear and the rated maximum output load.

3.2 Circuit power factor

The ratio of the measured power of the circuit to the product of the supply voltage (rms)

and the supply current (rms).

3.3 Controlgear for LED module circuitry with high input capacitance

Control gear suitable for high capacitance LED modules connected directly or indirectly to the input terminals.

Note 1: Examples are LED modules with switch-mode power conversion circuit, such as boost-buck converter.

Note 2: Normally, capacitance over 100 nF are considered high capacitance.

3.4 Controlgear for LED module circuitry with low input capacitance

Control gear suitable for low capacitance or no capacitance LED modules connected directly or indirectly to the input terminals.

Note 1: Examples are LED modules with only LEDs or with logic circuits for thermal protection, but not directly modifying the power provided by the control gear, or linear voltage regulators.

Note 2: Normally, capacitance of 100 nF and below are considered low capacitance.

4.1 The tests specified in this document are all type tests. The requirements and

tolerances stated in this document are based on tests performed on type test samples submitted by the manufacturer for this purpose. Such type test samples shall generally have the typical characteristics of the manufacturer’s product and shall be as close as possible to the center point value of the product.

According to the output voltage, it is divided into:

a) control gear with a stable output voltage;

b) control gear without a stable output voltage.

5.3 Classification according to output current

According to the output current, it is divided into:

a) control gear with a stable output current;

b) control gear without a stable output current.

5.4 Classification according to output isolation

According to the output isolation, it is divided into:

a) isolated output control gear;

b) self-coupling control gear (i.e., non-isolated output control gear).

6.1 Mandatory marking

6.1.1 The control gear shall be clearly marked with the following:

Circuit power factor, for example: lambda = 0.9.

For control gear where the power factor is not constant over the rated output range and/or has a supply voltage range, the power factor may vary for different combinations of supply voltage and output power. In this case, the range of power factor, for example lambda = 0.8 ~ 0.9, shall be indicated on the control gear.

If the power factor is less than 0.95 leading, the letter C shall be added after it, for example lambda = 0.9C.

6.1.2 In addition to the above mandatory markings, the following information shall also

be marked on the control device or indicated in the manufacturer’s catalog or similar documents:

a) the allowable temperature range, if applicable;

b) an indication that the control gear has a stable output voltage, if applicable;

c) an indication that the control gear has a stable output current, if applicable;

d) an indication that the control gear is suitable for use with the mains dimmer, if applicable;

e) a statement of the mode of operation, e.g., phase control, if applicable;

f) Prated_min, the rated minimum output power of the control gear for normal operation, if applicable.

Note: Prated_min can be a marking with Prated, e.g., Prated = 20 W,..., 60 W.

6.2 Optional marking

The following shall be declared in the control gear or the manufacturer’s catalog or the like:

a) total circuit power;

b) if applicable, a statement of the short-circuit protection of the control gear (symbol under consideration).

7.1 Starting and connecting requirements

After starting or connecting to an LED module, the output shall be within 110% of the rated value within 2 s. The maximum current or maximum voltage shall not exceed the manufacturer’s given value. This performance is tested at minimum rated power.

Note: If the output voltage is AC, 110% is the percentage of effective value, if it is DC, 110% is the percentage of DC value.

7.2 Voltage and current during operation

For a control gear with an unsteady output voltage, under the rated power supply voltage, the deviation between the output voltage and the rated voltage of the LED module shall not exceed +/-10%; for a control gear with a stable output voltage, when the power supply voltage is any value between 92% and 106% of the rated power supply voltage, the deviation between the output voltage and the rated voltage of the LED module shall not exceed +/-10%.

For a control gear with an unsteady output current, under the rated power supply voltage, the deviation between the output current and the rated current of the LED module shall not exceed +/-10%; for a control gear with a stable output current, when the power supply voltage is any value between 92% and 106% of the rated power supply voltage, the deviation between the output current and the rated current of the LED module shall not exceed +/-10%.

For control gear with supply voltage ranges, the test shall be performed with the combination of supply voltage ranges and output power ranges that provide the lowest and highest power factor (e.g., minimum supply voltage, maximum rated output power and maximum supply voltage, minimum rated output power). The measured power factors shall not be less than the lowest and highest marked values by more than 0.05, respectively.

10 Supply current When the control gear and the rated power LED module work at the rated voltage, the deviation of the power supply current from the value marked on the control gear or declared by the manufacturer’s product catalog shall not exceed 10%.

11 Operational tests for abnormal conditions The control gear shall not be damaged under the following conditions.

a) Test without LED module installed Supply the control gear with the rated voltage for 1 h without the LED module installed; at the end of the test, connect the LED module, and the LED module shall be able to work normally.

b) Test for reduced LED module resistance Still under study.

c) Tests for short-circuit resistant control gears Short-circuit the control gear for 1 h.

The above 1 h test shall also be completed when the thermal protection device operates.

After the test is completed and the protective device is reset, the control gear shall be able to work normally.

12 Durability

12.1 The control gear shall be subjected to the following temperature cycling shock test and supply voltage switching test.

a) Temperature cycling shock test First place the unpowered control gear at a temperature of -10 °C, or if the control gear is marked with a lower temperature value, at that value, for 1 h. Then, move