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QC/T 501-2015Automotive signal flashers (English PDF)

汽车信号闪光器

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

October 10, 2015

Implementation date

March 1, 2016

Scope

QC/T 501-2015 is the English-translated version of 汽车信号闪光器.

QC/T 501-2015 covers the automotive signal flasher: requirements, test methods, inspection rules, marking, packaging and storage. Clause 1 applies it to Type-M and Type-N flashers, other motor vehicles may refer to it.

Clause 3 asks it to survive reverse power polarity and a 50 Hz 550 V sine wave test, each for 1 min, storage at -40 °C and 85 °C, working at -40 °C and 80 °C, damp-heat cycling and vibration, and still meet the basic performance clause.

Clause 4 feeds it from a DC supply with ripple no greater than 75 mV peak-to-peak at (14 ± 0.2) V or (28 ± 0.2) V, uses meters of class 0.5 or better at (23 ± 5) °C, and reads working frequency and electrified rate over ten cycles, quiescent current and voltage drop with 21 W main bulbs on the Line-3 or Line-5 circuit.

Issued by MIIT on 10 October 2015, it replaces QC/T 501-1999 and has applied since 1 March 2016.

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Document preview — QC/T 501-2015

National Standard of the People's Republic of China

Replacing: QC/T 501-1999

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword5
1 Scope6
2 Normative References6
3 Requirements7
4 Test Methods11
5 Inspection rules15
6 Mark, Package, and Storage17

Foreword

This Standard was drafted as per the rules specified in GB/T 1.1-2009 Directives for Standardization - Part 1. Structure and Drafting of Standards. This Standard is the modification against QC/T 501-1999.

Compared with QC/T 501-1999, this Standard has the major changes as follows.

--- Delete the starting time and impact requirements;

--- Add the quiescent current, over-voltage, salt spray, reverse voltage, electromagnetic compatibility, protection test and requirements;

--- Reduce the voltage drop of the flasher correspondingly;

--- Adjust the electrified rate parameter of the flasher;

--- Adjust the durability test time slightly according to several enterprises' standards; appropriately reduction of time can meet the actual working conditions;

--- In the aspect of test circuit diagram, considering the current state of existing products, give Line-3 and Line-5 product lines diagrams.

1 Scope

This Standard specifies the requirements, test methods, inspection rules and the like of automotive signal flasher.

This Standard is applicable to the Type-M and Type-N automotive signal flasher (hereinafter referred to as signal flasher). Other motor vehicles can be implemented by referring to this Standard.

2 Normative References

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document.

GB/T 18655 Vehicles, Boats and Internal Combustion Engines - Radio Disturbance Characteristics - Limits and Methods of Measurement for the Protection of on-Board Receivers

GB/T 21437.2 Road Vehicles - Electrical Disturbances from Conduction and Coupling - Part 2. Electrical Transient Conduction along Supply Lines only

GB/T 28046.2-2011 Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment - Part 2. Electrical Loads

GB/T 28046.3-2011 Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment - Part 3. Mechanical Loads

GB/T 28046.4-2011 Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment - Part 4. Climatic Loads

GB/T 30038-2013 Road Vehicles - Degrees of Protection (IP-Code) - Protection of Electrical Equipment against Foreign Objects, Water and Access

QC/T 413-2002 Basic Technical Requirements for Automotive Electric Equipment

ISO 11425 (All Parts) Road Vehicles - Component Test Methods for Electrical/Electronic Disturbances from Narrowband Radiated Electromagnetic Energy

3 Requirements

3.7 Withstanding reverse voltage

The flasher shall be able to withstand the reverse power polarity test for 1min; after test, it shall conform to the provisions of 3.2.

3.8 Insulation and voltage resistance

The flasher shall be able to withstand 50Hz, 550V sine wave voltage test for 1min; after test, it shall conform to the provisions of 3.2.

3.9 Temperature resistance

3.9.1 Low-temperature resisting and storing performance

Through the -40°C low-temperature storing test, the performance of flasher shall conform to the provisions of 3.2.

3.9.2 High-temperature resisting and storing performance

Through the 85°C high-temperature storing test, the performance of flasher shall conform to the provisions of 3.2.

3.9.3 Quick-temperature-change resisting performance

Through the quick -40°C low-temperature and 80°C high-temperature change test, the performance of flasher shall conform to the provisions of 3.2.

3.9.4 Low-temperature resisting working performance

When taking the -40°C low-temperature resisting performance test, the performance of flasher shall conform to the provisions of 3.2.

3.9.5 High-temperature resisting performance

When taking the 80°C high-temperature resisting performance test, the performance of flasher shall conform to the provisions of 3.2.

3.10 Moisture-thermal-cycling resisting performance

Through the moisture-thermal-cycling resisting test, the performance of flasher shall conform to the provisions of 3.2.

4 Test Methods

4.1 Test conditions

4.1.1 The installation of flasher on the test bench shall simulate the actual vehicle installation; for the lamp load measuring the load or the linear simulating the actual vehicle load, the load power error shall be ±5%.

4.1.2 The accuracy of voltage meter and ammeter shall be no less than Class 0.5.

4.1.3 The test power supply shall be DC power supply; its ripple voltage shall be no greater than 75mV (P-P).

4.1.4 The test voltage is (14±0.2)V/(28±0.2)V.

4.1.5 The basic performance test shall be performed at (23±5) °C.

4.2 Appearance inspection

Perform as per the visual inspection method.

4.3 Basic performance test

4.3.1 Working frequency and electrified rate

According to the circuit shown in Figure 1 or Figure 2, connect the oscilloscope or related test instruments to the output circuit of the flasher; under the test voltage, minimum and maximum load, measure continuously for 10 cycles; then take the average value.

4.3.2 Quiescent current

According to the circuit shown in Figure 1 or Figure 2, perform under the test voltage.

Disconnect SW1, in case the flasher is not working, measure the quiescent current in the power supply loop.

As for the flasher with quiescent current can't be measured according to the wiring methods shown in Figure 1 or Figure 2, the test method shall be determined through the negotiation between the supplier and the purchaser.

4.3.3 Voltage drop

According to the circuit shown in Figure 1 or Figure 2; voltage drop shall be measured under test voltage. Each main lamp bulb power shall be 21W, LED power shall be determined through the negotiation between the supplier and the purchaser. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 11425

Editions of QC/T 501

Edition	Title	Revision	Status
QC/T 501-2015	Automotive signal flashers	current edition	Current
QC/T 501-1999	Automotive signal flashers	previous edition	Superseded

This page sells the current edition, QC/T 501-2015. Earlier editions are listed for reference only.

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