On the problems of LED lighting products in the process of certification testing

First, the main safety problems of road lamps

1, the use of tempered glass

In accordance with the requirements of GB7000.5 standard, including road tunnel lighting lamps should use tempered glass, toughened glass glass not only use mechanical strength requirements, also once broken glass, ordinary glass as Figure 1, large pieces of glass and a lot of acute fall easily. If the use of tempered glass, once broken after the situation is completely different, tempered glass will be broken into a lot of small particles and no obvious acute angle.

Figure 1: broken glass fragments of ordinary glass

2, LED control device external, but the control device has no independent mark

The LED control unit is external, the control unit must have the independent mark. With independent labeling, means that the relevant requirements of the relevant part of the lamp must meet the standards such as: external wire fixing device; anti shock; mounting surface temperature; IP (dustproof and waterproof) test, not only understood as independent markers to IP (anti dust, waterproof test), so no, independent marker and no related test standard LED control device does not allow external. An independent mounting control device with relatively complete markings is shown in figure 3.

Figure 2: there is no independent installation mark, write only IP67

Figure 3: independently mounted control devices with relatively complete markings

3, external cable does not meet the standard requirements

GB7000.5 road and street lighting safety requirements of luminaires for road and street lighting outside conductor standard which is mainly from the GB7000.1 standard 5.2, "if the flexible cable or cord as provided by the lamp manufacturer with the power connection, their mechanical and electrical performance at least shall comply with GB5023 and GB5013.

Figure 4: qualified external cable

4, the connector can not meet the requirements of the whole lamp waterproof waterproof

Many connectors for road lamps are exposed directly to the open air condition, so the connector is required to comply with the same IP protection requirements for road lamps, as well as to maintain reliable electrical contact. Unqualified waterproof waterproof connector connector shown in Figure 5, this type is used in many IP44 lamp string which is generally not up to IP65 and above level, meet the protection requirements of the IP connector is shown in Figure 6, the connector can reach the level of IP66.

Figure 5: failed connectors

Figure 6: qualified connector