The lamps need to be connected to the power supply, and the power connection modes are different. The structural design of the lamp power connection mode needs to meet the function of the lamp, which is convenient for the customer to use, and is suitable for the overall structure of the lamp, and must ensure the reliability and protection of the electrical connection. The safety of electric shock protection and the environmental applicability of the outer casing protection are important links that can not be ignored in the structural design of the luminaire.
1, the lamp power connection method
Common lighting and power connections are:
1 terminal block, the power cord is connected to the inside of the lamp;
2Connect the lead wires, connect the power cable to the lamp connection leads, and put them into the lamp housing or the junction box specified in the manual to protect the internal wires and terminals;
3 Non-removable flexible cable or cord, the electrical connection system of the luminaire is led out of the luminaire casing, connected to the power source by a non-removable flexible cable or cord connection plug or into the junction box;
4 Non-removable flexible cable or cord + with plug or appliance socket, suitable for portable lamps. When used normally, the lamp can be easily moved from one place to another after being connected to the power supply;
5 plug with socket, suitable for socket-mounted luminaires;
6 Adapters connected to the power rail for rail mounted luminaires;
7 appliance socket, use the power connector to insert the appliance socket installed on the lamp housing to complete the power connection of the lamp, such as the fluorescent lamp strip with loop connection;
8 screw or bayonet cap for semi-luminaires.
Among the above-mentioned lamp power connection modes, the most common lamp power connection modes are the first three, which can be applied to various lamps and have versatility, and most of the lamps can be selected by any of the above-mentioned power connection methods 1 to 3. The last five power connection methods are suitable for the special structure and use of the luminaire, with speciality and specificity, and no comparability.
2. Comparison of common lamp power connection methods
2.1 Differences in common lamp power connection methods
Since the above three power connection modes are applicable to various lamps, most of the lamps can be selected in any of the three power connection modes, which are comparable and related. We can use FIG. 1 to briefly explain The difference between the three power connections.
The buried luminaire shown in Figure 1 adopts a power connection method of "non-removable flexible cable or cord". The electrical connection system of the luminaire is led out of the luminaire casing by a non-removable flexible cable, and is connected to the power source. If the non-removable cable is removed, the lamp can only be connected to the terminal block by introducing the power cable into the lamp cavity. This type of power connection is called a â€œterminalâ€. If the terminal block is removed together, the lamp can only be connected into the lamp cavity and then connected to the terminal block to connect the power cable to the internal connection of the lamp. This type of power connection is called "connection lead". ".
The structure configuration of the three power connection methods is shown in Table 1. Usually, the power connection accessories are provided by the customer.
Table 1 Configuration of common lamp power supply connection
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