Wiring diagram of fluorescent lamp, double control lamp and safety lamp - News - Global IC Trade Starts Here Free Join

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Wiring diagram of fluorescent lamp, double control lamp and safety lamp




fluorescent lamp




Double control light




Safety light wiring and indicating the role of each component
1. Ballast: When the starter is turned on, it limits the filament power of the fluorescent lamp (the filament heats up and heats the mercury vapor in the lamp to reduce its discharge voltage); when the starter is restored to the off state, the lamp The mercury vapor gas in the tube is discharged, and its gas discharge resistance is small, and the discharge current is still limited by the ballast. In addition, when the starter is restored to the off state, there may be residual magnetic field energy in the core of the ballast, which is converted into electric field energy, and a counter electromotive force is generated at both ends of the ballast, which is superimposed with the power supply voltage. It is beneficial to the gas discharge in the lamp tube.
2. Starter: This is an inflatable tube filled with helium and two electrodes, one of which is a bimetal. After the switch is closed, the helium gas is discharged (at this time, since the mercury vapor in the lamp tube is in a cold state, the discharge voltage is high and cannot be discharged), the bimetal is thermally deformed until the two poles are turned on, providing a path for the filament current. When the two poles of the starter are turned on, the inside is no longer discharged and cooled, and after a certain period of time, the state is restored to the off state. The mercury vapor has been heated in the lamp tube, and the discharge tube has a discharge voltage, and the lamp emits light.
Lamp wiring requirements
1, the installation height:
(1) The general indoor (office, shop, residential) lamp head should be no less than 2m to the ground.
(2) Wet and dangerous places (relative humidity above 85%, ambient temperature above 40%, conductive dust, conductive ground) should be no less than 2.5m on the ground.
(3) For outdoor temporary lights, the installation height should not be less than 3m.
2. Installation of the switch:
(1) Pulling switch: The installation height should be 2~3m from the ground, 0.3m from the ceiling, and 0.15-0.2m from the door.
(2) Concealed switch: The installation height should be 1.2~1.4m from the ground; 0.15~0.2m from the door.
(3) The handle switch should be connected to the circuit when the handle is moved downward, and the circuit is opened when the handle is moved upward.
3. Fixing the lamp:
(1) Lamps below 1Kg: can be directly hoisted with wires, but should be “knotted” in the lamp cap and the hanging box.
(2) 1~3Kg luminaire: When hoisting chain or pipe hoisting is used, when hoisting with hoisting chain, the wire should be woven in the hoisting chain.
(3) Lamps above 3Kg: should be installed on embedded parts (hooks or bolts).
4. Installation of safety lights:
(1) The iron core and the outer casing of the safety light transformer should be grounded (zero). If it is not reinforced, the secondary end should also be grounded.
(2) The sheath wire shall be used for the primary line, and its length shall not exceed 3 m.
(3) Both the primary and secondary sides should be short-circuit protected (for example, with a fuse).
(4) The safety light transformer should not be brought into a metal container for use.
5, lamp wiring:
Regardless of the type of fixture installed, the switch should control the phase line. When using the screw socket, the phase line should be connected to the top core and the neutral line should be connected to the screw. For bulbs with a capacity of 100W or more, a porcelain lamp socket is required. When installing a fluorescent lamp, the ballast capacity should be compatible with the capacity of the lamp.
6, the installation requirements of the socket:
(1) The wall-mounted socket should be no less than 1.8m from the ground, and the concealed socket should be no less than 0.3m. The safety outlet should be applied to children's activities.
(2) Sockets of different voltage levels should have obvious differences in structure to prevent mis-insertion.
(3) It is strictly forbidden to install the rocker switch and the socket.