Under what circumstances do street lights directly use time controlled switches instead of AC contac

Under what circumstances do street lights use time-controlled switches directly without using AC contactors?

Time-controlled switches and AC contactors are both electrical devices used to control street lights, but in some specific situations, using time-controlled switches can be more convenient and economical.

First of all, the time-controlled switch is suitable for scenarios where it is necessary to switch street lights on and off according to a specific time period. For example, on the main roads of the city, due to the large traffic flow, it is necessary to maintain the brightness of the street lights at night, but in the early morning, the traffic flow is reduced, and the brightness of the street lights can be appropriately reduced or some street lights can be turned off to save energy. In this case, the time-controlled switch can automatically control the switch of the street light according to the preset time period without human intervention.

The AC contactor needs to be operated manually, which is not as convenient as the time-controlled switch.

Secondly, the time-controlled switch can automatically adjust the brightness of the street light according to the time of day when it is bright and dark. In some areas, the hours of dawn and darkness vary depending on the geographical location. Use the time-controlled switch to automatically adjust the brightness of the street lights according to the local dawn and dark time to adapt to different lighting conditions.

AC contactors, on the other hand, do not have this kind of automatic adjustment.

In addition, the time switch can be flexibly adjusted according to the needs of the street lamp. For example, in some special occasions, it is necessary to temporarily increase the brightness of the street lamp or extend the use time of the street lamp, and the use of the time control switch can be easily adjusted. The AC contactor, on the other hand, needs to be operated manually, which is not as flexible as the time-controlled switch.

To sum up, when the street lamp needs to be switched on and off according to a specific time period, automatically adjust the brightness according to the time of dawn and darkness, or need to flexibly adjust the brightness, the time-controlled switch can be used directly without using the AC contactor. The time-controlled switch is automated, flexible and economical, and can better meet the control needs of street lights.

Below 900W, the maximum power controlled by the time-controlled switch.

Out to the top of the exchange, the exchange to the time control. Time control to street lights 2 times control line Are you a button or 2 a transfer switch automatically and manually a contact point is connected to the incoming power supply, that is, the circuit breaker outlet is led out.

1.The smart copy-powered street light control.

The KQ-LD1 is fixed on the control cabinet or control board, and the input phase wire (A) and neutral wire (N) are connected, because the controller does not contain a fuse inside, a fuse of 10A needs to be connected to the input phase wire.

2.Then connect the output terminal to a circle of the contactor coil J1, if the relay coil voltage is 220V, the other end of the coil J2 is connected to the zero wire (N); If the coil voltage is 380V, J2 at the other end of the coil is connected to a different phase wire (B or C phase) from the input terminal.

How does the time-controlled switch intersect with the copy current contactor.

BAI controls the street lights.

How to connect the AC contactor to the time-controlled switch

1.Connect the mains (220V) to the air switch (it is better to use different colored wires for the DAO live wire and neutral wire).

2.Connect the air switch to the time-control switch (the inlet on the left).

3.Connect the air switch to the AC contactor, and connect the fire zero wire of the air switch to L1 and L2 of the AC contactor.

4.Connect the time-controlled switch to the AC AC contactor, and connect the neutral line (right outlet) of the time-controlled switch to the AC contactor A1 and A2.

5.Connect the wire of the lamp to the AC contactor, and connect the neutral wire of the lamp to the T1 and T2 of the AC contactor.

1. In the case of power failure, measure whether the voltage at both ends of the contact coil is zero or lower than the release voltage value.

2. When the above measurement, the voltage at both ends of the coil is zero or lower than the release voltage value, which is a mechanical fault, and the armature in the contactor is stuck, and the contact hole cover is adhesion.