Installation arrangement for mains load power control - has two parallel connected control switches for separately controlling separate loads, and actuator which determines phase angle

摘要

The installation arrangement for power control of loads (V1,V2) connected to mains has a phase angle controller with a load switch (12) in a main current loop (11) and a mains voltage controller (13). The voltage controller maintains its input and output signals and its phase angle signal via at least one actuator (8a,b,c) and a control input (19). The actuator period determines the phase angle. The current loop is separated from a low voltage control circuit (9) by an opto-coupler (18) with a light emitting diode (20). Two controllers (S1,S2) anti-parallelly connected in the same low voltage control circuit relative to the diode direction separately control the two loads. Two de-coupling diodes (D1,D2) are connected in series with the switch contacts. A middle contact (B) lies on one side of the diodes (D1,D2) in one line (5b) of the low voltage circuit. A common contact (A) lies on the other side in the other line (6) of the circuit. USE/ADVANTAGE - Esp. for use as dimmer to control brightness of light sources. Power of two loads can be controlled independently without needing to increase number of leads in arrangement.