SU20717A1 - Device for turning on and off at a distance of street lighting - Google Patents

Description

The present invention of a kacaexcH device for switching on and off at a distance of street lighting, the lamps of which are connected between a three-phase network with a neutral wire and an additional fifth wire, consists of 4to to actuate the mechanism of the device which serves a DC relay connected to current source using ground wire and ground.

In FIG. 1 depicts the scheme of the proposed device; , figs. 2-modified device.

Street lighting lamps are turned on, as shown in FIG. 1, between the zero conductor O and the additional wire 11. Their circuit is closed by means of a single pole knife switch 13, the knife of which is connected to the spring box of the electromagnet 7 and held in the locked position by the spring dog 14. The latter is controlled by an electromagnet 8. The windings of these two electromagnets are connected to the network by the switch 6. The latter is a T-shaped bar, one end of which is connected by mechanical transmission to the ratchet 5, and the other carries the contacts 15, 16 and 19 and slides over the contact 18.

The ratchet pawl 20 is controlled by an AC 4 relay, which is turned on between the phase and zero of the network, by using contacts 21 closed by the relay 2. The latter is powered from a DC source 1 installed at the station and connected to it via ground and neutral wire O. To adjust the current in relay 2, the latter is equipped with an additional resistance 3. To turn on the lamps 12, it is necessary to close the breaker 23 for a few seconds. Relay 2 will work, turn on the relay 4, and the core of the latter will turn the ratchet with a pawl 20- e |) nets and closes the circuit of the electromagnet 7 in contacts 17 and 18, which will turn on the switch 13, with the dog. 14 will keep the latter from turning off. The latter can be made only by the secondary closure of the knife switch 23. Relay 2 and 4 will work in the same order, and the ratchet 5 will turn now so that the switch 6 opens the contacts 17, 18 and closes the contacts 15, 16 of the electromagnet 8. The dog 14 will chickpea last, and the knife switch 13, under the action of the springs of the solenoid bar of the electromagnet 7, is turned off and will drop back upon its departure

for a doggie 14. With small installations, electromagnets 7 and 8 may be absent, and the lamps can be switched on and off directly by switch 6. In addition, the device can be given a slightly different form of implementation (Fig. 2). Instead of relay 4, a solenoid is applied 24. A core - its 33 is connected with a pull 30, which is connected to the shaft 31 of a rotary switch 34. The drum of this switch sits on the shaft 31 and has two diametrically located contact plates. A ratchet 29 is rigidly connected to the shaft, and its dog is fixed on the drum. T he 30 is under the action of the spring 27, and the movement of the core 33 is limited to the stop 32.

This device operates exactly the same as above. When the relay 2 has worked, the core 33 will turn the shaft and the ratchet, and the latter, by means of the pawl 28, switches 34. As soon as the contacts 21, 22 are open, the spring 27 will return the shaft and the ratchet to its previous position, but the switch will remain

in the position assigned to it, the plates 25 will connect the contacts 26, and both groups of lamps 12 shown in the drawing will be switched on.

The subject of the patent.

1. Device for switching on and off at a distance of street lighting,. the lamps of which are connected between a three-phase network with a neutral wire and an additional fifth wire, characterized by the use of a direct current relay 2, connected between the ground and the neutral wire and intended to be connected when the neutral wire is connected to a direct current source 1 connected to ground. the circuit of the relay of alternating current 4, which includes the electromagnet 7 of the switch of the lighting lamp-x.

2. A variation of the device described in claim 1, characterized in that the relay is replaced by a solenoid 24, the core of which is intended to actuate the rotary switch 34g of the lamp circuit.

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