RU1777254C - Device for control over stage network for outdoor lighting - Google Patents

Abstract

SUMMARY OF THE INVENTION: the device allows switching the network to shutdown mode according to the commands of the dispatcher, transmitting information about the state of the cascade in all modes. 1 ill.

Description

The invention relates to electrical engineering and can be used to control outdoor lighting networks.

A device for controlling an outdoor lighting network (ed. St. USSR No. 957355, H 02 J 13/00) is known which allows control and monitoring of the status of outdoor lighting networks in network operating modes:

turning on all outdoor lighting;

turning on night lights;

the inclusion of all outdoor lighting from the state: night lighting is on, morning mode, outdoor lighting is off.

Information about the state of the endpoint is transmitted by switching on the working phase wire of night illumination from the endpoint of the power supply in the direction of the head one. The device comprises first, second and third contactors at the main, intermediate and final power points. At the final power point, there are three instantaneous relays and one time relay. The device requires the formation of three control commands on the control panel. A large number of additional switching elements reduces reliability.

A device for controlling a cascade network of outdoor lighting (auth. St. USSR Nfe 1642598. CL N 05 V 37/02 1988), which allows you to control and monitor the state of the cascade network and contains the first contactors at the head, intermediate and end points power supply, and the second contactors - at intermediate and final power points, and require the installation at the final point of only two additional relays, providing three modes of network status:

turning on all outdoor lighting;

turning on night lights;

shutdown of external lighting.

Information about the state of the endpoint is transmitted by switching on the working phase wire of night illumination from the endpoint of the power supply in the direction of the head one.

The device requires the formation of two control commands on the control panel. The disadvantages include:

compliance with the condition that the response time of the first contactor of the end point should be much longer

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tripping of the first additional relay of this item:

when switching the network from the state Night illumination is switched on to the mode Switching off the ambient illumination, it is necessary to briefly turn on the entire phase of evening illumination:

compliance with the condition that the release time of the second auxiliary relay of the end point and the first contactor of this point must be equal to each other.

The prototype is a device for controlling a cascade network of outdoor lighting (ed. St. USSR No. 1707783, class H 05 B 37/02, 1989), which allows control and monitoring of the state of the cascade network and contains the first and second contactors, requires installation at the final point of two additional relays and provides the network operation mode:

turning on all outdoor lighting;

turning on night lights;

internal mode - turning on all outdoor lighting from the state Night lighting is on;

shutdown of external lighting.

The device requires the formation of two control commands on the control panel.

Information about the state of the endpoint is transmitted by switching on the working phase wire of night illumination from the endpoint of the power supply in the direction of the head one.

The self-locking circuit of the second contactor of the end point is opened by the block contact of the first contactor of this point.

There is no need to comply with the condition that the response time of the first contactor of the end point is much longer than the response time of the first additional relay of this point.

The disadvantage of the prototype is:

the need to briefly turn on the entire phase of the evening lighting in order to switch off the external lighting from the state the night lighting is on, which leads to an excessive waste of electricity.

The aim of the invention is to save energy. The expected positive effect of using the invention is a single cascade consisting of ten feed points, in which the first KNT contactors are installed at each feed point, is 87 kW / h per year.

The invention and its distinguishing features from the prototype consist in the fact that two relays are installed at the final power point, one of the terminals of the coil of the second relay is connected through the closing block contact of the first contactor to one of the terminals of the coil of the first relay, and through

parallel connected opening contact block of the first contactor and closing contact of the second relay to the terminal for connecting the second working wire of the previous lighting section connected via the closing contact of the first relay to the first output of its coil, the first output of the coil of the second contactor of the final power point is connected to the output for connecting one of the network phases through the closing block contact of the first contactor and through the disconnecting contact of the first relay and the closing contact of the WTO in series the contactor of the same power point, with the second conclusions

0 contactor coils and relays are connected by terminals for connecting the neutral wire, the main power point is equipped with a terminal for connecting the first control wire, which is connected to one of the terminals

5 of the coil of the first contactor, the second output of the coil of this contactor is connected to the neutral wire, and in the mode of switching off the ambient lighting from the On state of night illumination, the entire phase of the evening illumination is briefly turned on and then turned off according to the invention.

The head station is equipped with three additional relays, one of which is a time relay, and the end point is equipped with two additional relays, and the cascade network external lighting is turned off from the On state. head power supply, and their automatic shutdown due to the formation of a voltage pulse at the head point of the phase of the illumination phase 5, equal in duration to the sum of the response time of the first contactors several nutritional items:

Tinp Tsr. 1 goal point + 0+ Tsr. 1 several interval points,

and in one mode:

switching off the ambient light on the evening light phase conductor, two control signals are generated: 5 first signal: the appearance on the phase light of the evening illumination, counting from the head point, the voltage pulse of the evening illumination phase of duration Timp.

second signal: always lagging from the first pulse voltage of the evening illumination line, equal in duration to the sum of the release time of the first contactors of the previous paragraphs, and the main point is equipped with a terminal for connecting a second control wire, which is connected to the first terminal of the time relay coil and through a parallel connected contactor contact block and a contact of the first relay - with a terminal for connecting one of the mains phases, the first terminal of the contactor coil of the main power supply is connected via a contactor the first contact of the time relay with the output for connecting the first control wire, and through its opening contact with the output for connecting the second working wire, while the coils of the first and second relays are interconnected via the closing contact block of the contactor, and through the parallel connected opening block contactor and make contact, contact of the second relay - with a terminal for connecting the second working wire, connected through the make contact of the first relay to the first output of its coil, and at the end point one of The coils of the second relay are connected through the closing block contact of the first contactor to one of the terminals of the coil of the first relay, and through the parallel connected opening block contact of the first contactor and the closing contact of the second relay - to the terminal for connecting the second working wire of the previous lighting section, connected through the closing the contact of the first relay with the first output of its coil, the first output of the coil of the second contactor of the final power point is connected to the output for connecting one of the phases of the network through the closing block the ok contact of the first contactor and through the interconnecting opening contact of the first relay and the closing block contact of the second contactor of the same power point, while the second terminals of the coils of all contactors and relays are connected to the terminals for connecting the neutral wire.

The drawing shows a diagram of a device with three power points.

A device for controlling a cascade outdoor lighting network comprises a head 1, an intermediate 2 and an end 3 power points. At each power point, except for the main one, the first contactors 4 (evening) and the second contactors 5 (night) are installed. The main contacts 6 of the contactors 4 are connected between the terminals for connecting phase A and the terminals 7 for connecting the first working wires 8 of the corresponding section of the lighting network.

The main contacts 9 of the contactors 5 of items 2 and 3 are connected between the terminals for connecting the phase B and the terminals 10 for connecting the second working wires 11 of the previous lighting section. The coil of the contactor 4 of item 1 through contact 12 of the time relay 13 is connected to the first control wire 14. connected to the actuating point 15 of the telemechanical device connected by a communication line 16 to the control panel 17.

The coil of the contactor 4 of paragraph 1 through contact 18 of the time relay 13 is connected to the second terminal of the second working wire 11, which is connected through the signal wire 19 to the Executive point 15.

The time relay coil 13 is connected via the second control wire 20 to the execution point 15.

Time relay coil 13 is connected to

one of the phases of the network of the same name with the phase at

control wire 20, through parallel

connected block contact 21 of the contactor 4

and terminal 22 of relay 23.

The relay coil 24 is connected to the relay coil 23 block contact 25 of the contactor 4 of paragraph 1.

The relay coil 24 is connected to the second terminal of the second working wire 11 in parallel connected by the block contact 26 of the contactor 4 of item 1 and its contact 27.

The relay coil 23 is connected to the second terminal of the second working wire 11 by its contact 28.

The output of the main contact 6 of the contactor 4 of item 1 is connected to the actuating point 15 by the signal wire 29. The coil of the contactor 4 of item 2 is connected to the output 30 to connect the first working wire 8 of the previous lighting section.

The coil of the contactor 4 of item 3 is connected to the same terminal 30 of its item.

The coil of the contactor 5 of paragraph 2 is connected to terminal 31 for connecting a second

working wire 11 of the corresponding lighting section. The coil of the contactor 5 of item 3 is connected to the phase of the network via the block contact 32 of the contactor 4 of this item and through the series-connected block contact 33 of the contactor 5 and the contact 34 of the relay 35 of this item. The relay coil 35 is connected to the relay coil 36 by the block contact 37 of the contactor 4 of point 3. The relay coil 36 is connected to the second terminal 10 of the main contact 9 of the contactor 5 of point 3 in parallel connected by the block contact 38 of the contactor 4 and its contact 39.

The relay coil 35 is connected to the second terminal 10 of the main contact 9 of the contactor 5 of item 3 by its contact 40.

The device operates as follows.

All lights on mode.

The signal to turn on all the lighting comes from the control panel 17 via the communication line 16 to the actuating point 15. Both control wires 14 and 20 are energized. After a time equal to Tymp. the time relay 13 will operate and with its contact 12 will connect the voltage from the first control wire 14 to the coil of the contactor 4, and with its contact 18 will exclude the possibility of voltage from the first control wire 14 to the output of the second working wire 11, which is de-energized .

Turning on, the contactor 4 of item 1 will supply voltage to the lighting network, and through the working phase wire 8 it enters the intermediate power point 2. The contactor 4 of item 2, etc. will turn on. to the final catering point 3 cascades. When the contactor 4 of clause 3 is turned on, the contactor 5 of this clause will turn on: phase B, block contact 32 of the contactor 4 in the on state, the coil of the contactor 5.

When turned on, the contactor 5 is blocked by its block contact 33 in a circuit: phase B, connected in series to the contact 34 of the relay 35 in the off state, the block contact 33 of the contactor 5 in the on state.

When turned on, contactor 5 of step 3 will supply voltage to the lighting network via the working phase wire 11. This will cause contactor 5 of step 2 to turn on and so on. to head point 1. In step 3, the relay 36 will not turn on, since the power supply circuit of the relay coil 36 will be disconnected by the block contact 38 of the contactor 4 of this point, which is in the on state. In step 1, the switching on of the relay 24 will not occur, since the power supply circuit of the coil of the relay 24 will be interrupted by the block contact 26 of the contactor 4 of this item, which is in the on state.

In paragraph 1, the coil of the time relay 13 will receive the power supply voltage in two circuits: from the control wire 20, through the block contact 21 of the contactor 4, which is in the on state, from one of the phases of the network of the same phase

voltage coming from the control wire 20.

Hrf point 1, wire 19 will transmit information about the inclusion of the night illumination phase to the executive point 15 and via the communication line 16 to the control panel 17. The wire 29 will provide information on the inclusion of the phase of evening lighting at the head station 1. The remote control 17 will receive a signal about the mode of switching on all the lighting. In this mode, the contactors 4 and 5, the time relay 13, are energized.

Night light mode.

This mode consists in de-energizing the phase of evening illumination. The signal for switching the network to night illumination is supplied from the control panel 17 via the communication line 16 to the executive point 15. The wire 14 is de-energized, the wire 20 remains energized. The contactor 4 of item 1 is switched off, which causes the phase-wise working wire 8 to be de-energized, which in turn causes the contactor 4 of intermediate item 2 to be released, etc. to the end point 3. Having turned off, the contactor 4 of step 1 will not change the on state of the time relay 13, since the coil of the time relay 13 will receive the supply voltage through the wire 20. Having turned off, the contactor 4 of step 1 will cause the relay 24 of this point to trip : phase B, output of the second working wire 11, block contact 26 of the contactor 4 in the released state, relay coil 24.

Turning on, the relay 24 of item 1 is blocked by its contact 27 in the circuit: phase B, output of the second working wire 11, its contact 27, relay coil 24.

Closing the relay 23 of item 1 will not happen, since the power supply circuit of the coil of the relay 23 will be interrupted by the block contact 25 of the contactor 4 of item 1, which is in the off state. At the final point 3, disconnecting the contactor 4 of this item will not change the on state of the contactor 5 of item 3, which is blocked by the circuit: phase B of item 3, contact 34 of the relay 35, which is in the off state, block contact 33 of the contactor 5, which is in in the on state, coil of the contactor 5. Having disconnected, the contactor 4 of step 3 will cause the relay 36 to operate on purpose: phase B of step 3, terminal 10 of the main contact At the contactor 5, which is in the on state, block contact 38, deenergized contactor 4, relay coil 36. Turning on, relay 36 bl is surrounded by its contact 39 along the chain: phase B of point 3, terminal 10 of the main contact 9 of the contactor 5 located

in the on state, contact 39, relay coil 36.

The relay 35 of step 3 will not turn on, since the power supply circuit of the coil of the relay 35 will be broken by the block contact 37 of the contactor 4, which is in the off state. The control panel 17 will receive a signal about the night lighting mode via the signal wire 19 through the executive point 15 via the communication line 16. In this mode, there are flows: contactors 5, time relay 13, relay 24 and relay 36.

Transferring the network from the night-time light-on mode to the full-light-on mode (morning mode).

The mode is to turn on the evening light phase. The signal to turn on all the illumination comes from the control panel 17 via the communication line 16 to the actuating point 15. The power supply voltage remains on the control wire 20, the voltage appears on the control wire 14, which is connected via the contact 12 of the relay 13, which is turned on state, it is supplied to the coil of contactor 4 of item 1. Turning on, contactor 4 of item 1 will supply voltage to the lighting network and, via the working phase wire 8, is supplied to intermediate supply point 2, etc. before; end point 3.

Turning on, contactor 4 of item 1 will simultaneously supply voltage from one of the network phases through its block contact 21 to the relay coil 13 of the time. When turned on, the contactor 4 of paragraph 1 simultaneously causes the relay 23 to operate with its block contact 25 in the circuit: phase B, output of the second working phase wire 11 of the first lighting section under voltage, terminal 27 of the relay 24 in the on state, block contact 25 of contactor 4 of item 1, in the on state, relay coil 23. Having switched on, the relay 23 is blocked by its contact 28 in the circuit: phase B, output of the second working phase wire 11, the first portion of the lighting under voltage, contact 28, katu a relay 23.

Having turned on, relay 23, by its contact 22, will supply the voltage supply from one of the network phases to the time relay 13 through the circuit: phase A of step 1, terminal 22 of relay 23, which is in the on state. relay coil 13 time.

When turned on, contactor 4 of paragraph 1 simultaneously with its block contact 26 will break the power supply circuit of the coil of relay 24, but will not change the on state of relay 24

the coil of which will supply voltage through its terminal 27 via a self-locking circuit.

At the final point 3, turning on, the contactor 4, with its block contact 32, will connect the power supply from one of the network phases to the coil of the contactor 5 of this item, which is still in the on state, and with its block contact 37, the contactor 4 will connect the relay coil 35 to the phase In the circuit: phase B, terminal 10 of the main contact 9 of the contactor 5 in the on state, terminal 39 of the relay 36 in the on state, the block contact 37 of the contactor 4 in the on state, the relay coil 35.

Turning on, the relay 35 is blocked by its contact 40 in the circuit: phase B, terminal 10 of the main contact 9 of the contactor 5, which is in the on state, its contact 40, relay coil 35.

When turned on, the contactor 4 of item 3 simultaneously with its block contact 38 will break the power supply circuit of the relay coil 36, but will not change the on state of the relay 36, to the coil of which the voltage will be supplied through its contact 39 via the self-locking circuit.

Turning on, relay 35 of point 3 with its contact 34 will break the self-locking circuit of contactor 5 of this point, but will not change the on state of contactor 5, to the coil of which will be supplied the voltage from one of the mains phases through the block contact 32 of contactor 4 located in enabled state. In step 1, wire 19 will transmit information about the state of the night lighting phase switching mode to the executive point 15 and via the communication line 16 to the control panel 17.

The wire 29 will provide information about the inclusion of the phase of evening lighting at the main power point 1 .:

The control panel 17 receives a signal about the mode of switching on all outdoor lighting (morning mode).

In this mode, the following are under current: contactors 4 and 5, time relay 13, relay 23, relay 24, relay 35, relay 36.

Turning off the outdoor lighting from Morning mode consists in de-energizing the control wires 14 and 20. The signal to turn off all outdoor lighting is postulated from the control panel 17 via the communication line 16 to the executive point 15. The wire 14 is de-energized, the wire 20 remains energized, since it comes from one of the network phases through the parallel-connected contact block 21 of the contactor. 4 points 1 located in this

moment in the on state, and contact 22 of the relay 23 of paragraph 1, which is in the tripped state. The contactor 4 of item 1 is switched off, but does not change the on state of the relay 13, although it breaks with its block contact 21 the power supply voltage circuit from one of the network phases to the coil of the time relay 13, to the coil of which the power voltage continues to be supplied from one from the network phases through contact 22 of relay 23, which is in the on state due to the self-locking circuit by its contact 28. The on state of time relay 13 eliminates the possibility of voltage from the phase working wire 11 of the first lighting section through tact switch 18 13 time on the contactor coils 4, paragraph 1.

Having disconnected, the contactor 4 of paragraph 1 will cause a blackout of the phase working wire 8, which will lead to the release of the contactor 4 of paragraph 2, etc. to end point 3.

The contactor 4 of item 3, having disconnected, by its block contact 32 will break the power supply circuit from one of the network phases to the coil of contactor 5 of item 3 and cause the contactor 5 of this item to be released.

The contactor 4 of item 3, having disconnected, by its block contact 37 will break the power supply circuit of the relay coil 35, but will not change the on state of the relay 35, blocked by its contact 40 and its contact 34 supporting the breaking of the self-locking circuit of contactor 5 of paragraph 3. Contactor 5, point 3, disconnecting, will cause the power phase of the working wire 11 to turn off, which will lead to the disconnection of the contactor 5 of paragraph 2, etc. to the head point Having disconnected, the contactor 15 of step 3 provides the output 10 of the main contact 9. which will lead to the release of relays 35 and relay 36 of end point 3 and the circuit in step 3 will return to its original state. In step 1, the phase working wire 11 is de-energized, which will release the relays 23 and 24.

As soon as the relay 23 is disconnected by its contact 22, it breaks the power supply circuit from one of the network phases to the coil of the time relay 13, the time relay 13 disconnects and the circuit in step 1 returns to its initial state

At point 1, wire 19 will transmit information about the state of the night phase shutdown mode to the executive point 15 and via the communication line 16 to the control panel 17.

A wire 29 will transmit information about turning off the evening light phase at the power head 1.

The remote control 17 will receive a signal to turn off all outdoor lighting.

Mode to turn off the ambient light from the state

The mode consists in briefly switching on the phase of evening illumination of several nutrition points, counting from the main supply point in time equal to Tiip. and then disconnecting the first contactors 4 of these nutrition points. A second control signal arises, always lagging behind the first one — the voltage pulse of the evening illumination phase, equal in duration to the sum of the time released by the first contactors 4 of the previous supply points.

The magnitude of the time Timp. it is selected so that the resulting second control signal is longer or equal in duration to the sum of the response time of the first contactor 4 of the end point and the relay of this point, whose contacts break the self-locking circuit of the second contactor of the end point.

The signal to turn off the ambient light from the On state is that night illumination is supplied from the control panel 17 via the communication line 16 to the executive point 15. The control wire 14 remains de-energized, and the control wire 20 which is energized is de-energized. The time relay 13 releases and, with its contact 18, supplies the power supply voltage from the second working wire 11 of the first illuminated portion of the voltage to the coil of the contactor 4 of item 1. Having disconnected, the time relay 13 simultaneously disconnects the voltage supply circuit from the output with its contact 12 the second working phase wire 11 through terminal 18 to the circuit of the first control wire 14. Turning on, the contactor 4, point 1 simultaneously produces:

applies the voltage supply from one of the network phases with its block contact 21 to the coil of the time relay 13;

will trigger the relay 23 with its block contact 25;

will supply the supply voltage to the lighting network via the working phase wire ;,

Relay 23 will operate according to the circuit: phase B. withdrawal of the phase working wire 11. is under voltage, terminal 27 of relay 24, which is on due to the self-locking circuit with its contact 27, block contact 25 of contactor 4, which is on state, relay coil 23.

Relay 23, turning on, will simultaneously produce:

is blocked by its contact 28 in the circuit: phase B, the output of the phase working wire 11 of the first illuminated portion of the voltage, its contact 28, relay coil 23;

supplies the voltage supply from one of the network phases with its contact 22 to the coil of the time relay 13.

The starting point for the start of Timp formation. is the moment of supplying voltage from one of the network phases to the coil of the time relay 13 by the block contact 21 of the switched on contactor A of point 1.

Through the time of imp. Tsr. 4 points 1 + TSr. And paragraph 2 of the relay 13 time will work and simultaneously produce:

by its contact 18 it will disconnect the voltage supply circuit from the output of the phase working wire 11 of the first illuminated portion of the voltage to the coil of the contactor A of paragraph 1;

will cause the contactor to trip 4 points.

In accordance with the selected time Timp. when the time relay 13 is activated, the contactor 4 of item 2 will be in the on state. Having disconnected, the contactor 4 of paragraph 1 simultaneously produces:

With its block contact 25, it will break the power supply circuit of relay 23, but will not change the on state of relay 23, which is self-locking by its contact 28;

with its block contact 21 will break the supply circuit of the voltage supply from one of the network phases to the relay coil 13, but will not change the on state of the time relay 13, the coil of which will receive the voltage from one of the phases through terminal 22 of relay 23, finding now on;

will cause a blackout of the working phase wire 8, which will lead to the disconnection of the contactor 4 of paragraph 2.

The sum of the release times of the contactor A of step 1 and the contactor 4 of step 2 is the time during which the phase voltage of the evening light, the second control signal, takes place on the phase conductor 8 between the sections of the power points 2 and 3.

Due to the presence of the second control signal at point 3, the contactor 4 will turn on, which simultaneously will produce:

by its block contact 32, it will supply voltage from one of the mains phases to the coil of the contactor 5 in the on state;

With its contact 37, it will supply the supply voltage to the relay coil 35, causing the relay 35 to operate on the circuit: phase B of the main contact 9 of contactor 5 of item 3, which is in the on state, terminal 10, contact 39, block contact 37 of the con- clock 4, in the on state, relay coil 35,

With its block contact 38, it will break the power supply circuit of the relay coil 36, but will not change the on state of the relay 36, to the coil of which the voltage is supplied through the self-locking circuit by its contact 39.

Turning on, relay 35 will simultaneously produce:

is blocked by its contact 40 through the circuit: phase B of the main contact 9 of the contactor 5 of item 3, which is in the on state, terminal 10, its contact 40, relay coil 35;

with its contact 34 it will break the self-locking circuit of the contactor 5 of paragraph 3, but will not change the on state of the contactor 5 of this paragraph, since the voltage of the power supply from one of the network phases through the contact block 32 of the contactor 4 located

in the on state. The disappearance of the second control signal (blackout of the phase working wire 8 in the area between 2 and 3 power points) will lead to the shutdown of contactor A of step 3. Having disconnected, contactor 4 of step 3 will simultaneously produce:

will cause the coil to break

contactor 5 with its block contact 32 and contactor 5 of this item will release. Having disconnected, the contactor 5 of paragraph 3 will cause a blackout of the working phase wire 11, which will lead to the disconnection of the contactor 5 of paragraph

2 etc. to the main power point 1. At end point 3, relays 35 and 36 are turned off and the circuit at end point 3 returns to its original state. At the head point, relays 23 and relays 24 are disconnected.

relay 23, by its contact 22, will break the power supply circuit of the coil of time relay 13, it will turn off and the circuit at head 1 will return to its original state. Drive 19 at step 1 will transmit status information

- a mode for turning off the phase of night illumination to the control panel 17 through the executive point 15 via the communication line 16. The wire 29 will provide information about the disconnection of the previous illumination phase at ONE point 1. To the control panel 17

a signal will turn on to turn off the entire outdoor lighting.

Claims (1)

SUMMARY OF THE INVENTION A device for controlling a cascade outdoor lighting network comprising a head, an intermediate and an end power point, each of which has two contactors, excluding a head power point, in which one contactor is installed, the main contact point contactors at the end point the contacts of the first contactors of all power points are connected between the terminals for connecting one of the phases of the network and the terminals for connecting the first working wires of the corresponding section of the lighting network, similar to the strokes of the second contactors of all points except the head are connected between the terminals for connecting another one of the phases of the network, and the terminals for connecting the second working wires of the previous section of the lighting network, the head power point is equipped with a terminal for connecting the first control wire and a noise terminal for connecting signal wires, which are connected to the outlets for connecting the corresponding working wire, one of the terminals of the coil of the first contactor of each power point, except the head one, is connected to the terminal for connecting the first working wire of the previous section of the lighting network, and one of the terminals of the coil of the second contactor of each power point, except the final one, is connected to the terminal for connecting the second working wire of the corresponding section of the lighting network, two relays are installed at the final point of supply, one of the terminals of the second coil the relay is connected through the closing block contact of the first a contactor to one of the terminals of the coil of the first relay, and through parallel-connected block contact of the first contactor and the make contact of the second relay to the output to connect the second working wire of the previous lighting section, connected through the make contact of the first relay to the first output of its coil, the first output of the coil of the second contactor of the final power point is connected to the terminal for connecting one of the network phases through the closing block contact of the first contactor and through the disconnecting contact of the first relay in series and a closing block contact of the second contactor of the same power point, while the second terminals of the coils of all contactors and relays are connected to the terminals for connecting the neutral wire, different in order to save energy, the power supply head is equipped with two relays, a time relay and a terminal for connecting a second control wire, which is connected to the first terminal of the relay coil time and through the parallel connected closing contactor block contactor and the contact of the first relay with the output for connecting one of the mains phases, the first output of the contactor coil of the main power supply is connected through the making contact of the time relay with the output for connecting the first control wire, and through its opening contact, to the terminal for connecting the second working wire, with In this case, the coils of the first and second relays are interconnected with the terminals for connecting the second working and neutral wires, similarly to the coils of the first and second relays of the final power point. . . h “l "B40 N About fe p a , b lo / N e T B f-g m Ј . Ј - "n th / cho MS1 o Nj B 5 pr "H, L t "s. L-t- I "si PS m "31