JPS62502164A - Circuit device for simultaneously supplying power to multiple loads using one power supply network - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Multiple loads simultaneously on one power grid circuit device for supplying power to The present invention enables a large number of electrical loads ( The present invention relates to a circuit device that simultaneously supplies power to the Verbraucher.

Multiple loads in one socket block It is known to connect to the power grid by This socket block is suitable for all sockets. You can have one switch that acts on all the switches in common, and All connected loads are then turned on and off together.

In this case, in load sections that are not fully connected to each other High input current collisions that can cause electromagnetic disturbances91 tromstZsse).

A socket block is attached to the block and used for the switch to be operated. It must be kept securely, i.e. mounted on a work table, for example. The connecting cable of the load to be connected must be placed on the work surface. The disadvantage of this socket block is that it interferes with the cleanliness of the work surface.

The load itself is equipped with a suitable number of connection sockets for other loads, and this socket It is known to turn on and off the load directly by a switch in the load section.

The main switch is therefore fixedly predetermined. Provided as a load section Since such a device is not mass-produced, the central switch function is operated by a switch. It cannot be located in another device that is well accessible by the person. additional connections When the socket faces the work surface, the same applies to the work surface and cleanliness as stated above. It is very effective.

From U.S. Pat. No. 4,051,547, the Circuit arrangements that can be used are known. The circuit arrangement has two output connections; Both output connections are connected directly to the power grid conductor. Both outputs are switched are connected to each other as follows: i.e. the current through one output. In the flux, the power supply connection at the other outputs is connected in such a way that it is disconnected.

As long as only one of each of the plurality of outputs is retained, one of the loads is superior to the operation of another load section. Multiple loads may only be operated alternately. Can be done.

A circuit device of the type indicated at the beginning is described in German Patent Publication No. 2347508. It is publicly known. The power grid is provided with an overvoltage by one capacitor. Sui The capacitor is shorted by the operation of the switch. The discharge current of the capacitor is relayed The relay electrically connects the load section.

According to German Patent Application No. 1515613, carrier wave modulation is applied to the power grid conductor. control signal (tr, I'gerfrequent modulierte St Circuit arrangements are known in which the control signal Open the slave switch and thereby connect the load to the power supply grid. special frequency fill The control signal prevents the control signal from reaching the load set.

Another circuit arrangement is known from DE 27 38 434 A1.

The relay connected to the power supply network is opened by actuation of a pushbutton switch, thereby The load section is similarly connected to the power supply network.

All of the circuit devices listed last require that the circuit device requires fixed location wiring means. They have something in common. Any number of load sections at any access location to the power grid connection and with the aid of a centrally operated switch is possible. It's not Noh.

The invention connects the load at the nearest overall available access to the power supply network. A circuit device that can be operated manually and separately from the switch located at the load. Central connection at any position for multiple loads without the need for switches to actuate The connection part presents a circuit device that can be placed outside the working surface to be attached to the load part. The challenge is to provide The circuit device is designed to eliminate gaps, e.g. switching pulses. and when triggered by switch actuation in the center of the load, such as short-term overvoltages. It should also provide the possibility of controlling the road noise generated by the load section.

This problem is solved by the present invention in a circuit device of the type indicated at the beginning. A first electrical load is connectable (einffffgbar), and the load so that the main switch operates as a starting switch for starting all load sections. A first current supply circuit is provided, and a number corresponding to the desired number of other load sections is provided. Contains a power supply connection socket, which can be opened and closed by one electrically controllable switch A second current supply circuit is provided, and a switch is controlled in the first current supply circuit. This problem is solved by the fact that a current sensor is included.

The basic part of the invention is therefore that only from the activation of one of the load sections the remaining load sections can be activated. The purpose is to derive a control signal for switching on.

The advantage of the new circuit arrangement is that any one of the many loads to be supplied simultaneously can be It is defined as a load section that belongs to the current supply circuit, and the main switch of the load section Connecting or disconnecting not only the unit itself but also another load unit to the power supply network. The main switch of the last load section shown must be kept in the closed position at all times. It lies in being able to be done. .

The circuit arrangement is integrated into a socket block which is connected to the power supply network in the usual manner. be able to. The circuit device can be connected to a load section at any position. can be placed outside the working range required for operation.

In order to avoid current peaks when the switch is turned on, a delay member and a A starting current limiter located after the electrically controllable switch in the second current supply circuit Can be connected. Also, an EMV filter is connected to at least one of the feed wave circuits. can be continued.

Embodiments of the invention are shown schematically in the drawings and will be described below.

As shown, two feed wave circuits 1.2 are provided, both feed current circuits connected to the power grid. are connected in parallel to each other. The feed wave circuit 1 is a first negative circuit having a main switch. A first socket block 3 for the load is provided. The feed wave circuits 2 are connected in parallel to each other. It has a large number of socket blocks 4 to 7 connected together. of the plurality of socket blocks. One electrically actuatable two-pole switch 8 is provided at the front, said two-pole switch The current sensor 9 is attached to the feed wave circuit 1 and is energized by the feed wave circuit. controlled.

The functionality as described is as follows: the user should connect, and Select one load section from among the multiple load sections to be supplied with power, and switch the main switch of that load section. The user also switches the remaining loads, and the user selects the selected load. The parts are connected via the socket block 3 (master). The remaining load parts are sockets. The main switch of the remaining load section connected to the load blocks 4 to 7 (slab (subordinate)) is , are switched to the ON'' position.

When the user turns on the load section of the feed wave circuit 1 using its main switch, A current flows through the feed wave circuit l, and the sensor 9 responds to the current and turns the switch 8 "ON". Therefore, all load sections are controlled only by the operation of the main switch of the first load section. Voltage is applied just by moving.

When this main switch is switched to the OFF” position, the current sensor 9 , and all load parts are in the current cutoff state.

To avoid peak current when switching on multiple loads at the same time, The feed wave circuit may be provided with a starting current limiter 10 after the switch 8, The starting current limiter is switched by the current sensor 9 via the delay member 11. It will be done.

A large number of load sections (slabs) are placed at the rear, reducing input current peaks. is not sufficient, the feed wave circuit 2 connects a large number of socket blocks 4 to 4 after the switch 8. 7 or 4' to 7', etc., respectively, The branch circuits each have their own starting current limiter 10 or 10' etc. as well as One delay member 11 or 11' or the like is provided. In this case, the delay components are selected separately. Since the starting current limiter is selected, the starting current limiter operates in sequence.

Finally, the transmission of noise from the power grid to the new circuit or from the new circuit to the power grid It is advantageous to provide at least one EMV filter 12 which sufficiently prevents There is a possibility that Filters can be installed in one of both feeder circuits or as required. As shown, it can be commonly attached to both feed wave circuits.

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Claims (3)

[Claims] 1. A single power supply network can simultaneously serve multiple electrical loads through the joint operation of a single switch. In a circuit device that supplies power to (a) a first electrical load section (3 ) can be connected, and the main switch of the load section can be used to start all load sections. A first current supply circuit (1) adapted to operate as a switch is provided. and (b) a number of feed connection sockets (5 to 7) corresponding to the desired number of further loads. and a second current supply circuit that can be opened and closed by one electrically controllable switch (8). (2) is provided, and (c) A current sensor (9) that controls the switch (8) is installed in the first current supply circuit (1). A circuit device characterized in that it is attached. 2. After the current sensor (9), the delay member (11) and the second current supply circuit (2) A starting current limiter (10) located after the electrically controllable switch (8) is connected. The circuit device according to claim 1, characterized in that the circuit device is connected to the circuit device. 3. An EMV filter (12) is connected to at least one of the current supply circuits (1, 2). The circuit device according to claim 1 or 2, characterized in that: