DE202008016900U1 - Circuit arrangement for the phase control of the phase conductors of an (electrical) cable arrangement, preferably for mobile mixing devices in construction - Google Patents

Abstract

Circuit arrangement for phase control of the phase conductors of an (electrical) cable arrangement, comprising a control cabinet with a voltage source, at least one arranged in a mobile or ortveränderlichen system electric motor as drive means, a number of arranged in the cable arrangement phase conductors for the passage of an electrical voltage from the voltage source to the Electric motor and a neutral / neutral conductor, characterized in that the phase conductors (R; S; T) of the cable assembly (5) between the voltage source (3) and the drive means (1) with signaling means (L1 to Ln) are electrically connected to the display the voltage (U) at each phase conductor (R; S; T) or for indicating a failure of the voltage (U) at least one of the phase conductors (R; S; T).

Description

The The invention relates to a circuit arrangement for the phase control of Phase conductor of a (electrical) cable assembly, which in a Voltage source and having a mobile or ortveränderlichen and having at least one electric motor System connected control cabinet for powering the electric motor is provided as a drive device for the system.

The Invention is applicable to both multi-phase Power as well as for a one-phase luminous flux operated plant of the type mentioned.

The Invention is particularly applicable to the control or a proof of the electrical voltage both in the respective single phase and in a number of multiphase ones Phase conductors of the arranged in the cabinet cable arrangement for a mobile mixing device for the production of various types Mortar mixtures, for mobile mixing pumps or Screed machines with electric drive, being between the voltage source in the cabinet and the respective electric motor or the respective phase conductors the cable assembly with one signal device in combination stand.

at an electrical system with an electric motor as a drive device There is generally a disadvantage in that, for example, the cause for a failure of the electric motor on a construction site regularly not be determined easily can because for a corresponding operator of the plant initially there is no clarity about the cause and it is not clear why, for example, the plant or the corresponding drive device does not start or where the mistake is to look for it.

There regularly the operator is not authorized for has appropriate actions on an electrical system and For him, therefore, interventions in the system are unspoken is in case of failure of electrical systems an authorized Specialist required.

These First, a review of the power supply and the electrical connections in the plant all the way to make the respective drive device, thereby possibly a relatively high amount of work can be required which inevitably lead to long waiting times if the cause of the failure can not be in short Time is localizable and recoverable.

From the DE-OS 2832113 A1 is a KB-automatic box with phase protection and phase control device for monitoring the individual phase conductors known.

at This device is the vending machine box both for hedging the individual circuits at three-phase and to control the can be used outgoing lines, wherein in the respective lines optical or other signaling devices are used, which an error or a decommissioning of a Phase conductor or more phase conductor reports.

The Solution according to the aforementioned type is only suitable for stationary electrical equipment and therefore not for mobile or mobile installations used.

Of the Invention has for its object to provide a device which makes it possible in a simple and cost-effective way when operated with single or multi-phase, mobile or place-changeable electrical equipment the failure of at least one phase conductor determine appropriate cable arrangement and display accordingly.

The Task is according to the invention with the features solved according to claim 1. Advantageous embodiments and further developments of the invention are in the subclaims described.

With The invention is over the prior art Advantage in that even by an operator of a particular plant without switching permission can be immediately established that a Failure of the system on a fault in the electrical Infeed is or a part of corresponding Phase conductor is due, which optically immediately recognizable.

The Invention thus allows the operator as a non-expert a mistake, the cause and the highest Probability Reason for a corresponding, building electricity side Failure of the plant has been noticed immediately and as well can pinpoint.

Consequently the following expert who has been consulted and authorized can: Eliminate the fault without time-consuming troubleshooting, resulting in Shorter downtimes and reduced costs can be.

The Invention will be described below with reference to an embodiment and a drawing explained in more detail. In the associated Show drawing:

1 a partial representation of a circuit arrangement according to phase control the invention for use, for example, in a mobile mixing plant;

2 and 3 Embodiments / variants of the circuit arrangement according to 1 ,

In the 1 a circuit arrangement for phase control for the operation of an example mobile mixing plant is shown in excerpts, in which an electric motor as a drive means by the reference numeral 1 is marked.

According to the 1 is the electric motor 1 with a motor protection switch 1.1 equipped, and is in a housing, not shown 2 the said mixing device used to drive a corresponding mixing shaft.

The electric motor 1 is according to the version with a multi-phase power or electrical connection as a voltage source 3 for providing a respective voltage U via a main switch 4 by means of a more wire cable arrangement 5 connected to phase conductors R, S and T and a neutral conductor N or center conductor MP.

In one of the phase conductors R, S or T is after the main switch 4 a single phase consumer 6 electrically conductively integrated, which is provided for example for driving a pump for the provision of water to the mixing device.

In the circuit arrangement is at a distance in front of the electric motor 1 Furthermore, a phase sequence relay 7 integrated into the phase conductors R, S and T.

To accommodate the electrical components and controls is finally an unspecified described cabinet 8th provided with the housing 2 for those in the case 2 arranged drive device or the electric motor 1 is directly connected.

According to the 1 is between the voltage source 3 and the main switch 4 each of the phase conductors R, S and T is connected in a single phase to a signaling device L1 to Ln, three signaling devices being provided according to the described embodiment and being designated L1, L2 and L3.

The Signaling devices L1 to L3 each have a first connection A1 and a second port A2.

The Signaling devices L1 to L3 are according to this Version with their respective first port A1 with the Phase conductors R, S and T connected where the terminal A1 / L1 with the phase conductor R, the terminal A1 / L2 with the phase conductor S and the Terminal A1 / L3 is connected to the phase conductor T.

The respective second terminals A2 are connected together here with the N / MP conductor (s), whereby a corresponding current with the voltage U from the voltage source is connected 3 through the respective phase conductors R, S and T with the main switch closed 4 to the drive device 1 and also flows through the signal devices L1 to L3.

If, for example, light-emitting diodes are used as signal devices L1 to L3, they light up because of the cable arrangement 5 flowing current and according to the corresponding power consumption of the signal devices L1 to L3, so that it can be seen that the phase conductors R, S and T between the voltage source 3 and the main switch 4 lead a corresponding voltage U and closed switch position of the motor protection switch 1.1 the electric motor 1 is in operation.

For recognizability of the signal devices L1 to L3 these are in a suitable position on the control cabinet 8th arranged so that the respective operator can immediately and easily recognize when a malfunction of the system and at least one corresponding, non-luminous signal device L1 to L3, where the fault or the fault causing the fault in the field of the cabinet 8th located.

alternative to the mentioned light-emitting diodes for the here shown Signaling devices L1 to L3 may also be used, for example corresponding incandescent lamps or a corresponding display, however, in addition to or as an alternative to the optically recognizable ones Means acoustic means are used.

at using (more than three) phase conductors with respective ones Zero or center conductor N / MP is a corresponding one Number of signal devices L1 to Ln in an analogous manner in the Integrate circuit arrangement.

In the 2 and 3 are excerpts circuit arrangements as variants of the 1 shown.

In the 2 are the signal devices L1 to L3 between the main switch 4 and the single-phase customer 6 with their terminals A1 in an analogous manner as in 1 shown in the cable assembly 5 involved, but in contrast here the respective terminals A2 of the Sig Naleinrichtungen L1 to L3 are interconnected.

Likewise, the signal devices L1 to L3 in this embodiment, in the same manner as in 1 shown connected to the phase conductors R, S and T and accordingly in the control cabinet 8th be arranged.

In the 3 a further possible embodiment is shown, wherein the signal devices L1 to Ln between the customer 6 and he drive device or the electric motor 1 in an analogous manner as previously described, are arranged or can be.

By the use of the invention in a mobile or ortveränderlichen Plant of the type mentioned is a total of an uncomplicated and above all short-term and therefore cost-effective remedy a fault in the electrical circuit by a corresponding authorized person possible without, for example, by an unauthorized intervention more and more damage or accidents arise.

1

Electric motor; driving means

1.1

Motor protection switch

2

casing

3

Voltage source; E port

4

main switch

5

Cable assembly; Multi-conductor cable

6

Single-phase Customer (pump)

7

Phase sequence relay

8th

switch cabinet

L1 ... Ln

signaling device

A1

first connection

A2

second connection

R

phase conductor

S

phase conductor

T

phase conductor

U

tension

N

Neutral

MP

Neutral conductor

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 2832113 A1 [0007]

Claims (9)

Circuit arrangement for phase control of the phase conductors of an (electrical) cable arrangement, comprising a control cabinet with a voltage source, at least one arranged in a mobile or ortveränderlichen system electric motor as drive means, a number of arranged in the cable arrangement phase conductors for the passage of an electrical voltage from the voltage source to the Electric motor and a neutral / neutral conductor, characterized in that the phase conductors (R; S; T) of the cable assembly ( 5 ) between the voltage source ( 3 ) and the drive device ( 1 ) are electrically connected to signal devices (L1 to Ln) for indicating the voltage (U) at each phase conductor (R; S; T) or for indicating a failure of the voltage (U) at at least one of the phase conductors (R; S; T) , Circuit arrangement according to Claim 1, characterized in that the phase conductors (R; S; T) between the voltage source (R; 3 ) and designed as a separation point main switch ( 4 ) are electrically connected to one of the signal devices (L1 to Ln). Circuit arrangement according to Claim 1, characterized in that the signal devices (L1 to Ln) between the main switch ( 4 ) and a second, single-phase consumer ( 6 ) in each case one of the phase conductors (R; S; T) are involved. Circuit arrangement according to Claim 1, characterized in that the signal devices (L1 to Ln) between the second pickup ( 6 ) and the drive device ( 1 ) in each case one of the phase conductors (R; S; T) are involved. Circuit arrangement according to one of the claims 1 to 4, characterized in that the signal means (L1 to Ln) einphasig ausgebil det and on the one hand at its second terminal (A2) are electrically connected to each other, while on the other hand the connection (L1-A1) with the phase conductor (R), the connection (L2-A1) with the phase conductor (S) and the terminal (L3-A1) with the phase conductor (T) connected is. Circuit arrangement according to one of the claims 1 to 4, characterized in that the signal means (L1 to Ln) with their first terminal (A1) on the one hand in each case with a the conductors (R, S and T) are connected while the other second terminals (A2) with each other and with the neutral / neutral conductor (N; MP) are connected accordingly. Circuit arrangement according to one of claims 1 to 6, characterized in that the signal devices (L1 to Ln) combined as a group and at a correspondingly visible position on the control cabinet ( 8th ) are arranged. Circuit arrangement according to one of the claims 1 to 7, characterized in that the signal means (L1 to Ln) as lamps, light-emitting diodes, display or the like visible Display device are formed. Circuit arrangement according to one of the claims 1 to 8, characterized in that the signal means (L1 to Ln) visually or acoustically or optically and acoustically recognizable are formed.