CN2258992Y - Multiphase installation type rectification ac voltage meter - Google Patents

Abstract

The utility model provides a multiphase installation type rectification AC voltage meter, which comprises a meter case, a voltage reduction and current dividing circuit, a light current transfer switch circuit, and a rectification voltmeter machine core which are fixed in the meter case. The utility model is characterized in that a wiring terminal is connected to the light current transfer switch circuit through the voltage reduction and current dividing circuit, and the connection of the rectification voltmeter machine core and the wiring terminal is controlled by the light current transfer switch circuit. The utility model has multiple purposes, and the connection of the rectification voltmeter machine core and the wiring terminal is realized by switching the light current transfer switch circuit. The utility model has the functions of line-to-line voltage measurement, same voltage measurement, dislocation wire discrimination, wire break discrimination, etc. The utility model meets the IEC international standard, and has the advantages of compact structure, high accuracy, and strong practicability. The utility model is an ideal multiphase AC voltage meter.

Description

Heterogeneous installing type rectification is an A.C. voltmeter

It is A.C. voltmeter that the utility model provides a kind of heterogeneous installing type rectification, belongs to electrical measurement indicating instrument field.

At present, installing type rectification both at home and abroad is an A.C. voltmeter, all belongs to single-phase or two-phase alternating current pressure table.Measure three-phase voltage between lines in the phase three-wire three Alternating Current Power Supply network, adopt a two-phase alternating current pressure table and an outer attached forceful electric power change-over switch to finish.Measure in the three-phase and four-line Alternating Current Power Supply network and reach voltage between phases between triple-phase line, adopt three single-phase and a two-phase alternating current pressure table and outer attached forceful electric power change-over switches.Chinese for another example utility model patent: combined multifunctional mounting instrument, application number: 95233117, be from angle design multi-functional, combination, in a watchcase, with the seven moving seven moving disconnected light current change-over switches of closing, realize switching indication three-phase alternating current voltage between lines and voltage between phases, three-phase alternating current and (nothing) merit power meter being arranged, can normally indicate the two-phase voltage between lines, switch between all the other lines of indication or voltage between phases, defective is that volume limits multiple measurement polyphase ac voltage to be restricted, and does not adopt contrast to judge the function of faults such as power supply broken string, wrong line.

The purpose of this utility model provides a kind of compact conformation, wiring heterogeneous installing type rectification simple, multiple functional, that adopt faults such as contrasting judgement power supply broken string, wrong line is an A.C. voltmeter.

The purpose of this utility model is achieved in that

Heterogeneous installing type rectification is that A.C. voltmeter comprises a watchcase, watchcase is provided with connection terminal, the watchcase internal fixation has the phase sequence indicating circuit that links to each other with connection terminal, being provided with step-down and divided circuit, light current switching switch circuit and rectification in addition is the voltage table movement, connection terminal connects the light current switching switch circuit through step-down and divided circuit, and is connecting of voltage table movement by its control with rectification.

Described heterogeneous installing type rectification is an A.C. voltmeter, and the light current switching switch circuit is by two two conversions, the two moving two moving disconnected mutual reset switch S of interlocking that close ₁, S ₂Form switch S ₂The rectification of output termination be voltage table movement V, step-down and divided circuit are by dropping resistor R _1～6With shunt resistance Rf _1～3Form, wherein dropping resistor R _1～6Be serially connected between connection terminal and the light current switching switch circuit shunt resistance Rf respectively _1～3Be attempted by between the phase line.

Described heterogeneous installing type rectification is an A.C. voltmeter, and the light current switching switch circuit can be by two three conversions, the three moving three moving disconnected mutual reset switch S of interlocking that close ₁, S ₂And one two conversion two moving two moving disconnected self-locking self-resetting switch S that close ₀Form, and switch S ₀Output terminal be that voltage table movement V connects with rectification, the light current switching switch circuit also can be by two three conversions, the three moving three moving disconnected mutual reset switch S of interlocking that close ₁And S ₂Form, and switch S ₂Output terminal and rectification be voltage table movement V ₁, V ₂Connect, its step-down and divided circuit are by dropping resistor R _1～10With shunt resistance Rf _1～6Form, wherein dropping resistor R _1～10Be serially connected in respectively terminals in and the light current switching switch circuit between, shunt resistance Rf _1～3Be attempted by between the phase line shunt resistance Rf _4～6Be attempted by between the phase line and the neutral line.

Described heterogeneous installing type rectification is an A.C. voltmeter, and the light current switching switch circuit is by two conversions, the two moving two moving disconnected self-locking self-resetting switch S that close _1～3Form, and switch S _1～3Output terminal be voltage table movement V with rectification respectively _1～3Connect, step-down and divided circuit are by dropping resistor R _1～12With shunt resistance Rf _1～6Form, wherein dropping resistor R _1～12Be serially connected between connection terminal and the light current switching switch circuit shunt resistance Rf respectively _1～3Be attempted by between the phase line shunt resistance Rf _4～6Be attempted by between the phase line and the neutral line.

The purpose of this utility model also can realize like this:

A kind of heterogeneous installing type rectification is an A.C. voltmeter, comprises a watchcase, and watchcase is provided with connection terminal L _1～3, it is voltage table movement V that the watchcase internal fixation has step-down and divided circuit and three rectifications _1～3, step-down and divided circuit are by dropping resistor R _1～6With shunt resistance Rf _1～3Form, rectification is voltage table movement V _1～3Be connected on respectively between two phase lines, its two ends respectively and meet shunt resistance Rf _1～3, dropping resistor R _1～6Being serially connected in connection terminal and rectification respectively is voltage table movement V _1～3Between.

The purpose of this utility model can also realize like this:

A kind of heterogeneous installing type rectification is an A.C. voltmeter, comprises a watchcase, and watchcase is provided with connection terminal L _1～3, N, it is voltage table movement V that the watchcase internal fixation has step-down and divided circuit and three rectifications _1～3, step-down and divided circuit are by dropping resistor R _1～6With shunt resistance Rf _1～3Form, three rectifications are voltage table movement V _1～3Be connected on respectively between the phase line and the neutral line, its two ends respectively and meet shunt resistance Rf _1～3, dropping resistor R _1～6Being serially connected in connection terminal and rectification respectively is voltage table movement V _1～3Between.

The utility model compared with prior art, by the light current switching switch circuit to switch rectification be the voltage table movement with connection terminal connect the realization a-table-multi-purpose, have between slotted line or functions such as voltage between phases, the wrong line broken string of differentiation, compact conformation, the precision height, practical.

Fig. 1 is a principle of work block diagram of the present utility model;

Fig. 2 is the circuit diagram of the utility model phase three-wire three A.C. voltmeter that to adopt a rectification be the voltage table movement;

Fig. 3 is the circuit diagram of the utility model three-phase and four-line A.C. voltmeter that to adopt a rectification be the voltage table movement;

Fig. 4 is the circuit diagram of the utility model three-phase and four-line A.C. voltmeter that to adopt two rectifications be the voltage table movement;

Fig. 5 is the circuit diagram of the utility model three-phase and four-line A.C. voltmeter that to adopt three rectifications be the voltage table movement;

Fig. 6 is that three rectifications of the utility model employing are the circuit diagram that the voltage table movement does not have the phase three-wire three A.C. voltmeter of light current switching switch circuit;

Fig. 7 is that three rectifications of the utility model employing are the circuit diagram that the voltage table movement does not have the three-phase and four-line A.C. voltmeter of light current switching switch circuit;

The utility model is described in further detail below in conjunction with accompanying drawing:

Embodiment 1 is for adopting the phase three-wire three A.C. voltmeter that rectification is the voltage table movement, and the light current switching switch circuit is by two two conversions, the two moving two moving disconnected mutual reset switch S of interlocking that close ₁, S ₂Form dropping resistor R ₁, R ₂Be serially connected in connection terminal L respectively ₁With switch S ₁Moving disconnecting point 2, normally opened contact 3 between, dropping resistor R ₃, R ₄Be serially connected in connection terminal L respectively ₂With switch S ₁Moving disconnecting point 4, switch S ₂Normally opened contact 1 between, dropping resistor R ₅, R ₆Be serially connected in connection terminal L respectively ₃With switch S ₁Normally opened contact 1, switch S ₂Normally opened contact 3 between, shunt resistance Rf _1～3Be attempted by between the phase line switch S respectively ₁The other end of moving disconnecting point 2, normally opened contact 1 connect switch S after joining ₂Moving disconnecting point 2, switch S ₁The other end of normally opened contact 3, moving disconnecting point 4 connect switch S after joining ₂Moving disconnecting point 4, switch S ₂Normally opened contact 1, the other end of moving disconnecting point 2 join afterwards and switch S ₂The other end of normally opened contact 3, moving disconnecting point 4 to connect rectification respectively after joining be voltage table movement V.Switching rectification by the light current change-over switch is the annexation of voltage table movement and connection terminal, realizes measuring the phase three-wire three alternating voltage.

Embodiment 2 is for adopting the three-phase and four-line A.C. voltmeter that rectification is the voltage table movement, and the light current switching switch circuit can be by two three conversions, the three moving three moving disconnected mutual reset switch S of interlocking that close ₁, S ₂And one two conversion two moving two moving disconnected self-locking self-resetting switch S that close ₀Form, wherein dropping resistor R _1～6, shunt resistance Rf _1～3With connection terminal L _1～3And switch S ₁, S ₂Connection with embodiment 1, and dropping resistor R _7～9Be serially connected in connection terminal L respectively _1～3With switch S ₁Normally opened contact 5, S ₁Moving disconnecting point 6, S ₂Normally opened contact 5 between, shunt resistance Rf _4～6Be attempted by between the phase line and the neutral line switch S respectively ₁The other end of normally opened contact 5, moving disconnecting point 6 connect switch S after joining ₂Moving disconnecting point 6, switch S ₂Normally opened contact 1, the other end and the switch S of moving disconnecting point 2 ₂The other end of normally opened contact 3, moving disconnecting point 4 connect switch S respectively after joining ₀Moving disconnecting point 2, moving disconnecting point 4, switch S ₁The other end of moving disconnecting point 6 through switch S ₂Moving disconnecting point 6 and switch S ₂Normally opened contact 5 join after, through switch S ₀Normally opened contact 3 connect the input end that rectification is voltage table movement V after joining, rectification is that another input end of voltage table movement V connects switch S respectively ₀Normally opened contact 1, normally opened contact 2, switch S ₀The other end of normally opened contact 1 through dropping resistor R ₁₀Meet connection terminal N.Switching rectification by the light current change-over switch is the annexation of voltage table movement and connection terminal, realizes measuring the three-phase and four-line alternating voltage.

Embodiment 3 is for adopting two three-phase and four-line A.C. voltmeters that rectification is the voltage table movement, just with switch S ₀Four output terminals to connect two rectifications respectively be voltage table movement V ₁, V ₂, all the other are with embodiment 2.

Embodiment 4 is for adopting three three-phase and four-line A.C. voltmeters that rectification is the voltage table movement, and the light current switching switch circuit is by two conversions, the two moving two moving disconnected self-locking self-resetting switch S that close _1～3Form dropping resistor R _1～3Be serially connected in connection terminal L respectively ₁With switch S ₁Moving disconnecting point 2, normally opened contact 1 and switch S ₃Moving disconnecting point 4 between, dropping resistor R _4～6Be serially connected in connection terminal L respectively ₂With switch S ₁Moving disconnecting point 4 and switch S ₂Normally opened contact 1, moving disconnecting point 2 between, dropping resistor R _7～9Be serially connected in connection terminal L respectively ₃With switch S ₂Moving disconnecting point 4, switch S ₃Normally opened contact 1 and moving disconnecting point 2 between, dropping resistor R _10～12Be serially connected in connection terminal N and switch S respectively ₁Normally opened contact 3, switch S ₂Normally opened contact 3 and switch S ₃Normally opened contact 3 between, shunt resistance Rf _1～3Be attempted by between the phase line shunt resistance Rf respectively _4～6Be attempted by respectively between the phase line and the neutral line, and switch S _1～3Normally opened contact 1, moving disconnecting point 2 and normally opened contact 3, move disconnecting point 4 and join respectively after, connecing rectification is voltage table movement V _1～3Input end, realize to measure the three-phase and four-line alternating voltage.

Embodiment 5 is the phase three-wire three A.C. voltmeter that the voltage table movement does not have the light current switching switch circuit for adopting three rectifications, and step-down and divided circuit are by dropping resistor R _1～6With shunt resistance Rf _1～3Form, rectification is voltage table movement V _1～3Be connected on respectively between two phase lines, its two ends respectively and meet shunt resistance Rf _1～3, dropping resistor R _1～6Be serially connected in connection terminal L respectively _1～3With rectification be voltage table movement V _1～3Between, be voltage table movement V directly by rectification _1～3Measure indication phase three-wire three alternating voltage respectively.

Embodiment 6 is the three-phase and four-line A.C. voltmeter that the voltage table movement does not have the light current switching switch circuit for adopting three rectifications, and step-down and divided circuit are by dropping resistor R _1～6With shunt resistance Rf _1～3Form, three rectifications are voltage table movement V _1～3Be connected on respectively between the phase line and the neutral line, its two ends respectively and meet shunt resistance Rf _1～3, dropping resistor R _1～6Be serially connected in connection terminal L respectively _1～3, N and rectification be voltage table movement V _1～3Between, be voltage table movement V directly by rectification _1～3Measure indication three-phase and four-line alternating voltage respectively.

Claims (8)

1, a kind of heterogeneous installing type rectification is an A.C. voltmeter, comprise a watchcase, watchcase is provided with connection terminal, it is the voltage table movement that the watchcase internal fixation has step-down and divided circuit, light current switching switch circuit and rectification, it is characterized in that: connection terminal connects the light current switching switch circuit through step-down and divided circuit, and is the voltage table movement and the connecting of connection terminal by its control rectification.

2, heterogeneous installing type rectification as claimed in claim 1 is an A.C. voltmeter, and it is characterized in that: step-down and divided circuit are by dropping resistor R _1～6With shunt resistance Rf _1～3Form, wherein shunt resistance Rf _1～3Be attempted by between the phase line dropping resistor R _1～6Be serially connected in respectively between connection terminal and the light current switching switch circuit, the light current switching switch circuit is by two two conversions, the two moving two moving disconnected mutual reset switch S of interlocking that close ₁, S ₂Form switch S ₂The rectification of output termination be voltage table movement V.

3, heterogeneous installing type rectification as claimed in claim 1 is an A.C. voltmeter, it is characterized in that: the light current switching switch circuit is by two three conversions, the three moving three moving disconnected mutual reset switch S of interlocking that close ₁, S ₂And one two conversion two moving two moving disconnected self-locking self-resetting switch S that close ₀Form, and switch S ₀Output terminal be that voltage table movement V connects with rectification.

4, heterogeneous installing type rectification as claimed in claim 1 is an A.C. voltmeter, it is characterized in that: the light current switching switch circuit is by two three conversions, the three moving three moving disconnected mutual reset switch S of interlocking that close ₁And S ₂Form, and switch S ₂Output terminal and rectification be voltage table movement V ₁, V ₂Connect.

5, be A.C. voltmeter as claim 1 or 3 or 4 described heterogeneous installing type rectifications, it is characterized in that: the step-down divided circuit is by dropping resistor R _1～10With shunt resistance Rf _1～6Form, wherein shunt resistance Rf _1～3Be attempted by in twos between the phase line shunt resistance Rf _4～6Be attempted by between the phase line and the neutral line dropping resistor R _1～10Be serially connected in respectively between connection terminal and the light current switching switch circuit.

6, heterogeneous installing type rectification as claimed in claim 1 is an A.C. voltmeter, and it is characterized in that: step-down and divided circuit are by dropping resistor R _1～12With shunt resistance Rf _1～6Form, wherein shunt resistance Rf _1～3Be attempted by between two phase lines shunt resistance Rf _4～6Be attempted by between the phase line and the neutral line dropping resistor R _1～12Be serially connected in respectively between connection terminal and the light current switching switch circuit, the light current switching switch circuit is by two conversions, the two moving two moving disconnected self-locking self-resetting switch S that close _1～3Form, and switch S _1～3Output terminal be voltage table movement V with rectification respectively _1～3Connect.

7, a kind of heterogeneous installing type rectification is an A.C. voltmeter, comprises a watchcase, and watchcase is provided with connection terminal, and it is the voltage table movement that the watchcase internal fixation has step-down and divided circuit and rectification, it is characterized in that: step-down and divided circuit are by dropping resistor R _1～6With shunt resistance Rf _1～3Form, three rectifications are voltage table movement V _1～3Be connected on respectively between two phase lines, its two ends respectively and meet shunt resistance Rf _1～3, dropping resistor R _1～6Being serially connected in connection terminal and rectification respectively is voltage table movement V _1～3Between.

8, a kind of heterogeneous installing type rectification is an A.C. voltmeter, comprises a watchcase, and watchcase is provided with connection terminal, and it is the voltage table movement that the watchcase internal fixation has step-down and divided circuit and rectification, it is characterized in that: step-down and divided circuit are by dropping resistor R _1～6With shunt resistance Rf _1～3Form, three rectifications are voltage table movement V _1～3Be connected on respectively between the phase line and the neutral line, its two ends respectively and meet shunt resistance Rf _1～3, dropping resistor R _1～6Being serially connected in connection terminal and rectification respectively is voltage table movement V _1～3Between.

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