JPH0249321A - Switch device - Google Patents

Abstract

PURPOSE:To know if the condition is ON, OFF, or trip and enhance the reliability in indicating abnormal condition by furnishing an ON indicating means, OFF indicating means, and trip indicating means. CONSTITUTION:In ON condition where an ON operating switch 11 is turned on and also in the OFF condition where an OFF operating switch 9 is put on, an all-wave sensor circuit 12 does not sense all-wave current, so that a triode AC switch 15 is out of continuity. In this condition, either an ON indicating LED 4 or an OFF indicating LED 7 is lit up. If in the ON condition an overcurrent or shortcircuiting is generated between a main circuit power supply terminal 28 and a main circuit load terminal 29, a shutoff switch 31 is opened by a tripping mechanism, not illustrated, and COM terminal of a microswitch B24A is connected with an NC terminal. This causes flowing of all-wave current through the all-wave sensor circuit 12, and the triode AC switch 15 is put into continuity. Accordingly a trip indicating LED 14 is lit up, while the ON indicating LED 4 and OFF indicating LED 7 remain extinguished.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a switch device used in a power distribution system control system for lighting equipment and the like.

In particular, the present invention relates to a remote control switch device for remotely controlling circuit breakers and the like.

[Prior Art] The configuration of a conventional example will be described with reference to FIGS. 6 and 7. FIG. 6 is a wiring diagram showing a conventional switch device, and FIG. 7 is a perspective view showing the conventional switch device.

In FIG. 6, (1) is a switch device composed of (2) to (11).

Here, (2) is the first terminal, (3) is the second terminal, (
4) and (5> constitute ON display means, and in this conventional example, (4) is an ON display LED whose cathode terminal is connected to the first terminal (2), and (5) is an ON display LED whose one end is connected to the first terminal (2). For L
bias resistors (6) and (7) connected to the anode terminal of the ED (4) and the other end connected to the second terminal (3);
) has an OFF indicating means, in this conventional example, (6) has a bias resistor whose one end is connected to the first terminal (2), and (7) has an anode terminal connected to the bias resistor (6) an OFF display LED connected to the end and whose cathode terminal is connected to the second terminal (3); (8) is an OFF control diode whose cathode terminal is connected to the first terminal (2);
(9) has one terminal that is an OFF control diode (8
) is connected to the anode terminal of the OFF operation switch and the other terminal is connected to the second terminal (3), and (10) is the ON operation switch whose anode terminal is connected to the first terminal (2).
The control diode (11) is an ON operation switch whose one terminal is connected to the cathode terminal of the ON control diode (10) and the other terminal is connected to the second terminal (3).

Next, the operation of the above-mentioned conventional example will be explained with reference to FIGS. 8 to 10. Figures 8, 9 and 10 are
FIG. 2 is a wiring diagram showing ON, OFF, and TRIP states of a power distribution system control system using a conventional switch device.

In Figures 8 to 10, (20) is replaced by (21) to (
31).

Here, (21) is the first terminal, (22) is the fourth terminal, (23) is the O N 1III fit diode whose cathode terminal is connected to the third terminal (21), (2
4) The COM (common) terminal is an ON control diode (
23) Microswitch A connected to the anode terminal of
, (25) is an OFF control diode whose anode terminal is connected to the third terminal (21), (26) is a microswitch B whose C0M terminal is connected to the cathode terminal of the OFF control diode (25), ( 27) is an operating terminal whose one end is connected to the NC (normally closed) terminal of microswitch A (24) and the NC terminal of microswitch B (26), and the other end is connected to the fourth terminal (22). The drive coil, (28) is a main circuit power supply terminal connected to a power supply (not shown), (29) is a main circuit load terminal connected to a load (not shown), and (30) is a main circuit power supply terminal ( fuse connected to (28), (31)
is a cutoff switch having one terminal connected to the other end of the fuse (30) and the other terminal connected to the main circuit load terminal (29). In addition, micro switch A (24
) and microswitch B (26) have a No (normally open) terminal that is not connected to anything.

Further, (40) is the first terminal (2) and the third terminal (21).
), the transmission line (41) is the second terminal (3
) and the fourth terminal (22), the transmission line (4
2) is a power transformer whose primary side is connected to an AC 100V power source (not shown) and whose secondary side is inserted into the transmission line (40). Note that the voltage on the secondary side is AC24■.

First, the operation in the ON state will be explained. The C0M terminal and NC terminal of microswitch A (24) are connected, and the C0M terminal and NC terminal of microswitch B (26) are connected.
When the ON operation switch (11) is closed in the OFF state where the terminal is connected and the cutoff switch (31) is open, the secondary side of the power transformer (42) - the transmission line (40> → the first Terminal (2) → ON control diode <
10) →○N operation switch (11) → second terminal (3)
→ Transmission line (41) → Fourth terminal (22) → Operating drive coil (27) → Micro switch A (24) → ON control diode (23) → Third terminal (21) → Transmission line (40 ) → A closed loop (2) is formed from the secondary side of the power transformer (42), and a large current flows through this closed loop (2).

Therefore, as shown in FIG.
27) closes the cutoff switch (31), and the microswitch A (24) connects the C0M terminal to the N terminal.

The connection can be switched to the terminal and the micro switch B
(26) is switched to connect the C0M terminal and the NC terminal.

Then, the ON operation switch (11) is opened,
Secondary side of power transformer (42) → transmission line (40) → third
terminal (21) → OFF control diode (25) - micro switch B (26) → operating drive coil (27)
) -4th terminal 22) → Transmission! ! (41) → Second terminal (3) → Bias resistor (5) → ON display L E
A closed loop (2) consisting of D (4) -> first terminal (2) -> transmission line (40) -> secondary side of the power transformer (42) is constructed, and a small current flows through this closed loop (2). Therefore, the ON display LED (4) of the switch device (1) lights up. This state is the ON state. Note that at this time, the operating drive coil 27) does not operate because a small current is flowing through it.

Second, the operation in the OFF state will be explained. O mentioned above
In the N state, when the OFF operation switch (9) is closed, the secondary side of the power transformer (42) → the transmission line (40)
→ Third terminal (21) → OFF control diode (25
) → Micro switch B (26) → Operating drive coil (27) → Fourth terminal (22) → Transmission line <41) → Second
terminal (3) → OFF operation switch (9) → OFF control diode (8> → first terminal (2) → transmission line (40
) → Closed loop consisting of the secondary side of the power transformer (42) ■
is configured, and a large current flows through this closed loop (■). Therefore, as shown in FIG.
The cutoff switch (31) is opened, the microswitch A (24) is switched to connect the C0M terminal and the NC terminal, and the microswitch B (26) is switched to the C0
The connection can be switched between the M terminal and the NC terminal.

Then, the OFF operation switch (9) is opened,
Secondary side of power transformer (42) → transmission line (40) → first
terminal (2) → bias resistor (6) → OFF display LE
D (7) → Second terminal (3) → Transmission line (41) → Fourth terminal 22) → Operating drive coil (27) → Micro switch A (24) → ON control diode (23) →
Third terminal (21) → Transmission line (40) → Power transformer (
A leap loop (2) is formed from the secondary side of 42), and a small current flows through this closed loop (2). Therefore, the OFF display LED (7) of the switch device (1>) lights up.

Third, the operation in the TRIP state will be explained.

In the ONf: state described above, the main circuit power supply terminal (28
) and the main circuit load terminal (29), the disconnection switch (31) is opened by a trip mechanism (not shown), as shown in Figure 10, and the microswitch B (2B )'s C0M terminal is N.

Connected to the terminal. Then, there will be no closed loop for current to flow anywhere. Therefore, the ON display LED
(4) and the OFF display LED (7) are both turned off. This state is the TRIP state.

[Problems to be Solved by the Invention] In the conventional switch device as described above, even if the main circuit of the remote control breaker is in a TRIP state, a disconnection state, or a no-voltage state, the ON display LED and the
Since both of the F display LEDs are off, there is a problem in that it is not possible to determine whether the TRIP condition is bad, the wire is disconnected, or the no-voltage condition is bad.

This invention was made in order to solve the above-mentioned problems, and it is possible to turn ON/OFF and TRI the remote control breaker etc.
The present invention aims to provide a switch device that can clearly identify the P state and improve the reliability of displaying an abnormal state called TRIP.

[Means for Solving the Problems] A switch device according to the present invention includes the following means.

(i) ON display means that lights up based on the ON operation switch.

<ii), OF lights up based on the OFF operation switch
F display means.

(iii) detection means for detecting a trip condition;

(iv) L-lip display means that lights up based on the detection output of the detection means.

[Function] In the present invention, the trip state is detected by the detection means, and the trip display means is turned on based on this detection output.

[Example] The configuration of an example will be described with reference to FIGS. 1 and 2. FIG. 1 is a wiring diagram showing an embodiment of the present invention, and FIG. 2 is a perspective view of an embodiment of the invention.
) is exactly the same as that of the conventional device described above.

In FIG. 1, (IA) is (2) to <11), (1
2), (13), (14), (15), (16) and (
17).

Here, (12) is a detection means, and in this embodiment, a full-wave detection circuit, (13) to (17) connected between the first terminal (2) and the second terminal (3). ) constitutes a trip indicating means, in this embodiment, (13) is a bias resistor whose one end is connected to the first terminal (2), and (14) is an anode terminal connected to the other end of the bias resistor (13). One terminal of the trip display LED (15) is connected to the cathode terminal of the trip display LED (14),
TRIAC (TRIAC) whose gate terminal is connected to the full wave detection circuit (12) and the other terminal is connected to the second terminal (3), one end of (16) is connected to the first terminal (2) The bias resistor (17) is connected to the bias resistor (5) and one end of the bias resistor (6), and the cathode terminal of (17) is the cathode terminal of the trip display LED (14) and the - side of the triac (15). is a diode connected to the terminal of the bias resistor (16) and whose anode terminal is connected to the other end of the bias resistor (16).

Note that the ON display LED (4) has its cathode terminal connected to the other end of the bias resistor (5), and its anode terminal connected to the second terminal (3).

Next, the operation of the above embodiment will be explained with reference to FIGS. 3 to 5. Figures 3, 4 and 5111 are
It is a wiring diagram showing ON, OFF, and TRIP states of the power distribution system control system using one embodiment of the present invention, and is a wiring diagram showing the ON, OFF, and TRIP states of the power distribution system control system using one embodiment of the present invention.
), (27) to (31) and (40) to (42) are the eighth
This is exactly the same as the distribution system control system shown in FIGS.

In Figures 3 to 5, (20Δ) is (21) to (2
3), (24Δ>, (25), <26Δ), (27) ~
There is a remote control breaker consisting of (31).

Here, (24Δ) is microswitch B, (26^) whose C0M terminal is connected to the anode terminal of the ON control diode (23) and whose NC terminal is connected to one end of the operation drive coil (27). The C0M terminal is connected to the cathode terminal of the OFF control diode (25), and the No.
This is a microswitch A whose terminal is connected to one end of an operating drive coil (27). In addition, micro switch B (
24^) has a No terminal that is not connected anywhere, and microswitch A (26^) has an NC terminal that is also not connected anywhere.

Of course, although not shown, the remote control breaker (20^) also includes mechanical components such as a polarized electromagnet, a manual handle, and a link.

First, the operation in ON and OFF states will be explained.

As shown in Figures 3 and 4, only half-wave current flows in these states, meaning that the full-wave detection circuit (
Since the triac (12) does not detect a full-wave current (alternating current), the triac (15) is non-conducting (OFF).

Therefore, the ON and OFF state operations are the same as those described above.
Since the operation is almost the same as that shown in FIG. 9 and FIG. 9, the explanation will be omitted. However, the ON display LED (4) and the OFF display LED (4)
A bias resistor (16) will be newly inserted into the closed loop in which the display LED (7'') lights up.

Next, the operation in the TRIP state will be explained. ON mentioned above
If an overcurrent or short circuit occurs between the main circuit power supply terminal (28) and the main circuit load terminal (29) in the
As shown in the figure, the cutoff switch (31) is opened by a trip mechanism (not shown), and the microswitch B (2) is opened.
The C0M terminal of 4^) is connected to the NC terminal.

Then, the secondary side of the power transformer (42) → the transmission line (
40) → first terminal (2) → full wave detection circuit (12) → second terminal (3) → transmission line (41) → fourth terminal (22)
→ Operation drive coil (27) → Micro switch B (2
4^) → ON control diode (23) → third terminal (
21) → Transmission line (40) → Closed loop ■ consisting of the secondary side of the power transformer (42) and the secondary side of the power transformer (42) → Transmission line (40) → Third terminal (21) → OFF control Diode (25) → Micro switch A (26^)
→ Operation drive coil (27) → Fourth terminal (22) → Transmission line (41) → Second terminal (3) → Full wave detection circuit (12
) → first terminal (2) → transmission line (40) → closed loop consisting of the secondary side of the power transformer (42), and the full-wave detection circuit (12) has a full-wave current (AC). flows.

Therefore, the full-wave detection circuit (12) has a triac (
15) conducts (ON), so the power transformer (42
) - Secondary side of transmission line (40) -> first terminal (2) - bias resistor (13) -> TRIFF 1 display L E D (14
) → Triac (15) - Second terminal (3) → Transmission line (41) → Fourth terminal (22) → Operating drive coil (2
7) → Micro switch B (24A) → ON control diode (23) → Third terminal (21) → Transmission line (40
) → A closed loop (2) is formed from the power supply 1 to the secondary side of the lance (42), and a small current flows through this closed loop (2). And the trip display LED of the switch device (18)
(14) will be lit. This state is TRI
It is in P state.

Note that at this time, the ON display LED (4) and the OFF display LED (7) do not light up because no current flows.

[Effects of the Invention] As explained above, the present invention includes an ON display means that lights up based on an ON operation switch, an OFF display means that lights up based on an OFF operation switch, a detection means that detects a trip state, and the above-mentioned. Since it is equipped with a trip display means that lights up based on the detection output of the detection means, the ON
, OFF and TRIP states can be clearly identified, and the reliability of displaying the abnormal state of TRIP can be improved.

[Brief explanation of the drawing]

Fig. 1 is a wiring diagram showing an embodiment of the present invention, Fig. 2 is a perspective view showing an embodiment of the invention, Figs. 3, 4, and 5.
Figure 6 is a wiring diagram showing ON, OFF and TRIP states of a power distribution system control system using an embodiment of the present invention.
The figure is a wiring diagram showing a conventional switch device, FIG. 7 is a perspective view showing a conventional switch device, FIGS. 8, 9, and 10.
The figure is a wiring diagram showing ON, OFF, and TRIP states of a power distribution system control system using a conventional switch device. In the figure, (1^) ... switch device, ... LED for ON display, LED for 10FF display, ... OFF operation switch, ... ON operation switch, ... full wave detection circuit, ... Trip display LED, ... TRIAC. In each figure, the same reference numerals are the same or correspond to the same parts.Patent Application No. 198034 Name of the invention Switch device Amendment person case Case relationship Patent applicant address Marunouchi plate, Chiyoda-ku, Tokyo Chome 2-3 Name (601) Mitsubishi Electric Corporation Representative Moriya Shiki

Claims (1)

[Claims] ON display means that lights up based on the ON operation switch, O
OFF display means that lights up based on the FF operation switch;
A switch device comprising: a detection means for detecting a trip state; and a trip display means that lights up based on a detection output of the detection means.