JPS59215630A - Circuit for operating remote control type circuit breaker - 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 [Technical Field] The present invention relates to an operating circuit for a remote control type circuit breaker.

[Background technology]

Far side of conventional remote controlled circuit breaker #
The action is performed as usual. That is, as shown in Fig. 11, the electromagnetic coil C of the bistable electromagnetic device that controls the opening and closing of the main circuit contact B of the circuit breaker A is equipped with a polarity changeover switch SW that is linked to the handle of the breaker, and a diode D□.
, D2 are connected to a remote control switch SW2 (one point of 'J sea, thyristor, transistor, etc.), and this is connected to the alternating current E. Close the on-contact 4' of the remote control element (consisting of f, 6, diode I), and connect the electromagnetic coil C through
Half-wave rectification flows in one direction K, which causes main circuit contact B
is driven on, and in conjunction with this, the polarity changeover switch SW
In the figure, when the off contact of the remote control switch sw is closed, half-wave rectification in the other direction is applied to the electromagnetic coil B through the diode D2, which turns off the main circuit contact B. -(Kirishiki Suisona SW
□ is switched to the on side (see Figure 2). Furthermore, the circuit breaker itself has a handle (not shown) that opens and closes the main circuit contacts B, and the main circuit can also be opened and closed directly by operating this handle.

By the way, this remote control type circuit can be used by controlling the power of a peak cut-on stem, etc., and if a certain amount of power is exceeded, a command from the system will be sent to the remote control switch S.
You can turn off W2 by turning off point 13.

However, these remote-controlled circuits and disconnectors have circular handles that can be turned on and off manually, so they can be turned off by remote control with a peak cut command.
Or, even if the main circuit is turned off by remote 11tlJ control when a machine malfunction occurs, the main circuit may be turned on again by the handle without anyone knowing. In this case, peak cutting becomes meaningless, and if the circuit is turned on again when it is automatically cut off in the event of an abnormality, an accident may occur, which is extremely dangerous.

Furthermore, it is necessary to have a system in place that is linked to mechanical equipment, so that when one machine starts or stops, another equipment is always turned on, so that you do not have to stop that equipment. When using a conventional remote-controlled circuit breaker, it may be turned off unexpectedly by operating the handle.

[Purpose of the invention]

Accordingly, it is an object of the present invention to provide an operating circuit for a remote-controlled circuit breaker in which control by a remote control switch can take precedence over handle control.

[Disclosure of the invention]

In this invention, instead of directly opening and closing the main contacts with the handle of the breaker, a switch contact is provided on the breaker, and the main contact is opened and closed by energizing the electromagnetic coil of a bistable electromagnet device, and the switch contact of the handle is connected to the main contact. Thus, priority is given to controlling the energization of the electromagnetic coil by the remote control switch. Normally, the main circuit can be opened and closed by operating the handle, but when the remote control switch is turned on, the main circuit is turned on or off preferentially by this switch, and the When the bundle is turned off or on, the main circuit stops working. Therefore, erroneous operations and accidents do not occur during the use of the peak cut system and the like.

A first embodiment of the invention is shown in FIGS. 1 to 8. 2 is a power supply side terminal connected to the main circuit, 31d is also a load side terminal, and 4 and 5 are remote control terminals. Between the terminals 2 and 3, for example, the terminals 2 to 5 have the same stranded wire 6 and the identification contact plate 7. Identification contact 8.
iiJ moving contact9. OJ moving contact JO, from copper #]J,
Short circuit - coil 13 of hinge 12. Copper stranded wire14. It reaches the terminal 3 via the bimetal 15. Here, the short-circuit sensor J2 operates as a -C planner J6 in response to a predetermined abnormal current, and the bimetallic sensor J6 operates in a -G curve (11r configuration) in response to a predetermined abnormal current.

Opening/closing/tri-knob configuration (M is trip linter 7° launch click) 8. Contact frame 19. First interlocking link 20.
, J2 interlocking link 2], and a bistable electromagnet device 22. Trip link] 7 is fixed @ 1t to 23
th support! Bimetal 15 and short circuit sensor 20
It rotates counterclockwise to the pushing gear 16 and is biased by the return spring 24 in the same direction as the elbow VC.

The launch link 18 is pivotally supported by a fixed shaft 25, and the hooking claw 26 at the tip faces the locking part 27 of the torsoge link J7,
Moreover, it is biased in the locking direction by the trip opening spring 28. The contact frame 19 is connected to the latch link [8] by a pin 29 at the 121M section.1.゛Top end (movable contactor by shaft 30 at section) 0 and 1st series, lh
l) Can be connected to link 20 and further above it at the 11β position! A spring 31 is interposed between the IjII contact JO and the contact pressure I'. The second interlocking link 21 is pivotally supported by a fixed shaft 32, and the second interlocking link 21 is supported by a shaft 33 at its lower end.
0, and Francia 3 of electromagnetic system @22 in the Hariyama part.
4 and a link 35, and a biasing spring 36 moves the second interlocking link 2J in the counterclockwise rotation (off direction) direction as shown in FIG.
;” It is gaining momentum. The bistable electromagnetic device 22 includes a pair of magnets 37 , 37 ′ and a coil 38 .
The plunger 34 is held in the upper and lower positions by 37' and 37', and the coil 38 is energized and driven in opposite directions by QC.

oIJ coil 38 (1) The operating circuit for controlling the tracing is as shown in Fig. 4 using the handle switch 39. ifi selector switch 40. Diode IJ1. IJ2. It consists of a remote control switch 4J and current currents υ and λE.・・・
It is installed at the upper end of the 17 unit body, and the 70-7 dollar 42 is fixed.
3 and protrudes from the upper surface of the C main body 1, a scene type IA contact plate 44 is provided at the lower end, and fixed contacts 45 and 46 are opposed to both ends thereof. The polarity changeover switch 40 and the diode D are arranged in the space 47 provided in the axial direction side of the second interlocking link 2j of the breaker main body 1 as shown in the stripe 3 (Fig. Q), and the second A pair of movable contact plates 49.
50 opens and closes with respect to a common fixed contact 51 kC.

Although a normal relay is used for the remote control switch 41,
It may also be a cyrisk, a transistor, etc. ``This circuit has a configuration that opens the circuit of the remote control switch 41 when the circuit breaker is turned off by the remote control switch 4'', and the normally open contact NO of the remote control switch 41 is connected to the diode D. A closing contact NC is connected to a movable contact plate 44 of the handle switch 39. In addition, the handle switch 39 and the polarity changeover switch 40
A diode D□, with polarity opposite to each other, is connected between the contacts of
D2 is connected, and the fixed contact plate (which serves as a common contact) of the polarity changeover switch 40 is connected to the coil 38 and connected to the AC power source E.

To explain the entire operation of this circuit, when there is no remote control by the remote tttlJ control switch 41, the normally closed contact NC of the remote control switch 4j is closed as shown in FIGS. 4 to 6. Therefore, in this case, the main circuit contacts (8, 9) can be turned on or off by switching the handle switch 39, respectively. That is, FIG.
ri When the handle switch 39 is switched to the diode D□ side from the state shown in Fig. 4, a positive half-wave rectified current flows through the coil 38, causing the plunger 34 to change from the upper (off position) to the lower (off position). (The operation of the 10 ijJ moving contacts associated with the plunger 34 will be described later.Plunger 3
4, the second interlocking link 21 rotates and the driver 48 moves downward, so that the polarity changeover switch 40 is switched from the state shown in FIG. 5 to the state shown in FIG. 3
Power to 8 is stopped. On the other hand, handle switch: 39
is turned off (turning it to the opposite side turns off the contacts 45 and 46 (Fig. 4), and this time the diode D2 side becomes conductive, so a half-wave rectified current of negative polarity is applied to the coil 38, The granger 34 operates in the opposite direction to that described above, and the drive element 48 moves accordingly, so the polarity changeover switch 40 returns to the state shown in Fig. 4.Next, the main circuit contacts (8, 9) are turned on and the remote When the control switch 4J is activated, the normally closed contact NC opens and the normally open contact NO closes as shown in FIG. operates from the lower to the upper, that is, in the direction of turning off the main circuit contacts (8, 9).Then, the polarity selector switch 40 is switched as shown in Fig. 8.In this case, the handle switch 39 is operated to the diode D1 side. 1- (Fig. 8), the normally closed contact NC of the remote control switch 41 is open, so the coil 3BVC
td is not energized and the plunger 34 does not operate. That is, the remote control switch 4/ri handle switch 39
Priority is given to

Next, the operation of this remote control type circuit breaker will be summarized. 1-Nawaji, the on state is the first
This is shown in Figure 0 (a). In this case, latte link 18
is latched to the trip link j7, the plunger 34 of the viewing magnet device 22 is lowered and held by the magnets 37, 37', and the movable contact 10 is therefore in contact with the fixed contact 8VC.

The off state is shown in FIG. 10(b)K. As above,
The latch link 18 is latched, and the plunger 34 is driven upward by the excitation of the coil 38 (7'C).
37, 37' I got 1 gap from VC. therefore.

The second interlocking link 2] rotates counterclockwise from the state shown in Fig. 1o (a), pulls the first interlocking link 20 to the right in Fig. 29 Rotate around the center of the firefly to open the pole.

Tri-knob state v > out 111i, 'ylt trip l-' Figure 1υ(C) (This is shown.
When the main circuit contacts (8, 9) are in the on state and an overcurrent flows through one pole, the self-light of the bimetal 5; ] When 7 is pressed dh, the latch link J8 is released yt, and the latch link 18 rotates. Therefore, the shaft 29 of the contact frame 9 moves toward the F direction, and the second interlocking link 2 ] t', I, plunger 34
The 1-time iiJ moving contact 9, which was held at 1, separates from the 1-multiple contact 8, and the electric circuit is broken. The centrifugation after the tri-knob is when the flancia 34 of the electromagnet device 22 is moved to the OFF position in its state 7J'', and the second interlocking link 21
The first latch link 1 is pulled up by the rotation of the second interlocking link 2o and the movement of the second interlocking link 2o.
8 rotates to the left, and the hook 26 is latched onto the hook 27 of the trip link 17.

A short circuit trip is shown in FIG. 10(d). That is, in the ON state, when a short final current flows through the electric circuit, the plunger] 6 of the short circuit sensor 12 is attracted.

As a result, the movable rod 16a is pushed out and the trip link 1
70F end is pushed and the trip link 7 rotates, so the launch link 18 is released and the movable contact 10 performs the opening operation as described above. However, the movable contact] 0 is the plunger before opening by link interlocking such as C, that is, at the exact same time as the plunger J6 operates] 6.1:5
The collar 16b of the extended forced opening rod is the town KJ) J contactor 1
0 and pull it to move the movable contact 9 to the fixed contact 8.
Separate from. In other words, just before the launch link 18 is tripped, the movable tentacle is moved around the shaft 29 as a fulcrum]0
The strange S contact pressure applying spring 31 is rotated in the direction of compressing it to perform an opening operation. The reset operation is the same as @.

In these trip operations, when the latch link 18 rotates, the display link 55 moves, the display link 56 rotates, and the trip display plate 57 moves to the 20th slow link 2.
A trip display is displayed on the top surface of an ON display plate 59 formed on the top surface of the display device 1 and exposed in the window 58.

In addition, 60 is an arc extinguishing device that extinguishes the arc that occurs when a short circuit occurs, and (i) is an IUr that detects Trinov operation.
Optional switch 62 is a detection port that connects one thread to the latch link 18.

With this configuration/thus, with this remote control circuit, the remote fBIJ control switch 4j has priority over the handle switch 39 in the operation circuit of the Bfr device, which prevents malfunctions.
'F' and accidents will not occur, and it can be applied to beak cant systems, etc.

An example of this 91S light v')ε1 engineering 2 is shown in FIG.

That is, in addition to this, the remote iti'l (l switch 41
’ to control the circuit to turn on the snow device 11, the first
Contrary to the embodiment described above, the normally open contact NO is connected to the diode drawer, and the movable contact plate 44 of the handle switch 39 is connected to the normally closed contact NC side to form a priority circuit. Therefore, other equipment can be safely turned on through remote iU control, and there is no chance of the breaker being turned off (malfunctioning) with the handle of the breaker. Others are the same as the first ability (example q).

〔Effect of the invention〕

As described above, according to the operation circuit of the remote control type circuit breaker of the present invention, it can be turned on and off with the handle switch in normal times, and remote ffl control can be performed in the event of an abnormality or emergency, and it has priority over remote control control. So,
When applied to a peak cuff system, etc., it has the effect of maintaining control reliability without causing malfunctions or accidents.

[Brief explanation of the drawing]

^↓Figure 1 is a perspective view of the circuit breaker according to the embodiment of this invention, Figure 2 is its center vertical cross-sectional view, Figure 3 is a thin cross-sectional view, Figure 4 is an operating circuit diagram, Figures 5 and 6 are circuit diagrams of the operating state when the handle switch is operated, and Figures 7 and 8 are circuit diagrams of the operating state when the remote control switch is operated. The figure is the operation circuit diagram of the second embodiment, the 11th figure is the operation @ composition of the breaker, and the 1st
FIG. 1 is a circuit diagram of the conventional O, and FIG. 12 is a circuit diagram of the B in the 1' state.

Claims (1)

[Scope of Claims] (J) An electromagnetic coil of a bistable electromagnet device built in the breaker body to open and close the main circuit contacts; A remote control type circuit breaker equipped with a breaker node having a switch contact for switching the breaker, and a remote control switch disposed outside the breaker body to open the switch circuit of the breaker and control the electromagnetic coil. Circuit breaker operating circuit. (2) The remote control switch controls the main circuit contact to turn off. The switch turns on the main circuit contact within the desired range (operating circuit for the remote control circuit breaker described in item 0).