CN213150616U - Switch device - Google Patents

Abstract

A switch device is characterized in that three or more groups of oppositely arranged wiring terminals are arranged in a shell, one group of wiring terminals are communicated through a conductive wire, switch contacts for communicating or disconnecting the same group of wiring terminals are arranged among the other groups of wiring terminals, a control button for controlling the on-off action of the switch contacts is arranged, and the control button is connected with and controls all the switch contacts to work simultaneously. The switching device can meet the use requirements of various circuit systems and electric equipment through the arrangement of a plurality of groups of wiring terminals, and has extremely wide application range; meanwhile, the on-off control of the phase line and the neutral line can be realized at the same time, and the continuous connection of the grounding protection line is kept, so that the power utilization safety is improved.

Description

Switch device

Technical Field

The utility model relates to a switching device that control circuit is on, disconnected.

Background

In order to control the operation of various electric devices, a switch device is usually required to be arranged on a connection circuit, and the on/off of the circuit is changed through the switch device so as to achieve the purpose of controlling the on/off of the electric devices. With the continuous innovation and development of electrical technology, the design of electrical systems and electrical devices matched with the electrical systems is more and more diversified. In 220V equipment and 380V low-power equipment such as lighting lamps and ventilators, the shunt circuit is often required to be matched with a corresponding switch for on-off control. Existing switches are typically single pole switches or double pole switches, which are only suitable for single or two wire insulation systems. When equipment used three-phase four-wire or three-phase five-wire system distribution system, the power supply cable core number of the last branch of 220V was three cores, and the power supply cable core number of the last branch of 380V was four cores, and the port number inside the existing single-pole switch or double-pole switch was not enough, resulted in the unable complete connection of switch both sides cable, distribution system was incomplete and can not play the guard action scheduling problem when leaking electricity, can not satisfy the power consumption safety requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can be applicable to multiple circuit system's switching device to satisfy multiple circuit system and consumer's use needs.

Switching device, including the casing, be provided with three groups or the binding post of above relative setting in the casing, wherein a set of binding post passes through the conductor wire intercommunication, is provided with the switch contact of intercommunication or the same group binding post of disconnection between all the other each group binding post, has the control switch contact to switch on in addition, the control button of disconnected action, and control button connects and controls all switch contact works simultaneously.

The utility model discloses a switchgear, be provided with multiunit binding post in it to it has formed many routes, wherein a set of binding post keeps connecting through the conductor wire, as ground protection line Pe (say often "ground wire"), in order to guarantee the continuity of circuit and make equipment be in the equipotential, when equipment takes place to leak electricity, no matter what kind of state switching device is in, the earth electrode of equipment or metal casing's electric current passes through the Pe route and conveys to the Pe line in the distribution system on, the consumer all is in on same zero potential, thereby prevent to electrocute; the other groups of terminals are used as phase lines (namely, live lines) or neutral lines (namely, zero lines), and are connected through the switch contacts, and the control switch is used for controlling the on and off of all the switch contacts simultaneously, so that the phase lines and the neutral lines are disconnected simultaneously, and the terminal equipment is completely isolated from the power supply side. The switching device can meet the use requirements of various circuit systems and electric equipment through the arrangement of a plurality of groups of wiring terminals, and has extremely wide application range; meanwhile, the on-off control of the phase line and the neutral line can be realized at the same time, and the continuous connection of the grounding protection line is kept, so that the power utilization safety is improved.

Drawings

Fig. 1 is a schematic view of the structure of the switching device.

Fig. 2-5 are schematic circuit connection diagrams of the switchgear for different power distribution systems and different electrical devices, respectively.

Detailed Description

As shown in fig. 1, four sets of terminals are disposed in the switching device, so as to form four paths, which are L1, L2, and L3/N, Pe, respectively, the first three paths are used for connecting the phase lines, and meanwhile, the L3/N line can also be used for connecting the neutral line, and is used for connecting a single-phase device with a phase voltage of 220V and conducting an unbalanced current in a three-phase system; and the Pe line is used for the ground protection line.

The switching device comprises a shell 1, wherein four groups of oppositely arranged wiring terminals 2 are arranged in the shell, one group of wiring terminals are communicated through a conducting wire 3, a switch contact 4 for communicating or disconnecting the same group of wiring terminals is arranged between the other three groups of wiring terminals, a control button (not shown) for controlling the on-off action of the switch contact is arranged, and the control button is connected with and controls the three groups of switch contacts to work simultaneously.

As shown in fig. 2, when a three-phase five-wire power distribution system is used to supply 220V lamps for illumination, the shunt circuit of the lamps is a three-core cable, i.e., L + N + Pe. The phase line L on the incoming line side is connected to a connecting terminal L1 or L2 of the switch device, the neutral line N is connected to a connecting terminal L3/N, and the grounding protection line Pe is connected to the connecting terminal Pe; l1 or L2 corresponding to the outgoing line side is connected with the L pole of the lamp, L3/N is connected with the N pole of the lamp, and Pe is connected with the ground pole or the metal shell of the lamp.

When a three-phase three-wire system is used to supply 220V lamp lighting, the shunt line of the lamp is a two-core cable, i.e., 2L, as shown in fig. 3. One phase line on the incoming line side is connected to a connecting terminal L1 or L2 of the switching device, and the other phase line is connected to a connecting terminal L3/N; l1 or L2 corresponding to the outgoing line side is connected with the L pole of the lamp, and L3/N is connected with the N pole of the lamp.

When a three-phase five-wire system power distribution system is adopted to supply 380V fan for work, the branch circuit of the fan is a four-core cable, namely 3L + Pe, as shown in FIG. 4. Three-phase power lines L1, L2 and L3 on the inlet side are respectively connected with connecting terminals L1, L2 and L3/N of the switch device, and a grounding protection line Pe is connected with the connecting terminal Pe; the wiring terminals corresponding to the outgoing line side are respectively connected with U, V, W poles on the fan motor, and the Pe is connected with the ground pole or the metal shell of the fan motor.

When a 380V fan is supplied to work by using a three-phase three-wire system power distribution system, the branch line of the fan is a three-core cable, namely 3L, as shown in FIG. 5. Three-phase power lines L1, L2 and L3 on the inlet side are respectively connected with connecting terminals L1, L2 and L3/N of the switching device; and the corresponding wiring terminals on the outgoing line side are respectively connected with U, V, W poles on the fan motor.

Claims (2)

1. A switching device comprising a casing (1), characterized in that: three or more groups of oppositely arranged wiring terminals (2) are arranged in the shell, wherein one group of wiring terminals are communicated through a conducting wire (3), switch contacts (4) for communicating or disconnecting the same group of wiring terminals are arranged among the other groups of wiring terminals, a control button for controlling the on-off action of the switch contacts is additionally arranged, and the control button is simultaneously connected with and controls all the switch contacts to work.

2. The switching device according to claim 1, wherein: four sets of oppositely arranged wiring terminals (2) are arranged in the shell (1).

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