TWM586475U - Neutral-line circuit protection equipment - Google Patents

Abstract

A neutral line circuit protection device includes: a single-phase three-wire power line, a fuseless switch, and two electromagnetic contactors. The power line has an R line (fire line), a T line (fire line), and One N line (neutral line), the R line and the T line are respectively pulled out through the above non-fuse switch, and the above electric line is used in combination with the electromagnetic contactor. The R line and the T line are formed separately and two are independent. Circuit, when the N line is disconnected, the two electromagnetic contactors 形成 will immediately form a power-off state, avoiding the situation where the R line and the T line are connected to form a 220V current due to the N line disconnection, thereby preventing the original The electrical equipment plugged into the 110V electrical end is burned due to the high voltage, which protects the electrical equipment and home safety.

Description

Neutral line protection equipment

This creation is about a kind of neutral line circuit protection equipment. The main purpose is to protect the two live lines from forming a 220V circuit directly when the neutral line is disconnected to prevent electrical appliances from being burned.

General household electricity is single-phase three-wire, R line 51 (fire line), T line 52 (fire line) and N line 53 (neutral line) reach 110 / 220V power supply, please refer to Figure 4 at the same time, 2 sets of 110V circuit 54 is RN and TN respectively, and 220V circuit 55 is RT. The electric lamp and socket circuit are powered by 110V circuit 54 constituted by RN or RT. Most air-conditioning and electric water heaters are powered by 220V circuit 55 constituted by RT. If N The line 53 (neutral line) is disconnected before and after the switch box (NFB), and the current will form a 220V circuit 55 from the R line 51 to the T line 52, so that the two groups of 110V circuits 54 will also be assigned as 220V circuits 55, causing the original Electrical equipment and lights that are only suitable for 110V circuits will be burned because the voltage of 220V exceeds 110V, which will not only cause damage to the equipment, but also seriously affect home safety. It is necessary to improve it.

In view of this, the author has many years of experience in manufacturing development and design of related products. In view of the above goals, after careful design and careful evaluation, he finally has a practical and practical creation.

The technical problem to be solved by this creation is to provide a neutral circuit protection device for the above-mentioned shortcomings of the existing technology.

The above equipment includes: a single-phase three-wire power line, a non-fuse switch, and two electromagnetic contactors. The power line has an R line (fire line), a T line (fire line), and an N line (neutral line). ), The R line and the T line are respectively pulled out through the non-fuse switch, and the electromagnetic contactors each have a live wire input terminal, a neutral wire input terminal, a plurality of fire wire output terminals, and a plurality of neutral wires. The output terminal, the above-mentioned hot wire input terminal and the neutral wire input terminal are formed inside the electromagnetic contactor to form a magnetic coil, and whether a magnetic field is generated by the magnetic coil is used as a basis for the electromagnetic contactor to form a connection or a jumper. The hot wire input terminal and the hot wire output terminal are in an on and off state, and the neutral wire input terminal and the neutral wire output terminal are in an on and off state. The R wire is connected to one of the fire wire input terminals of the electromagnetic contactor. The above T wire is connected to the live wire input terminal of another electromagnetic contactor, and the N wire is respectively connected to two neutral wire input terminals of the electromagnetic contactor, and the electromagnetic contactors are respectively connected via An output terminal of the live wire and a neutral output terminal of the contact terminal constituting a 110V power.

Preferably, the R line and the T line are connected to form a 220V power terminal.

Preferably, at least one contact point is provided inside the electromagnetic contact point for the hot-wire input terminal, hot-wire output terminal, neutral wire input terminal, and neutral wire output terminal.

Preferably, the electromagnetic contactor is provided with two bases, a fixed iron core interposed between the two bases, a movable iron core facing the fixed iron core, a movable rod connected to the movable iron core, and a plurality of Contact iron pieces fixed on the movable rod and corresponding to the above-mentioned contacts respectively, the magnetic coil system is wound on the fixed iron core, the movable rod is provided with a connection plate above the movable iron core, and the connection plate and Two springs are connected between the bases.

Contrast with the effect of the prior art: the above-mentioned use of the electric line with the two electromagnetic contactors is formed by separating the R line and the T line into two independent circuits. When the N line is disconnected, the two electromagnetic contactors 立即 It will immediately form a power-off state to prevent the R and T lines from being connected to form a 220V current due to the disconnection of the N line, and to prevent the electrical appliances originally plugged in the 110V power end from being burned due to excessive voltage. To achieve the purpose of protecting electrical appliances and home safety.

[This creation]

10‧‧‧ Power Line

11‧‧‧R line

12‧‧‧T line

13‧‧‧N line

20‧‧‧ No Fuse Switch

30‧‧‧ electromagnetic contactor

31‧‧‧FireWire Input

311‧‧‧contact

32‧‧‧ neutral input

321‧‧‧contact

33‧‧‧FireWire output

331‧‧‧contact

34‧‧‧ Neutral output

341‧‧‧Contact

35‧‧‧Magnetic coil

36‧‧‧ base

37‧‧‧Fixed iron core

38‧‧‧ movable iron core

39‧‧‧ movable lever

391‧‧‧contact iron

392‧‧‧Connector

393‧‧‧ spring

40‧‧‧110V power terminal

50‧‧‧220V power terminal

[Learning]

51‧‧‧R line

52‧‧‧T line

53‧‧‧N line

54‧‧‧110V circuit

55‧‧‧220V circuit

Figure 1: Schematic of this creation.

Figure 2: The power-on diagram for this creation.

Figure 3: Schematic diagram of power failure for this creation.

Figure 4: Schematic diagram of the conventional circuit.

In order for your reviewers to have a better understanding and understanding of the purpose, characteristics and effects of this creation, please cooperate with the following [Schematic Description] as detailed below:

First, please refer to FIG. 1 for a neutral line circuit protection device, which includes: a single-phase three-wire electrical circuit 10, a non-fuse switch 20, and two electromagnetic contactors 30. The above-mentioned electrical circuit 10 It has an R line 11 (fire line), a T line 12 (fire line), and an N line 13 (neutral line). The R line 11 and the T line 12 are respectively drawn through the non-fuse switch 20, and the above Each of the electromagnetic contactors 30 has a live wire input terminal 31, a neutral wire input terminal 32, a plurality of fire wire output terminals 33, and a plurality of neutral wire output terminals 34, and the above-mentioned fire wire input terminal 31, fire wire output terminal 32, medium The neutral line input terminal 33 and the neutral line output terminal 34 are all provided with at least one contact 311, 321, 331, 341 inside the above-mentioned electromagnetic contactor 30, and the hot line input terminal 31 and the neutral line input terminal 32 are connected together. A magnetic coil 35 is formed, and the electromagnetic contactor 30 is provided with two bases 36, a fixed iron core 37 interposed between the two bases, a movable iron core 38 facing the fixed iron core 37, and a movable iron core Moving of iron core 38 A rod 39, and a plurality of contact iron pieces 391 fixed on the movable rod 39 and corresponding to the contacts 311, 321, 331, and 341, respectively; the magnetic coil 35 is wound on the fixed iron core 37; and the movable rod 39 is provided with a connection plate 392 above the movable iron core 38, and two spring members 393 are connected between the connection plate 392 and the base 36, and the R line 11 is connected to one of the magnetic contactors 30 of the live wire input. Terminal 31, the above-mentioned T line 12 is connected to the hot wire input terminal 31 of the electromagnetic contactor 30, and the N line 13 is respectively connected to two neutral line input terminals 32 of the electromagnetic contactor 30, and the above-mentioned electromagnetic contactor 30 A 110V power terminal 40 is formed by being connected through a hot wire output terminal 33 and a neutral wire output terminal 34 respectively.

In addition, when the R line 11 and the T line 12 are connected, a 220V power terminal 50 is formed.

As mentioned above, please observe from the second figure. Whether the electromagnetic contactor 30 generates a magnetic field through the magnetic coil 35 or not is used as the basis for the electromagnetic contactor 30 to be connected or jumped. The input terminal 31 and the hot-wire output terminal 33 have an on and off state, and the neutral wire input terminal 32 and the neutral wire output terminal 34 have an on and off state, whereby the formation of the non-fuse switch 20 is controlled. When the electric circuit 10 is in the conducting state, the two electromagnetic contactors 30 俾 mentioned above will introduce the current of the R wire 11 and the current of the T wire 12 through the hot wire input terminal 31, so that the magnetic coil 35 wound around the fixed iron core 37 generates a magnetic field. The fixed iron core 37 is formed into an electromagnet by electromagnetic induction, and the movable iron core 38 is attracted to be displaced downward and magnetically positioned, thereby further contacting the plurality of contact iron pieces 391 on the movable rod 39 with the above-mentioned contacts 311 and 321. , 331, 341, forming the conducting state of the hot wire input terminal 31 and the hot wire output terminal 33, and the conducting state of the neutral wire input terminal 32 and the neutral wire output terminal 34. At this time, via one of the hot wire output terminals 33 and one of Neutral line output 34 The connected 110V power terminal 40 俾 can be used for power supply to achieve the purpose of applying 110V electrical appliances and lamps, and the electromagnetic contactor 30 is provided with a plurality of hot wire output terminals 33 and a neutral wire output terminal 34 for the cable. power distribution.

In addition, when the N line 13 is disconnected, please refer to FIG. 3 at the same time. Secondly, only the R line 11 or T line 12 current is introduced into the electromagnetic contactor 30. The magnetic coil 35 俾 cannot form a magnetic field due to the open circuit. So that the movable iron core 38 is released from the magnetic attraction state of the fixed iron core 37, and rebounded and reset through the two spring members 393, and then the movable rod 39 is moved upward to displace the contact iron pieces 391. The contacts 311, 321, 331, and 341. At this time, the 110V power terminal 40 俾 connected to the hot-wire output terminal 33 and the neutral-line output terminal 34 will immediately form a power-off state to prevent R when the N-line 13 is disconnected. Line 11 and T line 12 will be connected to form a loop, which can avoid the use of 220V electrical current and lead to the burnout of the original 110V electrical appliances, to achieve the purpose of protecting electrical appliances, and improve safety. The 220V power terminal 40 connected to the device 30 is not affected, and can continuously supply a 220V current for use.

By virtue of the structure of the above specific embodiment, the following benefits can be obtained: the above-mentioned electric circuit 10 is used in combination with two electromagnetic contactors 30, and the R line 11 and the T line 12 are separated into two independent circuits. When the N line 13 is broken In this case, the electromagnetic contactor 30 俾 will immediately form a power-off state, avoiding the situation where the R line 11 and the T line 12 are connected to form a 220V current due to the disconnection of the N line 13, thereby preventing the original plugged in at 110V. The electrical appliances at the power end 40 are burned due to excessive voltage, so as to protect the electrical appliances and home safety.

In summary, this creation has indeed achieved a breakthrough structural design, with improved creative content, and at the same time, it can achieve industrial applicability and progress. This creation has not been seen in any journals, and it is also novel. In accordance with the relevant provisions of the Patent Law, I submitted an application for a creation patent in accordance with the law.

The above is only one of the preferred embodiments of this creation. When it cannot be used to limit the scope of implementation of this creation; that is, the equal changes and modifications made in accordance with the scope of the patent application for this creation, All should still fall within the scope of this creation patent.

Claims (4)

A neutral line circuit protection device includes: a single-phase three-wire power line, a fuseless switch, and two electromagnetic contactors. The power line has an R line (fire line), a T line (fire line), and An N line (neutral line), the R line and the T line are respectively pulled out through the non-fuse switch. The electromagnetic contactors each have a live input, a neutral input, and a plurality of live outputs. Terminal and a plurality of neutral line output terminals, the above-mentioned hot line input terminal and the neutral line input terminal are connected inside the electromagnetic contactor to form a magnetic coil, and whether a magnetic field is generated through the magnetic coil to form an electrical contact or It is the basis for power-off, so that the hot-wire input terminal and the hot-wire output terminal are in an on and off state, and the neutral wire input terminal and the neutral wire output terminal are in an on and off state. The R line is connected to one of the The hot wire input terminal of the electromagnetic contactor, the above T wire is connected to another hot wire input terminal of the electromagnetic contactor, and the N wire is respectively connected to two neutral wire input terminals of the electromagnetic contactor, and the above Magnetic contactor contact system are composed of a terminal via a 110V power output terminal of the live wire and a neutral wire of the output terminal. According to the neutral line circuit protection device described in Item 1 of the scope of the patent application, wherein the R line and the T line are connected to form a 220V power terminal. According to the neutral line circuit protection device described in item 1 of the scope of the patent application, wherein the electromagnetic contact is internally provided with at least one of the above-mentioned live wire input terminal, live wire output terminal, neutral wire input terminal, and neutral wire output terminal. contact. According to the neutral line circuit protection device described in item 3 of the scope of the patent application, wherein the electromagnetic contactor is provided with two bases, a fixed iron core interposed between the two bases, and a movable core facing the fixed iron core. An iron core, a movable rod connected to the movable iron core, and a plurality of contact iron pieces fixed on the movable rod and corresponding to the above-mentioned contacts respectively, the magnetic coil system is wound on the fixed iron core, and the movable rod system A connecting plate is provided above the movable iron core, and two spring members are connected between the connecting plate and the base.