CN213124325U

CN213124325U - Leakage protection switch with live display function

Info

Publication number: CN213124325U
Application number: CN202021377275.4U
Authority: CN
Inventors: 王立; 吴保军; 张海青; 靳海军; 武天齐
Original assignee: Yangquan Power Supply Co of State Grid Shanxi Electric Power Co Ltd
Current assignee: Yangquan Power Supply Co of State Grid Shanxi Electric Power Co Ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-05-04
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to a transformer substation overhauls power earth leakage protection switch specifically is a have electrified display function earth leakage protection switch. A leakage protection switch with an electrified display function comprises a leakage protector and an air switch; an electrified indicating lamp loop is arranged in the independent upper bin at the upper part of the leakage protector, and each phase of electrified indicating lamp is arranged outside the independent upper bin; the outgoing line wiring copper terminals of the leakage protector are respectively welded and wired, and are led out from the gaps of the connecting wires of the air switch and the leakage protector, and are fastened and combined with the air switch through the leakage protector, the outgoing line wiring copper terminals are punched to enter the upper independent upper bin of the leakage protector, and are connected with the original elements of the electrified indicating lamp loop, and each group of the outgoing line wiring copper terminals is alternately separated by an insulating plate and is punched and led out from the independent upper bin hole, and each group of the outgoing line wiring copper terminals is connected with one electrified indicating. The live indicator lamp is connected with the outlet end of the earth leakage protection switch, and can detect the on/off state of the internal contact of the earth leakage protection switch, namely, the running state of the earth leakage protection switch is monitored.

Description

Leakage protection switch with live display function

Technical Field

The utility model relates to a transformer substation overhauls power earth leakage protection switch specifically is a have electrified display function earth leakage protection switch.

Background

When the transformer substation is engaged in field operation, an important task is to receive a maintenance power supply from a maintenance power supply box. At present, a wiring terminal block is led out from an earth leakage protection switch in a maintenance power box, and a connection power supply is directly connected from the wiring terminal block. The leakage protection switch is a current-limiting breaker with overload and short-circuit protection functions, is composed of an air switch and a leakage protector, and is fixed together by fastening screws, and an independent upper bin is arranged above the leakage protector.

When a work team needs to access a power supply, two persons are required to be together to strengthen monitoring, the corresponding leakage protection switch of the maintenance power box is checked to be in a disconnection position, then the power supply is accessed on the corresponding wiring terminal, and then the corresponding leakage protection switch is switched on. And disconnecting the used leakage protection switch after the work is finished, and removing the cable.

A three-way or four-way four-pole (A, B, C, N) leakage protection switch is generally installed in a transformer substation maintenance power box. Is convenient for different teams and groups to use simultaneously.

In the process of accessing the power supply, the following technical problems exist:

1. the leakage protection switch lacks the electrified display function, can't monitor the inside three-phase contact of switch and divide, close the state.

2. Due to negligence of personnel, the leakage protection switch is easy to be disconnected for wiring, and safety accidents such as electric shock of personnel can occur.

3. When a plurality of groups access the maintenance power supply in the same maintenance power supply box successively, the situation that a wiring worker mistakenly disconnects power supply leakage protection switches of other groups using the power supply frequently occurs on site.

Disclosure of Invention

The utility model provides a solve above-mentioned technical problem, provide a have electrified display function earth leakage protection switch.

The utility model discloses an adopt following technical scheme to realize: a leakage protection switch with an electrified display function comprises a leakage protector and an air switch, wherein an independent upper bin is arranged above the leakage protector; an electrified indicating lamp loop is arranged inside and outside the independent upper bin at the upper part of the leakage protector, and each phase of electrified indicating lamp is arranged outside the independent upper bin; the outgoing line wiring copper terminals of the leakage protector are respectively welded and wired, and are led out from the gaps of the connecting wires of the air switch and the leakage protector, and are fastened and combined with the air switch through the leakage protector, the outgoing line wiring copper terminals are punched to enter the upper independent upper bin of the leakage protector, and are connected with the original elements of the electrified indicating lamp loop, and each group of the outgoing line wiring copper terminals is alternately separated by an insulating plate and is punched and led out from the independent upper bin hole, and each group of the outgoing line wiring copper terminals is connected with one electrified indicating.

The method comprises the following steps of (1) sticking and fixing an adhesive for the electrified indicating lamp on the upper part of the leakage protector, and marking each phase by different colors; and the front surface of the middle-phase electrified indicating lamp is numbered by white ink.

The utility model has the advantages that:

1. the live indicator lamp is connected with the outlet end of the earth leakage protection switch, and can detect the on/off state of the internal contact of the earth leakage protection switch, namely, the running state of the earth leakage protection switch is monitored.

2. Leakage protection switch closes, and the leading-out terminal is electrified then electrified pilot lamp is bright, and carry out serial number "1, 2, 3." suggestion staffs that connects on well pilot lamp, this leakage protection switch is closing the position, does not break off power leakage protection switch wiring when preventing personnel's negligence wiring, causes dangers such as personnel's electric shock.

3. Many teams and groups during operation, when the wiring was disconnected power earth leakage protection switch, other teams and groups of this way earth leakage protection switch can be being used in the suggestion personnel to electrified pilot lamp, prevent other teams and groups power of mistake break, remember the serial number on the electrified pilot lamp of earth leakage protection switch who uses during the wiring, and the corresponding earth leakage protection switch is pull open according to the serial number when convenient work finishes tearing power cord open.

Drawings

Fig. 1 is a disassembled schematic diagram of a leakage protection switch.

FIG. 2 is a schematic circuit diagram of a live light (220V).

Fig. 3 is a schematic diagram of the leakage protection switch with the live display function.

Fig. 4 is a schematic diagram showing the wiring details.

Fig. 5 is a field operation diagram of the earth leakage protection switch with the live display function.

1-the leakage protector is empty to put "the independent storehouse", 2-the independent storehouse hole (this hole is not opened), 3-the leakage protector, 4-the wiring copper terminal of being qualified for the next round of competitions, 5-the fastening screw hole, 6-the air switch (quadrupole), 7-the parallel resistance, 8-the condenser, 9-the live indicator lamp, 10-the protection resistance, 11-the insulation board, 12-the fastening screw, 13-the wiring, 14-the zero line terminal screw of being qualified for the next round of competitions, 15-A, B, C looks outgoing lines terminal screw, 16-have electrified display function leakage protection switch, 17-the leakage protector side half slot and wiring, 18-the air switch side half slot, 19-the power master switch, 20-the binding post row, 21-the maintenance power supply box.

Detailed Description

The upper part of the leakage protector is provided with an empty 'independent upper bin', the 'independent upper bin' is internally provided with live indicating lamp loop elements (a protective resistor, a capacitor and a parallel resistor), and an A, B, C three-phase live indicating lamp (220V) is arranged outside the 'independent upper bin' on the upper part of the leakage protector. The outgoing line wiring copper terminal (A, B, C, N) of the earth leakage protector is respectively welded and wired, the outgoing line wiring copper terminal is led out from the gap of a connecting wire of an air switch and the earth leakage protector, the outgoing line wiring copper terminal is fastened and combined with the air switch through the earth leakage protector (symmetrical semicircular grooves are respectively formed in the side shells of the earth leakage protector and the air switch), the outgoing line wiring copper terminal is punched and enters the upper independent upper bin of the earth leakage protector, the loop original piece of the electrified indicating lamp is connected, three phases are assembled into three groups, the phases are separated by an insulating plate, the outgoing line wiring copper terminal is punched and led out from the independent upper. The electrified indicating lamp is adhered and fixed on the upper part of the leakage protector by glue, and the front surface of the middle-phase (B-phase) electrified indicating lamp is numbered by white ink (1, 2 and 3.).

The outlet end of the leakage protection switch is provided with a numbered live indicator lamp:

1. the live indicator lamp is connected with the outlet end of the leakage protection switch, and can detect the on and off states of the internal contacts of the three-phase leakage protection switch, namely, the running state of the leakage protection switch is monitored.

2. When the leakage protection switch is switched on, the three-phase electrified indicating lamp (according to the colors of A yellow, B green and C red) is turned on when the wire outlet end is electrified, and the number of the three-phase electrified indicating lamp is '1, 2 and 3 once' on the middle-phase (B-phase) green indicating lamp to prompt a wiring person, the leakage protection switch is switched on, and the danger that the power supply leakage protection switch is not switched off to be wired when the person neglects to perform wiring, so that the person gets an electric shock and the like is avoided.

As shown in fig. 1, which is an exploded view of the earth leakage protection switch, it can be seen that the earth leakage protection switch is composed of two parts, namely an earth leakage protector and an air switch; an independent upper bin is arranged above the air switch, and holes are formed in the independent upper bin for leading in a circuit connection wire of the electrified indicating lamp.

As shown in fig. 2, the live indicator light circuit is composed of a protection resistor 10, a live indicator light 9, a capacitor 8 and a parallel resistor 7 connected in parallel at two ends of the capacitor 8 in sequence; except the electrified pilot lamp, other original papers are located inside independent upper bin.

Fig. 3 shows the leakage protection switch with the live display function of the present invention, and fig. 4 shows a pair of half slots respectively formed on the leakage protection device and the air switch.

In fig. 5, the earth leakage protection switch with the live display function is mounted on a fixed beam in the maintenance power box; the lower part of the earth leakage protection switch is provided with a wiring terminal block 20, and the upper part is provided with a power supply main knife switch 19.

Claims

1. A leakage protection switch with an electrified display function comprises a leakage protector (3) and an air switch (6), wherein an independent upper bin is arranged above the leakage protector (3); the leakage protector is characterized in that a live indicator lamp loop is arranged inside and outside an independent upper bin at the upper part of the leakage protector (3), and each phase of live indicator lamp (9) is arranged outside the independent upper bin; the outgoing line wiring copper terminal (4) of the leakage protector (3) is respectively welded with the wiring (13), the outgoing line wiring copper terminal is led out from the gap of the connecting wire of the air switch (6) and the leakage protector (3), the outgoing line wiring copper terminal is fastened with the air switch (6) through the leakage protector (3) to be combined with the seam, the outgoing line wiring copper terminal is punched to enter the upper portion of the leakage protector (3) to be independently put into a warehouse, a charged indicator light loop original piece is connected, each phase is assembled into a group, the outgoing line wiring copper terminal is separated by an insulating plate (11) alternately, the outgoing line wiring copper terminal is punched and led out from.

2. The earth leakage protection switch with the live display function as claimed in claim 1, wherein each set of live indicator light circuit elements is composed of a protection resistor (10), a live indicator light (9) and a capacitor (8) which are connected in sequence, and a parallel resistor (7) connected in parallel at two ends of the capacitor (8).

3. The earth leakage protection switch with the electric display function as claimed in claim 1 or 2, wherein symmetrical semicircular grooves are formed on the side housings of the earth leakage protection device (3) and the air switch (6) respectively for leading out the connection wires (13).

4. The earth leakage protection switch with the electrified display function as claimed in claim 1 or 2, wherein the electrified indicating lamp (9) is fixed on the upper part of the earth leakage protector (3) by using an adhesive, and each phase is respectively marked by different colors; and the front surface of the middle-phase electrified indicating lamp is numbered by white ink.

5. The earth leakage protection switch with the electrified display function as claimed in claim 3, wherein the electrified indicating lamp (9) is fixed on the upper part of the earth leakage protector (3) by using glue, and each phase is respectively marked by different colors; and the front surface of the middle-phase electrified indicating lamp is numbered by white ink.