KR0125670Y1 - Over-voltage protector - Google Patents

Abstract

In the case of various surges such as induction surge and power system open / close surge due to lightning strikes, gas tubes, overvoltage suppressors, capacitors, and inductances are combined with primary protection fuses to remove residual left voltage and high frequency noise. It is an overvoltage suppressor that makes it possible to secure the stability of equipment by making modular and serial connection possible.

Description

Overvoltage Suppressor

1 is an overvoltage suppressor circuit diagram of a first embodiment of the present invention.

2 is an overvoltage suppressor circuit diagram of a second embodiment of the present invention.

Figure 3 is a perspective view of the module product of the second embodiment of the present invention.

4 is an external perspective view of a third embodiment of the present invention.

5 is an internal circuit diagram of a third embodiment of the present invention.

6 is an internal circuit diagram of a fourth embodiment of the present invention.

7 is an internal circuit diagram of a fifth embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1,32,33,44,71,72,73: Short circuit overcurrent protection device 2,30,31: Protection fuse

4,7,8,15,16,17, M1,49,50,51,52,53,54,77,78,79,80,81,82,83,101,102,103,107,108,109

3, GS1,110,111: Gas tube 10,13,55,56: Inductance

12,14, C1,57,58,83,84,85,86,114: condenser

11,19, R1, R2, R8, R9,47,62,63,64,65,66,112,113: resistance

The present invention relates to an overvoltage suppressor for protecting electrical or electronic equipment from induction surges caused by lightning strikes, switching surges generated during opening and closing of power systems, and surges flowing through various power systems.

Conventional lightning protection method induces direct lightning strikes by lightning rods to safely discharge the lightning current to the earth, minimizes the earth potential rise during lightning current discharge, and installs a protection device at the inib point of the power supply line. It is to install protection device on data / signal line such as communication cable, remove ground loop and eliminate all ground positions. Here, lightning strikes are induced by lightning rods to protect the equipment, but indirect lightning strikes and guided lightning strikes are appropriately protected using TVSS (Transient Voltage Surge Suppresor).

TVSS is a type of protection device installed in series or force in line to protect equipment from surge and transient current flowing through Faroline and data / signal line. It blocks the surges and overcurrents exceeding the rated voltage of the TVSS, absorbs some of them and returns them to the ground or power supply to prevent them from being delivered to the protected equipment.

The present invention improves transient voltage suppression effect by combining surge protection device and high frequency noise canceling device in developing such TVSS circuit, and exceeds the capacity of transient voltage suppressor by incorporating short-circuit overcurrent protection fuse and overheat protection protection fuse. This solves all problems that may be caused by surge, short circuit or instantaneous overvoltage.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The first embodiment of the present invention is a protection fuse 2, which is a thermistor or a thermal switch, and a short-circuit over-current protection element (10) in series to protect the explosion and fire of the overvoltage suppressor. ,

The primary overvoltage suppressor (B) connected in series with the gas tube (3) and the overvoltage suppression elements (4), (7) and (8) causes an abnormal voltage to flow to the ground side when the suppression voltage is exceeded.

An abnormal high frequency noise flows to the high frequency noise removing unit (C) in which the inductance (10) and (13) are connected in series with the line, and the sine wave tracking capacitor (12) and (14) and the auxiliary resistor (11) are connected in parallel.

The secondary overvoltage suppressor (D), in which the overvoltage suppressors 15, 16, and 17 are connected in parallel and in series, removes the residual overvoltage passing through the input side and switching surges that can flow from the load side. The remote monitoring display (e) consisting of the functional unit 20, the relay 21, and the auxiliary resistor 19 is configured to display the operation state of the overvoltage suppressor to visually determine the abnormality of the suppressor and the operation state. (Figure 1).

In the second embodiment of the present invention, the surge protection circuit of the first embodiment has a double configuration, and an overheat and short circuit overcurrent protection unit in which a protective fuse 30 (31) and a short circuit overcurrent protection device (32) 33 are directly connected. (F) to protect the equipment in case of explosion and fire of the overvoltage suppressor;

The overvoltage suppressor (sa) composed of an overvoltage suppressor (M1), a gas tube (GS1), a capacitor (C1), and a resistor (R1) (R2) was double-combined.

The operating state of the suppressor is formed between the overvoltage suppressor (sa) and the (r) between the red lamp L1, the green lamp L2, L3, and the auxiliary resistor R8, R9. Visually confirmed the presence of abnormalities (Figure 2).

In particular, the present invention modularized it into a unit so that it can be replaced immediately in case of failure (Fig. 3).

As a third embodiment of the present invention, a series-type overvoltage suppressor having an overvoltage suppression function, a plurality of output outlets 40 are disposed on the front face 41, the snap switch 42 on one side and the signal portion ( 43) is a wide polyhedral structure in which a signal can be displayed on the signal part 43 at the reverse polarity or non-grounded connection, and at the same time, overvoltage suppression is possible (FIG. 4). As shown in FIG. 5, the internal circuit includes a short circuit overcurrent protection device 44, an overheat protection device 45, a power cutoff switch 46, and an open display lamp 48 having an auxiliary resistor 42. Short-circuit overcurrent and overheat protection.

Overvoltage suppressors 49, 50, 51, 52, 53, 54, inductances 55 and 56 for high frequency noise rejection, and capacitors 57 and 58 for applying high frequency noise cancellation and sine wave tracking Overvoltage suppression, high frequency noise removal and sine wave tracking function

There is an input normal display lamp 60 and an input voltage reverse polarity connection and non-grounding display lamp 61 and auxiliary resistors 62, 63, 64, 65, 66, transistors 67, 68, and rectification. It consists of the display part (car) which becomes the diode 70.

Therefore, when the suppressor is opened due to overheating or short-circuit overcurrent, the lamp 61 is turned off when the input normal lamp 60 and the reverse polarity connection or non-grounding are turned off, and the open display lamp 48 is turned on.

As a fourth embodiment of the present invention, a free overvoltage suppressor in series / parallel connection is shown in FIG.

Each phase has short-circuit overcurrent protection elements 71, 72, 73 and overheat protection elements 74, 75, 76, and overvoltage suppression elements 77, 78, 79, 80 ( 81) (82) (83) and high frequency noise eliminating capacitors (83) (84) (85) (96) are installed for each phase and are lamps (87) (88) (89) which are turned on when the overvoltage suppressor is operated. The auxiliary resistors 90, 91 and 92 are provided. In this case, the serial connection method supplies inputs to the input 1 phase, input 2 phase, and input 3 phase terminals, and connects the thickening line of the input side and the thickening line of the output line together.The output 1 phase, output 2 phase, and output 3 phase are the load equipment. The power is connected to the power supply and ground is connected at the input and output common ground terminals.

In the parallel connection method, input 1 phase and output 1 phase, input 2 phase and output 2 phase, input 3 phase and output 3 phase can be connected directly, and the boosting line and the ground line are connected in common with the input side, so that they can be connected in parallel with the power supply line of the load equipment. .

A fifth embodiment of the present invention is shown in FIG. 7 as a parallel connection type overvoltage suppressor composed of a primary protection circuit part (2), a secondary protection circuit part (wave), and a double protection circuit.

The primary circuit part (2) is composed of a protective fuse 100 which is a thermistor or a thermo switch, and overvoltage suppression elements 101, 102, 103 and green lamp 104. The secondary protective circuit part (wave) is a thermistor. Alternatively, the protection fuse 105, which is a thermo switch, and the red lamp 106 are connected in parallel, and the overvoltage suppression elements 107, 108, 109, gas tubes 110, 111, and parallel resistors 112, 113 are connected. And a high frequency elimination capacitor 114.

The operating voltage of the primary protection circuit part was operated at the same voltage as the power supply voltage, and the operation voltage was differentiated according to the secondary protection circuit part to operate at a higher voltage than the primary protection circuit part.

If both the primary and secondary protection circuit parts are normal, the overvoltage is suppressed only in the primary protection circuit part. If the protection fuse 100 of the primary protection circuit part is disconnected by the surge voltage exceeding the suppression capacity, the lamp 104 is turned off. The overvoltage introduced into the secondary protection circuit portion is suppressed. The checking of the operation state of the secondary protection circuit section is normal when the lamp 106 is turned off and indicates that the short-circuit overcurrent protection fuse 105 is opened when it is turned on.

As described in various embodiments of the present invention, the overvoltage suppressor of the present invention is constructed in various forms based on the basic circuit of the first embodiment, so that it can be installed and used in all types of devices, but the inductive surge light overvoltage is double triple protected. And they are also modular so that they can be easily replaced and repaired when needed. In particular, by using a gas tube and an overvoltage suppression element, it is characterized in that it completely blocks the instantaneous high voltage passing through the protective fuse.

Claims (6)

Overheating and short-circuit overcurrent protection in series with a protective fuse (2) consisting of a thermistor or thermal switch and a short-circuit overcurrent protection element (1) to prevent explosion and fire of the overvoltage suppressor; A primary overvoltage suppressor (b) connected in series with a gas tube (3), an overvoltage suppressor (4), (7), and an inductance (10) (13) in series with a line to remove high frequency noise. High frequency noise canceling unit (C) connected in parallel with sinusoidal wave condenser (12) and (14) and auxiliary resistor (11), and to prevent the residual voltage passing through the input side and the switch surge flowing from the load side. The secondary overvoltage suppressor (D) in which the overvoltage suppressor elements 15, 16 and 17 are connected in parallel and in series, and the status display function unit 20 and the relay ( 21), consisting of a remote monitoring display (e) consisting of auxiliary resistors (19) Apeok raised. 2. The parallel combination of two overvoltage suppressors (sa) composed of an overvoltage suppressor (M1), a gas tube (GS1), a capacitor (C1), and a resistor (R1) (R2). Between the overvoltage suppressor (sa), the unit consisting of a display unit (a) consisting of red lamp (L1), green lamp (L3) (L4) and auxiliary resistor (R8) (R9) An overvoltage suppressor, characterized in that modularized to. The method of claim 1, wherein a plurality of output outlets 40 are arranged on the front face 41, the snap switch 42 on one side and the signal portion 43 is provided on the other side, the serial outlet type of the polyhedron structure Overvoltage Suppressor. 4. The overvoltage suppression elements 49, 50, 51, 52, 53 and 54, the inductances 55 and 56 for high frequency noise cancellation, and the capacitor for applying high frequency noise removal and sinusoidal wave tracking. Overvoltage suppression, high frequency noise elimination and sine wave tracking function (difference), input normal display lamp 60 and input voltage reverse polarity connection and non-grounding display lamp (61) (62) (63) (64) (65) (66), a transistor (67) (68), and an overvoltage suppressor characterized by comprising a display unit (ka) which is a current diode (70). According to claim 1, wherein the short-circuit overcurrent protection elements (71) (72) (73) and the overheat protection protection elements (74) (75) (76) for each phase are connected to have multiple protection fuse functions, and the overvoltage suppression device (77) (78) (79) (80) (81) 82 (83) and high frequency noise eliminating capacitors (83) (84) (85) (86) are installed for each phase. An overvoltage suppressor comprising lamps (87) (88) (89) and other auxiliary provisions (90) (91) (92) being lit. 2. The primary protection circuit part (1) according to claim 1, wherein the primary protection circuit part (2) comprises a protection fuse (100), an overvoltage suppression element (101) (102) (103) and a green lamp (104), and the secondary protection circuit part (wave) is protected. While connecting the fuse 105 and the red lamp 106 in parallel, the overvoltage suppressors 107, 108, 109, gas tubes 110, 111, parallel resistors 112, 113, and a high frequency elimination capacitor ( 114) An overvoltage suppressor, characterized in that consisting of.