KR20000018188A - Transient voltage surge suppressor for protecting internet computer - Google Patents

Abstract

PURPOSE: A TVSS for protecting an internet computer is provided to prevent a computer from breaking down due to the excessive surge electricity which flows into the computer through the electric cable(1-3) and communication cable(6-7) when the computer user uses or does not use the computer. CONSTITUTION: A TVSS for protecting an internet computer comprises: a power stop page protection circuit(12-13) blocking excessive surge electricity for protecting the computer from the excessive electricity when power stoppage happened; a surge suppression part(31-48) removing the surge electricity using heat and light when the excessive surge electricity flows into the power source and communication line; an excessive electricity blocking part(14-15) blocking the excessive electricity by switch when the amount of power of the excessive electricity is over a breakdown value; and a current sensing and controlling part(28-30) sensing the amount of the current generated by surge blocking, and controlling the current if the amount of the current is over an established value, wherein a power source input/output part(1-3,4-5) and a communication input/output part(6-7,8-9) are plugged in the TVSS.

Description

Transient voltage surge suppressor for protecting internet computer

The present invention connects the external power supply to the computer power source (1-3) and the communication line (6-7) with a plug-in connector, protection unit (12-13), transient breaker (14-15), It consists of a surge suppression unit 31-48, a current sensing control unit 28-30, and a start stop operation unit 10-11. TVSS (Transient Voltage Surge Suppressor).

Prevention of abnormal voltage of the computer power supply unit and the communication unit The conventional technology is a circuit configuration of the computer power supply unit of FIG. 1. C1, C2, NF1, R1, C3, C4, and NF2 are composed of general noise protection circuits. A VA1 (barista) is built into the circuit, and the next SMPS circuit supplies the voltage required for the computer circuit.

Referring to the circuit configuration of the computer communication unit of FIG. 2, after the communication input terminals T1 and T2, C5, C6, VA2, BL1, BL2, R2, R3, BL3, BL4, and the like are condensed and the bead core BL1-4. It is composed of noise prevention circuit and VA2 is composed of overvoltage protection.

The circuit of the power supply and communication part of the existing computer is designed to prevent noise, so that the C3, C4, C5, and C6 noise protection capacitors whose neutral point is grounded are destroyed when the transient abnormal voltage enters the common mode.

When the voltage is destroyed, the voltage is 4000-6000V, or if the outlet is not connected to ground, the transient voltage is discharged or leaked through the lines L1 and N circuits. In case of transient electricity entering normal mode, C1 and C2 installed in the power stage are destroyed, and when applied to the next stage barista (VA1, 14mm, 470V), the voltage over 6000V, 4500A, 8-20㎲ and the barista will be short-circuit. Destroyed by disconnection.

The communication unit is installed with barista VA2 (7d471, 7mm, 470V), but when 6000V, 1200A, 8-20㎲ or more, the barista is short-circuited and the modem board (PCB1) is also damaged.

The power supply surge voltage continues to be destroyed by the magnetic power supply 220V after normal operation (consumes abnormal electricity as heat), and after the breakdown, excessive electricity is directly connected to the main body damage. The communication unit VA2 and the modem board PCB1 are destroyed when the transient electricity is drawn in. The problem is that the power supply and communication unit of the computer is a basic design.

In order to solve the problems of the prior art, the present invention is directed to the transient surge electricity input through the line from the outside of the computer, ie, the KEPCO power source (1-3) and the Korean communication line (6-7), with or without the computer user. Its purpose is to protect against breakdowns and to provide a safe environment for your computer.

The object of the present invention is to remove the transient voltage and surge to the TVSS when the transient voltage is input from either the power line (1-3) and the communication line (6-7) or at the same time as the power supply and the communication unit during the use of the computer and suppress the surge during operation Detecting the overcurrent of negative part (31-48) (28-30) completely cuts off the contact breaker (14-15) to prevent secondary transient overvoltage ingress and protects the computer. Both communication lines 12 and 13 are turned off to protect the computer from electrical surges.

1 degree protection circuit of conventional computer power supply

2 is a protection circuit of the conventional communication circuit

3 degrees is the voltage-current waveform for world standard surge simulation

4 is a TVSS circuit for protecting a computer of the present invention.

<Explanation of symbols for main parts of drawing>

1-1a: Grounding terminal 2-3: Power input

4-5: Power Output 6-7: Communication Input

8-9: Communication output section 10: Power communication start button switch

11: Power communication stop button switch 12: Protection unit in case of power failure

13: Protection part in case of communication power failure 14: Power transient tripping block

15: Communication transient tripping breaker 16: Power trip magnet coil

17: communication trip magnet coil 18: power indicator lamp

21-23: power supply twisted wire 24-27: communication part twisted wire

28-30: Current sensing control part 31-36: Power supply surge suppression part barista

37-42: Communication part surge suppression part barista 43-45: Power supply surge suppression part addresser

46-48: Communication surge suppression part arrester 49: Overcurrent fuse

52: NTC temperature sensor 53-55: current limiting resistance of surge suppressor

The configuration of the TVSS of the present invention includes a power supply unit and a communication unit, and the power supply unit includes power input units (1-3 and 49), power output units (4-5), protection unit (12) during power failure, transient interrupting unit (14), and surge The suppression part 31-36, 43-45, the current-sensing control board part 28-30, and the start stop operation part 10-11 are provided, and the communication part is the communication input part 6-7 and the communication output part ( 8-9), the protection part 13 in case of a power failure, the transient voltage interruption part 15, and the surge suppression parts 37-42 and 46-48.

The power input unit (1-3) is easily inserted and detached in the same way as the input of the computer (Inlet-like DAC-13). This plug is plugged into the existing computer power source into the power input unit (1-3). Input power is supplied to the device TVSS, and the built-in overcurrent fuse (49) protects the secondary circuit by disconnecting power when the wiring, circuit, or component is abnormal in the power output unit (4-5). The protection fuse (250V 10A) also acts as an overcurrent caused by its own failure.

The power output unit 4-5 is inserted in the same manner as the output unit of the computer (outlet-equipped DAC-17), and the power is inserted into the computer power input unit from the output unit 4-5.

When the power supply (1-3) is tripped while the computer is in use, when the power supply (1-3) is tripped, the general manual switch can be turned on separately from the doctor. The device does not perform the normal protection function, and automatically shuts off when the power trips (12), and the two power lines (2-3) are all shut off before the user starts up again (10) to protect against excessive electricity during power outages. Will be

The transient voltage interrupter 14 is manually turned on when the power is turned on, and the contact point is turned on to serve as a main contact 14 for supplying power to the device and a computer connected to the output 4-5. When the transient electricity is drawn in, the sensor 52 and the current sensing unit 28 that detect overheating of 150 ° C. or higher with the power of the transient electricity are 2000-3000A and 3 ms or more. 17, Magnetic Coil) The power is output so that the two MC (16-17) is activated and at the same time the power is cut off to the main contact

The surge suppressor (31-36, 43-45) is composed of barista (31-36) and under star (43-45), and barista ((31-36) is 470-700V standard when surge voltage is input. The surge voltage of the power line circuit is removed by removing the power supply and the under star (43-45) operates when input over 700-1200V and consumes the transient electricity as light and heat to supply stable voltage to the power line. The parallel connection between the barista and the dwarf star is a low-speed barista that initially operates on transient electricity, and is a slower but less dense star.

The current sensing control unit 28-30 controls the normal mode (35, 36, 45) when the abnormal voltage is drawn between the L1 (2, Line 1), N (3, Normal), and G (1, Ground) lines of the power line. And common mode (31-34, 43, 44) act on two parts and sense the amount of current (28) and output to MC (16) when current amount is 2000-3000A, more than 3ms, mechanically 2A contact (14) OFF to cut off the power supply (2-3) and eliminate the damage caused by overheating in the normal mode (35, 36, 45) and common mode (31-34, 43, 44) surge suppression The circuit board power supply of the current control unit 30 is supplied from the power output unit 4-5 and serves as a stable function. The current sensing converters CT 28 and CT 29 have one product. It consists of a sense of current and the material is wound around the coil of silicon steel core (Id: 9mm, Od: 21mm) (800-1200T) serves to convert the current 1200A to 12mA ratio to supply to the current control board 30.

The start stop operation unit 10-11 is composed of switch 1 (10) and switch 2 (11), where 1 is a starting role and 2 is a stopping role. The contact points of 1 (10) are two A contacts. When not in use, both wires are disconnected from the power supply (2-3), which protects against surges during power outages, and the contact B of switch 2 (11) is intended to be in use or to be stopped. When pressed, it plays the role of tripping the power of the relay (12, 13).

The communication input unit 6-7 is easily inserted and detached in the same way as the communication input of the computer (INLET, AR6-2). In this part (6-7), the communication part is plugged into the existing computer communication port. (6-7), communication enters this unit (TEL INLET), and the AR6-2 pin number uses the last 1 and 6 numbers.

The communication output unit 8-9 is plugged in the same way as the communication output unit AR6-2 of the computer, and the communication line of the output unit 8-9 is the communication input unit of the computer (Line side of the modem). The pin number of AR6-2 is used 2 and 5.

When the power supply is out of power while the computer is in use, the general passive contact switch keeps receiving communication separately from its intention. Therefore, the protection unit 13 is not over the level of the Korean communication line (48V or 5-12V). If the abnormal voltage comes in during a power failure, the communication blackout protection circuit unit 13 automatically turns off when the power is tripped and does not operate ON until the user starts it again, thereby protecting both wires from the transient voltage during power failure. .

The communication unit transient voltage cutoff unit 15 inputs a communication signal manually and supplies a communication signal to the communication line of the computer connected to the output unit 8-9 when the contact point is turned ON. When the signal is received from the current sensing unit 29 and the magnitude of the transient electricity is 2-3KA or 3 ms or more, the MC 17 power is output from the current control board 30 so that the two MCs 16-17 are operated. It operates to cut off the communication transient voltage, and completely protects the communication line by completely blocking the secondary transient voltage inflow into the contact point 15.

Communication Surge Suppressor (37-42, 46-48) is composed of barista (37-42) and understar (46-48). The discharge start voltage of the barista is 82-150V. It removes the transient electricity from the communication line of the circuit by acting as a heat, and the discharge start voltage of the star below is 150-350V and operates at the input of abnormal voltage, consuming the surge voltage as light and heat, and in common mode (39-42, 47-48). Normal mode (37-38, 46) serves to supply a stable voltage to the communication line by continuing to discharge the high voltage of the circuit.

The communication current sensing control unit 29-30 is installed and operated on the same board as the power current control board unit 30, and the normal mode (37-38) when the abnormal voltage is drawn between the T1 and T2 (6-7) lines of the communication line. 46) When operating in the part of the common mode (39-42, 47-48), the current amount is sensed (29) and the output is sent to the MC2 (17) when the instantaneous current amount is 2-3kA and the time is 3ms or more. 15) is turned off to prevent communication by preventing the destruction caused by overheating of the surge suppressor 37-42, 46-48 by the secondary transient and surge voltage inlet, and to continuously discharge the high voltage raised in the circuit to ground. The current detector (CT 29 is composed of CT28 and one, that is, inserting the wire to be detected in one CT) is to convert the current. The coil is wound around the common silicon steel core to convert the current to 1200A: 12mA. It acts as a sensor of the current control board, and the power of the board is stabilized by being supplied from the power output unit (4-5). To the role.

The communication unit start stop operation 10-11 is constituted by a circuit operated simultaneously with the power supply unit. Composed of Switch 1 (10) and Switch 2 (11), 1 is the starting role and 2 is the stopping function. The contact point of 1 consists of two A contacts, and when pressed, power is supplied to 13 coils. When the contact point 13 of the line is turned ON, communication is performed.When contacting point B of 2 is in use, press the button to cut off the power supply of the relay 2 (13 coil) and cut off the coil power.The communication line contact point 13 is also OFF. It serves to block communication.

The waveform and voltage of the output terminal were measured when 6000V impulse was applied to L1-L2. The peak voltage of the output voltage was 828V and the voltage waveform was removed from 50㎲ to 2㎲ and the load incandescent bulb (220V 60W) connected to the output terminal was also reduced. Not destroyed.

The TVB's TCB 14 also tripped on the impulse.

The probe connected to the digital scope (Voltage Divider) was used for 1000: 1 and the scope was used for Lecroy 9310AM.

Detailed test method and sample installation method are applied in accordance with IEC 61000-4-5 and C1 of ANSI / IEEE C62.41.

Impulse generator uses NSG2050, pulse type is PNW2050 2 OHMS, and synchronous is asynchronous.

The interval of each number in the test sequence was 40 seconds. When the input voltage was 6000V, the output was 2072-2241A. Both the current generation and the operation of the equipment were working normally. Impulses were applied both positive and negative, and the operation was normal (all devices and reports were the same).

Impulse test was performed 1-40 times and the interval is 40 seconds. The impulse voltage is 4000V for 5 times in each mode to describe the fault and absorption currents. The smallest current is the 11th 893A to the 38th 1192A to record the highest current.

All reports of the test machine were printed in PASS (the same equipment used).

When input 4000V input, the maximum voltage of output voltage is 413V, the impulse time is 3㎲, TCB is tripped and TVSS is operated normally to become stable voltage on the secondary side to protect.

(The equipment used is the same equipment as Example 1)

When the applied voltage was minus 4000V, the output voltage became small with a time of 763V 2㎲ so that TVSS worked normally and TCB did not trip.

The monitor used for the fracture test used Hyundai HCM-423E SUPER VGA and the computer used IBM PERSONAL COMPUTER 350-P75 TYPE 6586-377 S / N 90-XMF19.

The program used during the operation of the computer displayed Hangul 97 Hangul 97 under Windows 95. When the transient electricity is applied to the TVSS, the Hangul 97 Hangul message on the computer was restarted.

Instead of a computer, 12 bulbs of incandescent bulbs, space table 220V60W space table KS No. 1899 are applied, and the bulb does not destroy and operates normally.

DV (Destruction Voltage) is a breakdown voltage (DV) between L1-L2 and L1, L2-G. The applied voltage is 13200,6600V. The DV pulse is output and sets the number of pulses applied to the TVSS and the PC. The actual number of pulses applied to the TVSS side is the pulse counter value.

The software used for the communication test was Sarom Dataman Pro, the port was COM3, the speed was 38400, and the ISP of the connection port communicated with Cheonian 01421.

The hardware used was a modern monitor, an IBM PC, a standard 14400bps modem, and an IBM keyboard.

When the breakdown electricity (DV) is input during communication, the TVSS operates to cut off the communication with the power supply. After 10 seconds, turn on the power again.

Example 8 The test is a test in which 110V is put into a bulb and a DV voltage is applied while the bulb is turned on.

The light bulb used for the test in mode 12 is 110V 60W daylight bulb KS1503. When the DV is applied to the light bulb and the TVSS is turned on, the light is turned on again.

The test was conducted 24 times and the bulb was not disconnected. In mode 16, 110V was applied to L1 and L2 so that the bulb between L1 and L2 was lit and the other bulb was connected to L1-G or L2-G. If you press (PC ON), the light bulb between L1-L2 turns on and the light bulb connected to ground does not light up without voltage.After 12 seconds, when the DV electricity is applied, the light bulb between L1 and L2 remains on and the light bulb connected to ground is momentarily After turning on the TVSS, the lamp turns off and both bulbs are turned off. When the TVSS power is reset again, the bulb between L1-L2 turns on immediately and is not disconnected from the power socket or by visual inspection. Show that you are alive by the flash.

Example 9 The test was applied with DV electricity in the normal operation state with the breaking test article turned on.

Destructive tests of incandescent bulbs, PCs, and baristas using TVSS destruction devices showed that the incandescent bulbs were melted or broken in glass bulbs.

The computer was not restarted when the electronic parts such as the barista and the condenser exploded in the power supply, the wiring got burnt, and the power was turned off and then turned on again. Even if the barista is connected in parallel from 1 to 5, the breakage is unconditionally short-circuited, the barista component itself is melted, and the undamaged barista heats badly and is external, so it cannot be reused.

The capacity of TVSS destroyer designed and manufactured for self test is 5KVA + 3KVA.

Primary 110, 110V Secondary 0,3300,6600 / 0,3300,6600 V Phase / Freq 1Φ50 / 60Hz Model No 232-40 Capacity is 5KVA

Example 1-5 is a list tested by an authorized device and Example 6-9 is a list created by breaking with a self-destructive tester.

As described above, the present invention provides a computer TVSS for supplying impulse electricity of transient voltages of 6,000 V, (3,000 A) and 8-20 mA to a power supply while a computer program is running with power supplied to an AC 220V input terminal (1-3). Even if it is applied, the computer device connected to the secondary side of the TVSS becomes a low power impulse and operates normally. When the transient electricity is detected at 2-3KA, 3ms or more in the current control unit 30 and overheated at 150 ° C or higher in NTC1, power communication is performed. After a down, it is restarted without any damage. The modem device connected to the communication unit output (8-9) also has no damage to the 4,000V impulse electricity during communication.

In order to test the abnormality of the present invention, the TVSS destroyed the PC twice with its own dedicated device for destroying and destroying 12-50 bulbs and breaking 12-50 baristas, and connecting the TVSS with the above breakdown voltage and time. The bulb is protected more than 24 times with one light bulb 110V, 60W, and the PC has been experimented with the protection of 25 times more than the power supply.

The effect is good because the Internet and computer users can free themselves from the stress of transient surges that do not know when they will be entered, and can concentrate on reaching their desired goals.

Claims (4)

In the TVSS circuit for protecting the Internet computer necessary for supplying power and communication, the computer uses the Internet. The power supply input / output units (1-3, 4-5) and the communication input / output units (6-7, 8-9) are externally provided. Is configured with plug recognition and protects the computer from excessive power to the power supply and communication line. The surge suppressor 31-48 to remove and the transient electricity breaker 14-15 to cut off the contact when the amount of power exceeds the breakdown value and the current amount generated when the surge is suppressed. TVSS, characterized in that the control unit (28-30) is configured to protect the computer when using the Internet from excessive surge electricity. The power input (1-3), power output (1a, 4-5), communication input (6-7), communication output (8-9) in the configuration of the external connection power supply, communication input and output plug recognition ) Inlet and Outlet of the power supply and Inlet and Outlet of communication are installed on one side for easy removal and wiring arrangement. External I / O terminal block using 1 and terminal 6 of the pins and 2 and 5 outlets 2. The transient surge interruption of the transient electrical breaker at one of the power supply 1-3 and the communication 6-7 in the transient breaker 14-15 which cuts off the contact when the amount of power of the transient electricity is greater than the breakdown value. Blocking circuit, characterized in that to cut off the power and communication at the same time The method of claim 1, wherein the configuration of the current sensing control unit (28-30) is characterized in that the detection of the normal mode common mode overcurrent of the power supply communication unit with a single CT and the power supply of the control unit 30 is connected to the power output (4-5). Current sensing control circuit