KR200208924Y1 - TTB for controlling ASS - Google Patents

Abstract

The present invention receives the three-phase power input from the instrument transformer to detect the low voltage, phase and reverse phase to control the ASS of the high-voltage current input stage. The apparatus of the present invention includes a ASS control means for controlling the switch on / off of the ASS by detecting the low voltage and phase and reverse phase of the detected three-phase voltage by receiving the three-phase power from the instrument transformer. According to the present invention, it is possible to display an abnormality of voltage and current, and to block an input current even at low voltage, phase loss, and reverse phase.

Description

Terminal block for controlling ASS {TTB for controlling ASS}

The present invention relates to a terminal block of a power supply device, and more particularly, a three-phase power input from an instrument transformer detects a low voltage, an open phase and a reverse phase, and automatically detects a fault section of an input terminal of a high voltage current. (Hereinafter referred to as ASS).

In general, the power supply unit receives a high voltage current and converts it into a low voltage current through a transformer to supply power. Such a power supply device includes an integrated altimeter to measure the amount of power in the process of receiving power from the high voltage current through the transformer, and also includes an instrument transformer for providing a driving voltage supplied to the integrated power meter. In addition, the terminal block for detecting the abnormality of the voltage output from the instrument transformer, and the input terminal of the high voltage current is also provided with an ASS for blocking the over current is detected when the high voltage current.

However, such a conventional power supply device was not able to detect low voltage, phase loss and reverse phase other than the function of blocking the over current when an over current was detected, and only displaying the abnormal voltage or current at the terminal block. There was no.

Accordingly, an object of the present invention is to provide a terminal block for controlling the ASS of the input terminal of the high-voltage current by detecting the low voltage, phase-opening and reverse phase before the power output from the power supply is supplied to solve the above problems Is in.

1 is a view showing a power supply device including a terminal block according to an embodiment of the present invention,

2 is a detailed block diagram of the terminal block of FIG. 1;

* Explanation of symbols for main parts of the drawings

211: low voltage and phase detection unit 212: voltage abnormality detection unit

213: ASS control signal generator 214: reverse phase detector

The terminal block for controlling the ASS according to the present invention for achieving the above object is to control the on / off of the ASS by detecting the low voltage and phase and reverse phase of the detected three-phase voltage by receiving the three-phase power from the instrument transformer ASS control means for.

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

1 is a view showing a power supply including a terminal block according to an embodiment of the present invention.

1 includes an ASS 10 that automatically receives a high voltage current and automatically opens and closes to block it when an overcurrent occurs, and a transformer 12 that converts the high voltage current into a low voltage current and supplies power thereto. In addition, FIG. 1 includes an instrument transformer 11 for converting a current supplied to a transformer 12 into a voltage for driving an integrated power meter 14 and supplying it to the computer power meter 14, and an instrument transformer 11. It includes a terminal block 13 to inform the ASS (10) to determine the abnormality of.

In FIG. 1, the ASS 10 receives a high voltage current and turns on / off a switch depending on whether the current is an overcurrent. In the case of overcurrent, the switch is turned off to cut off the overcurrent. Otherwise, the overcurrent is supplied to the transformer 12 via the instrument transformer 11. The transformer 12 converts the high voltage into a low voltage to supply power to the consumer. Here, the instrument transformer 11 outputs a voltage for driving the integrated power meter 14, and the integrated power meter 14 measures the amount of power through monitoring current. On the other hand, the terminal block 13 receives the three-phase power input from the instrument transformer 11 to indicate whether there is an abnormality, as well as detect the low voltage, phase and reverse phase, switch off the ASS (10) to input high-voltage current To block.

Hereinafter, the operation of the terminal block 13 will be described in more detail with reference to FIG. 2.

FIG. 2 is a detailed block diagram of the terminal block of FIG. 1.

2 includes a three-phase voltage detector 21 and a three-phase current detector 24 for detecting three-phase voltage and three-phase current from an input three-phase power source, respectively. In addition, the voltage phase detector 22 that receives the three-phase voltage from the three-phase voltage detector 21 to detect the voltage frequency, and the voltage frequency supplied from the voltage frequency detector 22 to detect the reverse phase to detect the reverse phase It includes a reverse phase detection unit 214 for outputting. In addition, it includes a current abnormality detection unit 25 for receiving the three-phase current from the three-phase current detection unit 24 to detect the presence of a current abnormality. On the other hand, according to the detection signal supplied from the low voltage and phase detection unit 211 and the low voltage and phase detection unit 211 which receives the three-phase voltage from the three-phase voltage detector 21 and detects low voltage and phase-out and outputs a detection signal. When the detection signal and the reverse phase detection signal from the reverse phase detection unit 214 are input from the voltage abnormality detection unit 212 and the voltage abnormality detection unit 212 to detect whether or not the voltage is abnormal, the ASS 10. It includes an ASS control signal generator 213 for generating a control signal to inform this. The apparatus also includes an abnormality detection display section 23 for displaying the abnormal phase detection section 214, the current abnormality detection section 25, and the voltage abnormality detection section 212 upon abnormality detection.

The low voltage and phase detection unit 211, the voltage abnormality detection unit 212, the ASS control signal generation unit 213, and the reverse phase detection unit 214 indicated by dashed lines in FIG. 10 shows an ASS control means 20 for controlling.

Hereinafter, the operation of the ASS control means 20 which is the technical idea in the present invention will be mainly described.

In FIG. 2, the three-phase voltage detector 21 receiving the three-phase power from the instrument transformer 11 detects the three-phase voltage and outputs the three-phase voltage to the voltage frequency detector 22 and the low voltage and phase detection unit 211. The voltage frequency detector 22 detects the voltage frequency and outputs it to the reverse phase detector 214. The reverse phase detection unit 214 receives a voltage frequency and outputs a reverse phase detection signal to the ASS control signal generator 213 when the reverse phase is detected, and outputs the abnormal phase detection signal to the abnormal detection display unit 23 to indicate whether or not the abnormal phase is detected. In addition, the ASS control signal generation unit 213 outputs a control signal for switching off the ASS 10 when the reverse phase detection signal is input from the reverse phase detection unit 214. Then, the ASS 10 is switched off to block the high voltage current input in reverse phase.

On the other hand, the low voltage and phase detection unit 211 receiving the three-phase voltage from the three-phase voltage detection unit 21 receives the three-phase voltage and detects a low voltage of less than 80V and no phase loss. As a result of detection, when a low voltage and an open phase are detected, the detection signal is output to the voltage abnormality detecting unit 212. The voltage abnormality detecting unit 212 detects an abnormality in the three-phase voltage and outputs a detection signal when a detection signal indicating that a low voltage or an open phase is detected from the low voltage and phase detection unit 211 is input. The ASS control signal generator 213 outputs a control signal for turning off the switch to the ASS 10 according to a detection signal input from the voltage abnormality detector 212. Then, the ASS 10 is switched off to cut off the high voltage current input when the low voltage and the phase open.

Therefore, according to the present invention, it is possible to indicate whether an abnormality of the voltage current is provided, and to cut off the input current even at low voltage and phase loss and reverse phase.

Claims (4)

In the terminal block of the power supply device including an ASS, instrument transformer for switching on / off the input high voltage current, ASS control means for controlling the switch on / off of the ASS by detecting the low voltage of the three-phase voltage and the phase and reverse phase detected by receiving a three-phase power from the instrument transformer for controlling the ASS Terminal block. The method of claim 1, wherein the ASS control means A low voltage and phase detection unit for receiving a three-phase voltage and detecting low voltage and phase loss and outputting a detection signal; A voltage abnormality detector for detecting an abnormality of the voltage according to a detection signal supplied from the low voltage and the phase detection detector and outputting a detection signal; A reverse phase detection unit receiving a three-phase voltage and detecting a reverse phase to output a reverse phase detection signal; And And a ASS control signal generator for outputting a control signal informing the ASS when a detection signal from the voltage abnormality detection unit and a reverse phase detection signal are input from the reverse phase detection unit. The method of claim 2, wherein the ASS control signal generation unit And outputting a control signal for switching off the ASS when the detection signal is input. The method of claim 2, wherein the ASS control signal generation unit And a control signal for turning off the ASS when the reversed phase detection signal is input.