CN102305897A - Relay protecting exit tester - Google Patents

Abstract

The invention discloses a relay protecting exit tester which comprises a shell, a power supply switch, a test probe and a circuit board, wherein an anode of a power supply is connected with a reset button; a cathode of the power supply is connected with the power supply switch; the reset button is respectively connected with contact points of KC1-3, KC1-5, KC1-7, KC2-3, KC2-5, KC2-7, KC3-3 and KC3-5; KC1-4 is connected with KC1-1; KC1-6 is connected with KC2-9; KC2-10 is connected with the cathode of the power supply by KED1; KC1-8 is connected with KT1-1; KC2-4 is connected with KC2-1; KC2-6 is connected with KC3-9; KC3-10 is connected with the cathode of the power supply by LED2; KC2-8 is connected with KT2-1; KC3-4 is connected with KC3-1; KC3-6 is connected with the cathode of the power supply by LED3; the test probe is connected with KC1-4, KT1-3 and KT2-3; KT1-4 is connected with KC2-4; KT2-4 is connected with KC3-4; and KC1-2, KT1-2, KC2-2, KT2-2 and KC3-2 is connected with the cathode of the power supply. The relay protecting exit tester has clear action exit condition and improves the efficiency of relay protecting exit test.

Description

Relay protection outlet tester

technical field

The invention relates to a device capable of testing the outlet of a relay protection device, in particular to a tester for the outlet of a relay protection device.

Background technique

At present, most of the methods for testing the relay protection outlet are to use a multimeter to measure the potential of the relay protection outlet. When the protective device operates, a pulse of positive potential will be sent instantaneously at the outlet of the protective device, which generally lasts for about 0.1-0.5 seconds. The disadvantage of this detection method is that when using a multimeter to measure, sometimes the indication of the multimeter is not easy to observe because the time of the positive potential is too short, resulting in inaccurate testing; for more complex protection devices, such as 220kV and above lines Protection, main transformer protection, etc., there are many outlet circuits, and the outlet logic is complicated. If you use a multimeter to measure at this time, you need to do a lot of repetitive tests and multiple measurements on the relay protection device, so according to the traditional method. A comprehensive verification of the correctness of the outlet of the relay protection device requires a lot of time and manpower to do the test, which prolongs the verification time of the relay protection device of the power supply equipment, is time-consuming and laborious, and greatly reduces work efficiency.

Contents of the invention

The purpose of the present invention is to provide a relay protection exit tester with simple structure and convenient use, which can not only improve the speed and accuracy of testing the exit of relay protection devices, but also clearly indicate complex exit logic.

In order to achieve the above purpose, the technical solution adopted in the present invention is: the relay protection outlet tester, including a housing, a power switch, a test probe and a circuit board, is characterized in that: the positive pole of the power supply is connected to the reset button FA, and the negative pole of the power supply is connected to the reset button FA. The power switch K and the reset button FA are respectively connected with the KC1-3 contact, KC1-5 contact, KC1-7 contact of the intermediate relay KC1, the KC2-3 contact, KC2-5 contact, KC2-7 contact of the intermediate relay KC2, and the intermediate relay KC3 The KC3-3 contact and KC3-5 contact of the intermediate relay KC1 are connected, the KC1-4 contact of the intermediate relay KC1 is connected with the KC1-1 contact, the KC1-2 contact is connected with the negative pole of the power supply, the KC1-6 contact of the intermediate relay KC1 is connected with the intermediate relay KC2 The KC2-9 contacts are connected, the KC2-10 contact of the intermediate relay KC2 is connected to the positive pole of LED1 (yellow), the negative pole of LED1 (yellow) is connected to the negative pole of the power supply through the current limiting resistor R1, the KC1-8 contact of the intermediate relay KC1 is connected to the time relay KT1 The KT1-1 contact of the time relay KT1 is connected to the negative pole of the power supply, the KC2-4 contact of the intermediate relay KC2 is connected to the KC2-1 contact, the KC2-2 contact is connected to the negative pole of the power supply, and the KC2- of the intermediate relay KC2 is connected to the negative pole of the power supply. The 6 contacts are connected to the KC3-9 contact of the intermediate relay KC3, the KC3-10 contact of the intermediate relay KC3 is connected to the positive pole of LED2 (green), the negative pole of LED2 (green) is connected to the negative pole of the power supply through the current limiting resistor R2, and the KC2 of the intermediate relay KC2 The -8 contact is connected to the KT2-1 contact of the time relay KT2, the KT2-2 contact of the time relay KT2 is connected to the negative pole of the power supply, the KC3-4 contact of the intermediate relay KC3 is connected to the KC3-1 contact, and the KC3-2 contact is connected to the negative pole of the power supply , the KC3-6 contact of the intermediate relay KC3 is connected to the positive pole of LED3 (red), the negative pole of LED3 (red) is connected to the negative pole of the power supply through the current limiting resistor R3, and the test probe is respectively connected to the KC1-4 contact of the intermediate relay KC1 and KT1 of the time relay KT1 -3 contacts, KT2-3 contacts of time relay KT2 are connected, KT1-4 contacts of time relay KT1 are connected with KC2-4 contacts of intermediate relay KC2, KT2-4 contacts of time relay KT2 are connected with KC3- of intermediate relay KC3 4 contacts are connected.

The present invention is also implemented through the following measures: the power supply adopts a 220-volt DC power supply, the circuit board is fixed in the casing, and the power switch is arranged on the front panel of the casing.

The reset button FA, LED1 (yellow), LED2 (green) and LED3 (red) are all arranged on the front panel of the housing.

The circuit board can be provided with a plurality of identical test loops, and its corresponding reset buttons FA, LED1 (yellow), LED2 (green) and LED3 (red) are all set on the front panel of the housing, generally with 1 -20 test loops are advisable.

The beneficial effect of the invention is that the wiring is simple, practical and convenient, the situation of the action outlet is clear at a glance, and the efficiency of the relay protection outlet test can be greatly improved.

Description of drawings

Fig. 1 is a schematic circuit diagram of a test loop of the present invention.

Fig. 2 is a schematic diagram of the contacts of the intermediate relay of the present invention.

Fig. 3 is a schematic diagram of the contacts of the time relay of the present invention.

Fig. 4 is a schematic front view of the front panel of the present invention.

Detailed ways

Make the present invention with reference to accompanying drawing 1, Fig. 2, Fig. 3 and Fig. 4. The relay protection outlet tester includes a housing 1, a power switch 2, a test probe 7 and a circuit board, the circuit board is fixed in the housing 1, and the power switch 2 is arranged on the front panel of the housing 1, and is characterized in that: The positive pole of the power supply is connected to the reset button FA3, the negative pole of the power supply is connected to the power switch K2, and the reset button FA3 is connected to the KC1-3 contact, KC1-5 contact, KC1-7 contact of the intermediate relay KC1, KC2-3 contact, KC2- 5 contacts, KC2-7 contacts, KC3-3 contacts of intermediate relay KC3, KC3-5 contacts are connected, KC1-4 contacts of intermediate relay KC1 are connected with KC1-1 contacts, KC1-2 contacts are connected to the negative pole of power supply, intermediate relay The KC1-6 contact of KC1 is connected to the KC2-9 contact of the intermediate relay KC2, the KC2-10 contact of the intermediate relay KC2 is connected to the positive pole of LED1 (yellow) 4, and the negative pole of LED1 (yellow) 4 is connected to the negative pole of the power supply through the current limiting resistor R1 , the KC1-8 contact of the intermediate relay KC1 is connected to the KT1-1 contact of the time relay KT1, the KT1-2 contact of the time relay KT1 is connected to the negative pole of the power supply, the KC2-4 contact of the intermediate relay KC2 is connected to the KC2-1 contact, KC2 The -2 contact is connected to the negative pole of the power supply, the KC2-6 contact of the intermediate relay KC2 is connected to the KC3-9 contact of the intermediate relay KC3, the KC3-10 contact of the intermediate relay KC3 is connected to the positive pole of LED2 (green) 5, and the LED2 (green) 5 The negative pole is connected to the negative pole of the power supply through the current limiting resistor R2, the KC2-8 contact of the intermediate relay KC2 is connected to the KT2-1 contact of the time relay KT2, the KT2-2 contact of the time relay KT2 is connected to the negative pole of the power supply, and the KC3-4 contact of the intermediate relay KC3 Connect to the KC3-1 contact, KC3-2 contact to the negative pole of the power supply, the KC3-6 contact of the intermediate relay KC3 to connect the positive pole of LED3 (red) 6, the negative pole of LED3 (red) 6 to the negative pole of the power supply through the current limiting resistor R3, test The probe 7 is respectively connected to the KC1-4 contact of the intermediate relay KC1, the KT1-3 contact of the time relay KT1, and the KT2-3 contact of the time relay KT2, and the KT1-4 contact of the time relay KT1 is connected to the KC2-4 contact of the intermediate relay KC2 The KT2-4 contact of the time relay KT2 is connected with the KC3-4 contact of the intermediate relay KC3.

Described power supply adopts 220 volts direct current power supply.

The reset button FA3 , LED1 (yellow) 4 , LED2 (green) 5 and LED3 (red) 6 are all arranged on the front panel of the housing 1 .

The circuit board can be provided with a plurality of identical test circuits, and its corresponding reset button FA, LED1 (yellow), LED2 (green) and LED3 (red) are all arranged on the front panel of the housing 1, so that the Simultaneous detection of multiple ports, more flexible and convenient to use, generally 1-20 test loops are appropriate.

When the present invention is in use, take the first road as an example to illustrate the situation that the tester tests the multiple actions of one outlet of the protection device: before the test of the relay protection device, first connect the present invention to the protection device that is consistent with the tested protection device. 220V DC power supply, connect the test probe 7 of the tester to the first outlet pressure plate of the relay protection device.

Assuming that the protection device operates for the first time, and the first outlet of the protection device, there is an instantaneous positive potential output on the first pressure plate, as shown in the schematic diagram of Figure 1. At this time, KC1-1 and KC1-2 of the intermediate relay KC1 There is 220V DC voltage at both ends of the terminal, the intermediate relay KC1 starts, and the KC1-3 and KC1-4, KC1-5 and KC1-6, KC1-7 and KC1-8 contacts on the intermediate relay KC1 are all closed at the same time; KC1- 3 and KC1-4 contact closure is used to keep the intermediate relay KC1 continuous action after the instantaneous voltage ends; KC1-5 and KC1-6 contact closure is used to light the LED1 light (yellow); KC1-7 and KC1-8 contact closure, It is used to start the time relay KT1; after the time relay KT1 is started, after a short delay, the contacts KT1-3 and KT1-4 of the time relay KT1 are closed to prepare for the next protection device action outlet.

If the protection device operates for the second time and the first circuit of the protection device exits for the second time, the pressure plate of the first circuit will have an instantaneous positive potential output, and at this time the contacts KT1-3 and KT1-4 of the time relay KT1 are closed , There is voltage at both ends of KC2-1 and KC2-2 terminals of the intermediate relay KC2, the intermediate relay KC2 starts, KC2-3 and KC2-4, KC2-5 and KC2-6, KC2-7 and KC2 on the intermediate relay KC2 -8 contacts are closed at the same time, contacts KC2-9 and KC2-10 are disconnected; KC2-3 and KC2-4 contacts are closed to keep the intermediate relay KC2 continuous action after the end of the instantaneous voltage; KC2-5 and KC2-6 contacts are closed Used to light up the LED light 2 (green); KC2-7 and KC2-8 contact closure is used to start the time relay KT2; after the time relay KT2 starts, after a short delay, close the contacts KT2-3 and KT2 of the time relay KT2 -4, ready for the exit of the next protection device action; the KC2-9 and KC2-10 contacts of the intermediate relay KC2 are disconnected, and the LED light 1 (yellow) is powered off and extinguished.

If the protection device operates for the third time, and the first circuit of the protection device exits for the third time, then the pressure plate of the first circuit has an instantaneous positive potential output for the third time, at this time, the contacts KT2-3 and KT2-4 of the time relay KT2 Closed, there is voltage at both ends of the KC3-1 and KC3-2 terminals of the intermediate relay KC3, the intermediate relay KC3 starts, and the KC3-3, KC3-4, KC3-5 and KC3-6 contacts on the intermediate relay KC3 are closed at the same time , the contacts KC3-9 and KC3-10 are disconnected; the KC3-3 and KC3-4 contacts are closed to keep the instantaneous voltage, and the intermediate relay KC3 continues to act; the KC3-5 and KC3-6 contacts are closed to light the LED lights 3 (red); the KC3-9 and KC3-10 contacts of the intermediate relay KC3 are disconnected, and the LED2 light (green) is powered off and extinguished.

This principle only describes the situation of 3 times, and it can also be added. The principle is the same. For the general type of relay protection device, the function of 3 times in a row can meet the requirements.

The following describes how the tester tests the multiple outlets of the protection device:

Taking 6 detection circuits as an example, the connection relationship of each detection circuit is the same. First, the present invention is connected to a 220-volt DC power supply consistent with the protection device to be tested, and then the corresponding test probes 7 are respectively connected to the protection device 6 According to the above analysis of the exit situation of the protection device action, it can be concluded as follows: Assuming that the protection device operates for the first time, the first, second and third exits of the protection device correspond to the tester The LED1 (yellow) lights of the first, second and third roads on the board are all on, and the LED2 (green) and LED3 (red) are not on; the LED1 (yellow), LED2 (green) and LED3 of the fourth, fifth and sixth roads (red) lights are off.

If the protective device operates for the second time, and the first, second, third, fourth, and fifth channels of the protective device exit at the same time, it corresponds to the LED2 of the first, second, and third channels on the tester (green ) are on, LED1 (yellow) and LED3 (red) are off; LED1 (yellow) on the fourth and fifth circuits are on, LED2 (green) and LED3 (red) are off. The LED1 (yellow), LED2 (green), and LED3 (red) lights of the sixth road are all off.

By observing the status of the LED lights, you can clearly judge the correct condition of the protective device's action outlet; if there are many outlet circuits of the protective device, it can better reflect the advantages of convenience and high efficiency of this tester.

When you need to reset after finishing the test, just press the reset button switch FA.

Claims (4)

1. relay protection exports tester; Comprise housing (1); Power switch (2); Test probe (7) and circuit board; It is characterized in that: the positive pole of power supply meets involution button F A (3); Power cathode meets power switch K (2); Involution button F A (3) respectively with the KC1-3 contact of auxiliary reclay KC1; The KC1-5 contact; The KC1-7 contact; The KC2-3 contact of auxiliary reclay KC2; The KC2-5 contact; The KC2-7 contact; The KC3-3 contact of auxiliary reclay KC3; The KC3-5 contact is connected; The KC1-4 contact of auxiliary reclay KC1 is connected with the KC1-1 contact; The KC1-2 contact connects power cathode; The KC1-6 contact of auxiliary reclay KC1 is connected with the KC2-9 contact of auxiliary reclay KC2; The KC2-10 contact of auxiliary reclay KC2 connects the positive pole of LED1 (4); The negative pole of LED1 (4) connects power cathode through current-limiting resistance R1; The KC1-8 contact of auxiliary reclay KC1 is connected with the KT1-1 contact of time relay KT1; The KT1-2 contact of time relay KT1 connects power cathode; The KC2-4 contact of auxiliary reclay KC2 is connected with the KC2-1 contact; The KC2-2 contact connects power cathode; The KC2-6 contact of auxiliary reclay KC2 is connected with the KC3-9 contact of auxiliary reclay KC3; The KC3-10 contact of auxiliary reclay KC3 connects the positive pole of LED2 (5); The negative pole of LED2 (5) connects power cathode through current-limiting resistance R2; The KC2-8 contact of auxiliary reclay KC2 is connected with the KT2-1 contact of time relay KT2; The KT2-2 contact of time relay KT2 connects power cathode; The KC3-4 contact of auxiliary reclay KC3 is connected with the KC3-1 contact; The KC3-2 contact connects power cathode; The KC3-6 contact of auxiliary reclay KC3 connects the positive pole of LED3 (6); The negative pole of LED3 (6) connects power cathode through current-limiting resistance R3; Test probe (7) respectively with the KC1-4 contact of auxiliary reclay KC1; The KT1-3 contact of time relay KT1; The KT2-3 contact of time relay KT2 is connected; The KT1-4 contact of time relay KT1 is connected with the KC2-4 contact of auxiliary reclay KC2, and the KT2-4 contact of time relay KT2 is connected with the KC3-4 contact of auxiliary reclay KC3.

2. relay protection outlet tester according to claim 1, it is characterized in that: described power supply adopts 220 volts of direct supplys; Described circuit board is fixed in the housing (1), and power switch (2) is located on the front panel of housing (1).

3. relay protection outlet tester according to claim 1, it is characterized in that: described involution button F A (3), LED1 (4), LED2 (5) and LED3 (6) are arranged on the front panel of housing (1).

4. relay protection outlet tester according to claim 1, it is characterized in that: described circuit board is provided with 1-20 identical test loop, and its corresponding involution button F A, LED1, LED2 and LED3 are arranged on the front panel of housing (1).

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