CN216747894U - Direct current resistance tester detection system - Google Patents

Abstract

The utility model discloses a direct current resistance tester detecting system, including the operation interface, the surface of operation interface is close to the rear end edge and is provided with the equipment name sign, turn right respectively from a left side on the surface of operation interface and the front end of equipment name sign and have current display table and voltmeter, one side that current display table was kept away from to the voltmeter and the surface of operation interface are provided with ground terminal, current display table's front end and operation interface's fixed surface install time relay, the front end of voltmeter and operation interface's fixed surface install the doubly-pressed meter, and time relay and doubly-pressed meter are located same water flat line. The utility model is formed by applying the latest power electronic technology, adopting the advanced PWM modulation technology and the high-power MOSFET device and performing intermediate frequency voltage doubling rectification; the system has the advantages of small ripple factor, stable output, safety, reliability and simple and convenient operation.

Description

Direct current resistance tester detection system

Technical Field

The utility model relates to a resistance test technical field specifically is a direct current resistance tester detecting system.

Background

The tester for testing the direct current resistance of the transformer is a high-precision upgrading product replacing a direct current single-arm bridge and a double-arm bridge, the measurement of the direct current resistance of a transformer winding is an important test item, in the 'test regulation of power equipment', the direct current resistance of the transformer winding needs to be measured when the 'regulation' stipulates the conditions of transformer handover, major repair, minor repair, tap position change, fault check, pre-test and the like, and the purpose is that: the method comprises the steps of checking the welding quality of a lead and a lead in a winding, checking whether contact of each position of a tap switch is good or not, checking whether a winding or a lead-out wire has a broken part or not, checking the correctness of a parallel branch, checking whether the condition that one or more parts of the winding formed by a plurality of parallel leads are broken or not and the phenomenon that short circuit exists between layers and turns or not exist, wherein the current equipment for a direct current withstand voltage test and a leakage current test lacks reliable overvoltage, overcurrent and zero-position closing protection functions, and is complex in operation and insufficient in safety and reliability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a direct current resistance tester detecting system to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: in order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a direct current resistance tester detecting system, includes operation interface, operation interface's surface is close to the rear end edge and is provided with equipment name sign, turn right respectively from a left side and install current display table and voltmeter on operation interface's the surface of operation interface's surface and the front end of equipment name sign, one side that current display table was kept away from to the voltmeter and operation interface's surface are provided with ground connection terminal, current display table's front end and operation interface's fixed surface install time relay, voltmeter's front end and operation interface's fixed surface install the voltage doubling table, and time relay and voltage doubling table are on same water flat line, signal input socket and measurement output socket have been seted up respectively from the top down to one side that time relay was kept away from to the voltage doubling table and operation interface's surface from the top right side, time relay and voltage doubling table's front end and operation interface's surface turn right and are provided with power socket respectively, The power socket, the timing switch key, the indicating lamp area and the front end of the latch key and the surface of the operation interface are provided with key button areas close to the edge of the front end.

Preferably, the key button area comprises a power switch key, a start key, a stop key, an overvoltage setting knob, a voltage coarse adjustment knob and a voltage fine adjustment knob from left to right.

Preferably, the indicator light area comprises a power indicator light, a zero indicator light, an overvoltage indicator light and an overcurrent indicator light from left to right.

Preferably, the voltage multiplying table is a 0.75 voltage multiplying table.

Preferably, the latch key is a 0.75-time voltage latch key.

Compared with the prior art, the beneficial effects of the utility model are that:

the direct current resistance tester detection system is formed by applying the latest power electronic technology, adopting the advanced PWM modulation technology and a high-power MOSFET device and performing intermediate-frequency voltage-multiplying rectification; the system has the characteristics of small ripple factor, stable, safe and reliable output, simple and convenient operation, small volume and light weight, and has the multiple protection functions of reliable and sensitive internal overvoltage protection, internal overcurrent protection, external overvoltage protection (the protection voltage can be adjusted), external overcurrent protection or breakdown protection, internal power protection, non-zero start protection and timed audio alarm.

Drawings

Fig. 1 is a schematic view of an operation interface of the present invention.

In the figure: 1. an operation interface; 2. a current display meter; 3. a time relay; 4. a timing switch key; 5. a power outlet; 6. a key button region; 7. a device name identifier; 8. a grounding binding post; 9. a voltmeter; 10. a signal input jack; 11. a pressure doubling meter; 12. a measurement output jack; 13. an indicator light zone; 14. A latch key.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present invention provides an embodiment:

a direct current resistance tester detection system comprises an operation interface 1, an equipment name identifier 7 is arranged on the surface of the operation interface 1 close to the edge of the rear end, a current display meter 2 and a voltmeter 9 are fixedly installed on the surface of the operation interface 1 and the front end of the equipment name identifier 7 from left to right respectively, a grounding binding post 8 is arranged on one side of the voltmeter 9 far away from the current display meter 2 and the surface of the operation interface 1, a time relay 3 is fixedly installed on the front end of the current display meter 2 and the surface of the operation interface 1, a voltage doubling meter 11 is fixedly installed on the front end of the voltmeter 9 and the surface of the operation interface 1, the time relay 3 and the voltage doubling meter 11 are located on the same horizontal line, a signal input socket 10 and a measurement output socket 12 are respectively arranged on one side of the voltage doubling meter 11 far away from the time relay 3 and the surface of the operation interface 1 from top to bottom, a power socket 5, a voltage doubling meter 11 are respectively arranged on the front end of the time relay 3 and the front end of the voltage doubling meter 11 and the surface of the operation interface 1 from left to right respectively, The timing switch key 4, the indicator light area 13 and the latch key 14, the front ends of the power socket 5, the timing switch key 4, the indicator light area 13 and the latch key 14 and the surface of the operation interface 1 close to the front end edge are provided with the key button area 6, the signal input socket and the measurement output socket 12 are connected with the voltage doubling device cable socket by special cables before detection, the integrity of the cable socket is checked before use, and the connecting cable is not short-circuited or broken; the pressure doubling cylinder should not have condensation phenomenon; connecting the control box ground with the ground end of the voltage doubling device by using a copper wire with the thickness of more than 2.5mm2, reliably grounding, turning on a power switch during testing, enabling a voltmeter 9, a current display meter 2 and a voltage doubling meter 11 to display zero values, turning an overvoltage setting knob to the bottom clockwise, turning a voltage coarse adjustment knob and a voltage fine adjustment knob to the zero positions anticlockwise, turning a zero position indicator light on, lightly pressing a start key, turning a power indicator light (red) on, turning the red indicator light off if the start key is pressed, and turning the voltage fine adjustment knob to the zero positions if the voltage coarse adjustment knob and the voltage fine adjustment knob are not at the zero positions, turning the voltage coarse adjustment knob clockwise, turning the voltage fine adjustment knob to the required voltage when the voltage is close to the required voltage value, wherein the voltage display value unit is kV, the current display value unit is mA, and turning the voltage setting knob anticlockwise, turning off the high voltage, turning off the red indicator light, turning on the overvoltage indicator light, and setting the instrument according to the required output voltage, namely automatically cutting off the high voltage when the output reaches the required voltage value, and protecting the overvoltage; if the setting knob is not adjusted, the voltage value can only be increased to the setting voltage value every time, if the voltage is required to be increased to the rated value, the overvoltage setting knob must be adjusted to the maximum clockwise, the 0.75-time voltage display latch button is pressed down in the test process, the display value of the 0.75-time voltage display meter is locked, and the display value is maintained inconvenient, so that the overvoltage setting knob can be conveniently used as a reference voltage in the test of the zinc oxide arrester, the timing switch button 4 is pressed down at any time, the time relay 3 is started, the buzzer sends out an alarm sound when the preset time is reached, in the test process, if the load current exceeds 0-10% of the rated output current of the instrument, the overcurrent indicator lamp is lightened, the overcurrent protection is realized, the test article and the instrument are prevented from being damaged, after the test is finished, the voltage coarse adjustment knob and the voltage fine adjustment knob are adjusted anticlockwise, the zero position is rotated, the meter 9 slowly returns to the zero position, the zero indicator light is on, when the three display meters display zero values, the stop button is lightly pressed, the red indicator light is turned off, then the power switch is turned off, when the capacitance of the tested object is large, the voltage coarse adjustment and the fine adjustment are both adjusted to the zero position, the output voltage display meter cannot return to zero after delay, the stop button is firstly pressed, then the power switch is turned off, then the tested object is discharged by the discharge rod, and then the connection wire of the tested object is removed.

Further, the key button area 6 includes a power switch key, a start key, a stop key, an overvoltage setting knob, a voltage coarse adjustment knob, and a voltage fine adjustment knob from left to right, respectively.

Further, the indicator light area 13 includes a power indicator light, a zero indicator light, an overvoltage indicator light and an overcurrent indicator light from left to right.

Further, voltage doubler table 11 is a 0.75 voltage doubler table.

Further, latch key 14 is a 0.75 time voltage latch key.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. A direct current resistance tester detection system, includes operation interface (1), its characterized in that: the surface of the operation interface (1) is provided with an equipment name identifier (7) close to the edge of the rear end, the surface of the operation interface (1) and the front end of the equipment name identifier (7) are respectively fixedly provided with a current display meter (2) and a voltmeter (9) from left to right, one side of the voltmeter (9) far away from the current display meter (2) and the surface of the operation interface (1) are provided with a grounding terminal (8), the front end of the current display meter (2) and the surface of the operation interface (1) are fixedly provided with a time relay (3), the front end of the voltmeter (9) and the surface of the operation interface (1) are fixedly provided with a voltage doubling meter (11), the time relay (3) and the voltage doubling meter (11) are positioned on the same horizontal line, one side of the voltage doubling meter (11) far away from the time relay (3) and the surface of the operation interface (1) are respectively provided with a signal input socket (10) and a measurement output socket (12) from top to bottom, the front ends of the time relay (3) and the pressure doubling gauge (11) and the surface of the operation interface (1) are respectively provided with a power socket (5), a timing switch key (4), an indicator light area (13) and a latch key (14) from left to right, and the front ends of the power socket (5), the timing switch key (4), the indicator light area (13) and the latch key (14) and the surface of the operation interface (1) are provided with a key button area (6) close to the edge of the front end.

2. The dc resistance tester detection system of claim 1, wherein: the key button area (6) comprises a power switch key, a start key, a stop key, an overvoltage setting knob, a voltage coarse adjustment knob and a voltage fine adjustment knob from left to right.

3. The dc resistance tester detection system of claim 1, wherein: the indicator light area (13) comprises a power indicator light, a zero indicator light, an overvoltage indicator light and an overcurrent indicator light from left to right.

4. The dc resistance tester detection system of claim 1, wherein: the voltage multiplying meter (11) is a 0.75 voltage multiplying display meter.

5. The dc resistance tester detection system of claim 1, wherein: the latch key (14) is a 0.75 time voltage latch key.

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