CN104360139A - Tong-type ammeter with split measuring function - Google Patents

Abstract

The invention relates to a clamp ammeter with separate measuring function. It includes a measuring handle (9) and a fixed pincer (7) fixed on the measuring handle (9), and is characterized in that it also includes a split telescopic pincer, and the signal output end Both the signal output ends of the fixed pincers (7) are connected to the measuring unit in the measuring handle (9) through a toggle switch (8); ) and the right pliers body (2) are hinged, and the signal output end of the left caliper body (1) tail or the right pliers body (2) tail is connected to the measuring plug (6) by the retractable test line (4) connected, and a reel (5) is installed on the retractable test line (4). The invention overcomes the inconvenience in use of the existing clamp ammeter, and provides a novel clamp ammeter with a telescoping function and independent of the measuring handle.

Description

Clamp Ammeter with Separate Measurement Function

technical field

The invention relates to a clamp ammeter with separate measuring function.

Background technique

The online monitoring device is used to monitor the voltage, current, capacitance and other parameters of the main primary equipment in the substation. The current sensor is installed in the collection box installed on the primary equipment body, which is an important part of the monitoring device. However, the acquisition box is generally small in size and installed in a high position. When the tester measures the sensor current, the clamp ammeter cannot be extended in and the measurement cannot be performed, or the data cannot be seen during the measurement, which brings great difficulties to the work of the tester. Big inconvenience.

At present, the existing clamp-on ammeter is used by the test personnel on site, and the following shortcomings are found in the field measurement: 1. The on-site collection box of the on-line monitoring device is small in size. When using the existing clamp-on ammeter, the meter cannot be extended at all. into the collection box. 2. The installation position of the local collection box is relatively high, and the test personnel cannot see the measurement results on the display screen by using the existing clamp ammeter for measurement. 3. The clamp head of the existing clamp-on ammeter cannot move during the measurement, which is greatly restricted, and the measurement is often inaccurate. The existing clamp-on ammeters are found to be inconvenient or impossible to measure during on-site operations, and the measurement accuracy is not high, which greatly affects the efficiency of on-site operations.

Contents of the invention

The object of the present invention is to provide a clamp-on ammeter with separate measurement function, which can greatly improve the efficiency and accuracy of on-site measurement, and reduce the manpower, material resources and time required for on-site operations.

A clamp ammeter with split measurement function, including a measuring handle and a fixed clamp head fixed on the measuring handle, and its special feature is that it also includes a split retractable clamp head, the split retractable clamp Both the signal output end of the head and the signal output end of the fixed pliers head are connected to the measurement unit in the measurement handle through a toggle switch; the split retractable pliers head consists of a left caliper body and a right caliper body hinged The body of the clamp head, and the signal output end of the tail of the left or right clamp body is connected to the measuring plug through a retractable test line, and a reel is installed on the retractable test line, so that the retractable test The line is stretched or shortened.

Wherein the tails of the left tong body and the right tong body are connected by a spring.

Wherein the measuring handle is provided with a wiring port matched with the measuring plug, and the toggle switch is installed on the measuring handle.

The invention overcomes the inconvenience in use of the existing clamp ammeter, and provides a novel clamp ammeter with a telescoping function and independent of the measuring handle. It has the advantages of simple use, high measurement accuracy, not affected by the measurement position, safety and reliability, and convenient use. It can greatly improve the efficiency and accuracy of on-site measurement, and reduce the manpower, material resources and time required for on-site operations.

Description of drawings

Accompanying drawing 1 is the structure schematic diagram of split retractable pincer head in the present invention;

Accompanying drawing 2 is the structural representation of fixed pliers 7 and measuring handle 9 among the present invention;

Accompanying drawing 3 is the circuit schematic diagram of the present invention.

Detailed ways

As shown in Figures 1, 2, and 3, the present invention provides a clamp-on ammeter with a split measurement function, including a measuring handle 9 and a fixed pincer 7 fixed on the measuring handle 9, and also includes a split telescopic Type pliers (referred to as split pliers), the signal output end of the split retractable pliers and the signal output end of the fixed pliers 7 are connected through the toggle switch 8 and the measuring unit in the measuring handle 9 Connection; where the split retractable pliers head includes a pliers body composed of left pliers body 1 and right pliers body 2 hinged, and the signal output end of the left pliers body 1 tail or right pliers body 2 tail is passed through a retractable test line 4 is connected to a measuring plug 6, and a reel 5 is installed on the stretchable test line 4, so that the stretchable test line 4 can be stretched or shortened.

Wherein the tails of the left pliers body 1 and the right pliers body 2 are connected by a spring 3 . In addition, the measuring handle 9 is provided with a wiring port 10 matched with the measuring plug 6 , and the toggle switch 8 is installed on the measuring handle 9 .

The present invention provides a novel retractable clamp ammeter, which is composed of a split retractable clamp head, a fixed clamp head 7 and a measuring handle 9 . The telescopic clamp ammeter is composed of a clamp head body, a fixing screw, a spring 3, a telescopic test line 4 with an insulating sheath, a reel 5 and a measuring plug 6. The fixing screw is used to fix the body of the clamp head, the spring 3 is used to ensure reliable contact between the left clamp body 1 and the right clamp body 2, and the reel 5 is used to realize the stretching and shortening of the retractable test line 4, and its stretching can reach up to 69cm, the shortest 44cm, the measuring plug 6 can be connected with the main body of the measuring handle 9.

Wherein the measuring handle 9 with fixed pincer head 7 can directly adopt an existing conventional clamp ammeter, and measuring unit, display screen are arranged on the measuring handle 9, and the present invention adds a toggle switch 8 and a wiring on it. Mouth 10. The measurement unit is used to realize data calculation, the display screen is used to display the measurement results, the toggle switch 8 can realize the switching measurement between the fixed clamp head 7 and the split retractable clamp head, and the wiring port 10 at the tail can realize split body and flexible clamp head. The electrical connection between the retractable pliers head and the measuring handle 9. Wherein the fixed pincer 7 is inlaid on the upper end of the measuring handle 9 and is closely connected with the measuring handle 9, and can also be measured, and the precision is consistent with that of the split retractable pincer.

The present invention adopts a split connection design, and the clamp ammeter adopts a bidirectional design of the fixed clamp head 7 and the split clamp head. A toggle switch 8 is designed on the measuring handle 9, which can be selected for measurement via the fixed pincer 7 or via the split telescopic pincer. In order to increase the distance of use and improve the convenience of the split clamp head, a retractable test line 4 is installed on the split retractable clamp head, and its tail end is connected with the measuring handle 9 of the clamp ammeter through the measuring plug 6, so that it can be used on the spot. The free measurement of the clamp ammeter is realized through the improvement of the present invention on the basis of the conventional clamp ammeter.

When in use, the split retractable pliers head is inserted into the connection port 10 at the end of the measuring handle 9 through the connection terminal at the end of the retractable test line 4, and the measurement can be realized. At the same time, the toggle switch 8 on the measuring handle 9 can realize free switching between the two measuring modes. Due to the use of split telescopic clamps for measurement, when the installation height of the sensor to be tested is high and the measurement space is small, the measurement can be performed through the split retractable clamps, which greatly shortens the measurement time and improves work efficiency. It also has the advantages of simple structure, practical and convenient, stable measurement accuracy, and convenient portability, which can further improve the reliability and safety of on-site measurement.

Claims (3)

1. A clamp-on ammeter with split measurement function, comprising a measuring handle (9) and a fixed clamp head (7) fixed on the measuring handle (9), characterized in that: it also includes a split retractable clamp Head, the signal output end of the split retractable pliers head and the signal output end of the fixed pliers head (7) are all connected to the measurement unit in the measurement handle (9) through a toggle switch (8); wherein The split retractable pliers head includes a pliers body composed of a hinged left pliers body (1) and a right pliers body (2), and the signal output terminal at the tail of the left pliers body (1) or the right pliers body (2) The stretchable test line (4) is connected with the measuring plug (6), and a reel (5) is installed on the stretchable test line (4), so that the stretchable test line (4) can be stretched or shorten. 2. The clamp ammeter with split measuring function as claimed in claim 1, characterized in that: wherein the tails of the left clamp body (1) and the right clamp body (2) are connected by a spring (3). 3. The clamp-on ammeter with separate measurement function as claimed in claim 1 or 2, characterized in that: wherein the measuring handle (9) is provided with a connection port (10) matched with the measuring plug (6) , and the toggle switch (8) is installed on the measuring handle (9).