JP3005578U - High and low voltage clamp type ammeter - Google Patents

Abstract

(57) [Abstract] [Objective] The present invention aims to eliminate the drawbacks of the conventional ammeter and to obtain a clamp type ammeter for both high and low voltage which enables safe and accurate measurement. [Constitution] A CT core storage case (6) is provided at the front end of the main body case (1) and a grip portion (7) is attached at the rear end of the main body case (1). (9) is provided, and the opening / closing lever (10) of the CT core storage case is pivotally attached, and the grip portion (7), the current value holding switch (9), and the opening / closing lever (10) of the CT core storage case. High and low pressure, characterized in that an elastic insulating coating (11) is coated on the current value / current value holding switch (9) and the opening / closing lever (10) of the CT core storage case so that it can be operated by one hand. Dual-purpose clamp type ammeter.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clamp type ammeter for both high and low voltage, which is configured so that shunt measurement of bypass work and measurement of distribution line can be performed safely and accurately.

[0002]

[Prior art]

 Since the conventional drawstring type high voltage ammeter has to be operated with both hands, there is an inconvenience that it is difficult to operate when holding one hand or holding a repair tool etc. in one hand. . In addition, the commonly known clamp-type ammeter does not hinder the measurement of low-voltage current, but in the case of high-voltage current, it was unavoidable to receive a shock even when wearing rubber gloves.

[0003]

[Problems to be solved by the device]

 It is an object of the present invention to eliminate the drawbacks of the conventional ammeter described above and to obtain a clamp type ammeter for both high voltage and low voltage which enables safe and accurate measurement.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a main body case provided with a CT core storage case at the front end and a grip at the rear end. In addition, a current value hold switch was provided, and the grip part, the opening / closing lever of the CT core storage case, and the current value hold switch were covered with an elastic insulating film.

[0005]

[Action]

 To measure the current at high places such as on a utility pole using this device, set the power switch to ON, grasp the grip with one hand from above the elastic insulating film, and open / close the lever for opening / closing the CT core storage case. Press from above the elastic insulating film and pull, open the CT core storage case and sandwich the target electrical circuit. The current value converted by the CT core is displayed on the current value display section, so by operating the current value hold switch, the numerical value displayed on the current value display section can be held and visualized. .

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 is a main body case in which a main body circuit 2 is inserted. , The main circuit 2 is connected. The current converted by the CT core is displayed on the current value display unit 3, and the current value changeover switch 4 changes the current value full scale.

A split type CT core storage case 6 made of synthetic resin or the like is provided at the tip of the main body case 1, and the CT core is stored in the CT core storage case 6. The CT core performs current conversion.

An insulative grip 7 is attached to the rear end of the main body case 1, a current value switch 9 is provided on this grip 7 so that it can be operated with one hand, and an opening / closing lever 10 for the CT core storage case 6 is provided. It is pivotally attached and a dry battery storage chamber 8 is provided. The current value holding switch 9 holds the current value as needed, and the CT core storage case opening / closing lever 10 opens / closes the CT core storage case 6 and sandwiches the electric path at the end of the CT core to open it again. It opens and closes when released.

The grip portion 7, the current value holding switch 9 provided on the grip portion 7, the opening / closing lever 10 of the CT core housing case, and the elastic insulating coating 11 formed of silicon rubber or the like, the current value holding switch. 9 and the opening / closing lever 10 of the CT core storage case are covered so that one-handed operation is possible.

[0010]

[Effect of device]

 This invention is configured as described above, and the opening / closing lever 10 for the CT core storage case is pivotally attached to the grip portion 7, and the elastic insulating coating 5 is provided on the opening / closing lever 10 for the grip portion 7 and the CT core storage case. The CT core storage case 6 can be opened and closed with one hand by gripping the grip portion 7 with one hand and operating the CT core storage case opening / closing lever 10 with one hand from above the insulating coating 11. You can Therefore, even if a high-voltage current is flowing, the insulating coating 11 protects the worker from the danger of electric shock, and the shunt measurement of bypass construction and the measurement of distribution lines can be performed safely and accurately.

The grip 7 is provided with a current value holding switch 9 so that it can be operated with one hand, and the grip 7 and the current value holding switch 9 are covered with an elastic insulating coating 11 so that they can be operated with one hand. In the case of a high voltage ammeter with a current value holding switch in the case, it is dangerous to touch the current value holding switch, but in the case of this invention, the insulating coating 11 prevents the danger. In addition to being able to operate with peace of mind, the current value display unit 3 can be made large, and the current value hold switch 9 can be operated with one hand, and the numerical value displayed on the current value display unit 3 can be changed. It is easy to hold and the numerical value can be viewed accurately.

Since the conventional drawstring type high voltage ammeter must be operated by using both hands, it cannot be operated when grasping with one hand or when carrying a repair tool or the like in one hand. Although there is a drawback, this device can grasp the grip part 7 with one hand and operate the switch 9 for holding the current value and the lever 10 for opening and closing the CT core storage case with one hand, which improves the measurement efficiency and saves the operator from a disaster. It has the effect of being protected from

[Brief description of drawings]

FIG. 1 is a side view.

FIG. 2 is a plan view.

[Explanation of symbols]

 1 Body Case 2 Body Circuit 3 Current Value Display 4 Current Value Switch 5 Power Switch 6 CT Core Storage Case 7 Grip 8 Dry Battery Storage 9 Current Value Hold Switch 10 CT Core Open / Close Lever 11 Insulating Cover

Claims (1)

[Scope of utility model registration request] 1. A main body case (1) provided with a CT core storage case (6) at the front end thereof and a grip portion (7) attached at the rear end thereof, wherein the gripping portion (7) can be operated by one hand to hold a current value. Switch (9) is provided, and a lever (10) for opening and closing the CT core storage case is pivotally mounted. This grip (7), current value holding switch (9), and lever for opening and closing the CT core storage case ( 10) and an elastic insulating film (11), a current value holding switch (9) and CT
A clamp type ammeter for both high voltage and low voltage, characterized in that the opening / closing lever (10) of the core storage case is covered so that it can be operated by one hand.