Special capacitive current testing operating rod
A technology for testing operation and capacitive current, which is applied in the direction of capacitance measurement, current only measurement, current/voltage measurement, etc. It can solve problems such as damage to test instruments, current-limiting fuses are easy to fall off and break, lead short circuit, etc., to achieve good contact, Save time for installing and disassembling fuses and avoid potential safety hazards
Inactive Publication Date: 2020-01-31
国网山西省电力公司阳泉供电公司
View PDF13 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Aiming at the problems that the current-limiting fuse is easy to fall off and break when there is no special operating rod when measuring the capacitive current, the lead wire swings to cause a short circuit and damage the test instrument, the present invention provides a special capacitive current testing operating rod, and the operating rod is replaceable Surface cleaning head, a part of the high voltage test lead is built in, and the current limiting fuse is built in
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] Such as figure 2 As shown, the operating rod shaft is composed of the upper section shaft, the lower section shaft and the middle metal joint. 11 compositions. The lower section rod body is composed of the lower section with external thread metal head 13, the lower section insulating part 14, and the lower section with internal thread metal head 15, wherein the lower section with internal thread metal head 15 has an internal thread upper internal welding screw, which can be passed through The nut is crimped with the built-in high-voltage test lead 34, the outer side is welded to the screw, and the high-voltage test lead 5 is crimped through the butterfly clamp 35. The middle metal joint 12 is provided with an upper external thread and a lower internal thread, and a circular baffle 33 with a hole in the middle is welded inside the middle. A compression spring 32 is installed on the upper part of the circular baffle 33. The upper part of the compression spring 32 is pre...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention, which belongs to the field of high-voltage live testing, especially relates to an operating rod for measuring capacitive currents, particularly to a special capacitive current testing operating rod comprising an operating rod body, an operating rod head and an insulating rod. According to the operating rod, a current-limiting fuse is arranged in a built-in mode. With a spring pressing mode, a fuse can be prevented from falling off due to the built-in mode of the fuse; the fuse is compressed by using a spring and does not need dismounting after installation, so that the fuse is used conveniently for next time and time of mounting or dismounting the fuse each time is saved. A high-voltage test lead is internally arranged; to be specific, one part of high-voltage test lead is arranged in a built-in manner and the rest of high-voltage test lead is arranged externally; and the external high-voltage test lead is connected to an externally welded screw at a lower node section inner thread metal head. When the capacitive current is tested at the neutral point of the transformer, the high-voltage test lead is located below an upper oil tank cover basically; and when the capacitive current is tested at a neutral point of a combined capacitor bank, the high-voltage test lead can be basically positioned outside a capacitor bank fence, so that potential safety hazards causedby swinging of the test lead can be completely avoided.
Description
technical field [0001] The invention belongs to the field of high-voltage live testing, and in particular relates to an operating rod used for measuring capacitive current, in particular to a special operating rod for capacitive current testing. Background technique [0002] System capacitance current: refers to the reactive current flowing through the grounding point when a single-phase grounding occurs in the operating neutral point ungrounded system without compensation. Due to the existence of capacitive current, a grounding arc may be formed at the moment of single-phase grounding, but the grounding arc is not easy to extinguish, and will be elongated under the action of wind, electric force, heat, etc., resulting in a short circuit between phases and a line trip accident; Intermittent arc overvoltage may occur, saturating the iron core of the electromagnetic voltage transformer and causing resonance overvoltage, etc. Cause fuse blown, arrester, voltage transformer dam...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26G01R19/00G01R1/02
CPCG01R1/02G01R19/0092G01R27/2605
Inventor 张海青王立李红红
Owner 国网山西省电力公司阳泉供电公司