Sealing current device with automatic detector
A detector and current technology, which is applied in the direction of measuring devices, measuring electricity, switching devices, etc., can solve the problems affecting the reliability and safety of current sealing wires, human judgment errors, leaking current sealing wires, etc., to avoid three-phase Influence of the maximum unbalanced current, ensuring the scope of application, and ensuring the effect of safety
Inactive Publication Date: 2014-11-05
STATE GRID BAODING ELECTRIC POWER SUPPLY CO +2
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Problems solved by technology
The work is cumbersome and the efficiency is low; and after sealing the current loop, the phase meter is connected, which affects the reliability and safety of the original current sealing line
The most important thing is that because the digital display prompts are not intuitive, there are human judgment errors, which are prone to misoperation, mistaken disassembly, and the possibility of leaking the current sealing line after the work is completed. Once the above situation occurs, it will cause serious damage to our equipment. Impact
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[0014] Such as figure 1 with figure 2 As shown, this embodiment includes an insulating housing 1, a current transformer I2, a current transformer II3, a current transformer III4 and a current transformer IV5. Current transformers I2, II3, III4 and IV5 respectively include circular iron cores 21, 31, 41, 51, primary windings 22, 32, 42, 52, secondary windings 23, 33, 43, 53 and light-emitting diodes A24, light-emitting Diode B34, LED C44, LED N54. The primary windings 22, 32, 42, 52 and the secondary windings 23, 33, 43, 53 are respectively wound on the iron cores 21, 31, 41, 51, and the two ends of the secondary windings 23, 33, 43, 53 are respectively connected to light-emitting diodes A24, LED B34, LED C44, LED N54. The output ends of the primary windings 22, 32, 42, 52 are connected together, and the input ends lead out from the casing 1, which are lead-out line a, lead-out line b, lead-out line c and lead-out line n. LED A24 emits yellow light, LED B34 emits green lig...
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The invention discloses a sealing current device with an automatic detector. The sealing current device comprises: an insulation shell, a current transformer I, a current transformer II, a current transformer III and a current transformer IV. The current transformers I, II, III and IV comprise: a circular iron core, a primary winding, a secondary winding and a display lamp respectively. The primary winding and the secondary winding are twined on the iron core respectively. Two ends of the secondary winding are connected with the display lamp. Output terminals of the primary winding are connected together. Input terminals are led out of the shell and are an outgoing line a, an outgoing line b, an outgoing line c and an outgoing line n. The detector of the invention can prompt visually. Reliability is high and operation is simple. Possibilities for carrying out misoperation, dismounting mistakenly, forgetting dismounting a current sealing line after the end of the work can be avoided.
Description
technical field [0001] The invention relates to a sealing device for a power secondary system that needs to seal a current loop. Background technique [0002] In the verification of power relay protection equipment or the transformation of protection devices, the secondary current needs to be reliably sealed before the corresponding verification and transformation can be carried out. After the work is completed, the sealed current loop must be removed, if it is left at the work site , It may cause the protection device to refuse to operate, or to malfunction, resulting in a large-scale power outage. The traditional sealing line cannot automatically detect whether the current loop of each phase is reliably sealed when sealing the current loop. Therefore, another person needs to use the phase meter or check whether the sampling value of the protection device is reduced to determine whether the current loop of each phase is reliably sealed; when removing the current seal, repe...
Claims
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IPC IPC(8): H02B3/00G01R31/02
Inventor 王江涛陈磊付超曹磊张立辉王宏伟
Owner STATE GRID BAODING ELECTRIC POWER SUPPLY CO