Charge display device

Abstract

The invention provides an electriferous display device. The electriferous display device can display whether a high-pressure ring net cabinet is electriferous and provide a signal for a nuclear phase device matched with the electriferous display device, is favorable for prolonging the service life and improves the accuracy of nuclear phase. The electriferous display device is characterized in that the electriferous display device comprises two independent circuit loops, namely an electric display loop and a nuclear phase loop; and the electric display loop and the nuclear phase loop are connected with the input end of a three-phase electriferous signal through a shifting switch.

Description

technical field [0001] The present invention relates to electric display technology and nuclear phase technology for high-voltage ring network cabinet equipment, in particular to a charged display, which can display whether the high-voltage ring network cabinet is charged and provide a check phase for the nuclear phase device used in conjunction with it. sequential signal. Background technique [0002] In the existing imported switch cabinets, such as the load switch cabinet (referred to as SM cabinet) and the live display used in the fuse combination electrical cabinet (referred to as FS cabinet) of a foreign company (SEL), the following problems were found after testing: [0003] 1. The SM cabinet in the prior art uses the voltage induced by the metal sheet as the live signal, while the FS cabinet uses the sensor under the fuse to induce the voltage as the live signal. The parameters of the induction of the two cabinet types are very different, and the parameters of the S...

AI Technical Summary

Problems solved by technology

Due to the difference of 2 / 3 of the nuclear phase parameters between the same phases of the imported charged display, this is enough to provide an error signal to the phase nuclear device, resulting in an error indication of the phase nuclear device, which cannot help the user to correctly check the phase sequence

[0004] 2. The imported charged display uses neon bulbs as indicator elements, and the display lights are flashing indicators. Because the instantaneous ignition voltage of neon bulbs is different, the flashing frequency is not exactly the same, resulting in unstable parameters of the nuclear phase hole and errors.

[0005] 3. The circuit board of the imported electrified display, the nuclear phase circuit and the display circuit are mixed into one circuit. Since there is no switch designed to turn off the indicator light, it is impossible to turn off the indicator light when the live condition is not observed, and it will be indicated for a long time after operation.

Compared with the operating life of the switchgear (maintenance-free for 30 years), the life of the imported live display is far shorter than the operating life of the switchgear, so it will increase the cost of after-sales service

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