Three-phase multifunctional protector

Abstract

The invention discloses a three-phase multifunctional protector, and belongs to the technical field of electronics. The three-phase multifunctional protector comprises a shell, a control assembly, anuncovering assembly and a locking assembly. The three-phase multifunctional protector is matched with a plastic air circuit breaker with high section capacity to achieve the advantages of low price, small size, light weight and excellent performance, thereby being a reasonable choice for ship design, manufacturing and use departments. In addition, the three-phase multifunctional protector is further provided with the uncovering assembly in the shell, and the uncovering assembly is used for driving the control assembly to be opened and closed, thereby facilitating the maintenance of a protection circuit inside the shell and the replacement of electronic components, and thus avoiding the situation that the traditional protector is large in size, heavy in weight and inconvenient to install ina place with dense equipment. In addition, the locking assembly is installed on the front side of the shell, wires connected with equipment such as a current transformer and a voltage transformer canbe locked through the locking assembly, the breakage of the wires caused by vibration stress generated by ship navigation is avoided, and the normal operation of the three-phase multifunctional protector is guaranteed.

Description

technical field [0001] The invention relates to the field of electronic technology, and more specifically, relates to a three-phase multifunctional protector. Background technique [0002] At present, the main switchboards of small and medium-sized ships mostly use frame-type air circuit breakers as the protection switch of the generator. When the power grid transmission or load distribution is unbalanced, the power transmission to the input terminal of the electrical equipment is prone to phase loss and overvoltage. or undervoltage and other abnormal power supply conditions, in order to ensure the normal operation of three-phase loads, current relays, voltage relays, time relays, thermal protection relays, phase loss protectors and leakage protectors are usually used to protect the three-phase loads from undervoltage and failure Overvoltage, overvoltage and phase loss protection, because the above method adopts many low-voltage electrical components, the wiring is complicat...

AI Technical Summary

Problems solved by technology

[0002] At present, the main switchboards of small and medium-sized ships mostly use frame-type air circuit breakers as the protection switch of the generator. When the power grid transmission or load distribution is unbalanced, the power transmission to the input terminal of the electrical equipment is prone to phase loss and overvoltage. or undervoltage and other abnormal power supply conditions, in order to ensure the normal operation of three-phase loads, current relays, voltage relays, time relays, thermal protection relays, phase loss protectors and leakage protectors are usually used to protect the three-phase loads from undervoltage and failure Overvoltage, overvoltage and phase loss protection, because the above method uses many low-voltage electrical components, the wiring is complicated, takes up a lot of panel installation space, and the function is still not perfect, and the versatility is not strong, which limits its popularization and use.

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