Safety power utilization protector

Abstract

The invention discloses a protector for safety power consumption. The inventive art is characterized in comprising a power transformation adjusting voltage regulator circuit, a switch servo control execution circuit, a leak monitor control output circuit, a short circuit monitor control output circuit, an overload monitor control output circuit, an overpressure monitor control output circuit, an underpressure monitor control output circuit, a fault phase monitor control output circuit, a leak / short circuit diagnosis control output circuit, amplifying IC gate reference voltage circuit, a status display and alarm circuit. the power transformation adjusting voltage regulator circuit supplies power for all the control circuits; the amplifying IC gate reference voltage circuit supplies pure direct current flat voltage for the amplifying IC reference gate voltage; the switch servo control execution circuit drives the switching of the alternative power 2K-AC switch in the main circuit.

Description

【Technical field】 [0001] The invention relates to an electrical protector, in particular to a safe electrical protector used in the electric power field. 【Background technique】 [0002] In AC single-phase operation transmission lines, the end-use electricity network spreads across thousands of households. Due to the lack of relevant advanced, highly reliable and well-functioning protective devices in the transmission line of the end user, overload and short circuit of the transmission line may cause fire, leakage to casualties, and overvoltage, undervoltage, and inductive lightning damage electrical equipment. Electricity accidents occur frequently. These potential and unexpected hidden dangers have become a major hazard to human safety in electricity consumption. The protective devices currently put into use for protection, such as fuses, leakage switches, and circuit breakers, have played a certain role, but their functions are limited, their protection is not comprehens...

AI Technical Summary

Problems solved by technology

At present, the protective devices such as fuses, leakage switches, and circuit breakers used for protection have played a certain role, but their functions are limited, the protection is not comprehensive, and their reliability is not good. In the circuit, when the rated current flows, it will generate heat, and the abnormal change will cause the contact resistance of the terminal to increase during the repeated cooling and heating process. Afterwards, when the same rated current flows, high heat will be generated, causing non-fault and blown. People often use enlarged specifications to solve the problem. , due to inappropriate specifications, it also brings hidden dangers to safe use of electricity; the leakage switch has a single function. When the controlled line leaks, the zero-sequence current transformer generates an unbalanced current, and the detection of the leakage signal triggers the thyristor electromagnetic coil to generate magnetic force. When the mechanical device breaks the power supply, strong vibration will easily cause the fulcrum of the internal device to wear and tear, resulting in parameter drift or failure. Due to the simple detection and processing and poor anti-interference performance, errors will often occur. There is no fault status indication after the switch is opened. There are also potential hidden dangers in the safe use of electricity: the mechanical control structure of the circuit breaker is in the passive protection mode. When the controlled line is short-circuited, the internal metal device will generate thermal changes to eccentric shift and break the power supply. In the power transmission network, the current intensity of many terminal networks reaches If the required conditions are not met, the protective effect cannot be achieved when a fault occurs. Furthermore, when the short-circuit condition is reached and the tripping is made, there will be no status display after the switch is opened, and the fault occurred on the load line cannot be identified. If the switch is reclosed, it will cause Major electricity accidents are also potential hazards to safe electricity use

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