短路保护的目的是当电路发生短路故障时，能快速可靠地切断电路，保证电源负

The purpose of short-circuit protection is to cut off the circuit quickly and reliably when a short-circuit fault occurs in the circuit to ensure the power load and personal safety. At present, the short-circuit protection of the circuit almost all adopt the fuse as the main protection, the circuit breaker as the form of backup protection, and the fuse as the main protection of the short-circuit protection. Short-circuit fault is a kind of fault that often occurs during the operation of our electrical equipment. An electrical fault that often occurs in production and life. In order to minimize the occurrence of short-circuit faults, usually we are equipped with short-circuit protection equipment during the operation of electrical equipment. Short-circuit protection refers to the operation of the power system. The current that flows when an abnormal connection (ie, short circuit) occurs between the ground (or neutral wire). Its value can be much larger than the rated current and depends on the electrical distance between the short circuit point and the power supply. For example, when a short-circuit occurs at the generator end, the maximum instantaneous value of the short-circuit current flowing through the generator can reach 10 to 15 times the rated current. In large-capacity power systems, the short-circuit current can reach tens of thousands of amps. This will have serious impacts and consequences on the normal operation of the power system.

The purpose of short-circuit protection is to cut off the circuit quickly and reliably in the event of a short circuit failure, so as to ensure the power load and personal safety. At present, the short circuit protection almost all use fuse as the main protection, circuit breaker as the form of backup protection, the main protection short circuit fault using fuse as short circuit protection is a kind of fault that often occurs when our electrical equipment is running, is also an electrical fault that often occurs in our production life, in order to minimize the occurrence of short circuit fault, usually we in the operation of electrical equipment, equipped with short circuit protection equipment, short circuit protection refers to the power system in operation, Current flowing between phases or between phases (or neutral lines) when an abnormal connection (i.e. a short circuit) occurs. The value can be much greater than the rated current and depends on the electrical distance of the short circuit point from the power supply. For example, in the event of a short circuit at the generator end, the maximum instantaneous value of the short-circuit current flowing through the generator can be 10 to 15 times the rated current. In high-capacity power systems, short-circuit currents can reach tens of thousands of amps. This will have serious effects and consequences on the normal operation of the power system.

The purpose of short-circuit protection is to cut off the circuit quickly and reliably when the short-circuit fault occurs, so as to ensure the power load and personal safety. At present, the short-circuit protection of the circuit almost all uses the fuse as the main protection, the circuit breaker as the backup protection form, uses the fuse as the main protection of the short-circuit protection. The short-circuit fault is a kind of fault that often occurs in the operation of our electrical equipment, and it is also a kind of electrical fault that often occurs in our production and life. In order to minimize the occurrence of short-circuit fault, it is very common We are equipped with short-circuit protection equipment in the operation of electrical equipment. Short circuit protection refers to the current flowing when abnormal connection (short circuit) occurs between phases or between phases and ground (or neutral line) in the operation of power system. Its value can be much higher than the rated current and depends on the electrical distance between the short circuit point and the power supply. For example, when a short circuit occurs at the generator end, the maximum instantaneous value of the short circuit current flowing through the generator can reach 10-15 times of the rated current. In large capacity power system, the short circuit current can reach tens of thousands of amperes. This will have a serious impact and consequences on the normal operation of the power system.<br>