What Are The Consequences Of Selecting A Fuse With Too Small A Rated Current?
What will be the impact of selecting too small a rated current for ht drop out fuse?
Frequent fusing affects normal operation
Daily use is disturbed: When the circuit is operating normally, expulsion drop out fuse will frequently fuse because the normal operating current of the load may be close to or even exceed the selected fuse drop out rated current. For example, in a lighting circuit, the normal operating current is 3A. If drop out type fuse with a rated current of 2A is selected, shortly after the lamp is turned on, dropout fuse of transformer may fuse because the current exceeds its rated value, resulting in lighting interruption and affecting the normal production and living order.
Reduced work efficiency: Frequent drop out fuse unit fuses take time to replace the fuse. For some industrial enterprises with continuous production, this will cause interruptions in the production process, reduce production efficiency, and increase production costs. For example, in an automated production line, frequent fusing of drop out fuse set will cause the equipment to shut down, and restarting the equipment and adjusting production parameters will take a lot of time and effort.
Affecting the service life of equipment
Damage caused by frequent startup of equipment: When drop out fuse price is blown, it is necessary to eliminate the fault and replace the fuse to restore power supply. In this process, the electrical equipment needs to be restarted, and frequent startup will cause certain damage to the equipment. Taking the motor as an example, the current at startup is usually several times the normal operating current. Frequent startup will cause the motor winding to be subjected to a large current shock, accelerate the aging of the winding insulation, and shorten the service life of the motor.
Causing failure of other components: Frequent fusing of drop out fuse in transformer may cause voltage fluctuations in the circuit, affecting the normal operation of other electrical components. Some electronic equipment with high requirements for voltage stability, such as computers and precision instruments, may experience data loss, program errors, and even hardware damage when the voltage fluctuates greatly.
May not accurately protect the circuit
Misjudgment of fault type: Too small rated current may cause drop out fuse element to fuse in some non-fault situations, which can easily make people misjudge that there is a fault in the circuit, thereby spending time and energy to find the cause of the fault that does not exist at all, resulting in unnecessary waste of resources.
Covering up the real fault: When a slight overload or other abnormal situation occurs in the circuit, drop out fuse cut out may blow prematurely, covering up the real hidden fault. This will prevent the fault from being promptly and effectively checked and handled. Over time, the fault may gradually expand, eventually leading to more serious equipment damage and safety accidents.
