1. Determine the following parameters of the circuit
a, the maximum working environment temperature
b. Standard working current
c. Maximum working voltage (Umax)
d. Maximum fault current (Imax)
2. Choose a self-recovery fuse element that can adapt to the circuit's maximum ambient temperature and standard operating current
Use the temperature reduction {Ambient Temperature (°C) Operating Current (A)} table and select the temperature that best matches the maximum ambient temperature of the circuit. Browse this column to see the value equal to or greater than the standard operating current of the circuit.
3. Compare the maximum electrical rating of the selected component with the maximum operating voltage and fault current of the circuit
Use the electrical characteristics table to verify that the components you selected in step 2 will use the maximum operating voltage and fault current of the circuit. Check the maximum operating voltage and maximum fault current of the device. Ensure that Umax and Imax are greater than or equal to the maximum operating voltage and maximum fault current of the circuit.
4. Determine the action time
The operating time is the amount of time it takes to switch this component to a high resistance state when a fault current is present on the entire device. In order to provide the expected protection function, it is important to clarify the working time of the self-recovery fuse element. If the component you select moves too fast, abnormal or harmful actions will occur. If the element moves too slowly, the protected component may be damaged before the element switches to a high resistance state.
Use a typical operating time curve at 25°C to determine whether the operating time of the resettable fuse element is too fast or too slow for the circuit. If yes, go back to step 2 and reselect spare components.
5. Verify the ambient working temperature
Ensure that the minimum and maximum ambient temperature of the application is within the operating temperature range of the resettable fuse element. The operating temperature range of most resettable fuse components is between -40°C and 85°C.
6. Verify the overall dimensions of the self-recoverable fuse element
Use the size chart to compare the size of the resettable fuse you choose with the space conditions of the application.
FC/PC Fiber Optic Fast Connector
Fc/Pc Fiber Optic Fast Connector,Optical Fiber Fast Connector,Fast Sc Connector,Fast Connector Ftth
Ningbo Fengwei Communication Technology Co., Ltd , https://www.fengweifiberoptic.com