SLUAAR5 august   2023 ISO5451 , ISO5452 , ISO5851 , ISO5852S , ISO7741 , ISO7810 , ISO7820 , ISO7821 , ISO7830 , ISO7831 , ISO7840 , ISO7841 , ISO7842 , UCC23513 , UCC5310 , UCC5320 , UCC5350 , UCC5390

 

  1.   1
  2.   Abstract
  3. 1Introduction of Key Terms in IEC60664
    1. 1.1 Clearance and Creepage
    2. 1.2 Insulation Type
    3. 1.3 Decisive Voltage Class and Extra-Low Voltage
    4. 1.4 Protection Class
    5. 1.5 Pollution Degree
    6. 1.6 Overvoltage Category
    7. 1.7 System Voltage
    8. 1.8 Working Voltage and Voltage Block
  4. 2Insulation Distance Definition
    1. 2.1 Clearance and Creepage Determining Process
    2. 2.2 Clearance and Creepage Determining Method Example
  5. 3Summary
  6. 4Reference

1.8 Working Voltage and Voltage Block

Working voltage is the voltage that at rated supply conditions and worst-case operating conditions which occurs by design in a circuit or across insulation. The working voltage can be either DC or AC voltage. Both the RMS and recurring peak values of voltage are used. The value can be done either by simulation, calculation or measurement. Figure 1-6 shows three types of working voltage described in IEC61800-5-1.


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Figure 1-6 Circuit Evaluation for Working Voltage