60Hz 1-Minute Power Frequency Withstand Voltage Calculation
Calculate required power frequency withstand voltage and related parameters based on equipment specifications
Calculation Results
Recommended Test Voltage
28.5 kV
RMS Voltage
20.15 kV
Peak Voltage
28.5 kV
Allowable Leakage Current
5.7 mA
Test Recommendations
- Perform 1-minute power frequency withstand voltage test at the calculated 28.5kV
- Closely monitor leakage current during testing; should not exceed 5.7mA
- No voltage adjustment needed at 25°C ambient temperature
- Ensure equipment insulation is dry and clean before testing
- Immediately stop testing and inspect equipment if breakdown or flashover occurs
Reference Standards
IEC Standards
- IEC 60060-1: High-voltage test techniques
- IEC 60076-3: Power transformers - Insulation levels
- IEC 60270: Partial discharge measurements
- IEC 60502: Power cables and their accessories
GB Standards
- GB/T 16927.1: High-voltage test techniques
- GB 1094.3: Power transformers - Insulation levels
- GB/T 7354: Partial discharge measurements
- GB/T 12706: Extruded insulation power cables (1kV-35kV)
About the Power Frequency Withstand Voltage Calculator
This power frequency withstand voltage calculator is designed to determine the required test voltage for electrical equipment at 60Hz for a 1-minute duration. Power frequency withstand voltage testing is a critical method for evaluating insulation performance, verifying insulation strength and overvoltage withstand capability of electrical equipment at rated voltage.
Calculation Principle
The power frequency withstand voltage is typically determined based on the equipment's rated voltage, insulation class, test type, and safety factor. The calculation formula is:
Applications
- • Factory acceptance testing of electrical equipment
- • Acceptance testing after equipment installation
- • Insulation performance testing after equipment overhaul
- • Insulation condition assessment during regular maintenance
- • Performance testing during new product development