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What are the recommended test voltage levels and testing times?

What are the recommended test voltage levels and testing times?

2020-11-11

The IEEE Std 400.2-2013: IEEE Guide for Field Testing of Shielded Power Cable Systems Using Very Low Frequency (VLF) (less than 1 Hz) was in...

CT analyzer verify the status and accuracy

CT analyzer verify the status and accuracy

2017-12-07

The CT analyzer is an indispensable instrument for on-site verification of current transformer accuracy. The traditional current transformer...

Why is withstand testing with DC voltage not recommended?

Why is withstand testing with DC voltage not recommended?

2020-11-11

Testing of cables was traditionally conducted with DC voltages in the past, which was also known as DC hipoting. Once polymeric cables (XLPE...

What is a Very Low Frequency Withstand Test?

What is a Very Low Frequency Withstand Test?

2020-11-12

A Very Low Frequency (VLF) Withstand Test is an AC Withstand Test usually carried out at a frequency between 0.1 Hz and 0.01 Hz. This kind o...

What size VLF test set is required?

What size VLF test set is required?

2020-11-12

Acceptance test voltages are generally 2.5 – 3 times the line to ground system voltage. A list of field test voltages from 5 kV to 69 kV can...

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