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**Electrical Degree to Millisecond Conversion Formula Reviewer and Interactive Calculator**

cycle

= millisecond

Calculator 1

° degree

= milliseconds

Calculator 2

° degree

= cycle

Calculator 3

cycle

= millisecond

Calculator 4

° degree

= millisecond

Calculator 5

° degree

= cycle

Calculator 6

Assume voltage or current waveform frequency = 100,000 cycles/sec or 100 kHz

This visualization is useful in analyzing transient recovery overvoltage (TRV) due to restrike voltage in SF6 Gas in Extra High Voltage Power Circuit Breakers.

The normal operating frequency of EHV Power Circuit Breaker in the U.S. is 60 Hz. If the breaker is calibrated to trip at 2 cycles out of 60 Hz , it means the operating speed of the breakers is 33.33 millisecond not including the time delay for relay operation. TRV is very fast in 20 nanosecond up to 10 microsecond.

ASSUME FREQUENCY AT 100 kHz

cycle

= microsecond

10 microsecond = 10µsec

= 10 x 10^{-6} second

=10 e^{-6} second = 0.000010 sec

Calculator 7

ASSUME FREQUENCY AT 50 MHz

cycle

= nanosecond

20 nanosecond = 20 nsec

= 20 x 10^{-9} second

=20 e^{-9} second = 0.000000020 sec

Calculator 8

1 cycle * sec /60 cycles = 0.0166667 seconds = 16.667 milliseconds

360 electrical degree = 1 cycle

1 ° degree = 1/360 cycle = 0.002778 cycle

1 cycle * sec /50 cycles = 0.02 seconds = 20 milliseconds

radian

= degree

Calculator 9