PM
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3133i User
’s Manual v1.02
Last Revised: Apr. 2023 Page: 72
Copyright © ICP DAS Co., Ltd. All Rights Reserved.
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Q11. What is the difference between line to line voltages to line to ground voltage?
On a three phase wye connected system line to line voltages will be the voltages between
the terminals A - B, B - C, A - C. On a three phase wye connected system line to ground
voltages will be the voltages between the terminals A - N, B - N, C - N. To calculate the line
to ground voltages divide the line voltage by the square root of three which equals 1.73. An
example, on a 380 volt wye system, line to line voltage is 380 volts and line to ground
voltage is 380/1.73 = 220 volts