Besantek BST-MT707, Инструкция по эксплуатации

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(8) Phase Rotation test (PR)
Insert the BLACK test lead to L1(COM) terminal
and the RED test lead to L2, L3(V Ω Hz )
terminal for phase rotation test.
Switch to V function, then press the SEL button
for ACV test. Then press the / Hz
button for more than one second to enter into the
"Phase Rotation" test mode, the "PR" sign starts
blinking on the LCD.
Connect the BLACK test lead(COM) to the first
voltage source and the RED test lead to the
second voltage source. The "PR" sign will stop
blinking and it means the first phase is locked.
Then connect the RED test lead to the third
voltage source within 5 seconds. The phase
rotation sequence will be determined, and the
" " or " " signs will be showed on the LCD
to indicate the phase rotation sequence.
Input voltage of phase rotation: 80~750VAC.
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