Doosan DVF5000 - Machine Leveling

30
4. Machine Power-up
3
) Checking the factory voltage applied
Switch the switchboard of the factory to "ON" and measure the voltage of the factory
side power on the main NFB using an electric tester to see if there is any irregularity.
▪ Voltage range allowed : 220V±13V (60Hz area), 200V±13V (50Hz area)
※ Note) Check the phase-to-phase voltage of main power and volt
age w
ith the earth
(1) If the factory power is “Δ ” wiring
① R – S : 220V±13V
② S – T : 220V±13V
③ S – T : 220V±13V
④ E – R : 220V
⑤ E – S : 0V
⑥ E – T : 220V
(2) If the factory power is
“Y” wiring
① R – S : 220V±13V
② S – T : 220V±13V
③ S – T : 220V±13V
④ E – R : 128V
⑤ E – S : 128V
⑥ E – T : 128V
R
S
T
R
S
T
E
E
S
R
T
E
R
S
T
E
Checking phase-to-phase
voltage
Check voltage with Earth