-14-
3.4 PROTECTION FUNCTION
State of protection operation
(
√
:State change
、
、
、
、
There is no change at the blank.)
Reactivation
condition when
abnormal content
is excluded
Abnormality part
State
Vw,
Vx
Vs
Va
Vex
Vey Vcc
Vpr
Va
ux
AC
Re-turn
ing on
Overvoltage Stop(no
latch)
√
√
√
√
√
√
√
Vw
Overcurrent Delay
Latch
√
√
√
√
√
√
√
Yes
Overvoltage Stop(no
latch)
√
√
√
√
√
√
√
Yes
Vx
Overcurrent Delay
Latch
√
√
√
√
√
√
√
Yes
Overvoltage Latch
√
√
√
√
√
√
√
Yes
Low voltage
Latch
√
√
√
√
√
√
√
Yes
Vs
Overcurrent Delay
Latch
√
√
√
√
√
√
√
Yes
Overvoltage Latch
√
√
√
√
√
√
√
Yes
Low voltage
Latch
√
√
√
√
√
√
√
Yes
Va
Overcurrent Delay
Latch
√
√
√
√
√
√
√
Yes
Overvoltage Stop(no
latch)
√
√
√
√
√
√
√
Yes
Vex
Vey
Overcurrent
Voltage
pendency(no
latch)
√
√
√
√
√
√
√
Yes
Overvoltage Latch
√
√
√
√
√
√
√
Yes
Vcc
Overcurrent Delay
Latch
√
√
√
√
√
√
√
Yes
Vpr2 Overcurrent Delay
Latch
√
√
√
√
√
√
√
√
√
Yes
