NXZ Automatic Transfer Switch
Normal operation of
normal power supply
Failure of normal
power supply T1
Disconnection of
normal power supply
Disconnection of
normal power supply
Disconnection of
normal power supply
Power up of alternative
power supply
Connection of alternative
power supply
Connection of alternative
power supply
Connection of alternative
power supply
Recovery of normal
power supply T2
Normal operation of
normal power supply
Normal operation of
normal power supply
Start-up of generator
Generator output reaches
set value T1
Failure of alternative
power supply T2
Power supply of
alternative power source
Recovery of normal
power supply T2
Disconnection of
alternative power supply
Disconnection of
alternative power supply
Disconnection of
alternative power supply
Power up of normal
power supply
Power up of normal
power supply
Power up of normal
power supply
Power up of normal
power supply T4
Connection of normal
power supply
Connection of normal
power supply
Connection of normal
power supply
Generator shutdown
Flow Chart of Automatic Charge and Automatic
Recovery (Grid - Grid) of Controller
Flow Chart of Automatic Charge and No Automatic
Recovery (Grid - Grid) of Controller
Flow Chart of Automatic Charge and Automatic Recovery
(Grid - Power Generation) of Controller
Failure of normal
power supply T1
Failure of normal
power supply T3
Power up of alternative
power supply
Power up of alternative
power supply
Recovery of normal
power supply
Motion flow of controller
14
I: Normal power supply
II: Alternative power supply
T1: Switching delay time
Failure of normal power supply, time before
disconnection of I
T2: Return delay time
Recovery of normal power supply, time before
disconnection of II
T3: Generator start-up delay time: 0s~300s
adjustable
T4: Generator shutdown delay time: 0s~300s
adjustable
Figure 17 Motion flow of controller
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