CHINT NXZ Series User Instructions page 16

Motion flow of controller
Normal operation of
normal power supply
Failure of normal
power supply T1
Disconnection of
normal power supply
Power up of alternative
power supply
Connection of alternative
power supply
Recovery of normal
power supply T2
Disconnection of
alternative power supply
Power up of normal
power supply
Connection of normal
power supply
Flow Chart of Automatic Charge and Automatic
Recovery (Grid - Grid) of Controller
Normal operation of
normal power supply
Failure of normal
power supply T1
Disconnection of
normal power supply
Power up of alternative
power supply
Connection of alternative
power supply
Recovery of normal
power supply
Power supply of
alternative power source
Failure of alternative
power supply T2
Disconnection of
alternative power supply
Power up of normal
power supply
Connection of normal
power supply
Flow Chart of Automatic Charge and No Automatic
Recovery (Grid - Grid) of Controller
NXZ Automatic Transfer Switch
Flow Chart of Automatic Charge and Automatic Recovery
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
14
Normal operation of
normal power supply
Failure of normal
power supply T3
Start-up of generator
Generator output reaches
set value T1
Disconnection of
normal power supply
Power up of alternative
power supply
Connection of alternative
power supply
Recovery of normal
power supply T2
Disconnection of
alternative power supply
Power up of normal
power supply
Connection of normal
power supply
Power up of normal
power supply T4
Generator shutdown
(Grid - Power Generation) of Controller