CHINT NXZM User Instructions page 12

Controller operation process
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
、
NXZM NXZ(H)M 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~180s
adjustable
T4: Generator shutdown delay time: 0s~180s
adjustable
Fig 13 Controller operation process
10
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