Toshiba T90S3S08KS6XSN, Руководство пользователя

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Doc: G8000 G8000MM G9000 Hybrid Static Transfer Switch 03 02 2009 Page 2 of 3
Transferring from UPS to Bypass:
1. Under normal operation, power flows from the Inverter, through the contactor 83MC1, to the output
(Route 1). The control relays R1 and R2, and contactor coil 83MC2 is not energized.
2. Control switch “Bypass” is closed, energizing relay R2. R2 operates the Gate Switch, closing the SCR.
Power instantly flows, through the SCR, from the Bypass supply to the output (Route 2). The Inverter
supply is automatically synchronized to the Bypass supply.
3. R2 also energizes coil (83MC2), causing the contactor to change state, switching the output power flow
from the Inverter to the Bypass supply. (Route 3).
4. Switch contact “Bypass” is opened and R2 is de-energized. This turns off the Switch Gate and opens
the SCR. Coil 83MC1 of inverter output contactor is also de-energized.
R2
R1
R2 R2
83MC1 83MC2
Inverter}
Bypass}
Static Transfer Switch
SCR Switch
SCR
Switch
UPS
Bypass
Route 1
Route 2
Route 3
R1
R1
Control Circuit
83MC2
83MC1