Kohler PowerWAVE 8000DPA RI (S2) Series, Руководство пользователя, Страница: 17 / 88

TS_616_08 PW8000DPA ST (S2) User Manual 21/4/22
9
2: General Description
UPS ON-BATTERY mode
The UPS automatically changes to the
ON-BATTERY
mode if the mains input supply fails during normal operation:
• The rectifier is turned off.
• The automatic battery switch is closed.
• The battery discharges through the DC boost converter which remains fully operational and continues to provide
the inverter with its regulated DC input.
• The inverter continues its normal operation (the changeover to battery power is transparent to the inverter).
• The output relay remains closed.
• The battery charger is turned off.
• The static switch is off.
UPS ON-BYPASS mode
This mode can be selected by the operator as part of the system operating procedure. It is also entered following certain
fault occurrences such as a UPS output overload:
• The static switch is turned on to connect the load to the unregulated UPS bypass mains input.
Depending on whether or not the transfer to bypass was ‘selected’ or following a ‘fault’:
• The rectifier, boost converter and battery charger will remain active to maintain battery charging.
• The inverter may/may-not remain powered up and in operational readiness to be brought into use.
Note: When operating in this mode the load is not protected against any mains input supply disturbances or loss.
Figure 2.5 UPS ON-BATTERY
AC/DC (PFC)
CONVERTER
DC BOOST
CONVERTER
DC/AC
INVERTER
BATT. CHARGER
STATIC
SWITCH
UPS AC
Output
UPS
Bypass
Mains
UPS
Input
Mains
BATTERY
UPS MODULE
Input
Relay
Automatic
Batt. Switch
Output
Relay
Figure 2.6 UPS ON-BYPASS
AC/DC (PFC)
CONVERTER
DC BOOST
CONVERTER
DC/AC
INVERTER
BATT. CHARGER
STATIC
SWITCH
UPS AC
Output
UPS
Bypass
Mains
UPS
Input
Mains
BATTERY
UPS MODULE
Input
Contactor
Automatic
Batt. Switch
Output
Contactor