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TS_622_02 PowerWAVE 9500DPA User Manual 26/2/19
2.4
Parallel system operation
Figure 2.9 PowerWAVE 9500DPA – Parallel cabinet system
All the UPS modules fitted in a PW9500DPA cabinet inherently operate as a parallel system as their outputs are
connected in parallel at the cabinet’s output terminals. The electronic control system built into each module ensures that:
• The modules are always frequency-synchronised to each other – and to the bypass mains (when present).
• The modules equally share the load current.
• The modules’ load transfer operation is synchronised such they ALL transfer their output between inverter and
bypass simultaneously when commanded from any one module.
The PowerWAVE 9500DPA UPS system can be expanded by connecting the outputs of up to six PW9500DPA UPS
cabinets in parallel; and when two or more cabinets are connected in this way, all the UPS modules within them are
effectively paralleled together. A maximum system capacity is obtained by connecting together six fully populated
PW9500DPA cabinets, which results in a total of thirty (100kVA) modules operating in parallel with a system capacity of
3000kVA.
STATIC
SWITCH
INVERTER
RECTIFIER
Parallel Control Logic
UPS Module P06
CHARGER
STATIC
SWITCH
INVERTER
RECTIFIER
Parallel Control Logic
UPS Module P07
CHARGER
Parallel Control Logic
UPS Module P08
Parallel Control Logic
UPS Module P09
Parallel Control Logic
UPS Module P10
UPS CABINET 2
STATIC
SWITCH
INVERTER
RECTIFIER
Parallel Control Logic
UPS Module P01
CHARGER
STATIC
SWITCH
INVERTER
RECTIFIER
Parallel Control Logic
UPS Module P02
CHARGER
Parallel Control Logic
UPS Module P03
Parallel Control Logic
UPS Module P04
Parallel Control Logic
UPS Module P05
UPS CABINET 1
Parallel Adapter Board
To JD5 in UPS CABINET 3
JD5
JD6
Parallel Adapter Board
JD5
JD6
