UPS 120, UPS 150, UPS 250, UPS 300, UPS 301, UPS 500, UPS 600, UPS 750 and UPS 900 Uninterruptible Power Supplies Caterpillar


General Information (Flywheel Cabinet)

Usage:

UPS 250 APZ
The flywheel cabinet for the single module system (SMS) and the flywheel cabinet for the multiple module system (MMS) contain the following components:

  • The flywheels

  • All electronic components that are associated with running the flywheels


Illustration 1g01267912
Flywheel cabinet shields view
(1) Fan shield
(2) APC hinged panel
(3) Field coil driver
(4) APC PWA
(5) DC bus
(6) Middle shield
(7) Hinged panel
(8) EPO/EMO reset switch
(9) Lower shield
(10) Vacuum oil valve
(11) System I/O PWA shield
(12) Flywheel


Illustration 2g01267930
Left view of the flywheel cabinet
(13) Fans
(14) Static switch assembly
(15) Utility inverter modules
(16) Flywheel inverter modules
(17) AC input fuse (F1 - F3)
(18) DC capacitor bank
(19) Filter inductor
(20) Left panel
(21) Inductor fuses (F4 - F6)
(22) Vacuum pump


Illustration 3g01267966
Left panel view of the flywheel cabinet
(23) Fan monitor PWA (FAN)
(24) Transformer T2
(25) Power distribution PWA (PWD)
(26) Fuses (F25 - F28)
(27) Transformer T1
(28) Input contactor (K1)
(29) Output contactor (K2)
(30) AC Interface PWA (ACI)
(31) System Input/Output PWA (SIO)
(32) Terminal Strips
(33) System I/O daughter PWA (SIOD)


Illustration 4g01267984
Flywheel cabinet upper plenum modules
(34) 24 VDC power supply

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