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 (MMS System Cabinet)

Usage:

UPS 250 APZ
The system cabinet for the multiple module system (MMS) contains most the electronic control circuitry for the system. The MMS cabinet manages many UPS operations.


Illustration 1g01267882
Left view of the MMS system cabinet
(1) Fans
(2) Modem\Ethernet
(3) Left panel
(4) Zig - Zag circuit breaker (4-wire)
(5) Motorized circuit breaker (K3)
(6) Zig - Zag transformer (T5)


Illustration 2g01267885
Right view of the MMS system cabinet
(7) Static bypass option
(8) Right panel


Illustration 3g03428043
Front view of the MMS system cabinet
(9) MOV 2 surge protector
(10) MMU 1 input isolation switch
(11) MMU 1 output isolation switch
(12) MMU 2 input isolation switch
(13) MMU 2 output isolation switch
(14) MMU 3 input isolation switch
(15) MMU 3 output isolation switch
(16) MMU 4 input isolation switch
(17) MMU 4 output isolation switch
(18) MOV 1 surge protector
(19) Primary current transformers


Illustration 4g01267899
Left panel of the MMS system cabinet
(20) Fan monitor PWA
(21) Power distribution capacitors
(22) Modem power transformer T4
(23) Power distribution PWA
(24) Modem power supply
(25) Parallel cabinet controller PWA
(26) ESS fuses F4 - F6
(27) EPO reset switch
(28) 24 VDC power supplies
(29) Parallel cabinet interface PWA
(30) Transformer T2
(31) Transformer T1
(32) AC interface PWA
(33) Secondary current transformers
(34) System I/O PWA
(35) Transformer T3
(36) Fuses F7 - F12
(37) System I/O daughter PWA
(38) External source sync (ESS) relay


Illustration 5g01267903
Right panel of the MMS system cabinet
(40) Fuses (F1, F2, F3)
(41) Static switch assembly
(42) Ground reference assembly
(43) Neutral reference assembly

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