Toshiba 4400 Series Installation And Operation Manual page 44

TABLE 8.3 50KVA UPS COMPONENT LOCATION
AND IDENTIFICATION (CONT.)
No. Description
13 PCB 4 – Charger Board
14 PCB 1 – Control Board
15 PCB 5 – Bypass Driver Board
16 AC Output Fuses
17 PCB 2 – Converter Board
18 PCB 3 – Inverter Board
19 AC Input Fuses
20 (This Number Not Used)
21 DC Capacitor Bank
22 DC Power supply for PCB-9A (Dis-
play Control Board)
23 Primary Input Contactor
24 AC Input EMI Filter
25 AC Output EMI Filter
26 TB1 with Primary Input, Output, and
Backup DC Supply Box Lugs
27 (Optional) TB4 with Secondary
Input Power Box Lugs
28 TB3 – Terminals for Battery Cabinet
Breaker Shunt Trip and Aux.
29 Ground Bus
30 Shunt Trip DC Power Supply
31 Bottom Cable Access Port
32 Side Cable Access Ports
33 Top Cable Access Port
34
33
13
19
17
22
24
23
30
28 29
32
31
4400 Series Installation and Operation Manual – 64527-006
14 15
16
18
21
25
25
26 27
32