General Information (Input/Output Cabinet)
The Input/Output (I/O) cabinet is the utility power input cabinet for the UPS.
The I/O cabinet provides the primary connection points for 3-wire AC connections to the UPS. Facility 3-phase wiring is connected to the bus in the cabinet. Regulated or unregulated, 3-wire power or 4-wire power can exit the I/O cabinet.
When the system is in maintenance bypass, the 3-wire power is also output via the I/O cabinet.
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| Illustration 1 | g03797279 |
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(1) Cable to bus bar connection locations for input and output
(2) GSM CB1 switch/breaker | |
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| Illustration 2 | g03797282 |
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Cable connections | |
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| Illustration 3 | g01258608 |
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I/O cabinet with single input and no switches (8) System (output bus) (9) System (input bus) (10) MMU (input bus) (11) Output bus | |
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| Illustration 4 | g01258702 |
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I/O cabinet with dual input and no switches (15) Bypass input bus | |
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| Illustration 5 | g03797453 |
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I/O cabinet right panel example (component location is not the same on all units) (17) External source SYNC relay option (18) Transformer T1 (19) Fuses F13-F17 | |
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