Digital Equipment HA3000, Руководство по установке

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4–16 INSTALLATION
FRONT
BACK
TOP
RIGHT SIDE VIEW OF
UPS AUXILIARY CABINET
TERMINAL BLOCK
TB1 (LEFT SIDE)
TB2 (RIGHT SIDE)
GROUND
BUSBAR
INPUT CIRCUIT
BREAKER CB1
ON HA32C/D
CABLE TRAYS
ISOLATION
TRANSFORMER
CAPACITOR
ASSEMBLY
MKV-A2213-91
(RIGHT SIDE)
Figure 4–7 UPS Auxiliary Cabinet Cable Trays
4.4.1 Power Cable Connections
The UPS Auxiliary Cabinet can accommodate two separate options: the isolation
transformer and the input harmonic current filter. Each of these options has its own
connection procedure.
4.4.1.1 AC Input Connection for Input Isolation Transformer Option
The connections to be made are the three-phase, three wires plus equipment ground. The
phase rotation must be A, B, C. Refer to Table 4–4 for the nominal ac input current at
the nominal input voltage specified, and for the input circuit breaker rating (if the UPS
Auxiliary Cabinet has the input isolation transformer). Size the main input cables and
upstream protection devices accordingly.