Digital Equipment HA3000, Руководство по установке

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INSTALLATION 4–19
Connect the incoming A cable to the left side terminal of the circuit breaker. Connect
the incoming B cable to the middle terminal of the circuit breaker. Connect the
incoming C cable to the right side terminal of the circuit breaker. Connect the ground
cable to the ground busbar. The cables connecting the input circuit breaker to the
isolation transformer are factory installed.
The four power cables connecting the UPS Auxiliary Cabinet to the UPS cabinet are
provided. These cables are connected to the isolation transformer terminals X1, X2,
X3, and X0 (Figure 4–8). The other end of the cables are marked A, B, C, and N. The
cables must be terminated in the UPS cabinet. A ground cable is supplied with the UPS
Auxiliary Cabinet. This ground cable must be connected between the ground busbar in
the UPS Auxiliary Cabinet and the ground busbar in the UPS cabinet.
Feed the four power cables through the side cable entry area and into the UPS cabinet.
Connect them in one of the three configurations described in the following sections.
H3 H2 H1 X3 X2 X1 X0
FACTORY CONNECTIONS
FROM CB1 TO THE
ISOLATION TRANSFORMER
TO UPS CABINET
(THREE-PHASE
AND NEUTRAL)
M K V - A 2 2 1 4 - 9 1
Figure 4–8 Connecting the Isolation Transformer
4.4.1.2 Connecting the Isolation Transformer for Both the UPS Main AC Input (MAINS1)
and Bypass AC Input (MAINS2)
Connect the four cables from the UPS Auxiliary Cabinet marked A, B, C, and N to the
UPS cabinet input busbars marked A, B, C, and N, respectively (refer to Figure 4–9).
The UPS main ac input (MAINS1) and bypass ac input (MAINS2) must be connected
together using jumper cables.
NOTES
Digital Equipment Corporation does not furnish these jumper cables for field
installation.
Systems with a 600 Vac input always require an HA32C/D UPS Auxiliary Cabinet
with the input isolation transformer supplying both the UPS main ac input
(MAINS1) and the bypass ac input (MAINS2). The UPS main ac input and
bypass ac input must be internally connected with jumper cables. The customer
must supply one ac feeder only.