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(2) Connect the external signal terminal block as desired. Refer to section 2.4 and Figure 2.10
for functional description. 14 AWG, or less, shielded conductor is recommended.
5.
One (1) source feeding the UPS:
(1) Confirm that an external input circuit breaker sized to protect both the AC input and the
bypass line is installed. (Refer to equipment nameplate for current ratings.) Connect the
bypass input power cables from the input service entrance to the bypass input power
terminals, identified as A40, B40 and C40 in Figures 3.6 to 3.7. Input cables shall be sized
for an ampere rating larger than the maximum current capacity of the UPS. Refer to Table
3.3 for recommended cable sizes.
(2) Using adequately sized conductors and referring to the appropriate figure identified in
Figures 3.6 to 3.7, connect jumper bypass terminals A40, B40, C40 to AC input power
terminals A, B, C as identified in Figures 3.6 to 3.7.
(3) Connect the external signal terminal block as desired. Refer to section 2.4 and Figure 2.10
for functional description. 14 AWG, or less, shielded conductor is recommended.
It is recommended that compression lugs be used to fasten all input/output
power cables.
CAUTION
6.
Procedure for Cable Connections for Parallel Operation System
(1) Confirm the number of units to be connected in parallel. Identify the input/output power
terminal blocks and control wire connections for parallel operation systems as shown in
the appropriate Figures 3.9 and 3.10.
(2) Connect the external control wire and power wire.
a.) Control wire connections
Parallel configuration wiring (Refer to figure 3.10.)
- 52L control signal from Critical Load Cabinet (CLC) to UPS-n IOAU-19
- Parallel control signal for TLAIN, TLAOUT, TLBIN, TLBOUT, CA1IN, CA1OUT,
b.) Power wire connections
From UPS AC Output Terminals to Critical Load Cabinet (CLC) (Refer to Figure 3.9
and 3.10.)
9900D SERIES UPS
OWNERS / TECHNICAL MANUAL
(TN11-14–23, 24).
DIAIN, DIAOUT, DIBIN, DIBOUT as shown in Fig. 3.10.
MITSUBISHI ELECTRIC 9900D SERIES UPS
Page Number:
3-7
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