Mitsubishi Electric M9950 Series Technical Manual page 46

MITSUBISHI
ELECTRIC
4. Two (2) sources feeding the UPS:
(1) Connect the AC input power cables from the input service entrance to the AC
input power terminals, identified as A, B, C in FIGUREs 3.1 to 3.3. Input cables
must be sized for an ampere rating larger than the maximum input drawn by the
converter. (Refer to equipment nameplate for current ratings.) Confirm that an
external bypass input circuit breaker (MCCB) is installed (refer to WARNING 4,
page 1-4). 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
3.1 to 3.3. Bypass input cables must be sized for an ampere rating larger than the
maximum output current capacity of the UPS. Refer to TABLE 3.4 for
recommended cable sizes.
(2) Connect the external signal terminal block as desired. Refer to section 2.4 and
FIGURE 2.10 for functional description. 2mm
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
3.1 to 3.3. Input cables must be sized for an ampere rating larger than the
maximum current capacity of the UPS. Refer to TABLE 3.4 for recommended
cable sizes.
(2) Using adequately sized conductors and referring to the appropriate figure
identified in FIGUREs 3.1 to 3.4, connect jumper bypass terminals A40, B40, C40
to AC input power terminals A, B, C as identified in FIGUREs 3.1 to 3.4.
MITSUBISHI ELECTRIC M9950 SERIES UPS
M9950 SERIES UPS
OWNERS / TECHNICAL MANUAL
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3-4
2
, or less, shielded conductor is