Mitsubishi Electric 9900CX SERIES Owner Technical Manual page 41

3. Connect the grounding conductor from the input service entrance to the UPS Grounding
Bar (E).
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 Figure 3.1. 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 3.2. 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
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 3.2. 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 3.2, connect jumper bypass terminals A40, B40, C40 to AC input power
terminals A, B, C as identified in Figures 3.1 to 3.2.
(3) Connect the external signal terminal block as desired. Refer to section 2.4 and Figure
2.10 for functional description. 2mm
CAUTION : UPS power terminals are supplied with stud type fittings.
MITSUBISHI ELECTRIC 9900CX SERIES UPS
9900CX SERIES UPS
OWNERS / TECHNICAL MANUAL
2
, or less, shielded conductor is recommended.
2
, or less, shielded conductor is recommended.
It is recommended that compression lugs be used to fasten all
input/output power cables.
Page Number:
3-3