Mitsubishi technical manual Mitsubishi 9800A Series UPS

MITSUBISHI	9800A SERIES UPS	Page Number:
ELECTRIC	OWNERS / TECHNICAL MANUAL	3-3

b.) DC Input to UPS

1.Positive cable to BP bus bar in UPS rectifier section.

2.Negative cable to BN bus bar in UPS rectifier section.

3.Connect the grounding conductor from the input service entrance to the UPS ground bar.

4.Two (2) sources feeding the UPS:

(1)Connect the rectifier input power cables from the input service entrance to the rectifier input power terminals, identified as A, B, C in Figures 3.2-a~g. Input cables must be sized for an ampere rating larger than the maximum input drawn by the rectifier. (Refer to equipment nameplate for current ratings.) Confirm that an external bypass input circuit breaker (MCCB) is installed (refer to WARNING 2, page 1-2). Connect the bypass input power cables from the input service entrance to the bypass input power terminals, identified as A40, B40, C40 and N40 in Figures 3.2-a~g. 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 2.15 for functional description. 2mm2, 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 rectifier 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, C40 and N40 in Figures 3.2-a~g 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 3.2-a~g, connect jumper bypass terminals A40, B40, C40 to rectifier input power terminals A, B, C as identified in Figures 3.2-a~g.

MITSUBISHI ELECTRIC 9800A SERIES UPS