Procedure For Cable Connections; Table 3.3 Maximum Permitted Fault Current - Mitsubishi Electric 9900CX SERIES Owner Technical Manual

D) External Battery Supply
Please refer to the following when installing and maintaining batteries:
1. The customer shall refer to the battery manufacturer's installation manual for
battery installation and maintenance instructions.
2. The maximum permitted fault current from the remote battery supply, and the DC
voltage rating of the battery supply over-current protective device are shown in
Table 3.3.

Table 3.3 Maximum Permitted Fault Current

UPS Capacity
(kVA)
1050
1400
1750
2100

3.3 PROCEDURE FOR CABLE CONNECTIONS

1. Identify the input/output power terminal blocks as shown in Figure 3.1.
2. Connect the internal control wire and power wire.
(1) Control wire interconnections
1.
(2) Power wire (AC input, Bypass input, AC output) interconnections
a.) From user's distribution panel
1. X1 (A-phase) to A bus bar in UPS
2. X2 (B-phase) to B bus bar in UPS
3. X3 (C-phase) to C bus bar in UPS
b.) DC Input to UPS
1.
2.
CAUTION : After the completion of the input power cables connection:
9900CX SERIES UPS
OWNERS / TECHNICAL MANUAL
DC Voltage
Battery CB ON Auxiliary to terminal TN11-14-21,22 of external I/F PCB
IOAU-19.
Positive cable to BP bus bar in UPS
Negative cable to BN bus bar in UPS
With a phase rotation meter, check that the phase rotation of the
AC Input power terminals A, B and C as well as the Bypass Input
power terminals A40, B40 and C40 are correct. The proper phase
rotation is clockwise
A B C.
MITSUBISHI ELECTRIC 9900CX SERIES UPS
Rating (V) Current Permitted (A)
480
480
480
480
Page Number:
3-2
Maximum Fault
25,000
25,000
25,000
25,000