Table 3.4 Recommended Cable Sizes; Table 3.5 Recommended Hardware - Mitsubishi Electric 9900B Series Owner Technical Manual

kVA Input Output
Capacity Voltage Voltage
300kVA 480V 480V
500kVA 480V 480V
750kVA 480V 480V
*1 – Use 75 degree C copper wire.
*2 - The cables must be selected to be equal or larger to the sizes listed in the table.
*3 - Voltage drop across power cables not to exceed 2% of nominal source voltage.
*4 - Allowable ampere-capacities based on copper conductors with 75 degree C. insulation at ambient temperature of 40 degree C.
▲ For other stored energy systems, refer to the attached supplement.
Table 3.5 Recommended Hardware
UPS Capacity Bolt size
300kVA M12 x 40mm
500kVA M12 x 40mm
750kVA M12 x 40mm
MITSUBISHI
ELECTRIC OWNERS / TECHNICAL MANUAL

Table 3.4 Recommended Cable Sizes

Input Side
Cable Torque
Size in. lbs
3 x 1/0 347 - 469 3 x 1/0
or larger in. lbs or larger
3 x 250MCM 347 - 469 3 x 250MCM
or larger in. lbs or larger
3 x 600MCM 347 - 469 3 x 600MCM
or larger in. lbs or larger
Split
Flat washer
lockwasher
size
size
M12 M12
M12 M12
M12 M12
MITSUBISHI ELECTRIC 9900B SERIES UPS
9900B SERIES UPS
*1, *2, *3, *4, ▲
Output Side
Cable Torque Cable
Size in. lbs Size
347 - 469 3 x 1/0
in. lbs or larger
347 - 469 3 x 250MCM
in. lbs or larger
347 - 469 3 x 600MCM
in. lbs or larger
Nut size
M12
M12
M12
Page Number:
3-5
Bypass Side DC Input Side
Torque Cable
in. lbs Size
347 - 469
3 x 300MCM
in. lbs
347 - 469
4 x 400MCM
in. lbs
347 - 469
5 x 700MCM
in. lbs
Torque
in. lbs
347 - 469
in. lbs
347 - 469
in. lbs
347 - 469
in. lbs