ABB AC 800M, Installation Manual

Page: 70 / 80

Primary Network Configuration Section 3 Installation
70 9ARD000015-600
Section 2 electric current = 0.25 A + 0.25 A + 1.15 A = 1.65 A.
Table 13 electric current limit for 400 ft (Section 1) = 2.63 A.
Table 13 electric current limit for 400 ft (Section 2) = 2.63 A.
Conclusion : Section 1 is overloaded.
Solution : Move the supply in the direction of the overloaded section.
Figure 26 shows a solution to Single supply center-connected with overload.
Calculation method :
Section 1 = 300 ft.
Section 2 = 500 ft.
Section 1 electric current = 1.1 A + 1.25 A = 2.35 A.
Section 2 electric current = 0.5 A + 0.25 A + 0.25 A + 0.85 A = 1.85 A.
Table 13 electric current limit for 300 ft (Section 1)= 3.51 A.
Table 13 electric current limit for 500 ft (Section 2) = 2.10 A.
Conclusion : No overload on either of the sections. This configuration is feasible.
Figure 26. Solution to Single Supply Center-Connected with Overload
Power Tap
Power
Supply