Issue:
Documentation or calculator to find voltage drop on busways.

Product Line:
Busways

Environment:
I-Line, I-Line II, and Powerbus Busways.

Cause:
How to find/calculate voltage drops on busways.

Resolution:
Yes, Tables 9 through 11 on pages 41 & 42 of Square D I-Line and Power-Zone Busway Systems Catalog shows I-Line/I-Line II voltage drop in Volts per 100 ft based on a single concentrated load at the end of the busway run. For distributed loading, divide the values shown by two (2). Table 97 on page 129 shows voltage drop for Powerbus offer.

NOTES:

1. For optimized values on a specific application, contact your local Schneider Electric Representative.
2. For balanced 3-phase line-to-line voltage drop 4-wire busway, use values from tables.
3. For balanced 3-phase line-to-neutral voltage drop, multiply values from tables by .577.
4. For single-phase voltage drop, multiply values from tables by 1.15.
5. For other than rated current, multiply values from tables by Actual Current ÷ Rated Current For different lengths, multiply values from 60 Hz tables by Actual Footage ÷ 100 ft
6. Voltage drop calculations for 50 Hz can be made by substituting the appropriate “x” value from Voltage Drop Sample Calculations (60 Hz) into samples No.1 and 2 below. For other frequency values (e.g., 400 Hz), contact your local Schneider Electric representative for assistance.
7. For plug-in distributed loads, divide the voltage drop by 2. See IEEE Standard 141-13.8.3.

VOLTAGE DROP SAMPLE CALCULATIONS (60 HZ)

Publicado para: Schneider Electric Mexico