Installation Information
32.Required parallel system wiring length must be in accordance with the following formula, as referenced to the diagram below, to ensure approximately equal current sharing when in Static Bypass mode:
(Total length of 1A + 1B) ≅ (Total length of 2A + 2B) ≅ (Total length of 3A + 3B) ≅ (Total length of 4A + 4B) (30 + 25) ≅ (35 + 20) ≅ (40 + 15) ≅ (45 + 10)
This rule has a tolerance of approximately ±10% for the combined input and output wire lengths.
If installing only two UPMs in a fully redundant system, this requirement is no longer required, as each UPM is capable of supporting the full bypass requirement. However, this would preclude future expansion.
Bypass inputs to UPMs
1A (30)
2A (35)
3A (40)
4A (45)
UPM 1
Battery |
UPM 2 |
Battery |
UPM 3 |
Battery |
UPM 4 |
Battery |
Outputs from UPMs
1B (25)
2B (20)
3B (15)
4B (10)
NOTE: Wire lengths in the diagram and formula are in feet and are for example only.
DESCRIPTION: POWER WIRING INSTALLATION NOTES
DRAWING NO: |
| SHEET: 15 of 15 |
REVISION: A | DATE: 091505 | |
