What does the manufacturer example show?
Schneider Electric's Easy UPS 3S 208/220 V installation document 990-6401C-001 lists nominal battery voltage for 20 blocks as plus or minus 120 VDC and nominal float voltage as plus or minus 136 VDC. It also lists end-of-discharge values separately. The different labels are deliberate.
Critical Power Drafting is independent and is not affiliated with Schneider Electric. This is a specific documentation example, not a recommended battery arrangement or charger setting. Preserve the manual's plus/minus notation and confirm the actual reference points; do not relabel either number as an unspecified terminal-to-terminal voltage.
Sources: Schneider Electric: Schneider Electric: primary reference checked 25 October 2026
How can a schedule appear inconsistent when the fields are different?
Illustrative example. A fictional reconciliation sheet has one row called battery voltage. The vendor submission supplies one nominal value and another float value. The drafter marks them as a conflict solely because they differ. The first correction is to split the quantity labels and retain their conditions, not choose whichever number appears more often.
A difference can be legitimate, but the labels alone do not establish that every drawing is correct. Check the selected UPS, battery configuration, manufacturer revision and actual terminals. A similarly named manual for another regional product is not interchangeable evidence.
Which drawing fields prevent the ambiguity?
Use the selected product terminology and retain each reference instead of inferring an operating envelope from a single nominal number.
| Record | Evidence or interpretation |
|---|---|
| Equipment | Exact UPS and approved battery configuration |
| Nominal quantity | Manufacturer label, value and unit |
| Float quantity | Separate labelled value and stated condition |
| Reference | Terminals, polarity and reference arrangement |
| Other states | End-of-discharge or other separately specified quantities |
| Authority | Approved source revision and responsible review |
Who closes a voltage-basis discrepancy?
The responsible power and battery design owners determine the accepted basis and any equipment implications. Record their clarification in the drawing revision history. Do not use this worksheet to adjust a charger, select protection, calculate insulation requirements or approve equipment suitability.
Engineering sign-off is performed only by the registered engineer on the job. A clarified drawing field is not evidence that the installed system has been configured or tested accordingly.
Common questions
What else should the bid team know?
Can nominal voltage be used as the float setting?
Not by copying the number. The actual approved equipment and battery requirements control.
Does a plus/minus label mean an unspecified end-to-end value?
No. Preserve the notation and confirm its reference arrangement.
Does this example specify a battery for another UPS?
No. It illustrates quantity labels in one identified manual.
Primary sources
- Schneider Electric: primary reference checked 25 October 2026Schneider Electric