0.75 kW shaft scenario
- Estimated line current
- 1.415 A
- Estimated electrical input
- 0.833 kW
- Shaft output
- 0.75 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
VALICALC · TECHNICAL REFERENCE
Motor Current Estimate Reference
Compare authored three-phase motor current estimates by shaft kW at your voltage, efficiency and power factor. Nameplate current and code FLC remain separate.
ValiCalc · Motor Current Estimate Reference
https://www.valicalc.com/motor-current-estimate-reference
Dataset v1.3.0 · verified 2026-10-07
Display: metric. RMS line-to-line voltage: 400 V · Assumed shaft efficiency: 90 % · Assumed power factor: 0.85
SCENARIO MATRIX
Search within the verified subset. Numeric sizes match complete designations; a nearby size is a candidate, not an exact match.
SELECTED REFERENCE
0.75 kW shaft scenario
- Estimated line current
- 1.415 A
- Estimated electrical input
- 0.833 kW
- Shaft output
- 0.75 kW
All fields & cell provenance
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
- Shaft output scenario: Motor input power, current and efficiency relationship — Authored rated-output scenario, not a listed motor or code-table value · verified 2026-10-07 · source value 0.75 kW shaft scenario.
- Estimated line current: Motor input power, current and efficiency relationship — Authored rated-output scenario, not a listed motor or code-table value · verified 2026-10-07.
- Estimated electrical input: Motor input power, current and efficiency relationship — Authored rated-output scenario, not a listed motor or code-table value · verified 2026-10-07.
- Shaft output: Motor input power, current and efficiency relationship — Authored rated-output scenario, not a listed motor or code-table value · verified 2026-10-07.
- Entered line-line voltage: Motor input power, current and efficiency relationship — Authored rated-output scenario, not a listed motor or code-table value · verified 2026-10-07.
- Entered efficiency: Motor input power, current and efficiency relationship — Authored rated-output scenario, not a listed motor or code-table value · verified 2026-10-07.
- Entered power factor: Motor input power, current and efficiency relationship — Authored rated-output scenario, not a listed motor or code-table value · verified 2026-10-07.
v1.3.0 · verified 2026-10-07 · values use the valid conditions shown above
Use this value
Review the selected values and units in the calculator before applying them.
Use conditional estimated current →0.75 kW shaft scenario1.415 ABack to answer ↑
Explore the verified data
10 matching rows · 10 in this subset
| Shaft output scenario | Estimated line current | Estimated electrical input | Shaft output | Actions |
|---|---|---|---|---|
| 0.75 kW shaft scenario | 1.415 A | 0.833 kW | 0.75 kW | |
| 1.5 kW shaft scenario | 2.83 A | 1.667 kW | 1.5 kW | |
| 2.2 kW shaft scenario | 4.151 A | 2.444 kW | 2.2 kW | |
| 4 kW shaft scenario | 7.547 A | 4.444 kW | 4 kW | |
| 7.5 kW shaft scenario | 14.151 A | 8.333 kW | 7.5 kW | |
| 11 kW shaft scenario | 20.754 A | 12.222 kW | 11 kW | |
| 15 kW shaft scenario | 28.301 A | 16.667 kW | 15 kW | |
| 22 kW shaft scenario | 41.509 A | 24.444 kW | 22 kW | |
| 30 kW shaft scenario | 56.603 A | 33.333 kW | 30 kW | |
| 55 kW shaft scenario | 103.772 A | 61.111 kW | 55 kW |
1.5 kW shaft scenario
- Estimated line current
- 2.83 A
- Estimated electrical input
- 1.667 kW
- Shaft output
- 1.5 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
2.2 kW shaft scenario
- Estimated line current
- 4.151 A
- Estimated electrical input
- 2.444 kW
- Shaft output
- 2.2 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
4 kW shaft scenario
- Estimated line current
- 7.547 A
- Estimated electrical input
- 4.444 kW
- Shaft output
- 4 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
7.5 kW shaft scenario
- Estimated line current
- 14.151 A
- Estimated electrical input
- 8.333 kW
- Shaft output
- 7.5 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
11 kW shaft scenario
- Estimated line current
- 20.754 A
- Estimated electrical input
- 12.222 kW
- Shaft output
- 11 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
15 kW shaft scenario
- Estimated line current
- 28.301 A
- Estimated electrical input
- 16.667 kW
- Shaft output
- 15 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
22 kW shaft scenario
- Estimated line current
- 41.509 A
- Estimated electrical input
- 24.444 kW
- Shaft output
- 22 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
30 kW shaft scenario
- Estimated line current
- 56.603 A
- Estimated electrical input
- 33.333 kW
- Shaft output
- 30 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
55 kW shaft scenario
- Estimated line current
- 103.772 A
- Estimated electrical input
- 61.111 kW
- Shaft output
- 55 kW
More dimensions
- Entered line-line voltage
- 400 V
- Entered efficiency
- 90 %
- Entered power factor
- 0.85
KEEP THE JOB MOVING
Where does this result go next?
How to use this data
I=shaft output W/(efficiency fraction × √3 × RMS line-line V × PF). This rearranges the disclosed power relationship; it does not establish permitted wire or protection sizes.
CHECK THE METHOD
Worked example
7.5 kW shaft output at 400 V, efficiency 90% and PF 0.85 gives about 14.151 A. Lower efficiency or PF increases the estimate.
Continue the reference workflow
Common lookup questions
What should I confirm before using this lookup?
Not an ampacity, breaker, protection or installation-code selection. Verify the actual electrical system and equipment nameplate; voltage-drop checks remain separate.
TRACEABLE DATA
Sources, scope & verification
Dataset v1.3.0
Last verified:
Ten authored shaft-power scenarios. Balanced three-phase, stated PF/efficiency; no startup, locked-rotor or standard-table FLC.
Values are curated product facts or generated scenarios. Paid standards, complete catalogs and source diagrams are not reproduced. A verification date applies to this documented subset.
Motor input power, current and efficiency relationship ↗
Type A · US Department of Energy · Determining Electric Motor Load and Efficiency, equations 1–2, 1997
Original equations, chosen scenarios and generated values; no copied tables or drawings.
Full provenance & artifact record
- Source checked
- 2026-10-07
- Use basis
- authored-formula
- Artifact SHA-256
- No retained source artifact hash; see the stated source and verification record.