Irrigation and transfer
Establish total dynamic head, flow and water conditions before selecting a pump and motor.
SOLUTIONS / APPLICATION GUIDE
Agribusiness & water systems
Plan power for irrigation, processing, ventilation and cold storage around the seasonal duty. Start with flow, head, operating hours and critical loads.
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CHOOSE YOUR APPROACH
Start with the application.
Processing and handling
Review conveyors, mixers and mills for starting load, dust and cleaning conditions.
Cold-chain continuity
Separate critical refrigeration loads and verify backup starting capacity and run time.
BUILD A USEFUL BRIEF
Bring these details.
- Required flow, total dynamic head and water quality
- Seasonal operating hours and available power
- List of process motors and cold-room loads
- Site conditions, cable distances and expansion plans
Can solar sizing alone determine an irrigation system?
No. Water demand, storage, pump curves, daily irradiance and available pumping hours must be considered together.
COMPONENTS THAT COMPLETE THE APPLICATION
Specify the whole working system.
Start with the equipment duty. Add the control, protection and measurement functions that your project needs; these are options to review, not a pre-approved assembly.
Images are AI-generated illustrations of equipment categories, not LOVATO model photographs. Confirm dimensions and ratings from the selected model datasheet.
Automation & control
Level controls and float switches
Control filling or pumping from reliable level signals.
Confirm: Fluid properties · probe or float · dry-run strategy.
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Motor protection & control
Variable speed drives
Match motor speed to process demand where the application permits.
Confirm: Motor current · load torque · speed range and cooling.
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Motor protection & control
Motor protection circuit breakers
Protect individual motor circuits as part of a coordinated starter.
Confirm: Motor full-load current · fault level · starter coordination.
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Automation & control
Monitoring relays
Identify phase, voltage or current conditions that need an alarm or trip.
Confirm: Monitored quantity · operating window · reset behaviour.
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Automation & control
Micro PLCs and HMI
Define the operating sequence, inputs and operator interface together.
Confirm: I/O schedule · communications · operator screens.
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Continue into equipment & assemblies
Variable Frequency Drive (VFD) Panels ↗Industrial Electric Motors ↗METHODS & WORKED EXAMPLES
Understand the estimate.
These examples use the default inputs. Change the live controls above for your own scenario; the reference examples below remain fixed.
Water pumping duty — worked example
Hydraulic power (kW) = 9.81 × flow (m³/h) × total head (m) / 3600. Divide by pump and motor efficiency fractions for electrical input.
Example inputs
- Water flow: 36 m³/h
- Total dynamic head: 50 m
- Pump efficiency: 70 %
- Motor efficiency: 90 %
- Daily operation: 8 h
Example result
- Hydraulic power: 4.905 kW
- Electrical input: 7.786 kW
- Daily energy: 62.29 kWh
Assumptions & limits
- Clean water density assumed 1000 kg/m³; gravity 9.81 m/s².
- Head must include static lift and pipe / fitting losses.
- Match pump curves and check NPSH, water quality and starting demand. No pump or motor size is selected.
- Preliminary planning only. Final selection needs project-specific engineering verification.
Technical reference: KSB: pump power input. This reference does not certify the website calculation or an NPE assembly.
Motor starting current — worked example
Example inputs
- Motor rating: 55 kW
- System voltage: 415 V — industrial
- Phase: 3Φ (three phase)
- Starting method: Direct on line (DOL)
- Efficiency: 92 %
- Power factor: 0.86
Example result
- Full load current: 96.7 A
- Starting current: 580 A
- Starting multiplier assumption: 6 × FLC
Assumptions & limits
- Starting multipliers are illustrative, not measured inrush or guaranteed torque.
- Verify motor nameplate, load acceleration, supply limits and starts per hour.
- Preliminary planning only. Final selection needs project-specific engineering verification.
Solar PV sizing — worked example
Example inputs
- Simultaneous peak AC load: 5 kW
- AC load power factor: 0.9
- Daily consumption: 12 kWh
- Peak sun hours: 5.5 h
- Panel wattage: 550 W
- Days of autonomy: 1
- Inverter: 1Φ (single phase)
- Storage chemistry: Lithium — 85 % usable
Example result
- Array size: 2.8 kWp
- Panels required: 6
- Indicative inverter class: 8 kVA
Assumptions & limits
- Hybrid inverter: 8 kVA, 1Φ single phase
- System losses assumed: 22 % (soiling, temperature, wiring)
- Peak sun hours: 5.5 h/day
- Inverter class considers entered simultaneous peak load and load power factor. Verify motor surge, overload duration, PV input limits and manufacturer ratings separately.
- Preliminary planning only. Final selection needs project-specific engineering verification.