60 Hz and Special Voltage Pipeline Pumps and CDL Multistage Pumps
A motor runs about 20% faster on 60 Hz than on 50 Hz. A pump designed for 50 Hz then gives about 20% more flow and 44% more head, and needs about 73% more power, which its motor cannot provide.
Why this matters more for some pumps
- Multistage CDL pumps reach high pressures already; 44% more head can push the system over its pressure rating
- Pipeline pumps sit in closed loops where the system pressure limit of 1.6 MPa includes the pump head
- Large motors are expensive to replace after the fact
What we do
For a 60 Hz supply we select the hydraulics for the 60 Hz duty and fit a motor wound for it, at your voltage: for example 380 V or 460 V, or 440 V on ships.
What to send
- Voltage, frequency and phases
- Flow and head at the duty point
- Liquid and temperature
- System pressure
More on frequency in our article on 60 Hz and special voltage pumps.
Products in This Series
Pipeline Centrifugal Pumps & CDL Multistage PumpsPipeline Pumps for HVAC Chilled and Condenser Water Circulation
Vertical inline pumps for chilled water and condenser water loops in HVAC systems: what sets the flow and head, and why closed-loop pressure matters.
Pipeline Centrifugal Pumps & CDL Multistage PumpsBuilding Water Supply Pumps: 25 m³/h at 30 m in Cast Iron
A vertical pipeline pump for 25 m³/h at 30 m of clear water up to 90 °C: the ISG65-160 with a 4 kW motor, and how it was matched to the duty.
Pipeline Centrifugal Pumps & CDL Multistage PumpsSmall Hot Water Pipeline Pumps: 6.3 m³/h at 20 m for Heating Loops
A 40 mm hot water pipeline pump for 6.3 m³/h at 20 m, ordered for water from -20 to 80 °C. What a small heating loop pump needs to cover.
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