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[Kakka]

I have a setup with three booster pumps operating in parallel, connected to a common discharge line, which then feeds into three injection pumps, also running in parallel.

• The booster and injection pumps have the same specifications.
• The motors driving all six pumps are identical in specifications.
• These pumps and motors have been operating for around 40 years.

Currently, the pump head for all six pumps matches the OEM performance curve. Additionally:

• The brake power and efficiency of the booster pumps align with the expected performance.
• The motors driving the booster pumps consume power as per the design specifications.

However, the issue I’m facing is that the motors connected to the injection pumps are consuming 5% more power than expected.

Given that:
✔ The head curve is matching
✔ There is no seal leakage or cavitation

I suspect that motor efficiency may have reduced over time, leading to higher power consumption. Could this be the reason, or are there other possible factors I should consider?

Would appreciate any insights or corrections from experts on this!