FIELD CASE STUDY|PUMPING EQUIPMENT|ELECTRIC DRIVE · POWER CONSUMPTION
REPORT ON THE RESULTS OF TREATMENT UNDER CONTRACT No. 1
Pump K-80-60-160: less electricity for the same work
PRODUCTXADO technologysingle-stage treatment, four assemblies of the unit, without taking the pump out of service for repair
TEST OBJECTPump unit K-80-60-160electric motor AK11212U1 · 7.5 kW · 3000 rpm · cos φ 0.86
DOCUMENT TYPEReport under contract No. 1,
signed by client and contractor
signed by client and contractor
Key result
↓16.7-29.7%
current on all three phases under load, 10.2-12.8 → 8.5-9.0 A
| UNIT | SPECIFICATION | WHAT WAS MEASURED |
|---|---|---|
| Pump K-80-60-160 | Centrifugal, overhung type; 4 assemblies of the unit treated | Current on all three phases under load |
| Electric motor AK11212U1 | 7.5 kW · 3000 rpm · cos φ 0.86 | Current on all three phases at no load |
Current under load — the unit's operating mode
| PHASE | BEFORE TREATMENT | AFTER TREATMENT | CHANGE |
|---|---|---|---|
| Phase A | 12.8 A | 9.0 A | ↓ 29.7 % |
| Phase B | 11.6 A | 9.0 A | ↓ 22.4 % |
| Phase C | 10.2 A | 8.5 A | ↓ 16.7 % |
The report records a drop in the unit's current load of 2.7 A after 430 hours of operation.
No-load current — the motor's own losses
| PHASE | BEFORE TREATMENT | AFTER TREATMENT | CHANGE |
|---|---|---|---|
| Phase A | 12.8 A | 7.8 A | ↓ 39.1 % |
| Phase B | 11.4 A | 7.7 A | ↓ 32.5 % |
| Phase C | 9.8 A | 7.0 A | ↓ 28.6 % |
Before the treatment the no-load current was practically the same as the current under load: friction inside the unit consumed almost as much as the pumping itself.
Conclusion of the report
The contractor, ChPKP "Rigonda", stated in the report under contract No. 1: "The use of XADO technology reduces mechanical losses in the electric motor and in the unit as a whole, which leads to lower electricity consumption". The measurements confirm this at all six points — the current fell on each of the three phases both in the operating mode and at no load. The initial condition of the unit is evident from the figures themselves: under load it drew almost as much current as without it, meaning friction was eating up a considerable share of the power. After the treatment the current under load came down to 8.5-9.0 A, and this value held after 430 hours of operation — the effect is not a one-off reading taken right after the product was added. The saving over six months of round-the-clock operation was estimated by the contractor's formula at 6686 kWh.
The results refer to the pump unit K-80-60-160 with an AK11212U1 electric motor rated at 7.5 kW; on other units and duty modes the figures may differ. The electricity saving was calculated by formula by the contractor performing the treatment, ChPKP "Rigonda", and was not verified by measurement. The original report is published in full and available for download.
Current equivalent
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