55KW motor driven lift 70M, the displacement of 180 cubic meters per hour of water pump, the configuration should be no problem, but after the start of the current to 170A (rated 100A), off a small valve to the current export half to reach the rated current. Why current will close a small valve instead of small? Will close a small valve will not affect traffic flow can be? To the 180 party?
170A has shown that the motor is overloaded; the head 70M; the displacement of 180 cubic meters; the approximate power is 42Kw (efficiency is higher). At this point, the current of the corresponding motor should be approximately 86A;The power of water pump is related to the quantity of water transported. The water pump is a passive energy conversion device, and it has no regulating ability. It depends entirely on the intersection of its pipeline characteristics and its own characteristics,No, your situation is the pump and pipeline characteristic, the pump head is higher than the resistance of pipeline, so that the water flow movement (increase too large). Pump power becomes largerShut down the water pump, the valve will certainly reduce the amount of water, as for whether to reach 180, you can see the pressure gauge to show the pump lift to determine the pressure of less than 70 meters, the flow of more than 180
If the power line is too long or too small, power line is too long or too small will cause excessive current. Valve shut down certainly affect the flow. When the valve is in the semi open state, the water pump out of the water flow down, the power to reduce, so the current drops.
Flow multiplied by the head is powerFlow can reach less than 180 parties, efficiency is reduced, the size of the impeller can be adjustedAnswer the question, add, depends on the structure of the pump, if the vacuum pump, as you imagine
