Answer: Equipment that can accurately test all performance parameters that can accurately test the pump through precision instruments is a full -performance test table, and the national standard accuracy is B.

The flow of flow is measured with a precision pot rotation meter.

The process is determined with a precision pressure gauge.

The suction process is measured with precision vacuum.

The power is measured with a precision axis power machine.

Motor speed meter is measured. The efficiency is calculated based on the actual measurement value: r = RQN/102N.

The performance curve is drawn on the coordinates according to the real measurement value.

Answer: The power of the pump axis is the power passed to the pump on the design. In actual work, its operating point will change. Therefore, the power passed to the pump should have a certain amount. Therefore, the experience method is that the motor is more than the power of the pump axis.

Axis power:

0.1-0.55KW 1.3-1.5 times

0.75-2.2KW 1.2-1.4 times

3.0-7.5KW 1.15-1.25 times

11kW or above 1.1-1.15 times