Star Delta starting is the best known and perhaps the most widely used low voltage starting method.
It is used to start the pump's motor wit lower levels of mechanical stress and with current limitation during start-up; it does this with the aid of a timed system which switches the control contractors installed inside the panel.
Star-delta starting reduces starting current and torque to values of 33% (1/3) of those measured during direct starting.
During start-up, the currents flowing through components are lower than the motor's related current.
The Laval R-Cam 1000 XLT downhole camera is a completely portable, self-contained video inspection system that can inspect boreholes up to 300 metres (1000 ft) deep and 30.5cm (12ins) in diameter. New adjustable lighting and hard drive storage.