Thread Content
Suyuan Electric LP series static phase shifters: variable-load phase shifters, constant-load phase shifters. ■ Application range: Suitable for on-site power factor compensation of constant-torque and variable-torque loads driven by wound-rotor AC asynchronous motors. It has the effects of reducing stator current, lowering winding temperature rise, improving the motor’s power factor, and reducing losses. ■ Working Principle and Features ● It utilizes a microcomputer and AC-AC frequency conversion technology to generate a three-phase power supply through power electronic devices. This supply has the same frequency as the motor rotor’s potential, a 90° phase difference from it, and an equivalent amplitude; it is connected in series with the rotor circuit to alter the power factor on the rotor side, thereby changing the power factor on the stator side and achieving reactive power compensation ； ● Fully digital design, high precision, high reliability ； It features a working system independent of the motor, allowing for debugging, maintenance, and repair without having to stop the motor ； ● It enables automatic tracking of rotor current, has a wide range of applications, and can be used for both constant-torque and variable-torque loads ； ● It can raise the motor power factor to a range of 0.95–0.99, reducing reactive power by over 60% ； ● Reduce the motor stator current by 10%–20%, thereby reducing wire losses and copper losses by 20%–30% ； ● The energy-saving and consumption-reduction effects are significant, with the costs being recouped in about half a year. ■ Main technical parameters ● Motor power factor: above 0.95 (or an increase of over 20%) ； ● Motor stator current: Reduce by 10%～20% ； ● Motor winding temperature rise: Decrease by more than 10% ； ● Protection rating: IP20, IP30. ■ Meets standards ● Electric control equipment, Part 2 ； Electrocontrol equipment equipped with electronic devices GB3797－1989 ； ● LP-type prohibitive phase-advancing regulator Q/XWZ1-2000 ■ Operating environmental conditions ● Ambient temperature: –40℃～＋50℃ ； ● The relative air humidity should not exceed 90% ； ● The altitude should not exceed 2000 meters (for areas above 2000 meters, a special design can be adopted based on specific operating conditions) ； ● The ground inclination shall not exceed 5° ； ● The installation site is free from fire and explosion hazards, as well as chemical corrosion and severe vibrations. Note: If there are special usage conditions, please state them and discuss them with the manufacturer at the time of ordering.