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The LVP series variable-load phase-shifter is a high-tech product for on-site reactive power compensation in large and medium-sized wound-rotor motors, suitable for 75–10,000 KW wound-rotor asynchronous motors in various industries. The excellent performance of the LVP series of variable-load phase-shifters is reflected in the following aspects: ● It innovatively solves the problem of on-site compensation for motors under variable loads, filling the technical and product gap in this field in China. ● It features advanced AC-AC frequency conversion technology and microcomputer control technology, ensuring high reliability. ● 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 motor’s temperature rise is significantly reduced, its efficiency and overload capacity are **improved**, and its service life is extended. ● Its compensation performance is far superior to that of capacitive compensation: it not only improves the power factor of the circuit, but more importantly, it enhances the power factor of the motor itself. ● Its overall performance is superior to that of rotary feeders: it is microcomputer-controlled, capable of automatically tracking changes in the motor’s operating conditions and adjusting relevant parameters to achieve the best compensation effect ； It has no moving parts, thus offering greater adaptability to the environment. ● Its compensation performance under variable load conditions is far superior to that of ordinary static phase shifters: equipped with dual CPU control, it can adjust relevant parameters in real time according to load changes to achieve dynamic compensation, keeping the power factor at its optimal level at all times. ● It features a user-friendly interface that is easy to operate, as well as comprehensive and reliable automatic fault protection mechanisms; maintenance does not disrupt production. Technical parameters and performance features ● Can bring the motor’s power factor to over 0.95 (or increase it by more than 20%) ； ● The motor stator current decreases by 10%–20% ； ● The temperature rise of the motor windings decreases by more than 10% ； 2. Input and output parameters Input: ● Motor stator current signals (01, 04): Standard 0–5A signals output from a current transformer of a certain phase. ● Motor stator voltage signals (05, 06): For high-voltage motors, this signal is a 100V standard line voltage signal output through a voltage transformer ； For low-voltage motors, this signal is directly the 380V line voltage signal. Note: The current and voltage signals of the motor stator taken cannot be in the same phase; that is, if the current is from phase A, the voltage signal must be from either phase B or phase C. ● Start completion signal (W, 111): A rotor short-circuit signal from the starter, provided by the star-point short-circuit contactor; this signal must remain active, with contact rating of 5A at 380V. Output: ● Start (ready) signal (121, 123): This signal is used for interlocking with the motor primary cabinet; it is connected in series in the start button circuit, with contact capacity of 5A at 380V. ● Fault shutdown (trip) signals (125, 129) and (131, 133): These signals are used for interlocking with the motor primary cabinet; only one of these sets is used depending on the situation. (125,129) are used for switches that cause the circuit breaker to trip when powered; they are connected in parallel with the stop button ； (131, 133) are switches used for contactor-type tripping in the event of power loss; they are connected in series with the stop button. Contact capacity: 5A, 380V. Operating conditions: Ambient temperature: -40°C to +50°C; relative air humidity not exceeding 90%; altitude not exceeding 2000 meters (special design may be applicable for altitudes above 2000 meters depending on specific circumstances); ground slope not greater than 5°. The installation location should be free from fire and explosion hazards, as well as chemical corrosion and severe vibrations. (If there are any special usage conditions, please specify them and discuss them at the time of ordering.) Xiangyang Yuanchuang Electrical’s reactive power on-site compensation equipment: LVP series variable-load phase-shifters | Static phase-shifters | Variable-load phase-shifters | High-voltage compensation devices | High-voltage dynamic compensation cabinets | High-voltage capacitor compensation cabinets | High-voltage reactive power compensation cabinets