Stamford alternator

QFW series generator Products introductions These series alternators can be couple with various internal combustion engines to from the gen-set for stationary or mobile power and suit for primary and standby power. Altitude above sea level not over 1000 meters Relative humidity of cooling air: not exceeding not exceeding 90%; Power range 10kW-800kW Electric Performance Exciting system Brushless excitation with solid-state circuit AVR, which is encapsulation for moisture and vibration protection Insulation class These series alternators adopt class H insulation. Frequency Rate frequency of these series alternators is 50Hz, rate voltage is 400V. According to the users requirement, we can also make 60Hz, 400V or 480V. Power factor The power factor of this series alternators is 0.8(lag) and 1. We can also design alternators whose power factor is less than 0.8(lag). Steady voltage regulation factor Steady voltage regulation factor of these series alternators is between ±1%. Transient performance When power factor is 0.8(lag), add rate load suddenly, the transient voltage drop is less than 15%, and when power factor is 0.8(lag), reduce rate loud suddenly, the transient voltage rise is less than 20%UN, stable time is less than 1.5s. Curve Line voltage curve sinusoidal deviation factor at no load THD is less than 5%Telephone harmonic factor is less than 5%. Voltage adjust range The voltage adjust range of alternators is 95%-105%UN. Parallel QFW series alternator for land use, when it assembled parallel peration mode, it can work on parallel operation condition. Terminals and terminal box Normal alternators are 3 phase, terminals are connected on the connection plate of the the non-driven end. It makes connect with AVR very easy that large terminal box is made of steel. Mechanical Performance Form QFW series alternator for land use has single bearing and two bearing generator for user choose. And supply conversion link connector and driven chip with main motor. Protection Protection class of QFW series alternator for land use is IP23, if necessary, we can improve the protection class. Protection class of outlet box is IP44. Bearings NSK Bearing we used Balance All of this series alternators rotors have been dynamic balanced, according to ISO 1940. Rotating direction All of this series alternator can rotate bi-directionally. Face to the shaft extension, rotating clockwise is positive phase sequence. Over speed The max over speed of QFW series alternator for land use is 1.2 rate speeds, and last not exceed 2 minute. Mechanical structure QFW series alternator for land use is made of high-quality steel plate Q235 which welding together. The material of the shaft is 45# steel.