Wacker Neuson G 2.5A Repair Manual

Also see for G2.5A: Operator's manual Operator's manual

Contents

Wacker Neuson G 2.5A Repair Manual Manual pdf 52 page image

G 3.7A;G/GS 5.6A;GS 8.5V;GS 9.7V Portable Generator Repairwc_tx000208gb.fm 486. G 3.7A;G/GS 5.6A;GS 8.5V;GS 9.7V6.1 Theory of Operation – Brush GeneratorsSee Graphic: wc_gr000941Basic Generator TheoryThese generator models use a brush/slip ring design to generate andregulate power and consist of a rotor, stator, diode bridge, and anauxiliary winding. They also incorporate a choke that is connected inseries with the auxiliary winding. The choke’s purpose is to bring thecurrent in the auxiliary winding “in phase” with the main windings. Thecurrent from the auxiliary winding is carried to the rotor via the brushesand slip rings (g).The generators also contain an Automatic Voltage Regulator (AVR)that maintains a specific voltage output regardless of load. The voltageregulator accomplishes this by regulating DC current from the auxiliarywinding. When the load on the generator increases, the voltageregulator allows additional DC current into the main rotor. Theadditional DC current allows the generator to increase output andmaintain the desired output voltage.These models are designed to operate with close regulation whensupplying single phase loads. The principle of operation isschematically represented and a cross-sectional view is shown. Theauxiliary winding (a) provides excitation power through a choke (b) andbridge rectifier (c) into the rotor winding (d) via slip rings and brushes(e). The AVR (f) diverts excess excitation to maintain the statorwinding (g) output voltage within close limits. The main stator windingis designed for series/parallel connection to give a dual voltage output.wc_gr000941abcdfge