Subaru Robin Power Products RGV4100, RGV6100 Generator Operation, Generation of NO-LOAD Voltage

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5-3 GENERATOR OPERATION

Fig. 5-11

5-3-1 GENERATION of NO-LOAD VOLTAGE

(1)When the generator starts running, the permanent magnet built-in to the rotor generates 3 to 6V of AC voltage in the main coil and condenser coil wound on the stator.

(2)As one or two condensers are connected to the condenser coil, the small voltage at the condenser coil generates a minute current a which flows through the condenser coil. At this time, a small flux is produced with which the magnetic force at the rotor’s magnetic pole is intensified. When this mag- netic force is intensified, the respective voltages in the main coil and condenser coil rise up. As the current a increases, the magnetic flux at the rotor’s magnetic pole increases further. Thus the volt- ages at the main coil and condenser coil keep rising by repeating this process.

(3)As AC current flows through the condenser coil, the density of magnetic flux in the rotor changes. This change of magnetic flux induces AC voltage in the field coil, and the diode rectifier in the field coil circuit rectifies this AC voltage into DC. Thus a DC current b flows through the field coil and magne- tizes the rotor core to generate an output voltage in the main coil.

(4)When generator speed reaches 3000 to 3300 rpm, the current in the condenser coil and field coil increases rapidly. This acts to stabilize the output voltage of each coils. If generator speed further increases to the rated value, the generator output voltage will reach to the rated value.

5-3-2 VOLTAGE FLUCTUATIONS UNDER LOAD

When the output current c flows through the main coil to the appliance, a magnetic flux is produced and serves to increase current a in the condenser coil. When current a increases, the density of magnetic flux across the rotor core rises. As a result, the current flowing in the field coil increases and the genera- tor output voltage is prevented from decreasing.

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Contents RGV2800, RGV4100, RGV6100 Generators Contents Specifcations Generator Trouble Shooting Disassembly and AssemblyTroubleshooting Wiring DiagramRGV2800 RGV4100 SpecificationsEngine ModelEH34D RGV6100250 125 240 120 230 115 220 110 230V/115V Load Rated Perfomance CurvesDC Output Features LONG-LIFE Durability Minimal MaintenanceExternal View General DescriptionOIL Drain Plug RGV2800 U.S.A., 60Hz-120V Nema Receptacle Control PanelRGV4100 U.S.A., 60Hz-120V/240V Nema Receptacle RGV6100 U.S.A., 60Hz-120V/240V Nema Receptacle Location of Serial Number and Specification NumberStator Construction and FunctionConstruction FunctionRotor CondenserRGV2800 NO-FUSE BreakerDC Circuit Breaker Object or ProtectionAC plug Description Style AmpereConnecting to Domestic Circuits House Wiring 240V appliance Generation of NO-LOAD Voltage Generator OperationVoltage Fluctuations Under Load 120/240 Half of rated output Rated output Full Power Switch Dual Voltage TypeSwitch PositionPage HOW IT Operates Power supplyDescription Principle of Sensing OIL LevelAutomatic stop of engine Block Diagram of the CircuitJudgement of oil level Decision of oil shortagePage Operate the generator on a level surface Safety PrecautionsDo not connect the generator to the commercial power lines Do not place inflammable materials near the generatorMercury lamps with a smaller power factor Incandescent lamp, heater, etc. with a power factorRange of Applications RGV2800 RGV4100 RGV6100 Appliances without any indication as to power consumptionArea / mm3 Current / a Sectional Allowable Gauge No Resistance10 a 12 a 15 a 1 Dr. Robin Generator Tester Measuring ProceduresSpecifications Measuring InstrumentsVoltmeter InstrumentsCircuit Tester DC Output Measuring AC Output MeasuringRated voltage 120 240 Stator Measuring Insulation ResistanceRotor Control Panel Voltmeter Checking Functional MembersAC Receptacles Winding Specification AC Winding CondenserCondenser Rotor Assembly75 Ω 77 Ω 60 Ω Circuit tester Orange Diode RectifierChecking table for analogue circuit tester Apply red plus needle BrownBrown / White Checking table for digital circuit testerApply black minus needle Brown Circuit testerPreparation and Precautions Disassembly and AssemblyStep Part to remove Description Remarks Tool Disassembly ProceduresRubber Pipe Hose Clamp Step Part to remove Description Remarks Tool M8 flange nut pcs Rear Cover Stator Cover Rear Cover Brushing Spring Seal Tape Part to remove Description Remarks Tool Tightening torque 11.3 13.2 N-m RGV2800 Assembly ProceduresFront Cover Tightening torque 11.8 13.7 N-mTightening torque 5.9 N-m Rear CoverFrame END Cover RGV4100 onlyTightening torque 21.6 27.4 N-m Tightening torque 9.8 N-mTightening torque 18.6 24.5 N-m Tightening torque 6.9 N-m Front Panel DisassemblyChecking of the Front Panel Tightening torque 1.5 N-m ReassemblyChecking Stator TroubleshootingNo AC Output Checking CondenserRemedy Checking RotorChecking Rotor How to adjust engine r.p.mAC Voltage is TOO High or TOO LOW Checking Engine SpeedCheck the Insulation of the Generator Check the Engine SpeedCheck the Appliance for Trouble Check if the Engine is OverheatedNo DC Output Idle Control Engine Speed is not Increased When a Load is AppliedCheck the DC Coil Dual Voltage Type Single Voltage TypeApply red plus needle Normal Resistance Engine Speed is not Reduced When Load is OFFRGV2800 U.S.A., 60Hz-120V Type Nema Receptacle Wiring DiagramRGV4100 U.S.A., 60Hz-120V/240V Type Nema Receptacle Generator RGV6100 U.S.A., 50Hz-120V/240V Type Nema ReceptacleRGV4100, 6100 Electric Starter Type Wiring color cordOdelM RGV4101RGV6101RGV4101 RGV6101 Generator TroubleshootingRGV4101 85 Ω RGV4101 RGV6101 Check the Engine Speed No DC Output Checking table for analogue circuit tester Idle Control Optional Equipment Idelcontrolunit Output Wire ZCT TheIDELCONTROLUNIT Range of Applications Appliances without any indication as to power consumption Sectional Allowable Gauge No Resistance RGV4101 Electric starter model RGV4101RGV6101 Electric starter model RGV6101Lively Blvd. Wood Dale, IL 60191 Phone 630-350-8200 Fax