Caterpillar 309-1019 VR6 Automatic Voltage Regulator (AVR)
Specification Details
Brand: Caterpillar (CAT)
Product Type: Automatic Voltage Regulator (AVR)
Model: VR6
Part Number: 309-1019
Alternate Part Number: 3091019
System: Generator Excitation / Voltage Regulation
PMG Excited Input: 63–105 VAC
PMG Frequency: 100/240 Hz
PMG Phase: 3 Phase
Sensing Input: 180–280 VAC
Sensing Frequency: 50/60 Hz
Sensing Phase: 1 or 3 Phase
CT Input: 1 A or 5 A AC
CT Frequency: 50/60 Hz
ACC Input : ±3 VDC
Output Voltage: 65 VDC
Output Current: 12 ADC
Mounting Type: Panel / Generator Mounting
Application: Generator Sets, Industrial Power Generation
Technology:Automatic Voltage Regulation / Excitation Control
Generator CompatibilityVarious CAT generator and genset applications; verify before installation
Certifications/Markings: CE, CSA, UL markings visible
Condition: Used Excellent Working (As Per Photos)
Shipping: Fast & Safe Worldwide Shipping Available.
The Caterpillar CAT VR6 309-1019 Automatic Voltage Regulator (AVR) is an industrial generator voltage regulation and excitation control module designed to maintain stable generator output voltage under varying operating and load conditions.
The VR6 regulator accepts both shunt-excited and PMG-excited power inputs. Its shunt-excited input supports 180–280 VAC at 50/60 Hz for 1- or 3-phase systems, while the PMG-excited configuration supports 63–105 VAC at 100/240 Hz, 3-phase. The unit provides a regulated excitation output of 65 VDC at 12 ADC.
The CAT 309-1019 VR6 AVR is commonly associated with Caterpillar generator sets, engines and generator systems, including applications using SR4/SR4B generators and various CAT generator-set platforms. Compatibility should always be confirmed against the generator model, wiring configuration and existing AVR part number before installation.
Its compact panel-mounted design, multiple adjustment controls and clearly identified terminal connections make it suitable for professional generator servicing, AVR industrial power-generation maintenance.
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