Model: GAVR20A (Model number 20a) Color: Gavr20a Packing: Standard Overview This GAVR20A voltage regulator provides stable DC excitation for generator and alternator systems. It is built for continuous operation with precise output regulation to support consistent electrical performance under varying input conditions. Key benefits Stable voltage output: Regulation within +/1.0 percent ensures consistent DC output for reliable excitation and reduced fluctuation in generated power. Wide input tolerance: Accepts 190 to 264 VAC input at 50 to 60 Hz nominal, allowing operation across a broad range of supply voltages. Handles continuous and shortterm peaks: Continuous output current rating of 4 A DC with intermittent capability of 6 A for up to 10 seconds accommodates brief load surges without immediate failure. Clear performance limits: Maximum output voltage is 90 V DC at a 207 VAC input, and minimum resistance requirement is 15 ohms, making integration and load matching straightforward. Designed for continuous service: Intended for sustained operation to support steady conversion and system reliability. Technical specifications Input voltage: 190 to 264 V AC Frequency: 50 to 60 Hz nominal Output voltage: Maximum 90 V DC at 207 V AC input Continuous current: 4 A DC Intermittent current: 6 A for 10 seconds Minimum resistance: 15 ohms Regulation: +/1.0 percent Model number: GAVR20A / 20a Packing: Standard Typical applications Generator excitation control: Use as a replacement or upgrade regulator for small to medium generator sets to maintain stable excitation and minimize output voltage variation. Industrial alternators: Control DC excitation in industrial alternator systems where precise voltage regulation and tolerance of input variation are required. Backup power systems: Integrate into standby or emergency power installations to ensure consistent performance during prolonged operation and during brief load surges. Installation and compatibility notes Verify system wiring and minimum resistance requirements before installation. The regulator expects a minimum load resistance of 15 ohms. Confirm that the system can supply the required input range of 190 to 264 VAC at 50 to 60 Hz and that expected output loads do not exceed the continuous 4 A DC rating. Short peaks up to 6 A are supported for up to 10 seconds. This model offers a straightforward technical solution for applications that require controlled DC excitation with tight regulation and the ability to operate across a wide input voltage range.