Enhance your generator's performance with the AVR R438, a top-tier automatic voltage regulator designed specifically for brushless type generators. This essential accessory ensures your genset operates with optimal stability and efficiency, providing reliable power output under various conditions. Compatible with a wide range of brushless generators. Ensures smooth and stable voltage output. Easy installation and maintenance. construction for long-lasting reliability. Power input: 35-75VAC, (, or auxiliary winding, single, three-phase) Inductive detection: 90-480VAC Maximum output: DC8A 75V Protection function: Built in low-speed, overexcitation, function Adjustment rate: 0.5% Electrical protection function:When overloaded or short circuited, disconnect the voltage detection circuit and maintain the excitation current for 10 seconds, then restore it to approximately 1A send out The motor must be stopped (or the power switch must be cut off) in order to reset the protection function Gradient voltage recovery function:During the load input period, this function helps the unit to recover to its rated speed faster, thereby maintaining the voltage as follows Gradually increasing: If the speed drops to between 46-50Hz, the rated voltage quickly recover with a slope; if When the speed drops below 46Hz, the prime mover requires more assistance, and the voltage slowly recover to the reference value with a slope. Due to different batches, there may be differences in product appearance and printed text, which not affect use Color: black Material: Electronic components + Plastic Package Contents: 1 x AVR R438 Automatic Voltage Regulator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.