BASLER AVC63-12A1 automatic voltage regulator

The Basler AVC63-12A1 is a solid-state, automatic voltage regulator (AVR) designed for brushless synchronous generators. It regulates generator output voltage by sensing the voltage, converting it to a DC signal, and comparing it to a reference. The AVC63-12A1 features single- or three-phase sensing, frequency compensation with selectable slope, inverse-time overexcitation shutdown, voltage buildup from residual, and an accessory input for compatibility with var/power factor controllers or excitation limiters. It is ideal for industrial generator sets requiring reliable and precise voltage regulation.

Q: Does the AVC63-12A1 require an external power source to build voltage?

A: No. It builds voltage automatically from residual generator voltage as low as 6 Vac. If residual is insufficient, field flashing can be applied.

Q: Can I use a remote voltage adjustment?

A: Yes. Remove the jumper between terminals 4 and 7, connect a 10 kΩ potentiometer across terminals 6a and 7, and set the front panel VLT ADJ fully clockwise.

Q: What should I do if the generator voltage does not build up?

A: First, flash the field (with generator at rest) using ≤24 Vdc with a current-limiting resistor. Then remove power for one minute to reset the overexcitation circuit.