Basler Electric MVC 108 – Manual Voltage Controller for Generators

The Basler Electric MVC 108 (part number 9037000102) is a compact, panel‑mount manual voltage control unit designed to provide remote adjustment of a generator’s output voltage. It interfaces directly with compatible Basler voltage regulators, allowing operators to fine‑tune the terminal voltage setpoint from a convenient location without accessing the regulator itself.

Design and Functionality

The MVC 108 consists of a high‑quality potentiometer with a calibrated dial, a built‑in analog voltmeter displaying the generator voltage, and a selector switch for local/remote operation. The unit is passive and failsafe, meaning that a loss of connection will not cause the regulator to drift. It is powered by the regulator’s auxiliary supply and outputs a variable resistance or voltage signal proportional to the desired setpoint.

• Power supply: derived from regulator (120 V AC or 24 V DC)

• Output signal: 0–10 V DC or 0–500 Ω (model dependent)

• Adjustment range: 90–110% of nominal voltage

• Meter: analog, accuracy ±2% of full scale

• Enclosure: flush‑mount, IP54 front protection

• Dimensions: 72 x 72 mm (DIN standard)

• Connections: screw terminals for potentiometer and meter

• Operating temperature: –10 °C to +55 °C

Typical Applications

The MVC 108 is widely used in generator switchgear, control rooms, and operator desks. It works with Basler SSR, SR, and DECS regulators that support a remote setpoint input. In paralleling applications, it enables operators to match generator voltage to bus conditions before synchronising.

Installation and Wiring

Mounting is via a standard square cutout with four retaining screws. Wiring is simple: three terminals for the potentiometer signal and two for the meter. The unit is pre‑calibrated and requires no field adjustment.

Durability and Reliability

Built with a conductive‑plastic potentiometer for long life and smooth operation, the MVC 108 is designed for continuous service in industrial environments. Basler’s quality assurance ensures reliable performance over many years.

In summary, the Basler Electric MVC 108 manual voltage control offers a straightforward, effective means of remote generator voltage adjustment, enhancing operational flexibility while maintaining simplicity and reliability.