What is the purpose of a voltmeter selector?

The purpose of a voltmeter selector is primarily to check and verify voltage on each generator phase. This device allows operators to select different phases of a multi-phase generator, enabling them to individually monitor the voltage levels across each phase. By doing so, operators can ensure that the voltage output is balanced and functioning correctly, which is critical for the stability and efficiency of the power generation system.

In systems that utilize a three-phase generator, for instance, it is vital to monitor each phase to detect any anomalies or imbalances that could lead to operational issues or equipment damage. The voltmeter selector thereby plays an essential role in maintaining the performance and safety of electrical systems.