A synchroscope is used for better accuracy of synchronization and it consists of two pairs of terminals. ... After the voltage condition is checked, the operator has to check the synchroscope. The rate at which the pointer rotates indicates the difference of frequency between the incoming alternator and the bus bar.

What are the conditions to be satisfied for proper synchronizing of alternators?

For proper synchronization of alternator, the following conditions must be fulfilled: The terminal voltage of the incoming alternator must be equal to that of the bus bars voltage. The speed of the incoming alternator must be such that its frequency is equal to that of bus bars.

What is the purpose of a synchroscope?

In AC electrical power systems, a synchroscope is a device that indicates the degree to which two systems (generators or power networks) are synchronized with each other.