Synchroscope
50, 60 Hz
CIRCUTOR
Class 1.5
50 and 60 Hz
For single phase and three phase circuits
For indicating the frequency and phase angle difference between two generators or system and generator, when the are connected in parallel. If the difference is zero, the instrument's pointer remains on the synchronisation mark located in the middle of the scale. The scale of the instrument is divided into two areas marked with the signs ( + ) and ( - ). These signs indicate if the machine to be connected has a higher or lower frequency than the other respectively. The setting is carried out until the pointer is on the ( - ) side, but slowly turning in the ( + ) direction. If the pointer stops outside the synchronisation mark, both machines are at the same frequency but the voltages are not in phase.
The instrument's pointer begins to turn in the right direction when the frequency difference is 1.5 Hz for three phase or 0.5 Hz for single phase.
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