You are attempting to parallel 并车two AC generators, and the synchroscope 同步指示器pointer is revolving in the fast direction. This indicates that the frequency of the incoming machine is ______.
A.
higher than the bus 汇流排frequency
B.
lower than the bus frequency
C.
the same as the bus frequency but out of phase with it
D.
the same as the bus frequency and the circuit breaker may be dosed at any pointer position