10. MEASURING PROCEDURES
10-l METERS
10-1-l VOLTMETERS
Both AC and DC voltmeters are nesessar! .
The approximate AC voltage ranges of the voltmeters to be used for various types of generators are as follows:
0 to 1SOV: Type with an output voltage of 110 or 12ov
0 to 300V: Type with an output voltage of 220.230 or 21OV
10-l-2 AMMETER
Both AC and DC ammeters are necessary.
The AC ammeter must have a scale range from 0 to ap- proximately 10A.
The DC ammeter must have a scale range from 0 to ap- proximately 15A.
AC VOLTMETER | DC VOLTMETER |
Fig.
AC AMMETER | DC AMMETER |
Fig.
10-l-3 FREQUENCY METER
The frequency meter must have a scale range from 45 to ap- proximately 65 Hz.
NOTE: Note the range of input voltage of the frequency
meter.
Fig.
