Electrical Power Systems Technology

74 Electrical Power Systems Technology

Figure 3-11. Synchroscope: (A) Schematic diagram; (B) Indicator scale

discussed, the alternator may be put “on-line” or connected in parallel
with a system that is already operational. The addition of another alter-
nator to the system will allow a higher power capacity to be produced by
the electrical power system.

GROUND-FAULT INDICATORS

Gr ound-fault indicators are used to locate faulty system or equipment
grounding conditions. The equipment of electrical power systems must
be properly grounded. Proper grounding procedures, principles, and