Comparison of AC Voltage Stabilizers
|
Sr. |
Parameter |
Relay |
Solid |
Servo |
|
1. |
Principle |
Relay contract select tap on transformer |
SCR static switches selected transformer tap |
Servomotor rotates the autotransformer |
|
2. |
Use of moving parts |
Relay |
No moving parts |
AC servomotor autotransformer |
|
3. |
Maintenance |
Frequent |
Less frequency |
Frequency |
|
4. |
Speed |
Moderate |
Very fast |
Slow |
|
5. |
Phase control |
Not possible |
Possible |
Not possible |
|
6. |
Cost |
Cheap |
Moderately expensive |
Expensive |
|
7. |
Application |
TV. Refrigerator |
TV. Refrigerator |
Computers |
|
8. |
Adjustment in voltage |
In steps |
Smooth, stepless |
Stepless |