OPERATION & MAINTENANCE OF SERVO VOLTAGE STABILIZER

Voltage stabilizers are manufactured to exacting quality standards, however,in the unlikely Event there may be some problems, therefore proper operation & maintenance could be enhanced the life span of servo voltage stabilizer, with regular and periodical maintenance schedule we are  able to get reliable output as well as better efficiency of equipment. Here we are giving fault diagnostic chart which could be useful in diagnoses the fault in servo voltage stabilizer so that we can take necessary corrective and preventive measures.

Sr. No	Symptom	Probable Causes	Remedial Action
1	SVS not working in AUTO Mode	1.Servo Card Malfunctioning	Replace Servo Card
		2.T Type Transformer Malfunctioning	Replace Transformer
2	SVS not working in MANUAL Mode	1.Carbon Brush Broken/Setting Disturb	Replace/Adjust Carbon Brush
		2.Gear Broken/Setting Disturb	Replace/Adjust Gear
		3.R-C Set Defective	Replace
		4.Fuse Open	Change Fuse
3	Abnormal Temp. Meter Reading	1.Inverted Connection/Faulty	Interchange Connection/Replace
		2.Fault in Sensor	Replace Sensor
4	Input/ Output Voltage not Being Display	1.Open Fuse	Replace fuse
		2.Push V-in Button Faulty	Setting
		3.Voltmeter Defective	Replace Card
		4.24-Pin Connector Loose	Tighten the Connector
5	Output Voltage Unbalanced	1.Pot Setting Disturbed	Setting
		2.Neutral Disconnected	Check the Neutral
		3.Input Voltage Out of Range	Check Input Voltage
6	Tripping Frequently	1.Input Voltage Out of Range	Check Input Voltage
		2.Loose Connection on MCCB	Tighten the Connection
		3.MCCB Defective	Replace
		4.SVS  Overload	Reduce Loading as per Capacity
		5.Neutral is not Proper	Check the Neutral
7	Abnormal Noise	1.Gear Broken	Replace the Gear
		2.Carbon Brush Defective	Check Carbon Brush for Adjustment or Replacement.
		3.Motor is Continuously ON	Adjust/Replace Limit Switch
8	Humming Noise	1.Overloading	Reduce Loading as per Capacity
		2.Input Voltage Out of Range	Check Input Voltage
		3.Loose Neutral	Check the Neutral/Phase Connection

RECOMMENDED MAINTENANCE SCHEDULE:

Here we are showing some tips for maintenance for servo voltage stabilizer which will be useful in enhance the life span as well as also improve the efficiency of equipment.

S. No.	Inspection Frequency	Items to be inspected	Inspection Notes	Action reqd. if inspection shows unsatisfactory conditions
1	Monthly	i.  Oil level in SVS ii.  Connections	Check Oil level Check tightness	If low, top up with dry oil.  Examine SVS for leaks If loose, tighten
2	Quarterly	i. Terminals	Examine for cracks and dirt deposits.	Clean or replace
3	Half-yearly	Gasketted Joints, Gauges and general paint work	Check of moisture under cover inspects.	Improve ventilation, check oil.
4	Yearly	i.  Oil in SVS ii. Megger Value	Check for dielectric Strength More than 10Mohm	Take suitable action to restore quality of oil.If value is less than 10Mohm,

In case any enquiry free feel to contact us at info@saielectricals.com or visit our website www.saielectricals.com