Span Power Systems Pvt. Ltd supplies Auto /Manual Operated Servo Voltage Stabilizer. Span Power Systems Pvt. Ltd is an ISO 9001:2000 accredited company. Span Power Systems Pvt. Ltd offers wide ranges of inverter, offline online UPS, servo stabilizer [Domestic and industrial] CVT, DPC etc. Auto /Manual Operated Servo Voltage Stabilizer are suited for industrial, office and domestic applications. Auto /Manual Operated Servo Voltage Stabilizer offer both balanced type / unbalanced type operating option. Auto /Manual Operated Servo Voltage Stabilizer is available with over / under voltage protections.