Volmatic Stabilizer

SOLUTION FOR VOLTAGE FLUCTUATION

VOLMATIC Voltage Stabilizer Series, is a voltage regulator that due to its construction simplicity, reliability and robustness has been  able to last the passage of the years. The latest technical improvements,  both electrical as well as mechanical have been incorporated in this new digital generation.

THE  PROBLEM

A classic dilemma out of utility companies control is extension of power line, load variations and  urge demand of consumers lead to important of load fluctuations, hence transformed into continuous voltage variation. Fluctuations voltage can cause serious problem to automatic machines i.e. defective end product, inaccurate positioning (radar system), blur images, irregular functions, unpredictable readings, incorrect motor speed,etc.

VOLMATIC, power engineering systems offers the new digital generation of its VT series AC servo-motor Voltage Stabilizer to continuously provide strict regulated voltage for protection of all electric and electronic equipment’s. Due to its construction’s simplicity (one variable transformer, one booster transformer(*)  and one electronic control), reliability and efficiency are two of its best features, offering a stability and profittability difficult to achieve without the protection of a VOLMATIC VT Series AC servo-motor Voltage Stabilizer. Interconnected between the mains and load assures a correct performance, reduces maintenance costs and improves production.

Downtime of an equipment or malfunction of a production plant, even if for a few hours my represent higher costs than the price itself of the VOLMATIC VT Series Voltage Stabilizer. VOLMATIC ensures you that, in the shortest term installations of our system will bring you immediate benefits in increasing productivity, profitability and reliability.

THE SOLUTION

The VT Series AC Servo-motor Voltage Stabilizer employs a motor driven variable transformer feeding the primary winding, to a booster transformer(*). Its secondary is connected in series between the supply and the load in order to add or subtract the necessary voltage into the supply line. The solid state Electronic Circuit detector consisting of a differential amplifier continuously monitoring the output voltage, compares it with a fixed reference and the difference is amplified and converted into frequency proportional to the voltage applied to the step motor drive of the variable transformer.

If the stabilized output voltage fluctuates from the set value due to either supply voltage variations or change in the load current, the electronic control energizes the servo system to rotate the variable transformer brush gear until the correct voltage is restored. This method of stabilizations produces no interference or harmonics and, subsequently, doesn’t reflect distortions into the incoming mains supply. The action of the servo drive system is extremely fast and by the use controlled decelerations we have almost elimated overshoot. VOLMATIC is consent that a voltage stabilizer has to solve problems, not to create new ones.

FEATURES

• Robust construction, admitting over-loads up to 1000 % the nominal.
• High output voltage accuracy and stability > 1 % for static or dynamic load variations.
• Fast speed response.
• High efficiency > 98 %, which means less maintenance cost.
• High reliability.
• No distortion.
• Electronic control without electromechanical elements.
• Three phase equipment with Star or Delta connections.
• Visualization of main parameters of the stabilizer.

Input		Domestic	Export
Voltage (**)	Single Phase	220 or 110 V	120, 220, 230, or 240V
	Three Phase	380 or 220 V	208, 220, 230, 240
			380, 400, 415 V
Input regulation	single phase	160 – 240 V	±10%, ±15%, or ± 20%
		50 – 130 V
	Three Phase	278 – 415 V
		160 – 240 V	(others on demand)
Frequency		45 – 60 Hz	45 – 60 Hz
Power factor		0.98 %	0.98 %

Output		Domestic	Export
Voltage (**)	Single Phase	220 or 110 V	120, 220, 230, or 240V
	Three Phase	380 or 220 V	208, 220, 230, 240
			380, 400, 415 V

Item	Feature
Accuracy	adjustable 1 %, 2 %, 3 %, 4 %
Output voltage adjustment	± 5 %
Nominal power range	2 KVA to 1000 KVA.
Harmonic distortion	NIL.
Efficiency	0,95-0,98 depending of power range.
Overload	200 % for 2 min. 500 % for 10 sec.
	1000 % for 10 m/sec.
Operating temperature	-100C to + 450C.
Temperature rise	Less than 750C.
Relative humidity	0 to 95 % non condensing
Operating elevation	Sea level to 2400 m.
Audible noise at 1 m	< 35 dB
Ventilation	Natural or forced air, depending of power.
Control system	AC Servo Motor.
Response time	Within 1 sec. against 10% input
Power Factor	0,5 lagging to 0,7 leading

DISPLAY INDICATIONS

• Generals : On, Output, Fault, Out of range, Manual, Automatic, Increase (up), Decrease (down), by-pass (optional), Out of service (optional).
• Audible : Mechanical blocking of the motor variable contact assembly.
• Measures : Digital visualization of the output voltage.

 

APPLICATIONS

• Transmissions and.
• Telecommunications.
• Radar system in naval or air navigation.
• Process controls.
• Computer and EDP equipment’s.
• C N C machines.
• Photography controls and processes.
• Laboratory equipment’s
• Test equipment’s
• Electric furnaces.
• Welding equipment’s.
• Lighting.
• House hold appliances.

 

ASSEMBLING POSSIBILITIES

• Single phase.
• Three phase.
• Three phase eigth independent  phase regulation.
• Single phase with isolation transformer (line conditioner).
• Three phase with isolation transformer (line conditioner).
• Three phase with isolation transformer and independent phase  regulation (line conditioner).

 

OPTIONAL

• High / Low voltage protection.
• Protections against lighting.
• Output circuit breaker protections.
• Overload relay.
• Maintenance bypass.
• CONTROLS
• ON / OFF circuit breaker.
• Automatic-Manual selector switch.
• UP push button ( increase of output voltage ).
• Down push button ( decrease of output voltage ).
• Output Voltage adjust switch ( up to ± 5 % ).
• Voltmeter phase selector switch ( only in three phase equipment’s ).
• Start up of the HI/LOW voltage protection ( optional ).