Servo Voltage Stabilizers

Air Cooled Single Phase Servo Stabilizer

Sterling Air Cooled Servo Voltage Stabilizers are available for industrial, office & domestic applications. These are designed for precise control of output voltage (typically +/- 1%) that significantly increases life of appliances and machines as well as reduces breakdowns & maintenance.

Technical Specifications:

Rating / Capacity.	1KVA -15KVA

Input Voltage Range	170-270V, 140-270V, 110V-270V ( Other ranges on request )

Input Frequency	50 Hz. + / - 6%
Output Voltage	220/230/240V
Regulation	+ / - 1% for Line & Load variation (within Input Range & Load capacity)

Indications	Mains ON
	Input Voltage Low
	Input voltage High
	Other Indications for Optionals
Metering	Voltmeter with selector switch to indicate Input / Output voltage

Optionals	MCB on Input / Output
	Output voltage high / Low cut off with Auto recovery
	Output Overload Alarm / tripping with delay
	Ammeter on Output
	By pass switch.
General Specifications
Cooling	Natural Air or Forced Ventilation or Oil Cooling (depending on rating)
Cabinet	Table Top / Free standing (depending on rating)
Ambient Temp.	0 - 45 deg. C
Relative Humidity	Max. 95% non condensing
Installation	Indoor, in well ventilated space

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Air & Oil Cooled Three Phase Servo Stabilizers

Sterling Air and Oil Cooled Servo Voltage Stabilizers, Three Phase Servo Voltage Stabilizers, Servo Stabilizers are available for industrial, office & domestic applications. These are designed for precise control of output voltage (typically +/- 1%) that significantly increases life of appliances and machines as well as reduces breakdowns & maintenance.

Technical Specifications:

Rating / Capacity	3KVA - 100KVA

Input voltage Range	300-470V, 240-470V, 190-470V (Other range on request)

Type	Unbalanced / Balanced
Input Frequency	50Hz + / - 6%
Output voltage	380/400/415V

Regulation	+ / - 1% for Line & Load variation (within Input Range & Load capacity)
Indications	Mains ON
	Input Voltage Low
	Input voltage High
	Other Indications for Optionals
Metering	Voltmeter with selector switch on all phases to indicate Input / output phase voltage

Optionals	MCB on Input / Output
	Output voltage high / low cut off with auto recovery
	Output Overload Alarm / tripping with delay
	Ammeter on output
	Single phasing Preventor with Alarm / Tripping
	Phase sequence reversal protection
	Servo By pass switch
General Specifications
Cooling	Natural Air or Forced Ventilation or Oil Cooling (depending on rating)
Cabinet	Table Top / Free standing (depending on rating)
Ambient Temp.	0 - 45 deg. C
Relative Humidity	Max. 95% non condensing
Installation	Indoor, in well ventilated space

Oil Cooled Three Phase Servo Stabilizers

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Air Cooled Three Phase Servo Stabilizers

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Electroplating Rectifier

Precision Electroplating Rectifiers are designed to provide Precisely controlled DC output for highly consistent Electroplating. The output voltage and output current (in CVC & CCC systems respectively) remain highly stabilized against AC Input Voltage variation from 170-270V and variation in job sizes. The system employs phase control technique using SCR's for control of output parameters.

Technical Specifications

A C Input Voltage	180-270V, 1Phase, 50Hz + / - 6%
DC Output voltage	6V to 100V
DC Output Current	10 to 100 A
Output Ripple (rms)	Less than 5%
Output control (Any one option to be selected)	Constant voltage control (CVC) Constant current control (CCC) User selectable CVC/CCC
Metering (Any one option to be selected)	Digital Voltmeter & Ammeter for output voltage/Current Digital meter with selector to indicate Output Voltage/Current
Metering (Any one option to be selected)
Protection	AC fuse / MCB for mains short circuit Auto resetting Electronic shut down for short circuit on output.
Optionals (Any one option to be selected)	999 min or 999 sec. Timer 999 min / 999 sec. user selectable timer Ah or milli Ah meter cum Controller
Indications	Mains ON
	System ON
	voltage Control
	Current Control
	Cycle Over / Other indications for optionals
	Cycle Over / Other indications for optionals
General Specifications
Cooling	Natural Air or Forced Ventilation (depending on rating)
Cabinet	Table Top / Free standing (depending on rating)
Ambient Temp.	0 - 45 deg. C
Relative Humidity	Max. 95% non condensing
Installation	Indoor, in well ventilated space

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Battery Chargers

We manufacture Battery Chargers of various types for different applications, such as automotive & generator batteries, power house & sub station batteries, fork lifts, golf trolleys & elevator power back-up batteries etc.

The different types of chargers that we manufacture are

Float Charger
Boost and Float Charger
Boost cum Float Charger

Technical Specifications:

AC Input	180 - 270 V, 50Hz. +/- 6%, 1 Phase
DC Output Voltage	Boost up-to 2.7V/cell +/- 1%
	Trickle at 2.25V/cell +/- 1%
DC Output Current	2A to 50A
Protections	Mains short-circuit by Fuse/ MCB
	Charger over load by Current Limiting
	Battery reverse Connection (optional)
Indications	Mains on
	Battery Charging
	Battery Charged
	12 V Mode (Optional)
	24 V Mode (Optional)
	Battery Reverse (Optional)
General Specifications
Cooling	Natural Air or Forced Ventilation (depending on rating)
Cabinet	Table Top / Free standing (depending on rating)
Ambient Temp.	0 - 45 deg. C
Relative Humidity	Max. 95% non condensing
Installation	Indoor, in well ventilated space
Cabinet	Table Top Type

Salient Features

Complete isolation between AC input & DC output.
Battery Reverse Protection (Optional).
Protection against short circuit on Charger terminals.
Constant Current Charging from 180 - 270V input and from fully discharged battery to final charging level.
Automatic change over to Constant Voltage mode after the battery voltage reaches Normal Charge level.

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Our Product Range

UPS Systems	Online UPS Systems \| Offline UPS Systems
Inverters	Sine Wave Inverter / Home UPS \| Digital Inverter \| Solar Powered Inverter Sine wave Inverter Kit
Servo Voltage Stabilizers	Air Cooled Single Phase Servo Stabilizer \| Air & Oil Cooled Three Phase Servo Stabilizers
Battery Chargers	Float Charger \| Boost and Float Charger \| Boost Cum Float Charger
Electroplating Rectifiers

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