Niyantran - 3 Phase Stabilizer

Stabilizer

STABILIZER

INTRODUCTION

In spite of best efforts by ELECTRICITY BOARD and various other factors, the supply voltage at user’s location does fluctuate much beyond the required operating limits of Electrical/ Electronics equipments. This causes malfunctioning/damage to these equipments resulting into production losses & costly repairs.

To ensure the safety against the voltage fluctuations, with wide practical experience in the field we are introduce ‘Niyantran’ the SERVO CONTROL VOLTAGE STABILIZER, to maintain the potential level constant, which will be connected to expensive & other Microprocessor based equipments.

OPERATION

Voltage Stabilizer employs a continuously variable auto transformer (variac) to feed a variable boosting/bucking voltage in the mains line through a series regulation transformer.

The output voltage of the stabilizer is sensed & compared with the reference voltage to produce a control signal for servo motor which is coupled to variac through a pair of gears.

This function is performed by an electronics control termed as control/protection unit. Any change in stabilizer output is sensed by the unit & in turn signals the motor to rotate clock or anti-clock wise, to get constant output voltage.

The control/protection unit has built in feature of under voltage protection & over voltage protection, along with electromagnetic relay to operate the circuit breaker. Trip can be reset manually after the voltage is normalized.

FEATURES

Fully Solid State controller.
Minimum over shoot, No hunting.
Fast Response time.
High or Low input voltage trip Indication (Audio & Visual indication)
Single phase prevention.
Waveform distortion same as input.
Regulation better than 2%
Manual start & Buzzer reset.
Auto/Manual mode inside the cabinate.
A unique chassis design for easy accessibility for servicing.
Surge suppressor using “MOV” , MCB for over load.

APPLICATIONS


Textile Machine	OE Spinning, Draw frame, Carding, Knitting & Embroidery Machine.
Printing Machine	Offset Colour Printing& Paper Cutting Etc.
Packaging Machines	Such as Form Fill & Seal Blister Packing.
Medical Instruments	Like CT Scan MRI, NMR CNC Machine Tools, Lathes, Drilling, Machining Centers, Edm, Wire Cut Etc. Air-conditioning-package Air Conditioners.
Stabilization of Supply to Operation Theatres, R&D Labs, Offices, Showrooms, Residence Etc.

TECHNICAL SPECIFICATIONS

Specification of 3 PHASE SERVO CONTROLLER VOLTAGE STABILIZER
CAPACITY	From 3 KVA upto 500 KVA 3Phase+N+E
TYPE OF CONNECTION	Star type suitable for unbalance Loads.
INPUT VOLTAGE	300 V to 480 V Line to Line & 345 V to 480 V Line to Line Other ranges can be Quoted on request.
OUTPUT VOLTAGE	380 V/ 415 V Line to Line 220 V/240 V Line to Neutral Other Output optional
OUTPUT VOLTAGE ADJ	+/- 10 Volts L / N
SUPPLY FREQUENCY	As Input Frequency (50 Hz)
OUTPUT REGULATION	+/- 1% Nominal output from no load to full load & from Min. to Max. line variation.
RATE OF CORRECTION	35 Volts/Sec.
RESPONSE TIME	Less than 10 milliseconds
SERVO MOTOR	High Torque AC syn motor controlled by a truly solidstate electronic controller.
OUTPUT WAVEFORM	Same as Input.
EFFECT OF P.F.	System not affected by load Power Factor.
FACILITY FOR MANUAL OPERATION	Provided by means of an Auto-Manual selector switch and Raise /Lower push button switch inside the stabilizer.
OVER LOAD CAPACITY	Can withstand motor starting overload upto 200%
EFFICIENCY	Better than 96 %
DUTY	Continuous.
TYPE OF CABINET	Free Standing Unit.
COOLING	Naturally Air cooled upto 75 KVA 3 Phase and from 75 KVA onwards Oil Cooled.
EFFECT OF SPIKES	No Spikes or surges introduced by unit.
MONITORING VOLTMETER	Digital Voltmeter with keypad type selector switch to read Line to Line as well as Line to Neutral Voltage of Input and Output.
ON/OFF SWITCH	A Pair of keypad switches connected to Airbrake Contactor will be provided for Stabilizer On/Off Operation.
PROTECTION FEATURES	Over voltage / Under voltage and single phasing Protection. Trip Levels : +/- 10-12 Volts Trip Reset : Manual Trip Status : Individual LEDs for High and Low.
SHORT CIRCUIT AND OVERLOAD PROTECTION	Is provided by an MCB at input
SURGE SUPPRESSOR	MOV are used.
SINGLE PHASING PREVENTION	Provided by means of contactor.

We Reserve the rights to modify specifications without notice. For the first time in India, new modern Technology for transformer & that too in our manufacturing set up for Aluminium Foil wound Transformer.
New improved digital Technology having digital Meter with Key Pad Arrangements. A unique chassis design for easy accessibility to servicing.