Manual Variable Auto Transformer

Name: Manual Variable Auto Transformer
Brand: PUREVOLT PRODUCTS PVT. LTD.
Price: 4000 INR
Availability: InStock

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MOQ : 1 Piece

Manual Variable Auto Transformer Specification

Cooling Type
Dry Type,Air Cooled and Oil Cooled

Product Type
Electrical Transformer

Material
Metal

Frequency (MHz)
50 Hertz (HZ)

Power Scope
Electric

Manual Variable Auto Transformer Trade Information

Minimum Order Quantity
1 Piece

Payment Terms
Letter of Credit (L/C), Cheque

Supply Ability
100 Pieces Per Week

Delivery Time
2 Week

Packaging Details
Box

Main Export Market(s)
Middle East, Africa

Main Domestic Market
All India

About Manual Variable Auto Transformer

Manual Variable Auto Transformer

Backed with high technology facilities and machines, we have been able to manufacture and export a quality range of Manual Variable Auto Transformer. Supply voltage adjustment, boosting of low lines and line voltage stabilization in automatic voltage stabilizers. We manufacture this transformer using high quality materials and components. Clients can obtain this Manual Variable Auto Transformer in different technical specifications from us. Also, we offer this transformer at cost effective prices.

Key Features:

Comes with a sturdy and easy to use knob to increase or decrease the voltage as per requirement
Effective device for step less, break less and continuous control of ac voltage
Ideal controlling device for numerous applications in laboratories and in industrial & commercial fields

Further Details:

We are a commendable manufacturer, supplier, exporter and trader of Manual Variable Auto Transformer Variac that are manufactured in both three and single phases. The general output range of the three phase is between 0 to 470 volts and in single phase it varies between 0 to 270 volt. Our engineers fabricate single or three phase enclosed type and open type Manual Variable Auto Transformer Variac for mounting purpose. Our manual transformer comes with a sturdy and easy to use knob to increase or decrease the voltage as per requirement. Moreover, we also offer high output voltage product with attributes like enclosure, motorization, ammeter and voltmeter.

Rating Available: 2 Amp to 1200 Amp
1 & 3 Phase / Air & Oil Cooled Types
(Special Input and output Voltage ranges also available on request)

Description:

Continuously Variable Voltage Auto Transformer is the most effective device for step less, break less & continuous control of AC voltage & therefore for various parameters, dependent on AC voltage.

These Variable Voltage Auto Transformers, consists of a single layer winding on a toroidal silicon-steel core. As the control knob is rotated, a carbon brush traverses the winding, tapping off a portion of the total voltage across the winding. The brush is in continuous contact with the winding. The discrete voltage increments obtained as the knob is rotated are always less than the voltage between turns. Since the brush spans more than one turn, the change in voltage is practically continuous. As output voltage is continuously variable, Variable Voltage Auto Transformers are rated in terms of current that can be drawn from the output.

The basic Continuously Variable Voltage Auto Transformers is meant for operation from a nominal input voltage of 240 V I ph AC & can give output voltage anywhere between 0 to 240 v or 0 to 270V AC by simple transformer action. Three such Variable Voltage Auto Transformers connected electrically in star and mechanically in tandem, become suitable for operation from a nominal input voltage of 415V 3Ph AC and can give output anywhere between 0 to 415V or 0 to 470V.

Rating Available: 4 Amps- 1600 Amps

Features:

Simple, rugged construction.
Coils made from high grade CRGO Silicon Steel & Pure copper.
Variable DC Output can be given using Diodes & Rectifies.
Output voltage variation is smooth, continuous, break less & linearly proportional to angular rotation.
High efficiency.
Negligible waveform & power factor distortion.
Excellent short time overload capacity.
Remote operation possible by motorization.
Wide range of current ratings.
High quality carbon brush used for current collection.

ELECTRICAL SPECIFICATIONS

MODEL	a)Flush Open Manual (Air Cooled) F
	b)Portable Enclosed Manual (Air Cooled) P
	c)In Tank Manual (Oil Cooled) T 'F' , 'P' , T suffixed by 'M' means motor operated models.
OPERATING VOLTAGE	For Single Phase 240V AC, 50-60 Hz. I- ph.
OPERATING VOLTAGE	For Three Phase 415V AC, 50-60 Hz., 3 ph 4wire.
CURRENT RATINGS	For Oil Cooled models, maximum current & continuous current are Appx. One & the same.
CURRENT RATINGS	For Air Cooled models. The power Factor is Appx. 0.8
OPERATING TEMP.	0^o- 45^oC
INSULATION RESISTANCE	Not less than 5M ohms at 500V DC.
DIELECTRIC TEST	2.5KV RMS for 1 Minute.
STORAGE TEMP.	- 9^oC to 70^oC
HUMIDITY	Upto 95% RH
CONFORMS TO	I.S. 5142.

MECHANICAL CONSTRUCTION

Single phase Variable Transformers are available in 3 types.
Potable type (P) with sheet steel enclosure for floor / table use.
Flush type (F) with open type construction. Suitable for panel mounting.
Tank type (T) immersed in oil in sheet steel tank with rollers.
Three phase Variable Transformers is usually ganged assembly of 3 coils, available in all 3 types: P,F,T.
Higher rating Continuously Variable Voltage Auto Transformers (above 200 Amps) use 2/3/4/5/6 or more coils in parallel with load balancing arrangements.
Tank type (T) immersed in oil in sheet steel tank with rollers.
Motorized Variable Transformers uses 240V AC Step-Syn Motor having 60 rpm speed at 50Hz. With proper gearing higher torque at lower speed can be achieved. Standard gear ratios used provide sweep time of 8, 15, 30, 45, 60, 120secs.

Versatile Performance Across Industries

Our Manual Variable Auto Transformer is engineered to suit a broad spectrum of sectors, from manufacturing to research facilities. Its design accommodates various operating environments and voltage needs, making it an invaluable asset for reliable electric power modulation. The range of cooling options further boosts longevity and performance, even under demanding conditions.

Dedicated Support from Start to Finish

We deliver comprehensive support throughout the entire process, from selecting the right transformer variant to installation and after-sales service. As a multi-role provider in India, our team assists with technical guidance, troubleshooting, and routine maintenance, ensuring optimal efficiency and satisfaction at every stage.

FAQ's of Manual Variable Auto Transformer:

Q: How does a Manual Variable Auto Transformer work?

A: A Manual Variable Auto Transformer adjusts output voltage by manually varying the contact point on a single winding, enabling precise control of electric power supplied to devices. This flexibility makes it suitable for applications requiring variable voltage.

Q: What are the advantages of choosing an air cooled or oil cooled Manual Variable Auto Transformer?

A: Air cooled transformers are ideal for installations with limited maintenance, while oil cooled variants offer enhanced heat dissipation for high-power applications. The choice depends on the operational environment and cooling needs.

Q: When should I use a Manual Variable Auto Transformer in my electrical setup?

A: You should use a Manual Variable Auto Transformer when you require adjustable voltage control for testing, calibration, or sensitive equipment. It's especially beneficial in scenarios where precise voltage regulation is essential.

Q: Where can these transformers be installed?

A: These transformers can be installed in laboratories, manufacturing units, test benches, and commercial facilities across India. Proper ventilation and secure placement are necessary to ensure optimal performance and safety.

Q: What is the process for selecting the correct cooling type?

A: Selecting the appropriate cooling type involves assessing your power capacity, ambient temperature, and application. Our technical team can help you decide between air cooled, dry type, or oil cooled options for the best results.

Q: How can I benefit from sourcing transformers from your company?

A: As a reliable manufacturer, distributor, and service provider in India, we offer not just high-quality products but also comprehensive after-sales support, technical consultation, and prompt delivery, ensuring a seamless buying experience.

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