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Isolation Transformer

Isolation Transformers have primary and secondary windings that are physically separated from each other. Sometimes isolation transformers are referred to as “insulated”. 
This is because the windings are insulated from each other. In an isolation transformer the output winding will be isolated, or floating from earth ground unless bonded at the time of installation. Secondary neutral to ground bonding virtually eliminates common mode noise, providing an isolated neutral-ground reference for sensitive equipment and an inexpensive alternative to the installation of dedicated circuits and site electrical upgrades.

An isolation transformer allows an AC signal or power to be taken from one device and fed into another without electrically connecting the two circuits. Isolation transformers block transmission of DC signals from one circuit to the other, but allow AC signals to pass. They also block interference caused by ground loops. Isolation transformers with electrostatic shields are used for power supplies for sensitive equipment such as computers or laboratory instruments. Isolation transformers are different from auto transformers in which the primary and secondary share a common winding.

 

Technical Specifications

Phase

Single Phase

Input Voltage

220 Volts

Input Voltage

220 Volts

Transformer Ratio

1:1

Power Factor

0.75 Lag to lead

Frequency

50 Hz

VI Electric strength

1500 V AC for 120 sec.

Insulation esistance

More Than 100M Ohms.

Capacitance Coupling

0.01 PF 100 db

Common Mode attenuation

100 db

Class Of Insulation

Class ‘F’

Losses

5%

Ambient Temperature

0-50o C

Duty Cycle

Continuous

Lamination

Cargo

Construction

as per IS :2026

Ultra Isolation Transformer Specifications

Phase

Three Phase

Input voltage

415 Volts

Output Voltage

415 Volts

Systems Construction

Delta / Star

Transformer Ratio

1:1

Regulation

Better Than 4%

Power Factor

0.75 Log to lead

Frequency

50 Hz

VI Electric strength

2500 V AC for 120 sec.

Insulation Resistance

More Than 1000M Ohms.

Capacitance Coupling

0.01 PF 100 db

Common Mode attenuation

100 db

Class Of Insulation

Class ‘F’