• Used in up to 765 kV Transformers
• Three-pole design for neutral application at 350A, 500A and 600A rating for three-phase wye-connected windings
• Single-pole design at 350A, 500A, 600A, 800A, 1200A, 1500A, 1800A, 2100A and 2400A ratings for auto connected windings or single-phase transformers
• Available with ±9, ±11, ±13, ±15, ±17 steps
• Special design available with 700 A, 3 Phase and 2100 and 2400 A, Single Phase
• Available on both star and delta-insulation to ground, and tap selector size can be selected independently of one another
• Convenient for bell-type tank installations
• Additional device for potential tie-in of tap winding, during change-over operation of the change-over selector
• High-speed transition resistor-type diverter switch with arc extinction at first current zero.
• Diverter switch uses sharp-action mechanics by energy accumulator mounted directly on diverter switch.
• Minimum possible tap selector dimension because four avilable sizes ensure matched inpulse voltage withstandability.
• Radial dimensions of the tap selector are reduced by special shaping of all parts on high potential. Distances between tap selector bars determined by actual voltage stress.
• Optimised integration of the change-over selector into the fine selector contact circle.
• Long life and reduced maintenance - rapid tap change operation. Low thermal stress on the transition resistors.
• Special contacts for alternative oil application.
• Simple tap selector design, effective contact cooling, high short-circuit withstandability.

• Type ‘D’ Model is a true testimony of Easun-MR’s time tested credentials for superior tap changer technology. This model is in successful service since 1975 catering to normal network applications and to demanding heavy duty furnace applications.
• Current rating up to 500 A with 3-pole & up to 1500 A with 1 pole.
• Linear version applicable up to 18 position.
• Special design is available for 300 A.
• Voltage class up to 220 kV Class.
• Both star and delta applications are available.
• Maximum step voltage up to 2500 Volts.
• Separate diverter and selector model.
• Bi-directional power flow.
• Up to 35 positions available for pre-selector arrangements.
• Over 1500 in-tank installation in ultra heavy duty applications which involve 500 operations per day.

V TYPE

COMPACT & ECONOMICAL

Current rating up to 500 A & Voltage up to 132 kV (Y/D).

Special designs are avilable for 250 and 400 A on request.

Both star and delta applications are available.

Step voltage is 1500 Volts.

In-built selector switch model.

Bi-directional power flow.

Very compact dimensional arrangement.

Easy removal of diverter switch inserts, making it maintenance friendly.

Linear version is avilable up to 14 positions.

Up to 27 positions are avilable with the pre-selector arrangement.

No barrier board problems.

OCTC

High speed snap action design.

Design occording IEC 60214-1.

Single and three phase Off-Circuit tap-changers for up to 4000 A rated through-current.

Rated insulation on level up to Vm=300kV is possible.

Higher values possible as special design.

High safty is ensured with special switching.

Compact, most roubst and state-of-the art design.

Modular concept, which allows to manufacture as per the required specification.

Optimized field design through smooth surface, soft edges and use of innovative materials.

Possible driveType: - Manual drive - Motor drive

Hands on Wheel

Easy Installation in the transformers