The world’s first on-load tap-changer which is maintenance-free up to 300,000 switching operations. Since its maintenance is not time-dependent, your transformer has much less downtime.

Fully retrofittable and 100% connection-compatible with the OILTAP® M, of which there are over 70,000 in existence. All you have to do is dismantle the old diverter switch and fit the new VM® model.

Already operates throughout the world. It’s maintenance-free up to 300,000 operations and suitable for most network applications. Thus your transformer lifecycle costs are reduced significantly.

The on-load tap-changer for the highest voltages and transformer output rates.

The on-load tap-changer allowing the widest and most comprehensive scope of applications: From transformers with medium output rates to large power transformers, process transformers subject to the highest levels of stress, special transformers.

An exceptionally compact on-load tap-changer for tapped transformers with small to medium output rates.

• Latest communication technology
• New intuitive operation, cutting-edge graphical display – ISM® Intuitive Control Interface (IICI)
• Prepared for new applications and the challenges of the future
• Maximum operational reliability and data security

The “Limit Volt” System for monitoring the regulated distance in a HV transformer. The main functions of the TAPCON® 240-LV are:

• Monitoring the regulated mains voltage (under- and overvoltage)
• Monitoring of voltage changes initiated by tap-change operations
• Monitoring the Electronic motor drive ED (under/overvoltage)

Measurement, control and regulation – the TAPCON® 230 voltage regulator provides all these functions in one device. Regardless of whether simple regulation tasks or complex requirements for a modern transformer control device, the TAPCON® 230 can be used flexibly and completes all tasks reliably. It is a real all-around worker that offers the highest level of operating convenience.

• paper filter design to clean the switching oil
• 2 pump unit designs available
• combination filter design to clean and dry the switching oil
• 2 designs for controlling the pump unit
• control integrated into separate control cabinet
• control integrated into the ED motor drive

The protective relay is designed to protect the on-load tap-changer and the transformer during a malfunction within the on-load tap-changer or the selector switch oil compartment.

TAPMOTION® ED is used exclusively for operating on-load tap-changers and off-circuit tap-changers in regulating transformers as well as for operating plunger-core earth-fault neutralizers.

• Thermometer with bellow-type technology
• Extremely durable and reliable
• No readjustment or recalibration ever needed
• Contacts individually adjustable
• Compensation of ambient temperature
• Laminated safety glass viewing glass with built-in UV filter

• Bourdon tube measuring system with no additional mechanical parts
• Extremely durable and reliable
• No readjustment or recalibration ever needed
• Quick and easy configuration of gradients via DIP switches in the ZT-F2.1 (thermal image of winding temperature)
• Automatic compensation of ambient temperature
• Laminated safety glass viewing glass with built-in UV filter

• Bourdon tube measuring system with no additional mechanical parts
• Extremely durable and reliable
• No readjustment or recalibration ever needed
• Quick and easy configuration of gradients via potentiometer (thermal image of winding temperature)
• Laminated safety glass viewing glass with built-in UV filter

• Maintenance-free
• Use of glass cylinders for optimizing the regeneration process and for excellent weather resistance
• DIN flange for optimal mounting
• Test button for performing self-tests
• Optional: Offshore model, filter heater for use in temperatures as low as -50 °C and a data logger, Protection of the electrical lines from damage (such as gnawing by animals)

• Maintenance-free
• Use of glass cylinders for optimizing the regeneration process and for excellent weather resistance
• DIN flange for optimal mounting
• Test button for performing self-tests
• Optional: Offshore model, filter heater for use in temperatures as low as -50 °C and a data logger, Protection of the electrical lines from damage (such as gnawing by animals)

• Maintenance-free
• Use of glass cylinders for optimizing the regeneration process and for excellent weather resistance
• DIN flange for optimal mounting
• Test button for performing self-tests
• Optional: Offshore version, filter heater for use in temperatures as low as -50 °C and a data logger, Protection of the electrical lines from damage (such as gnawing by animals)