The life of a tap changer involves a lot of extremes: overloads and overvoltages, fluctuations in the network, and many thousands of switching operations are all par for the course. The demands on the tap changer are huge, particularly in industrial applications such as electric arc transformers, but also in shunt reactors, phase shifters, HVDC transformers, and even in classic network operation. With its vacuum technology, the VACUTAP® VR is specifically designed for extreme operating conditions such as these.
“We have increased the power for the new generation. With a step capacity of 6,000 kVA, the VACUTAP® VR is the most powerful vacuum on-load tap-changer around and is therefore suitable for applications in the extra-high-voltage range,” says Portfolio Manager Silke Schwarzwälder. The engineers have thought about the future in other ways as well: By completely redesigning the selector range, they have been able to increase the tap-changing capacity of the change-over selector significantly and provide higher operating and testing voltages. “We have designed the modular potential connection concept so as to provide transformer manufacturers with planning certainty when designing and constructing the tanks—regardless of whether or not this function is required,” explains Schwarzwälder. The VACUTAP® VR is also suitable for alternative insulation fluids.
“All of our expertise has gone into the new generation.” Silke Schwarzwälder
Cost-effectiveness was also a top priority for the new generation: 300,000 tap-change operations can be carried out without maintenance and the diverter switch insert only needs to be replaced after 1.2 million operations. For applications with high numbers of tap-change operations, the Interrupter Exchange Module reduces production breaks due to maintenance. “All of the expertise that we’ve accumulated over the last 25 years in the field of vacuum technology has gone into the new generation,” says Schwarzwälder.
With a step capacity of 6,000 kVA, the VACUTAP® VR is the most powerful vacuum on-load tap-changer around and is therefore suitable for applications in the extra-high-voltage range.
FIT FOR THE FUTURE
The VACUTAP® VR is FIT FOR THE FUTURE. The completely redesigned selector range increases the tap-changing capacity of the change-over selector significantly and enables higher operating and testing voltages. Furthermore, the tap changer is also designed for alternative insulation liquids.
MAXIMUM OPERATIONAL RELIABILITY
The reliable quenching of the switching arc and protection against overvoltages provided by the VACUTAP® Advanced Arc Control System and VACUTAP® Step Protection System® ensure MAXIMUM OPERATIONAL RELIABILITY.
COST-EFFECTIVE AND DURABLE
With 300,000 tap-change operations without maintenance, it is extremely COST-EFFECTIVE AND DURABLE. The diverter switch insert can be used for 1.2 million tap changes before needing replacement.