COMMERCIAL FEATURE Voltage regulator for transformers with on-load tap-changers F or more than 40 years, voltage regulators from Maschinenfabrik Reinhausen (MR) have stood for uncompromising reliability. This is one of the reasons why MR is the market leader in the voltage regulation sector for transformers with on-load tap-changers. MR has concentrated its extensive experience in the latest Tapcon generation, which offers the greatest flexibility with regard to current and future requirements. In addition to simple regulation tasks for transformers, the Tapcon also supports complex special applications such as three-winding transformers, transformer banks, phase shifters or shunt reactors. The modular system makes it possible to precisely match the regulator’s power spectrum to the respective requirements. Volatile power generators are typical in modern power supply and they reveal new challenges in transformer station automation. ISM technology is the new standard hardware and software basis being used for all MR automation solutions, including the new Tapcon voltage regulator. The hardware components and the universal software architecture are distinguished by their user-friendliness and flexibility. The system is designed to meet the special requirements of energy technology with regard to reliability, robustness and durability. ISM technology is also open and flexible, The new Tapcon voltage regulator from MR offers precisely the required functional scope. Complex regulating tasks can also be realised upon request. State of the art hardware, easy handling and maximum flexibility. thus supporting both the use of standard products as well as the implementation of individual requirements in transformer station automation. Regardless of the application, users benefit from standardised components, tools and operating interfaces. Another advantage is its modular and high- performance hardware design which enables various installation variants, such as 19” and cap rail. A robust operating system forms the basis for all system and application functions. All necessary control system protocols are available in client or server functionality, making several transmission media possible. This means, for example, that the voltage regulator can both provide data as well as receive data from subordinate systems (sensors), resulting in more information and considerably less wiring effort. The novel and innovative ISM intuitive control interface (IICI) operating concept ensures simple commissioning and operation. The fully graphic 5.7” colour display and dial control enable intuitive user prompting. With Tapcon, data are secure from unauthorised use at all times due to integrated user authorisation and the role-based password concept. Visualisation and data upload and download are done using proven SSL encoding with security certificates. In addition to the global network of certified premium service providers, support services are also offered which include commissioning and product training as well as technical training in training centres specifically equipped for this purpose. Specialists from MR are also available to provide extensive consultation services, such as system certification, factory/site acceptance tests and system modernisation. ESI All operating modes and voltage regulator statuses are clearly displayed on new information screens. 80 ESI AFRICA ISSUE 1 2014