Mario Leitgeb

Mario Leitgeb




Mario Leitgeb is the Head of Customer Service for the Siemens Transformer Business from Siemens AG Austria. Before he joined Siemens in 2010, he earned a master’s degree in Mechanical Engineering and Economics from the University of Technology in Graz.  Prior to his current position, Mr. Leitgeb worked first as Sales afterwards as Over-All Project Manager for Siemens Transformers with responsibility for the acquisition and execution of various large power transformer and shunt/series reactor projects worldwide. In his current role as Head of Customer Service, Mr. Leitgeb sets the strategic direction for the Transformer Service and Monitoring Business out of the transformer plant Weiz in Austria. 


Bullet-Resistant Concept for Improved Physical Security of Transformers


Transformers are complex assets that are designed to withstand many operational risks. Due to their significance in the power network, transformers are designed to strict national or industry standards, manufacturer’s guidelines and customer specifications. One aspect, however, which was not well covered in the past, is the vulnerability of transformers to intentional human assaults.  Over the years has the risk of damage to critical transformers in the power network, or even catastrophic failures, due to intentional attacks with firearms increased. As a consequence, the NERC CIP-014-2 – Physical Security requirements were brought into effect on October 2015, with US utilities being asked to conduct a risk assessment of Transmission assets and thereby take appropriate actions to protect their assets from the risk of a physical attack.

To mitigate the risks of an attack several conventional options, such as concrete walls and ballistic barriers are available. However, as opposed to the conventional options, Siemens has implemented an innovative concept called Pretact® that can easily be retrofitted onto the transformers and does not require any additional civil works. The significant features of the solution offered by Siemens included bullet resistance up to ballistics standard UL 752 level 10, representing the maximum likely threat posed by a firearm attack. The design has also been optimized such that there is negligible impact on the cooling system, with the fans and radiations receiving the same airflow as the original design values. In addition, the solution features sound reduction measures, which have decreased sound pressure level of a customer transformer by 20 dB(A). This is significantly more than a standard sound wall design and is comparable with a sound enclosure. “