German Military Camp Prime Power Integration
Bagram Airfield (BAF), Afghanistan
Federal Republic of Germany
Client Needs and Requirements:
This was a design-build project that required ISI to provide prime power from the Bagram Airfield (BAF) utility grid infrastructure at 13.8kV to a new German Military campus facility. The 13.8kV 60Hz power had to be transformed and converted to 400V 50Hz for use with the European voltage equipment used by the German Miltary. In addition a 400V 50Hz stand-by generator was also integrated into the system to provide emergency stand-by power for critical systems.
Challenges and ISI’s Response:
The initial site visit was made prior to tenant construction so ISI had to survey the area and understand client needs to propose a solution and properly size electrical equipment. To convert voltage from a 60Hz to a 50Hz system, ISI proposed the installation of four frequency converters that were fed from four 15kV overhead circuits. These frequency generators supported critical and sensitive equipment in these facilities, so ISI had to field modify the units for shunt trip capabilities (to avoid undervoltage power discharges while winding down) and additional grounding to properly protect the client’s sensitive equipment/infrastructure.
This project had a short period of performance, which was difficult to achieve. Not only was the project in a remote location in Afghanistan, but it had long-lead equipment that had to be released for manufacturing soon after the notice to proceed was issued. The submittals process was expedited, and field complexities were realized and resolved to meet the client’s power requirements and deadlines.
The project was successfully commissioned on time while meeting all of the client’s expectations.