400 Hz technology in aviation

400 Hz AC / 28.5 V DC maintenance and servicing

A 400 Hz ground power supply, compliant with the international DFS 400 standard, play a crucial role in providing flexible and secure electrical power to aircraft on the ground. These complex technical systems, along with their necessary cables, can only fulfil their purpose and ensure a safe operation when they are in perfect working condition - and this is where SPIE steps in. Our comprehensive service portfolio includes both 400 Hz AC technology and all 28.5 V DC systems utilized in aviation. With our highly skilled team and our highly equipped mobile load truck, we take reliable responsibility for maintaining and servicing your systems - our extensive experience is rooted in first class reference projects.

400 Hz technology in aviation - copyright SPIE

expertise

Qualified maintenance and servicing

400 Hz technology in aviation represents a specialized field within electrical engineering. Ensuring the successful and safe maintenance of 400 Hz components (including static and dynamic converters, as well as all outgoing lines) requires the expertise of qualified and experienced service technicians. Regular load tests and assessments of switch-off values are essential to maintain power quality within the 400 Hz range. This involves verifying compliance with guide values derived from the DFS 400 standard and adhering to specific manufacturer specifications regarding overload operation and switch-off behaviour.

At SPIE, we blend advanced technical expertise with a structured knowledge transfer and provide the service on site with our patented load truck. Prior to any assignment, our employees undergo training by experienced and qualified technicians, specifically focusing on the complexity of 400 Hz technology.

Kevin Cerek, Service Technician and Project Manager in the field of “Energy Supply & Control Technology” at SPIE Deutschland & Zentraleuropa

Efficient maintenance includes:

Visual inspection by trained personnel
trennlinie Pull-out force measurement of the contacts
Testing of the disconnection values
Recording of various load jumpsInsulation test of the cablesThermography and load test of the cables

smart solution

ohmic and inductive load testing

SPIE has developed an efficient and intelligent solution for conducting inductive load tests on the 400 Hz ground power supply. Our innovative and patented mobile testing device not only performs the standardized ohmic load test, but also simulates the inductive load of the systems - ensuring consistent quality and high reliability! It replicates various load levels, models overvoltage and undervoltage behaviour, detects cable breaks through thermographic conditions, and measures power consumption and transmission.

OUR MOBILE TESTING DEVICE GUARANTEES A STANDARDISED MEASURING ENVIRONMENT WITH HIGHLY REPRODUCIBLE MEASUREMENT RESULTS AND EXCEPTIONAL MEASUREMENT RELIABILITY. ERRORS CAN BE RECOGNISED AT AN EARLY STAGE AND CONSEQUENTIAL DAMAGE WILL BE AVOIDED.

advantages

High quality and reliability

When you engage SPIE, you’re not just hiring a service provider to deliver the services you’ve specified. We go beyond that, offering tailored solutions and delivering high-quality results that provide additional value from our collaborative projects. Allow our expertise to convince you!

Maintenance & repair by highly skilled and trained SPIE employees

Complete fulfilment of the DFS 400 specification

Customised maintenance intervals

Alignment with your operating workflow

Enhanced operational safety

Reliable risk Mitigation

High legal compliance

Flexibility and mobility

contact

We are here for you

Looking for a strong partner to stand by your side and keen to learn more about our maintenance solutions for 400-Hz components? We’re more than happy to assist you personally! We’re eager to get started on your project!

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ABOUT SPIE

SPIE is a company of many facets. Our broad spectrum of technical services in buildings, plants and infrastructures is what makes us special as a multi-technology service provider. This diversity might not be simple to explain, but it can be quickly summarised as follows: We're a strong team shaping the future together!