ohv diagnostic
Our experts for your secure, high-availability assets
Condition assessment and diagnosis
Commissioning test of cable routes
Commissioning and diagnosis of switchgear transformers
Online monitoring
The design and condition assessment of power cables, switchgear and transformers - especially in the field of medium and high-voltage technology - requires a high level of basic knowledge in order to understand the processes and interpret the measured values.
Thanks to our many years of expertise in the field of electrical equipment diagnostics, we can offer you a package of services tailor-made to your needs.
Commissioning, condition assessment and diagnosis of cable routes
DAC cable tests are the advanced analysis and diagnostic concept. They make it possible to assess the cable insulation condition of newly installed, repaired or operational cable systems and thus support the cable operator's asset management.
The DAC voltage test and PD analysis enables the reliable detection of:
▪ Defects in the cable insulation due to installation or routing,
▪ Defects in the cable fittings, i.e. joints and terminations and
▪ Damage to the cable insulation due to ageing processes
ohv Oscillating Wave Test Systems are compact, lightweight, programmable cable test systems with withstand voltage testing, PD analysis and PD localization for testing and diagnosing medium and high voltage transmission cables. The ohv Suite, the innovative software platform for the entire range of ohv diagnostic products, provides user-friendly control, measurement and result display.
Commissioning, condition assessment and diagnosis of switchgear and transformers
Switchgear and transformers can be checked for impermissible partial discharge levels at regular intervals using partial discharge measuring devices or permanently monitored using monitoring systems. ohv supplies and installs these monitoring systems including the necessary sensors via local partners worldwide and supports you in evaluating the measurement results obtained. Freely programmable alarm functions and an optional expert system enable the user to easily identify critical conditions and thus optimize condition-based maintenance. All ohv measuring systems and monitoring systems can be maintained remotely. Thanks to their update capability, ohv partial discharge measuring and monitoring systems are characterized by a long service life.
Calibration of partial discharge measurement technology
We offer calibration services for partial discharge detectors and calibrators in accordance with the prescribed suitability test. You will receive a detailed calibration certificate as proof of the characteristic values achieved. Incidentally, our partial discharge measurement technology complies with the provisions of the applicable IEC standard 60270.
Maintenance and repairs
High-voltage test systems and special measurement technology are subject to heavy loads, especially when they are used for routine testing. We are happy to carry out any necessary maintenance and repairs. If requirements change over time, we also add new functions.
We offer this service for devices manufactured by us as well as for third-party devices.