BAUR measuring technique: Meaningful results and standard compliant
Based on international research as well as decades of practical experience, VLF cable testing and diagnostics on medium-voltage systems is now a recognised method among leading bodies and associations. What this means for you is that cable and sheath testing as well as diagnostic measurements with VLF voltage are performed in compliance with standards. You don't have to concern yourself with standard-compliant work procedures as we've already taken care of that for you. You decide which standard you would like to follow; our devices come with the according procedures. Through the creation of customised sequences , the BAUR Software 4 for testing and diagnostics also enables standard-compliant testing and diagnostics with the appropriate flexibility to design your own diagnostics philosophy – for optimum integration in your diagnostics sequences.
Excerpt from standards
|Test standards for medium-voltage cables||Contents|
1 kV to 30 kV cables
New IEC standard, describes VLF testing as an acceptance test
Also includes diagnostics during the voltage test
|Cenelec HD 620 1996,
VDE 6 kV to 30 kV cables
|Harmonisation document for IEC, VDE European standard for acceptance tests since 1996|
6 kV to 30 kV cables
|Guide for field testing and evaluation of the insulation of shielded power cable systems rated 5 kV and above. Detailed overview of testing and diagnostics methods|
|IEEE 400.2-2013||Guide for field testing of shielded power cable systems using VLF test voltage. Detailed guide for VLF testing and diagnostics.|
|IEC 60229||Sheath testing|
|IEC 60270||Describes partial discharge measurement|
|IEC 60060-3||Describes the requirements concerning
the properties of the
VLF voltage shape
Cable diagnostics with BAUR devices and software makes it possible to depict each standard. The BAUR Software 4 enables easy integration in your own diagnostics philosophy.
BAUR measurement methods for underground cables and accessories:
The dissipation factor measurement
(tan δ measurement)
Dissipation factor measurement is a non-destructive and integral procedure that serves to evaluate the condition of an entire cable route.
Partial discharge testing
Partial discharge diagnostics is used to determine possible fault locations in cables and accessories before they lead to failure.
Online PD testing
With the help of liona, the portable BAUR online PD spot tester, cables can also be tested for partial discharges whilst live (online).
Monitored Withstand Test
The time-saving combination of testing and diagnostics is known as the Monitored Withstand Test (MWT).
Further topics relating to cable testing and diagnostics:
home of diagnostics
Unrivalled measurement and testing expertise under one roof
With BAUR, the "home of diagnostics", measurement engineers and asset managers can plan repairs proactively and cost-effectively with greater assurance than ever before.
Compact and powerful – BAUR voltage sources
The BAUR truesinus® voltage sources are handy and suitable for all relevant daily tasks – whether cable testing or diagnostics. They ensure highly reliable results and, thanks to the truesinus® technology developed by BAUR, they provide an ideally formed low-frequency sine voltage as well as the DC voltage required for sheath testing.