Very Low Frequency (VLF)

BAUR Very Low Frequency (VLF)

Reliable cable testing and diagnostics with BAUR truesinus® VLF technology.

BAUR VLF systems support daily cable testing, sheath testing, tan δ diagnostics, partial discharge measurement workflows, and condition evaluation using an ideally formed low-frequency sine voltage.

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✓ truesinus® VLF voltage sources ✓ Testing and diagnostics options ✓ Purchase and rental availability

MODE: VLF 0.1 Hz SINE
APPLICATION: Cable testing / diagnostics
OUTPUT: truesinus® low-frequency voltage

VLFLow-frequency cable testing

TDtan δ condition evaluation

PDPartial discharge measurement support

DCSheath testing voltage support

Compact and powerful VLF sources for cable testing and diagnostics.

BAUR truesinus® voltage sources as handy solutions for relevant daily tasks, including cable testing and diagnostics. The truesinus® technology provides an ideally formed low-frequency sine voltage and the DC voltage required for sheath testing.

Support daily field tasks

Use BAUR VLF systems for cable testing and diagnostic workflows where reliable test voltage and repeatable results are required.

Improve tan δ measurement quality

The ideally formed truesinus® waveform supports highly accurate tan δ measurement, meaningful PD measurement results, reproducibility, and comparability.

Evaluate cable condition

VLF 0.1 Hz sine voltage is suitable for tan δ measurement used in cable condition evaluation, helping teams recognize small rises and detailed cable properties.

Choose the BAUR VLF solution for your application.

BAUR VLF category includes VLF testing units, tan delta configurations, PD diagnostic systems, software, statistical lifetime assessment tools, and rental options.

Testing + diagnostics

Frida

BAUR VLF testing and diagnostics unit

Testing and diagnostics in one device
Designed to provide clear and reliable cable condition information
Uses BAUR VLF technology for cable testing workflows
Suitable when teams need a compact VLF testing and diagnostics unit

View Frida

Tan delta

Frida TD

BAUR VLF testing and diagnostics unit with tan delta

Frida configuration with tan delta diagnostic capability
Supports cable testing and diagnostics in one device
Useful for condition evaluation with tan δ measurements
Helps maintenance teams compare and trend diagnostic results

View Frida TD

Rental option

Frida Rental

BAUR VLF testing and diagnostics rental unit

Rental unit for temporary VLF testing and diagnostics projects
2-week rental period
Practical option for urgent testing or short-term project work
Contact us to confirm availability and timing

View Rental

Portable high performance

PHG 80 Portable

BAUR VLF diagnostic test system with truesinus®

Portable, high-performance test generator with VLF truesinus® technology
VLF diagnostic test system
Suitable for teams needing portable high-performance VLF testing
Contact us to confirm configuration and accessories

View PHG 80 Portable

Tan delta diagnostics

PHG 80TD

BAUR VLF diagnostic test system with truesinus® and tan delta

Combines PHG 80 programmable VLF testing with tan delta diagnostics
Supports cable testing and diagnostic workflows
Useful where tan δ results are required for condition evaluation
Designed for technical teams managing MV cable reliability

View PHG 80TD

TD + PD diagnostics

PHG 80TD/PD

BAUR VLF diagnostic test system with truesinus®, tan delta, and PD

Listed for cable testing and diagnostics with TD/PD workflow
Supports tan delta and partial discharge diagnostic applications
Designed for more complete cable condition assessment programs
Contact us to confirm the full system configuration

View PHG 80TD/PD

MV cables up to 35 kV

VIOLA

BAUR VLF cable test system with truesinus®

For medium-voltage cables up to 35 kV
Uses latest VLF truesinus® testing technology
Designed for medium-voltage cable testing workflows
Suitable for utilities, industrial sites, and maintenance contractors

View VIOLA

VLF + tan delta

VIOLA TD

BAUR VLF cable test system with truesinus® and tan delta

For medium-voltage cables up to 35 kV
Combines VLF truesinus® cable testing with tan delta diagnostics
Supports condition evaluation where TD measurement is required
Helps teams move from withstand testing to diagnostic insight

View VIOLA TD

Software

BAUR Software 4

Software for condition evaluation and reporting

Supports better decisions based on comprehensive condition information
Used with BAUR testing and diagnostics workflows
Helps organize diagnostic results and reporting
Useful for asset managers and cable maintenance teams

View BAUR Software 4

Lifetime assessment

Statex®

BAUR statistical analysis for cable lifetime assessment

Experience-based analysis of cable condition
Supports prognosis of statistical remaining cable life
Useful for asset management and long-term maintenance planning
Complements VLF and diagnostic measurement programs

View Statex®

Need help choosing?

Application Support

We can help select the right VLF test configuration

Cable voltage class and test standard requirements
Withstand testing vs. tan delta diagnostics
Partial discharge diagnostic workflow requirements
Purchase vs. short-term rental decision

Contact RCC Electronics

Category summary

truesinus® Technology

Low-frequency sine voltage for reliable VLF diagnostics

Ideally formed low-frequency sine voltage
Supports highly accurate tan δ measurement
Provides meaningful partial discharge measurement support
Enables reproducible and comparable measured values

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Quick comparison

Use this table as a practical starting point before contacting us to confirm the best BAUR VLF configuration.

Product	Best fit	Main strengths	Typical application
Frida	Teams needing testing and diagnostics in one VLF unit	Compact VLF testing and diagnostics workflow	Cable testing and clear condition information for maintenance decisions
Frida TD	Users who need Frida with tan delta diagnostics	VLF testing plus tan δ condition evaluation	Diagnostic testing where tan delta measurement is required
Frida Rental	Short-term VLF testing projects	Rental option listed for a 2-week period	Temporary projects, urgent cable testing, or project-based diagnostics
PHG 80 Portable	Portable high-performance VLF testing	VLF truesinus® diagnostic test system	Field cable testing where portable high-performance output is required
PHG 80TD	VLF testing with tan delta diagnostics	PHG 80 programmable testing with TD diagnostic capability	Condition evaluation programs requiring tan δ data
PHG 80TD/PD	More complete diagnostic programs	TD and PD diagnostic workflow support	Cable testing and diagnostics where both tan delta and PD insight are required
VIOLA	Medium-voltage cable testing up to 35 kV	VLF truesinus® cable test system	MV cable testing for utilities, plants, and service teams
VIOLA TD	MV cable testing with tan delta diagnostics	VLF truesinus® plus tan-delta capability	MV cable test and diagnostic workflows up to 35 kV
BAUR Software 4	Teams standardizing condition evaluation and reports	Software support for decision-making and reporting	Data management, reporting, and asset condition review
Statex®	Asset managers planning long-term cable maintenance	Statistical cable lifetime assessment	Condition analysis and remaining-life prognosis

Need help selecting a BAUR VLF system?

Share your cable voltage class, test standard, required diagnostics, rental or purchase timeline, and reporting needs.we can help recommend the practical VLF configuration.

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Frequently asked questions

Common questions when selecting a BAUR VLF cable testing and diagnostics solution.

What is BAUR truesinus® technology used for?

BAUR truesinus® voltage sources provide an ideally formed low-frequency sine voltage for VLF cable testing and diagnostics. we provide the DC voltage required for sheath testing as well.

Why is VLF 0.1 Hz sine voltage useful for tan δ measurement?

VLF 0.1 Hz sine voltage as more suitable for tan δ measurement used in condition evaluation than other typical voltage shapes or frequencies. The ideal long-wave sine helps produce high-resolution TD measurement results.

Which product should I choose for a rental project?

The category includes Frida Rental, listed as a rental unit with pricing shown for a 2-week rental period. Contact RCC Electronics to confirm rental availability, included accessories, and scheduling.

Which systems include tan delta diagnostics?

Frida TD, PHG 80TD, and VIOLA TD as tan delta configurations. PHG 80TD/PD is listed for TD and PD diagnostic workflows.

Which BAUR VLF product is listed for medium-voltage cables up to 35 kV?

VIOLA and VIOLA TD for medium-voltage cables up to 35 kV, with VIOLA TD adding tan-delta capability.

Scroll to the bottom to see product listing

truesinus®:

Compact and powerful – BAUR truesinus® 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:

Highly accurate tan δ measurement

Thanks to the ideally formed truesinus®, you can rely on highly accurate measurements of the tan δ (tan delta or TD) and meaningful results for partial discharge measurement, as well as good reproducibility and comparability of the measured values.

This following speaks for the truesinus® technology

The VLF 0.1 Hz sine voltage is much more suitable for the tan δ measurement, which is important for condition evaluation, than other typical voltage shapes or frequencies. The ideal, long-waved sine enables TD measurement results
with the highest resolution. With these results, small rises and detailed properties can be recognised and evaluated. With regard to the dissipation factor measurement, the measurement with truesinus® is more sensitive than a measurement with operating frequency.