VLF Insights | Sumble

What is VLF?

Very Low Frequency (VLF) refers to radio frequencies in the range of 3 kHz to 30 kHz. Because of their long wavelength, VLF waves can penetrate water and propagate long distances, making them useful for submarine communication. They are also used for time signals and geophysical research. VLF signals are subject to atmospheric noise and require large antennas for efficient transmission and reception.

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What other technologies are related to VLF?

VLF Competitor Technologies

Tan Delta

Tan Delta testing is an alternative method for assessing insulation quality, providing similar information to VLF testing.

mentioned alongside VLF in 81% (205) of relevant job posts

DC Hipot

DC Hipot testing is a different approach to insulation testing, using DC voltage instead of AC.

mentioned alongside VLF in 100% (132) of relevant job posts

Insulation Resistance

Insulation Resistance testing, often done with a megohmmeter, is another method to assess insulation integrity.

mentioned alongside VLF in 49% (171) of relevant job posts

Power Factor

Power Factor testing, similar to Tan Delta, is a method for evaluating the condition of insulation in electrical equipment.

mentioned alongside VLF in 22% (190) of relevant job posts

High-Pot

High-Potential (Hipot) testing, in general, is a broad term for insulation testing, making it a competitor to VLF if used for similar purposes.

mentioned alongside VLF in 71% (54) of relevant job posts

Doble

Doble instruments are often used for comprehensive electrical apparatus testing, including insulation assessment which competes with VLF testing.

mentioned alongside VLF in 21% (184) of relevant job posts

Megger

Megger is a manufacturer of insulation testing equipment, including megohmmeters used for insulation resistance testing, making it a competitor.

mentioned alongside VLF in 2% (95) of relevant job posts

VLF Complementary Technologies

ground fault detector

Ground fault detectors are complementary because VLF testing can help identify insulation weaknesses that could lead to ground faults, which the detector can then sense during operation.

mentioned alongside VLF in 98% (55) of relevant job posts

PowerDB

PowerDB and similar database/software solutions help manage and analyze test data, including data from VLF tests, making them complementary.

mentioned alongside VLF in 12% (78) of relevant job posts

IR camera

IR Cameras can be used to identify thermal issues and potential problems during or after VLF testing, making it complementary.

mentioned alongside VLF in 17% (55) of relevant job posts