Powerful 0.1 Hz VLF test system with energy recovery for testing of cables with Cosine Rectangular Wave voltage according to VDE, IEC and IEEE.
In accordance with most regulations, cables and joints must be tested after installation or repair. The Seba KMT VLF Test System CR 60 kV can be used to test cables with operating voltage levels up to 36 kV. The system consists of a control unit and a HV unit. The high test capacity of 6.5 μF permits the simultaneous testing of all three phases. Positive and negative DC testing of cables and connected switchgear can be carried by DC Mode.
This VLF Test System CR 60 kV can be used both as a stand alone system and as integrated part of a test van system.
The VLF sine wave 34 kV is a compact, robust and portable VLF sine wave test system for medium voltage cables.
The design, optimized for rapid transportation and quick setup, and the continuous duty cycle are two attributes that qualify the system
as an ideal tool for routine cable testing. For both 0.1 Hz sine wave voltage tests and rectangular or DC voltage tests, the VLF sine wave 34 kV fills the highest demands on the test voltage quality and stability. Moreover, the integrated “breakdown detection“ shuts down the test voltage in the event of an excessive charge current and guarantees limited damage to the cable.
Consistent single-button operation combined with a sophisticated operating concept allows a fast and targeted use of the system.
The VLF Sine Wave 45, with optional integrated tanδ, is a compact system for commissioning, testing and condition analysis of medium-voltage cables. This unit performs very low frequency (VLF), DC, and sheath integrity testing as well as sheath fault pinpointing when combined with the optional ESG NT step voltage probe. Ideal for both routine testing and complicated diagnostics, the VLF45 has a multi-purpose design with a continuous duty cycle.
For 0.1 Hz sine wave, rectangular or DC voltage tests, the VLF45 provides enhanced voltage quality and stability. In the event of excessive charge current integrated breakdown detection shuts down the test, ensuring limited damage to the cable. Up to 1000 measurements can be stored in the internal memory and results can be viewed on the unit or downloaded via the USB port to the included Easyprot software for reporting.
An optional internal tanδ is available that automatically evaluates results for PE, XLPE and PILC type cables based on insulation and selected compliance standard. Combined with the optional ESG NT step voltage probe, the VLF45 can pinpoint sheath faults.