In accordance with most regulations, cables and joints must be tested after installation or repair. For this test the breakdown strength of the cable is tested.

The portable VLF Test System 20 kV of Seba KMT can be used to test the cables in conjunction with the according local regulations for operating voltage levels up to 11 kV for new cables and 16 kV for aged cables at 3 µF cable capacity.

By using the patented Seba KMT 0.1 Hz Cosine Square Wave Voltage, weak and for further operation critical spots in PE, XLPE but also in paper cables are brought to a controlled breakdown very fast without causing additional damage or ageing to the cable insulation.

The weight of 50 kg make the VLF Test System 20 kV a powerful, universal and at the same time portable unit.

_ The patented change over principle in combination with

the recycling of energy stored in the cable capacity

results, in comparison to other methods, in a lower

weight, less energy consumption and much higher test

capacity.

_ The high test capacity of 3 µF permits the simultaneous

testing of all three phases.

_ The method is officially recommended by the two VDE

Standards 0276-620 and 0276-621.

_ Independent researches shows that VLF test is done

most effectively with the 0.1 Hz cosine square wave

shape compared to any other VLF wave shape or

frequency.

_ VLF is the most economic method for testing PE and

XLPE cables. DC test is not applicable for these cable

types.

_ controlled output voltage

Standard accessories

Scope of Delivery

_ Basic unit

_ AC mains cable

_ Earthing cable 4 m

_ HV-connection cable 4 m

_ Accessory bag

_ Operating manual

Recommended options

Options

_ Breakdown recognition and automatic shut-down.

_ VLF / DC leakage current measurement

More products SEBAKMT

SEBA KMT VFL CR-20 VERY LOW FREQUENCY CABLE TESTING SYSTEM

• VLF Test System 20 kV
• high test capacity of 3 µF permits the simultaneous testing of all three phases
• method is officially recommended by the two VDE Standards 0276-620 and 0276-621
• VLF is the most economic method for testing PE and XLPE cables

SEBA KMT ESG NT PINPOINTING EARTH FAULT LOCATOR IN SHEATH OF UNDERGROUND CABLES

• high accuracy pinpointing of a sheath fault
• Automatic adaptation to voltage level
• Automatic filtration of interfering signals
• Automatic zero calibration, no adjustments necessary
• History mode
• High-contrast color display

SEBA KMT HPG 50..80-D DC & AC HIGH VOLTAGE CABLE TESTER

• HPG 50-D, AC testing up to 35 kVRMS/ DC testing up to 100 kV
• HPG 70 / 80-D, AC testing up to 50 / 58 kVRMS / DC testing up to 140 / 150 kV
• Suitable for AC testing and DC testing
• Compact, cast-resin high-voltage transformers
• Separate control and HV-units
• Voltage continuously adjustable
• Powerful system: 1,2 kVA continuous operation, up to 3 kVA 60 min. short-time operation

SEBA SURGEFLEX SFX-32 SPG-32 CABLE FAULT LOCATING SYSTEM

• »» DC-testing up to 32 kV
• »» Prelocating
• - Reflection measurement
• - ARM measurement
• (Arc Reflection Method) up to 32 kV
• - Decay up to 32 kV
• - ICE Impulse Current Method
• 0�4 / 8 / 16 / 32 kV
• »» Burning (fault conditioning) up to 32 kV
• »» Cable tracing (optional)
• »» Pinpointing
• - Distance and acoustic measurement
• 0 � 8 / 16 / 32 kV at 1750 J

SEBA KMT PD SURVEYOR AIR PARTIAL DISCHARGE DETECTOR FOR MEDIUM VOLTAGE CABLES, SWITCHGEAR, PLANTS

• Three PD sensor technologies in one device
• Early detection of PD activity
• Universal application - can be applied to
• MV cables, MV switchgear & other types of MV plants
• Directs maintenance resources straight to the problem areas
• Easy to use

SEBA KMT BT 500 IS-1 CABLE FAULT CONVERTER

• Overload protection
• Automatic discharge
• Burning of high resistive faults
• Low- potential free voltage avoids damage to other conductors
• Adjustable current limiter

SEBA KMT VFL CR-28..60 VLF TEST SYSTEMS FOR MEDIUM VOLTAGE CABLE TESTING

• VLF CR-28 up to cable series 15 kV
• VLF CR-40 up to cable series 23 kV
• VLF CR-60 up to cable series 35 kV
• VLF, DC and sheath fault testing in one device
• Portable thanks to two-part construction
• High test capacitance
• Integrated discharge system
• Reporting

SEBA KMT MMG 10 CABLE SHEATH TESTER

• Adjustable current limiter
• Easy and powerful testing of cable jackets
• Pulsed output voltage for sheath fault pinpointing
• Burning of cable faults

SEBA KMT HPA35 HPA50 HPA58 HPA78 AC HIGH VOLTAGE HIPOT TESTING WITHSTANDING

• HPA 35, AC testing up to 35 kVrms
• HPA 50 / 58 AC testing up to 50 / 58 kVrms
• HPA 78, AC testing up to 78 kVrms

SEBA KMT CI LCI CABLE IDENTIFIER TEST SET

• Inexpensive cable selection system
• Easy to operate
• Safe handling
• Very small