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 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

SEBAKMT HL7000 ELECTROACOUSTIC WATER LEAK DETECTION

• Completely wireless thanks to Bluetooth®
• Intuitive operation via touch color display
• Powerful lithium-ion batteries
• Integrated GPS receiver
• Ambient/noise cancellation
• Frequency analysis

SEBA KMT GEOLUX GL 660-1 EARTH FAULT LOCATOR FOR FAULT LOCATION IN ISOLATED, EARTH FREE SYSTEMS

• Earth fault locator for fault location in isolated, earth free systems
• Mains filter for direct coupling to live cables up to 660 V
• Pulsed output current for easier detection of the test signal
• Filter for the suppression large interference signals
• Location of earth faults up to 150 kOhm
• No switch off during the fault location required
• No influence to the signal lines connected to

SEBA KMT EZ-THUMP CABLE FAULT LOCATION SYSTEM ON LV/MV CABLES

• Easiest, fully automatic operation
• All in one small and portable unit
• ARM Prelocation
• Pinpointing with 500 J
• Available as 4 or 12 kV version
• Bright, brilliant colour display
• Battery operation

SEBA KMT EASYLOC CAM LOCATION SYSTEM FOR LOCATION AND DEPTH MEASUREMENT OF SEWER TV CAMERAS

• 3 active frequencies (512 Hz, 640 Hz und 33 kHz)
• depth measurement at the push of a button
• Maximum marker to mark the strongest signal
• optional: Carry Bag - for easy and safe transport of Easyloc Cam
• optional: Pipeline sonde - for location non-metallic pipes

SEBA KMT HPG 70-K 70KV DC HIGH VOLTAGE HIPOT TESTER

• fully insulated test set for DC testing up to 70 kV
• Testing of cables, switchgear, current-transformers, MV plant/ component testing,
• Highest safety thanks to fully insulated design
• Compact and lightweight
• Separate control and HV-unit
• Voltage continuously adjustable
• Expandable with a VLF CR attachment for VLF testing on MV cables

SEBA KMT VM-810 LOCATION UNDERGROUND PIPES AND CABLES

• Easy to use
• High location accuracy
• Optimal inductive transmission of line signals
• Signal "jumps over" insulating pipe sleeves

SEBA SURGEFLEX SFX-40 SPG-40 CABLE FAULT LOCATING SYSTEM

• DC Testing up to 40 kV ARM, ICE and Decay Method integrated
• Operation by VGA Display and single button rotary encoder
• High surge energy fort he acoustic pinpointing 1000 or 2000 J
• Surge voltage levels for MV cablel 0 ... 12,5/25 kV or 0 ... 16/32 kV
• Surge voltage levels for lower voltage 0 ... 3/6 kV or 0 ... 4/8 kV
• Integrated safety system

SEBA KMT VFL CR-80 46KV HIGH VOLTAGE CABLE TEST SYSTEMS

• Powerful 0.1 Hz VLF test system
• High test power without frequency reduction
• No polarisation effects as by DC testing
• Protocoling
• Breakdown recognition
• Leakage current measurement

SEBA KMT VFL CR-60-HP LONG CABLES TEST SYSTEMS

• Very high test power without frequency reduction
• Covers cables up to 20 km @ maximum Voltage
• No polarisation effects as with DC
• Protocoling
• Breakdown detection
• Leakage current measurement
• Powerful 0.1 Hz VLF test system with energy recovery