ETL-40 is a fully-equipped van-mounted cable test and fault location system.

Centralised digital control provides easy operation of the system while multi‑level safety and protection ensures complete operator safety.
Etl 40 699x477


The entire system is controlled from a central operator station. Microprocessor based operation ensures high measurement accuracy and reliability of the test results.

Etl 40 cu 1200x831
Etl 40 1200x831


ETL-40 cable test van allows to carry out cable acceptance tests with DC (rectified) high voltage up to 40 kV.


Time-domain reflectometer RIF-9 included with the system is used for determining the distance to faults in electrical power cables with all the main pre‑location methods:

Low-voltage method

  • TDR (time-domain reflectometry): low-resistance faults, open cable breaks, various impedance changes characterization (cable sleeves, branches, etc.), total cable length measurement (incl. on a drum or bundle) and cable shortening ratio measurement.

High-voltage methods

  • ARC/ARC multi-shot (arc reflection method): high-resistance and unstable faults, minimal harmful effects on a cable.
  • ICE (impulse current envelope method): high-resistance faults that cannot be converted to low-resistance by burning faulty insulation.
  • DECAY (voltage wave oscillation method): faults with high breakdown voltage.
Etl 40 lokalizaciya 1200x831
Cabel prodgig 03 1200x831


ETL-40 systems are equipped as standard with a burn unit delivering up to 300 mA current at up to 20 kV voltage.

High-resistance cable faults may be converted to the low-resistance faults by burning faulting insulation, which allows to subsequently apply pre-location and/or pinpointing methods for precise fault localisation.


A surge wave generator with up to 2000 J surge energy is used for pinpointing cable faults with an acoustic method.

The generator is supplemented with a surge level switch allowing to select output voltage in the ranges of 0…8 / 0…16 / 0…32 kV, which delivers maximum possible energy of the surge pulses.

Etl 40 akustik 1200x831
Etl 40 scheme 1200x831


ETL-40 is designed to fit into the majority of the popular vehicles.

The compact composition of the modules making the system allows it to be mounted even in short wheel base vans.


All cable test vans of ETL family are equipped with all-round operator safety systems consisting of the following modules and devices:

✓ Overvoltage and overcurrent protection.

✓ Overheating protection.

✓ Equipment and vehicle chassis protective earthing.

✓ Continuous grounding monitoring system.

✓ Emergency stop button.

✓ Automatic discharge device.

✓ Light and sound indication of high voltage.

✓ Vehicle high-voltage compartment door closure sensors.

✓ Safety ON/OFF keylock switch.

✓ Self-health and safety monitoring of high-voltage switches.

Etl safety w 1200x831
* Pictures used herein are for illustration purposes only. Products' specifications are subject to change without notice. *

Technical Specifications
High-voltage testing (DC) Output voltage range 0 … 40 kV
  Output current range 0 … 300 mA
  Voltage adjustment type Continuous
  Indication Digital output voltage and leakage current in real time
  Measurement error ± 3 %
Fault conditioning (Burn) Output DC voltage range 0 … 20 kV
  Output current range 0 … 1 A
  Voltage adjustment type Continuous
  Indication Digital output voltage and leakage current in real time
  Measurement error ± 3 %
Fault pre-location (RIF-9) Pre-location methods


• ARC single shot

• ARC multi-shot



  Measurement ranges (for shortening coefficient of 1.50 or V/2 = 100 m/μs) 0 … 60 / 120 / 250 / 500 / 1000 / 2000 / 5000 / 10,000 / 20,000 50,000 / 120,000 m

• for shortening coefficient of 1.5 (v/2 = 100 m/μs)

• for shortening coefficient 1.87 (v/2 = 80.2 m/μs)

0.5 m

0.4 m

  Distance measurement accuracy 0.2 % of measurement range
  Sampling rate 200 MHz
  Time mark accuracy 0.01 %
  Output impedance range 2 … 100 Ω, resolution 2 Ω
  Probe pulse parameters:  

• voltage

• width range

45 V

10 ns … 100 µs

  Gain range - 21 … + 69 dB
  Shortening coefficient range 0.750 … 3.000, resolution 0.001
  Propagation velocity v/2 range 50.0 … 200.0 m/μs, resolution 0.1 m/μs
  Probe pulse parameters:  

• reflectograms with parameters

• data on cable shortening coefficients



Fault pinpointing (Surge) Surge voltage range levels

• 0 … 8 kV

• 0 … 16 kV

• 0 … 32 kV

  Voltage adjustment type within each level Continuous
  Surge energy at each level up to 2000 J
  Surge rate

• Single discharge, manually triggered

• 4 … 12 surges/min, automatic mode

  Indication Digital output voltage in real time
Controls and interfaces Connection interfaces

• USB-A (user memory stick, formatted under FAT32)

• USB-B (service only)

  Graphical display  

• System control

• Reflectometer RIF-9

6” monochrome LCD, 320 × 240 px 10.4” colour TFT, 800 × 600 px, resistive touch
  Operating modes switch Manual
  Surge voltage levels switch Manual
  Secondary control interface Rotary encoder
  Internal memory 10,000 test results
Connections HV test cable 50 m
  Power supply cable 50 m
  TDR connection cable, 2-phase 30 m
  Protective earthing cable KEP-10GCt, copper 10 mm2, transparent 50 m
  Earthing control cable (red) 15 m
Safety Isolating transformer 4 kVA
  Grounding Continuous grounding monitoring system
  Step voltage monitoring Van chassis potential control
  Protection Overvoltage, overcurrent, overheating
  Emergency Emergency stop button, operator keylock switch, open rear door monitoring, automatic discharge
  Protection rating (as per EN 60529) IP 20
Power supply and consumption Supply voltage 230 V ±10 % AC, single phase
  Supply frequency 50 Hz
  Power consumption 2.5 kVA
Physical Weight up to 400 kg

Related products

ETL-15 – Compact cable test van
SWG-12 & SWG-32 – Mobile cable test and fault location system
LFG-200 – Low frequency generator
Cables & wires – High-voltage cables
VLF-60 – Portable high-voltage VLF test system
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