ETL-40
CABLE TEST VAN
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.
CENTRALISED CONTROL
The entire system is controlled from a central operator station. Microprocessor based operation ensures high measurement accuracy and reliability of the test results.
DC TESTING
ETL-40 cable test van allows to carry out cable acceptance tests with DC (rectified) high voltage up to 40 kV.
FAULT PRE-LOCATION
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.
BURN UNIT
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.
SURGE WAVE GENERATOR WITH A SURGE LEVELS SWITCH
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.
FITS INTO MOST VEHICLES
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.
SAFETY
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.
