ETL-40

CABLE TEST VAN

ETL-40 is a fully equipped van-mounted cable test and fault location system which allows to:

Test cable insulation with DC voltage up to 40 kV;
Burn faulty cable insulation with a DC current up to 1 A;
Pre-locate cable faults with an aid of a built-in time-domain reflectometer;
Pinpoint faults with an acoustic method.

Home
Photos
FAQ

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 high DC voltage up to 40 kV.

FAULT PRE-LOCATION

Time-domain reflectometer RIF-9, integrated into the ETL-40 control panel, is used for detecting and determining the distance to various types of faults in electrical power cables with the main pre‑location methods:

Low-voltage method

TDR (time-domain reflectometry): low-resistance faults and breaks.

High-voltage methods

ARC/ARC multi-shot (single impulse / multiple impulse arc reflection method): high-resistance and unstable faults.
ICE (impulse current envelope method): high-resistance faults that cannot be converted to low-resistance ones by burning faulty insulation.
DECAY (voltage wave oscillation method): faults with high breakdown voltage.

BURN UNIT

As standard ETL-40 systems are equipped with a burn unit which delivers current up to 1 A at up to 20 kV voltage.

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

SURGE WAVE GENERATOR WITH A VOLTAGE LEVELS SWITCH

A surge wave generator with up to 2000 J surge energy is used in ETL-40 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 / 16 / 32 kV, which delivers maximum possible energy of the surge pulses.