ETL-10M

CABLE TEST VAN

ETL-10M is a cable test van with a three-phase connection method designed for testing cable insulation with DC voltage up to 60 kV and testing other electrical objects with AC voltage up to 50 kV at industrial frequency.

The system also allows to pre-locate cable faults with an aid of a built-in time-domain reflectometer and pinpoint faults with an inductive and acoustic methods.

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THREE-PHASE CONNECTION

ETL-10M allows to connect to up to three coble cores simultaneously with an option to select the desired core to be tested from the control panel.

Three-phase connection makes fault location quick, easy and safe – it enables phase comparative pre-location methods, yet does not require an operator to switch the connection cables.

DC & AC TESTING

ETL-10M allows to carry out withstand insulation testing with high DC voltage up to 60 kV and high AC voltage up to 50 kV at industrial frequency (f = 50 Hz).

FAULT PRE-LOCATION

Time-domain reflectometer RIF-9, built into 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.

POWERFUL BURN UNIT

All ETL-10M systems are supplied with a powerful burn unit with output current up to 6 A in voltage ranges (0 … 1 kV / 5 kV / 10 kV / 20 kV), and current of 12 A in the voltage range of (0 … 0.5 kV).

Burning allows to convert high-resistance faults into low-resistance ones, which makes it possible to subsequently apply pre-location and/or pinpointing methods for precise fault localisation.

SURGE WAVE GENERATOR WITH VOLTAGE 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 / 16 / 32 kV, which delivers maximum possible energy of the surge pulses.

CABLE TRACING AND FAULT PINPOINTING WITH INDUCTION METHOD

Cable test van ETL-10M can be supplied equipped with low frequency generator LFG-200 which provides up to 200 V•A of output signal power.

Addition of the generator turns ETL-10M into a powerful system for tracing and determing the burial depth of underground utilities, as well as pinpointing cable faults with the induction method.