KharkovEnergoPribor Ltd.
Model ETL-8 - Compact Cable Test Van
Van-based cable test and fault location system ETL-8 is used for testing cable insulation and locating cable faults using a variety of methods. Due to its compact size, ETL-8 may be installed in a minivan, yet it is a fully-featured cable test and fault location system which incorporates burn module and surge wave generator, and is capable of faults pre-location and cable insulation testing with high DC voltage.
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FITS INTO COMPACT VEHICLES
ETL-8 can fit into most minivans, which is an ideal solution for cable fault location in dense urban areas and on narrow streets.
DC TESTING
ETL-8 system allows to carry out cable acceptance tests with DC (rectified) high voltage up to 8 kV.
FAULT PRE-LOCATION
Detachable 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.
- 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-8 is supplied with burn unit as standard which delivers current of up to 100 mA at up to 8 kV voltage.
Fault conditioning through burning faulty cable insulation is used for converting high-resistance faults to low-resistance so that pre-location and/or pinpointing methods could subsequently be used.
SURGE WAVE GENERATOR WITH A SURGE LEVELS SWITCH
A surge wave generator with up to 1000 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…2 / 0…4 / 0…8 kV, which delivers maximum possible energy of the surge pulses.
SAFETY
All-round operator safety systems built into ETL-8 includes 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.