HIGHLY PORTABLE FAULT LOCATION SYSTEMS FOR LV NETWORKS | EZ-THUMP 3 kV and EZ-THUMP 4 kV
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EZ-THUMP™ 3 kV & 4 kV Portable Cable Fault Location Systems EZ-THUMP™ 3 kV & 4 kV, Models V2 Portable Cable Fault Location Systems for Low Voltage Cables ■ Dual-stage capacitor surge discharge: 500 J @ 1.5 kV & 3.0 kV for new 3 kV model ■ Single-stage capacitor surge discharge: 500 J for 4 kV model ■ Compact and lightweight, 75 lbs (34 kg) ■ Battery and AC line operation; field-replaceable battery ■ Automatic end of cable and distance to fault indication ■ Up to 94 mA current, depending on voltage ■ F-OHM safety feature to ensure safe grounding ■ Interface for remote EMERGENCY OFF box ■ HiBrite color display for excellent outdoor visibility ■ TDR prelocation of very low resistance faults ■ ARM® prelocation of high resistance/flashover faults ■ Fault pinpointing, high- and low-resistive fault ■ Sheath testing and sheath fault locating DESCRIPTION The new dual-stage 3 kV EZ-Thump is the first of its kind in the entire market, and along with the updated 4 kV singlestage unit they are portable, compact and lightweight, battery and AC line operated cable fault location systems specifically designed for fault locating of shielded and unshielded low voltage power cables. Due to their portable, robust and (wet) outdoor-capable enclosure, they are ideally suited for all typical fault locating operations on LV cables either in industrial applications up to 3 kV or 4 kV, street light fault locating or fault locating of LV power circuits in the utility industry. The EZT3DV2 model is the only dual-stage 3 kV unit in the market which addresses LV cables with either 600 V or 1000 V ratings and a max permissible test level of 3 Uo (1.8 kV or 3 kV). The EZ-Thump units offer: ■ TDR method to prelocate very low resistance cable faults. ■ Arc Reflection Method (ARM®) prelocation of high resistance/flashover faults. ■ Dual-stage 500 Joule surge generator for pinpointing of high resistive faults at 0-1.5 kV or 0-3 kV (3 kV model) or as single-stage 500 J 0-4 kV (4 kV model). ■ Testing 0-1.5 / 0-3 kV or 0-4 kV for breakdown detection. ■ Insulation resistance measurement. ■ Sheath testing and sheath fault locating. ■ Dual stage 0-1.5 kV / 0-3 kV or single-stage 0-4 kV DC testing. APPLICATIONS Testing (proof/insulation testing, sheath testing) Used to test the dielectric strength of the cable or sheath insulation and, if the test fails, to determine the breakdown voltage. For this purpose a test voltage up to 1.5 kV, 3 kV kV or 4 kV is applied to the cable under test indicating the resistance value. Fault prelocation After identifying the type of fault as high resistance/flashover, prelocation of any concentric neutral type LV cable can be determined using ARM. In ARM, the electrical arc from the flashover creates a temporary "jumper" to the neutral. During this condition, a standard TDR measurement is made into what is basically a short circuit fault providing a negative reflection at the location of the fault. Multi-conductor nonshielded LV cables with the same type of fault can be typically processed in the same way (phase to phase or phas

EZ-THUMP™ 3 kV & 4 kV Portable Cable Fault Location Systems Faults identified as low resistance/non flashover type in either shielded or unshielded cables can be prelocated using the TDR method. Pinpoint fault location Accurate pinpoint fault location of high resistance faults is achieved using the "Thunder & Lightning" method whereby the 4 kV single or 3 kV dual stage 500 Joule surge generator (thumper) and an acoustic/electromagnetic receiver are used. Pinpointing of low resistance faults in unshielded cables requires the additional ESG NT digital ground/ earth fault locator with or...

EZ-THUMP™ 3 kV & 4kV Portable Cable Fault Location System;; ORDERING INFORMATION NOTE: Prep kit feature C and permanently attached cart feature WK are mutually exclusive. * Software options can be combined in any way **Prep kit accommodates either cable lengths of 15 ft (4.5 m) or 50 ft ( 15 m) ***Permanently attached cart accommodates either cable lengths of 15 ft (4.5 m) or 50 ft (15 m) SALES OFFICE EZ ThumpModelV2_3-4kV_DS_US_V02aa Dallas, TX 75237-1019 USA The word 'Megger' is a registered trademark