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Megger EZ-THUMP4 Portable Fault Location System
  • Megger EZ-THUMP4 Portable Fault Location System

Megger EZ-THUMP4 c/w 15 ft Cables

Megger approved distributor and service centre.

Includes: 6ft (1.8m) mains supply lead set, Universal battery charger kit, 15 ft (4.6 m) HV output and ground cables and EZ-Thump4 Instruction manual.

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This unit is the EZ-Thump 4kV Model - 500j with 15ft HV output and ground cables.

Order an EZ-Thump configured to your specific needs. To determine the catalog number, fill in the alpha characters with the corresponding numbers from the detailed options. Example: to order a 4-kV EZ-Thump with 15 ft output and ground cables, 14 mm male MC with vise grip cable termination, hand cart and sheath, request catalog number  EZT4 - 15 T2 C H.

The Megger EZ-Thump (originally manufactured as the Seba EZ-Thump) is the compact and light weight, battery or mains powered solution for the fault location in MV or LV cables. It presents the ideal supplement for a satellite-based concept in areas of lower distribution density and failure rate, where fast reaction, weight, size and economy are the driving factors. The system requires no adjustments and need only to be operated by a rotary encoder.

Due to their rugged yet portable enclosure, they are ideally suited either for use in a “satellite” fault locating concept for remote areas that may have less frequent faults, when ease of operation, light weight and economics are important, or for hard to access inner city locations.

On-board is a TDR with a 7.6 km range and arc reflection at 4 kV for pre-locating. For pinpointing,  EZ-Thump offers a surge energy of 500 J, d.c. testing for breakdown detection and insulation resistance measurement. The units are operated from line or the internal battery. They can fit in the boot of a car, making them ideal for a flexible quick response fault finding strategy.


Compact, light and rugged field instruments.
Battery and AC line operation.
Automatic end-of-cable and fault locating.
4 kV or 12 kV output versions available.
Transflective colour display.
ARM® prelocation.
Fault pinpointing (Thumping).
Optional sectionalizing software.

Megger EZ-Thump Product Video

Megger EZ-Thump4 Specifications
Output 0 - 4 kV, 35 mA DC (EZ-THUMP4)
0-12 kV, 12 mA DC (EZ-THUMP12).
TDR Range: 25000 ft (7.6 km)
Sampling Rate: 100 MHz
Resolution: 2.5 ft @ 250 ft/fs
0.8 m @ 80 m / fs.
Arc Reflection 0 - 4 kV or 0 - 12 kV (model dependent).
Pinpoint Fault Location
Surge 0 - 4 kV @ 500 J (EZT4)
0 - 12 kV @ 500 J (EZT12).
Impulse Sequence 10 seconds
Single shot.
Type 5.7" (14.48 cm) transflective TFT Colour LCD - 640 x 480 pixels.
Trace Number 1000.
Port Type USB.
Types 15 ft (4.6 m) HV flexible shielded cable with MC connector and hotline clamp
HV return with hotline clamp
15 ft (4.6 m) ground/earth cable with hotline clamp
6 ft (1.8 m) mains supply lead set (US/SCHUKO/UK).
Battery Internal 24 V NiMH battery 5AH approx 30 mins or surge/thumping approx 3 hours recharge time
100-240 V AC - 24 V DC charger with connection lead set (US/SCHUKO/UK).
AC Line 100 - 230V AC ± 50/60 Hz.
Functions Emergency stop
Key switch interlock
Auto time out.
General Specifications
Operating Temperature -4 to 122°F (-20 to +50°C).
Storage Temperature -12 to 160°F (-25 to +70°C).
Rating IP54.
Weight 71lbs (32 kgs).
Dimensions 14 x 11 x 21" (35.5 x 28 x 53.3 cm).
Megger EZ-Thump4 warranty One-year.

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Megger EZ-THUMP4 c/w 15 ft Cables

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