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Red handheld tester with 3.5 inch color touch LCD screen

ETCR

ETCR 8100B Transformer Core Earth Current Tester 3.5" Color Touch LCD

SKU CH-RTJP-0356S MPN 8100B

Measures transformer core grounding and leakage current from 0.00 mA to 100 A with a 3.5 inch color touch LCD and 80 mm clamp

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Measures transformer core earth current up to 100A without disconnecting circuits
  • 5 inch color touch LCD shows real-time magnitude and waveform
  • Magnetic shielding core gives strong anti-interference performance
  • 80mm x 80mm CT clamps 96mm flat steel or 80mm cable
  • Touch and button dual operating modes with alarm threshold setting

Transformer Core Earth Current Tester

The ETCR 8100B is a specialised electrician tool designed for online measurement of transformer core grounding and leakage current in electrical power systems. It operates without disconnecting the tested circuit, providing real-time magnitude and waveform display on a 3.5-inch color touch LCD. The clamp features an 80mm by 80mm CT size constructed from magnetic shielding material for strong anti-interference performance.

Suited for live power-system diagnostics

This instrument suits technicians who need to clamp round cables up to 80mm or flat steel grounding bars up to 96mm by 4mm while the system remains energised. It offers dual touch and button operation with configurable alarm thresholds for immediate indication. Buyers requiring an included power source or an English manual in the box should look elsewhere, as batteries are excluded and documentation must be requested separately.

0.00mA to 100A measurement range

The single specification that determines suitability is the current measurement span of 0.00mA to 100A, which defines the tester's capability for both minute leakage detection and substantial fault currents. Verifying that this range covers the expected values in your specific transformer installation confirms whether the 8100B is the correct part for the job.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $250.99
Pricier than about 83% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameETCR
Model name8100B
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

How do I install the ETCR 8100B and what step is often missed?

Clamp the CT jaws around the F80mm cable or 96mm×4mm flat steel grounding wire without disconnecting the circuit; the step often missed is purchasing AA batteries locally because air shipping rules prevent them from being included in the box.

What maintenance or replacement will the ETCR 8100B need later?

The only recurring maintenance is replacing the AA batteries when the 3.5-inch color touch LCD dims; the magnetic-shielding CT core and the instrument housing have no user-serviceable parts.

What limit appears first during sustained use of the ETCR 8100B?

The measurement range tops out at 100A, so continuous currents above that level cannot be displayed and will trigger the alarm critical value indication before any thermal limit is reached.

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