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Tokyo Precision Engineering | ¥180B+ Order Milestone

Precision Industrial & Transit Testing & Earth Resistance Instruments

RailJet Co., Ltd. (Tokyo, Japan) delivers precision Earth Resistance Clamp Testers, Phase Volt-Ampere Meters, 1000A True RMS Multimeters, and Soil Resistivity measurement instruments built to strict Japanese quality and international IEC standards.

JIS C 1302 & IEC Compliant
🇯🇵Made in Japan (日本製)
Tokyo Calibration Certified
Featured Flagship Model
RR / R1+ / R2 / R3+
RailJet R1+ Clamp Earth Resistance Tester
0.010Ω - 1200Ω

RailJet Clamp Earth Resistance Tester (Model: R1+)

Automatic interference detection, 4-digit black screen LCD, 300 sets memory, non-contact loop resistance test without auxiliary spikes.

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Industry Legacy
20–25 Yrs
Continuous Engineering Excellence
Global Order Scale
¥180B+
International Transit Pipeline
Tokyo Engineering Team
20+
Precision Specialists & R&D Staff
Testing Reliability
99.99%
Tokyo Calibration Certified
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RailJet Gallery Photo 1
Product Portfolio

Comprehensive Testing & Measurement Instruments

Engineered from our technical manuals and catalogue for power grids, signaling departments, and maintenance depots.

Earth Clamp Testers

Loop resistance from 0.010Ω to 1200Ω and leakage current testing up to 20A without opening ground down-conductors.

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Phase Volt-Ampere Meters

Double clamp meters with 0.0°~360.0° phase angle, active/reactive power (0~12kW/kvar), and power factor (-1~+1).

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1000A Digital Multimeters

1700V DC high voltage, 1000A True RMS, LowZ anti-ghost voltage, 60MΩ resistance, and inrush peak current capture.

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Soil Resistivity Testers

Wenner 4-pole method soil resistivity calculation (0.00Ωm~9999kΩm) and 3/4-wire precision grounding grid verification.

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7 Official Products from Catalog

Our 7 Official Testing Products

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RailJet Clamp Earth Resistance Tester (Model: RR)
Earth Clamp Testers
Model: RRRALIJET CLAMP EARTH RESISTANCE MENU.pdf

RailJet Clamp Earth Resistance Tester (Model: RR)

High-precision clamp ground loop resistance tester engineered with authentic Japanese precision technology (Made in Japan) for transit traction, power grid substations, and signaling earth pits.

✓ Model: RR
✓ Resistance: 0.010Ω - 200Ω
IEC / ISO CertifiedView Specs →
RailJet Clamp Earth Resistance & Current Tester (Model: RR+)
Earth Clamp Testers
Model: RR+RALIJET CLAMP EARTH RESISTANCE MENU.pdf

RailJet Clamp Earth Resistance & Current Tester (Model: RR+)

Dual-capability clamp ground loop resistance and AC leakage current tester with fast digital filtering and noise suppression for substation earth grid monitoring.

✓ Model: RR+
✓ Resistance: 0.010Ω - 200Ω
IEC / ISO CertifiedView Specs →
RailJet Clamp Earth Resistance & Leakage Tester (Model: R1)
Earth Clamp Testers
Model: R1RALIJET CLAMP EARTH RESISTANCE MENU.pdf

RailJet Clamp Earth Resistance & Leakage Tester (Model: R1)

Extended-range clamp ground resistance and leakage current tester with 0.010Ω - 500Ω loop measurement range designed for transit OHE and traction substations.

✓ Model: R1
✓ Resistance: 0.010Ω - 500Ω
IEC / ISO CertifiedView Specs →
RailJet Clamp Earth Resistance Tester (Model: R1+)
Earth Clamp Testers
Model: R1+RALIJET CLAMP EARTH RESISTANCE MENU.pdf

RailJet Clamp Earth Resistance Tester (Model: R1+)

Flagship high-precision clamp ground loop resistance & leakage current tester engineered with authentic Japanese precision technology (Made in Japan) with luxury high-contrast black screen display.

✓ Model: R1+ (Made in Japan / 日本製)
✓ Black Screen Luxury Display
IEC / ISO CertifiedView Specs →
RailJet Ground Pile Clamp Earth Resistance Tester (Model: R2)
Earth Clamp Testers
Model: R2ES3022 Series user manual.pdf

RailJet Ground Pile Clamp Earth Resistance Tester (Model: R2)

Multi-functional 2.4-inch color LCD ground pile clamp tester supporting Clamp Method, 2/3/4-Wire Method, AC Current, and Ground Voltage testing with USB PC software.

✓ Model: R2
✓ 2.4-inch Color LCD Display
IEC / ISO CertifiedView Specs →
RailJet Multi-Functional Soil Resistivity & Grounding Tester (Model: R3)
Soil Resistivity Testers
Model: R3ES3022 Series user manual.pdf

RailJet Multi-Functional Soil Resistivity & Grounding Tester (Model: R3)

Advanced ground pile clamp & soil resistivity tester supporting Wenner 4-pole calculation, 2/3/4-wire earth resistance, selection method, and leakage current measurement.

✓ Model: R3
✓ Soil Resistivity: 0.00Ωm ~ 9999kΩm
IEC / ISO CertifiedView Specs →
RailJet Advanced Smart Soil Resistivity & Clamp Tester (Model: R3+)
Soil Resistivity Testers
Model: R3+ES3022 Series user manual.pdf

RailJet Advanced Smart Soil Resistivity & Clamp Tester (Model: R3+)

Top-tier flagship smart clamp ground pile & soil resistivity tester featuring integrated Bluetooth Mobile App connectivity, USB PC software, Wenner 4-pole calculation, and FFT digital filtering.

✓ Model: R3+ (Flagship)
✓ Bluetooth Mobile App + USB Port
IEC / ISO CertifiedView Specs →
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Multi-Sector Infrastructure Presence

Key Industry & Client Sectors

RailJet Pvt Ltd supplies high-precision testing instruments and electrical safety solutions across power substations, metro transit systems, rolling stock assembly units, and heavy industrial plants.

High-Speed Rail & Shinkansen Networks

Traction Power, OHE & Substation Earth Pits

Metro & Urban Transit Systems

Depots, 750V/1500V DC Traction Systems

Power Grid & EHV Substations

Grounding Grids, Surge Earth & Switchyards

Heavy Rolling Stock & Loco Sheds

Inrush Current, Motors & Traction Inverters

Renewable Energy & Solar Mega-Grids

Soil Resistivity Surveys & Earth Loop Arrays

Heavy Industrial Engineering Plants

Precision Plant Grounding & Insulation Safety

Vendor & Procurement Desk

Looking to request quotations for division tenders or register as an approved vendor? Connect with our team.

Need Direct Factory Quotation or Calibration Specs?

Connect with our Tokyo corporate headquarters or contact our global instrumentation distribution desk.