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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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Yokogawa Insulation Testers

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2406E Series of Analog Insulation Tester

2406E Series of Analog Insulation Tester - Yokogawa


The 2406E Analog Insulation Tester:

  • Analog models with two and three rating
  • AC voltage measurement
  • Automatic discharge
  • Sky blue EL backlight
  • Increased safety (covered battery charger)

MY10 Series of Analog Insulation Testers

MY10 Series of Analog Insulation Testers - Yokogawa


The MY10 Analog Insulation Tester:

  • Analog models with single rating
  • AC voltage measurement
  • Automatic discharge
  • A wide choice of accessories-Designed for shared use with the MY40

MY40 Digital Insulation Tester

MY40 Digital Insulation Tester - Yokogawa

The MY40 Digital Insulation Tester:

  • Digital model with 4 voltage/resistance ratings
  • Multifunction
    Insulation resistance, AC voltage and conductor resistance measurement
    Insulation test mode: Comparator, memory, auto-hold and discharge functions
    All test modes: Live-line alarm (excluding AC voltage measurement), battery check and automatic power-off
  • Easy-to-view, fluctuation-free display
  • Double-action safety mechanism
  • Weight including main unit and batteries only, excluding accessories


2404 Series Hand-Crank Insulation Testers - Yokogawa


The Yokogawa 2404 insulation tester is a reliable, hand-driven insulation tester using a DC-DC converter.

  • Continuity test: 0-500Ω (only in 2404-14)
  • Voltage measurement  (except 2404-22)
  • Excellent legibility – easy to read
  • Black indicator scale with white color graduations and marks
  • Shock and heat-resistant ABS case
  • Guard terminal in all models
  • Light weight and compact size