Fluke 3665021, Insulation Resistance Tester ,1550C 1TΩ CAT III 1000 V, CAT IV 600 V

Fluke

Product Information

Tester Type:
Insulation Resistance Tester
Display Type:
LCD
Dimensions:
277 x 269 x 160mm
Weight:
3.7kg
Safety Category:
CAT III 1000 V, CAT IV 600 V
Safety Category Level:
CAT III, CAT IV
Safety Category Voltage:
600 V, 1000 V
Model Number p:
1550C
Maximum Insulation Resistance Measurement:
1TΩ
Height:
160mm
Power Source:
Battery
Width:
269mm
Length:
277mm
Battery Life:
750 Tests
Minimum Operating Temperature:
-20°C
Maximum Test Voltage:
5000V
Battery Type:
Rechargeable Lead Acid (Yuasa NP2.8-12)
Minimum Test Voltage:
250V
Maximum Operating Temperature:
+50°C
Test Current:
1 nA → 2 mA
RoHs Compliant
Checking for live stock

The Fluke 3665021 (1550C) is a high-voltage insulation resistance tester designed for professional use in power distribution, industrial equipment maintenance and electrical safety verification. It supports in-depth assessment of motors, cables, switchgear and high-voltage installations. Safety is central to its design, holding CAT III 1000 V and CAT IV 600 V ratings for demanding environments.

Standout Features and Benefits of the Fluke 3665021 Insulation Tester

  • Measures insulation resistance up to 1 TΩ for comprehensive equipment evaluation.
  • Multiple selectable test voltages from 250 V to 5 kV for flexible diagnostics.
  • CAT III 1000 V and CAT IV 600 V safety ratings for high-energy installations.
  • Automatic resistance calculation and leakage current display for accurate reporting.
  • Capable of performing ramp diagnostics, polarisation index and dielectric absorption ratio.
  • Large digital display for clear viewing during field testing.

Benefits for Maintenance and Reliability Work

The Fluke 1550C helps technicians identify insulation degradation early, reducing unplanned downtime and improving asset reliability. Its extended test voltage range makes it suitable for heavy-duty industrial systems. The tester’s stable output and intuitive interface enable consistent results even in large-scale preventative maintenance programs.

Where the 1550C Delivers Best Results

  • This insulation tester is commonly used in power distribution networks, industrial machinery checks, transformer testing, and verifying long cable runs.
  • It performs well in environments where high-voltage insulation integrity is critical, such as manufacturing plants, utilities, motor repair facilities and facilities undergoing periodic safety audits.

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Contains SVHC - Lead - CAS No. 7439-92-1(Technical Reference)
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Fluke 1555 and 1550C Insulation Resistance Testers Technical Data(Technical Reference)

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FAQs

Yes. We ship 3665021 Internationally to many countries around the world.
Yes. You can also search 3665021 on website for other similar products.
We accept all major payment methods for all products including ET16938857. Please check your shopping cart at the time of order.
We use our internationally recognized delivery partners UPS/DHL. Collection of ET16938857 can also be arranged for the customer by international shipments through contacting our customer support team. Additionally, you can also search"Fluke" products on our website by using Enrgtech's Unique Manufacturing Part Number ET16938857.
You can order Fluke brand products with 3665021 directly through our website or call us at +44 (0) 3303 800 157 or email our support team at sales@enrgtech.co.uk.
Yes. Our products in Insulation Testers category are shipped in lowest possible time.
You will get a confirmation email regarding your order of Fluke 3665021, Insulation Resistance Tester ,1550C 1TΩ CAT III 1000 V, CAT IV 600 V. You can also check on our website or by contacting our customer support team for further order details on Fluke 3665021, Insulation Resistance Tester ,1550C 1TΩ CAT III 1000 V, CAT IV 600 V.