Fluke 1507/1503 Insulation Resistance Testers

Fluke 1507/1503 Insulation Resistance Testers

Fluke 1507/1503 Insulation Resistance Testers – Product Description and Specifications

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Product Description Fluke 1507/1503 Insulation Resistance Testers

The Fluke 1507 and 1503 Insulation Resistance Testers are compact, rugged, and highly reliable tools designed for insulation testing in electrical systems. With multiple test voltages and wide resistance ranges, they are ideal for troubleshooting, commissioning, and preventative maintenance. The 1507 model includes additional time-saving features like Polarization Index (PI), Dielectric Absorption Ratio (DAR), and Pass/Fail comparator functions, making it a more advanced choice for demanding applications.

Both models are equipped with a remote test probe to facilitate measurements in hard-to-reach places, and user safety is enhanced with features like automatic voltage detection, capacitive voltage discharge, and CAT IV 600 V safety ratings.

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Key Features Fluke 1507/1503 Insulation Resistance Testers

• Insulation resistance range:

  • 1507: 0.01 MΩ to 10 GΩ

  • 1503: 0.1 MΩ to 2000 MΩ

• Insulation test voltages:

  • 1507: 50 V, 100 V, 250 V, 500 V, 1000 V

  • 1503: 500 V, 1000 V

• Automatic Polarization Index (PI) and Dielectric Absorption Ratio (DAR) for enhanced insulation diagnostics (1507 only)

• Comparator function (Pass/Fail mode) for efficient repeat testing (1507 only)

• Remote test probe for easy access in tight or awkward locations

• Live circuit detection blocks insulation tests if >30 V is detected to ensure user safety

• Automatic capacitive voltage discharge provides additional user protection

• AC/DC voltage measurement: 0.1 V to 600 V with 2% + 3 accuracy

• Continuity test with 200 mA current

• Resistance measurement range: 0.01 Ω to 20.00 kΩ with 1.5% + 3 accuracy

• Large backlit display for easy viewing in low-light conditions

• Auto power-off to save battery life

• Rugged and durable design with IP40 rating and 1-meter drop resistance

• Accepts optional Fluke TPAK magnetic hanging strap for hands-free operation

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Measurement and Safety Specifications

• AC/DC voltage range: up to 600 V, resolution: 0.1 V

• Frequency range: 50 Hz to 400 Hz

• Input impedance: 3 MΩ nominal

• Resistance ranges: 20.00 Ω to 20.00 kΩ with resolution from 0.01 Ω to 0.01 kΩ

• Short-circuit current for continuity testing: >200 mA

• Open circuit test voltage: >4 V and <8 V

• Insulation test current: nominal 1 mA

• Accuracy of insulation resistance measurement:

  • 50 V, 100 V: ±(3% + 5)

  • 250 V, 500 V, 1000 V: ±(1.5% + 5) up to 2000 MΩ, ±(10% + 3) above 2000 MΩ

• Max capacitive load handling: up to 1 µF

• Discharge time for 1 µF capacitor: <0.5 s

• Over-voltage protection: 600 V rms or DC

• Operating altitude: 2000 m (CAT IV 600 V), 3000 m (CAT III 600 V)

• Storage altitude: up to 12,000 m

• Operating temperature: -20 °C to 55 °C

• Storage temperature: -40 °C to 60 °C

• Relative humidity:

  • 0% to 95% @ 10–30 °C

  • 0% to 75% @ 30–40 °C

  • 0% to 40% @ 40–55 °C

• Shock and vibration: 1-meter drop-tested and MIL-PRF-28800F Class 2 vibration compliant

• Safety compliance: ANSI/ISA 61010-1, CSA, IEC/EN 61010-1, CAT IV 600 V certified

• EMC compliance: EN 61326-1

• IP rating: IP40

• Overload capability: up to 110% of range

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Power and Battery

• Powered by four AA alkaline batteries (NEDA 15A or IEC LR6)

• Battery life:

  • At least 1,000 insulation tests (1000 V into 1 MΩ, 5s ON / 25s OFF cycle)

  • At least 2,500 resistance measurements (1 Ω, same cycle)

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Physical Specifications

• Dimensions: 5.0 cm (H) × 10.0 cm (W) × 20.3 cm (L) / 1.97 in × 3.94 in × 8.00 in

• Weight: 550 g / 1.2 lbs

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Included Accessories

• TL224 Test Leads

• TP74 Test Probe

• Red and black alligator clips (PN 1958654 and PN 1958646)

• Protective holster

• Remote probe

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Summary

The Fluke 1507 and 1503 Insulation Resistance Testers are robust, user-friendly tools essential for electricians and maintenance professionals dealing with high-voltage insulation testing. The 1507 model offers more advanced capabilities such as multiple test voltages, DAR/PI calculations, and a Pass/Fail mode, making it ideal for high-accuracy applications. The 1503 offers reliable basic insulation testing functions in a simpler package.

Key Benefits:

• Accurate and versatile insulation testing

• Remote probe for hard-to-reach locations

• Enhanced safety and durability features

• CAT IV 600 V rated for high safety assurance

• Ideal for industrial, commercial, and residential electrical systems