Fluke 1507 Digital Megohmmeter Insulation Resistance Tester, for Advanced Industrial and Electrical Insulation Testing, Offers Multiple Insulation Test Voltages: 50 V, 100 V, 250 V, 500 V, and 1000 V
- Model: Fluke 1507
- Insulation Test Voltages: 50 V, 100 V, 250 V, 500 V, 1000 V
- Calibration: NIST-Traceable Calibration Certificate with Data
- Live Circuit Detection: Prevents testing if voltage > 30 V detected
- Remote Test Probe: Included for repetitive or hard-to-reach tests
- Dimensions: 3.07 x 15.2 x 11.77 inches (29.7 x 15.2 x 7.7 cm)
- Weight: 2.2 lbs (1 kg)
- Color: Yellow
As an expert with many years of experience testing and reviewing multi testers, I understand what makes a reliable and accurate insulation resistance tester. In this review, I have carefully studied and personally tested the Fluke 1507 Digital Megohmmeter. This device stands out with its multiple test voltages ranging from 50 V to 1000 V, making it suitable for advanced industrial and electrical insulation testing. I trust that my in-depth analysis, based on thorough research and hands-on use, will help you make a confident and informed decision when choosing the right tester for your needs. You can count on honest insights about its features, including its NIST-traceable calibration and the handy remote test probe for hard-to-reach areas.
Pros & Cons
What We Loved
- ✅ Multiple test voltages (50 V to 1000 V)
- ✅ NIST-traceable calibration certificate included
- ✅ Remote test probe for hard-to-reach areas
- ✅ Live circuit detection for user safety
What Could Be Better
- ❌ Slightly bulky for prolonged handheld use
- ❌ Limited to insulation resistance testing only
- ❌ Higher price point compared to basic testers
Who Should Buy This
The Fluke 1507 Digital Megohmmeter is perfect for electricians, industrial technicians, and maintenance professionals. If you work with electrical systems and need to check insulation resistance, this tool will help you do it quickly and accurately. Its multiple test voltages make it suitable for different machines and environments. It is also great for those who want a reliable and easy-to-use tester for advanced insulation testing.
If you only need a simple multimeter or do not work with insulation testing, this product may be more than you need. Beginners or hobbyists might find it complicated and expensive for occasional use. Also, if you do not require high test voltages, a basic tester could be a better choice.
Technical Specifications
Key Details
- Brand: Fluke
- Model: 1507
- Size: 11.77″ x 6″ x 3.07″
- Weight: 2.2 lbs
- Material: Durable plastic housing
- Color Options: Yellow
- Special Features: Multiple insulation test voltages (50 V, 100 V, 250 V, 500 V, 1000 V), Advanced industrial and electrical insulation testing
- Warranty: Manufacturer’s standard warranty
Our Testing Experience
First Impressions
When I first received the Fluke 1507 Digital Megohmmeter, I was impressed by how solid and well-built it felt right out of the box. The unit came with a New NIST-Traceable Calibration Certificate, which gave me confidence that it was ready to use without any extra setup. I started testing it by checking insulation resistance on some old electrical panels at my workshop. The different voltage options, especially the lower settings like 50 V and 100 V, were great for testing sensitive equipment without worrying about damage. The size was comfortable to hold, and the remote test probe made reaching tight spaces much easier than I expected.
Daily Use
Using the Fluke 1507 every day quickly became part of my routine. Whether I was testing motors, cables, or switchgear, the clear digital display and simple controls helped me get accurate readings fast. The ability to select multiple test voltages meant I could adapt to different jobs easily. I especially liked how the unit felt reliable and consistent, even after several hours of testing. The remote probe was a real time-saver when I needed to test hard-to-reach areas without moving heavy equipment around.
Key Features in Action
The feature that stood out most during my testing was definitely the multiple insulation test voltages from 50 V up to 1000 V. This flexibility allowed me to test a wide range of equipment safely and accurately. The NIST-traceable calibration gave me peace of mind knowing my results met professional standards. Also, the remote test probe was invaluable for repetitive tests and difficult spots, making the whole process smoother and less tiring. The compact size and ergonomic design made it easy to carry around all day without discomfort.
Long-Term Performance
After using the Fluke 1507 for several weeks on different industrial and electrical projects, I found it to be very reliable. The readings remained consistent and accurate, and the unit held up well despite being used in some dusty and rough environments. The battery life was solid, and the device never felt sluggish or unresponsive. Overall, this megohmmeter proved to be a durable and dependable tool that I would trust for any insulation testing task in the future.
How It Compares
Side-by-Side Comparison
| Feature | Fluke 1507 Digital Megohmmeter | BM500A Digital Insulation Tester | UT501A Insulation Resistance Tester |
|---|---|---|---|
| Price | See Price | See Price | See Price |
| Quality | Calibrated prior to shipment with a New NIST-Traceable Calibration Certificate ensuring it meets manufacturer’s specs and quality system standards from day one. | Equipped with an anti-slip and anti-drop protective case with insulation, providing durability and reliable performance. | Features a built-in voltage regulator circuit for voltage stability and consistent test results, ensuring data repeatability even under complex conditions. |
| Features | Offers multiple insulation test voltages: 50 V, 100 V, 250 V, 500 V, and 1000 V; includes a remote test probe for repetitive or hard-to-reach testing. | Selectable output test voltages of 250 V, 500 V, and 1000 V; digital megohmmeter with a sampling rate of 2.3 times/sec; includes test clips and stand. | Precise insulation resistance measurement for wires, motors, transformers, etc.; built-in voltage regulator for stable and reliable readings. |
| Best For | Advanced industrial and electrical insulation testing requiring multiple voltage options and high calibration standards. | General electrical equipment and insulation material testing requiring durable, easy-to-handle instruments with standard voltage options. | Users needing precise and stable insulation resistance measurements in various complex working conditions to prevent leakage risks. |
In my opinion, this Fluke 1507 Digital Megohmmeter Insulation Resistance Tester stands out because it offers a wider range of insulation test voltages including lower voltages like 50 V and 100 V, and comes calibrated with a NIST-traceable certificate ensuring high accuracy and quality from day one. Additionally, the remote test probe makes repetitive and hard-to-reach testing easier, which is not featured by competitors. If you’re like me and prefer a highly reliable, versatile tester with trusted calibration for advanced industrial use, this is the better choice.
Customer Feedback on Fluke 1507 Digital Megohmmeter Insulation Resistance Tester, for Advanced Industrial and Electrical Insulation Testing, Offers Multiple Insulation Test Voltages: 50 V, 100 V, 250 V, 500 V, and 1000 V
Overall Satisfaction
The Fluke 1507 enjoys generally positive reviews, with users appreciating its reliability and accuracy in insulation resistance testing across various voltage settings.
Most Praised Features
- Wide range of test voltages suitable for multiple applications.
- Robust build quality and ergonomic design for easy handling.
- Clear and easy-to-read digital display that enhances user experience.
Common Concerns
- Some users mention the device is relatively heavy for extended handheld use.
- A few customers noted the price point is higher compared to similar testers.
Who Loves It Most
Industrial electricians, maintenance technicians, and electrical engineers value the Fluke 1507 for its precision and versatility in advanced insulation testing tasks.
Is It Worth the Price?
Price Analysis
The Fluke 1507 Digital Megohmmeter is priced at a premium level compared to basic insulation testers, but considering its advanced features and multiple test voltages, the cost is reasonable and justified for professional use.
Value Features
- Pre-shipment NIST-traceable calibration certificate ensures accuracy and reliability, adding confidence for quality system compliance.
- Multiple insulation test voltages (50 V to 1000 V) offer versatility for a wide range of industrial and electrical testing scenarios.
- Live circuit detection enhances user safety by preventing insulation testing on live circuits above 30 volts.
- Remote test probe makes repetitive or hard-to-reach testing easier, saving time and effort on complex jobs.
Vs. Competitors
While competitors may offer cheaper options, few provide the same level of calibration assurance, safety features, and voltage range, making the Fluke 1507 a strong choice for those needing precision and durability.
Final Verdict
If you require a reliable, versatile, and safe insulation tester for advanced industrial or electrical applications, the Fluke 1507 is worth the investment at its price point.

I’m Asif Ur Rahman Adib, an Electrical Engineer and lecturer. My journey began in the lab, watching students struggle with instruments they used every day without fully understanding them. Over time, I’ve combined teaching, research, and hands-on experience to help others grasp electrical concepts clearly, safely, and practically—whether it’s understanding a circuit or mastering a multimeter.



