Fluke 1503 Insulation Resistance Tester handles all the basic insulation testing needs
The Fluke 1503 is a great choice for basic residential and commercial electrical insulation testing. This rugged, compact tool fits in the palm of your hand. The 1503 is the same form factor as the Fluke 1507 but with a few less features. You can count on it to handle the most common tests at a most affordable price. Additional features, like the remote probe, reduce the time needed to perform repetitive testing.
Other useful capabilities:
Measures AC/DC voltage from 0.1 V to 600 V
Includes auto-discharge of capacitive voltage for added user protection
Provides lo-ohms earth-bond continuity (200 mA)
Simplifies repetitive or hard-to-reach testing with the remote test probe
Saves battery power with auto power off
Presents results on a large, backlit display
Features CAT IV 600 V overvoltage category rating
Comes with remote probe, test leads, test probes, alligator clips, and one-year warranty
Accepts optional Fluke TPAK magnetic hanging system to free your hands for other work
Runs on four AA alkaline batteries (LR6) for at least 1000 insulation tests
Specifications: Fluke 1503 Insulation Resistance Meter
AC/DC Voltage Measurement
Accuracy
Range
600.0 V
Resolution
0.1 V
50 Hz to 400 Hz ±(% of Rdg + Digits)
±(2% + 3)
Input impedance
3 MΩ (nominal), < 100 pF
Common mode rejection ratio (1 kΩ unbalanced)
> 60 dB at DC, 50 or 60 Hz
Overload protection
600 V rms or DC
Earth Bond Resistance Measurement
Range/Resolution
20.00 Ω
0.01 Ω
200.0 Ω
0.1 Ω
2000 Ω
1.0 Ω
20.00 kΩ
0.01 kΩ
Accuracy
±(1.5% + 3)
Overload protection
2 V rms or DC
Open circuit test voltage
> 4.0 V, < 8 V
Short circuit current
> 200.0 mA
Insulation Specifications
Measurement range
0.01 MΩ to 2000 MΩ
Test voltage
500 V, 1000 V
Test voltage accuracy
+ 20%, - 0%
Short circuit current
1 mA nominal
Auto discharge
Discharge time < 0.5 second for C = 1 µF or less
Live circuit indicator
Inhibit test if terminal voltage > 30 V prior to initialization of test
Maximum capacitive load
Operable with up to 1 µF load
Measure accuracy
500 V
±(1.5% + 5)
1000 V
±(1.5% + 5) to 2000 MΩ, ±(10% + 3) above 2000 MΩ
General Specifications
Maximum voltage applied to any terminal:
600 V AC rms or DC
Storage temperature
-40°C to 60°C (-40°F to 140°F)
Operating temperature
-20°C to 55°C (-4°F to 131°F)
Temperature coefficient
0.05 x (specified accuracy) per °C for temperatures < 18°C or > 28°C (< 64°F or > 82°F)
Relative humidity
0% to 95% @ 10°C to 30°C (50°F to 86°F)
0% to 75% @ 30°C to 40°C (86°F to 104°F)
0% to 40% @ 40°C to 55°C (104°F to 131°F)
Vibration
Random, 2 g, 5-500 Hz per MIL-PRF-28800F, Class 2 instrument
Shock
1 meter drop per IEC 61010-1 2nd Edition (1 meter drop test, six sides, oak floor)
Electromagnetic compatibility
In an RF field of 3 V/M, accuracy = specified accuracy (EN 61326-1:1997)
Safety
Complies with ANSI/ISA 82.02.01 (61010-1) 2004, CAN/CSA-C22.2 NO. 61010-1-04, and IEC/EN 61010-1 2nd Edition for measurement category IV 600 V (CAT IV)
Certifications
CSA per standard CSA/CAN C22.2 No. 61010.1-04; TUV per standard IEC/EN 61010-1 2nd Edition
Batteries
Four AA batteries (NEDA 15A or IEC LR6)
Battery llife
Insulation test use:
Tester can perform at least 1000 insulation tests with fresh alkaline batteries at room temperature. These are standard tests of 1000 V into 1 MΩ with a duty cycle of 5 seconds on and 25 seconds off.
Resistance measurements:
Tester can perform at least 2500 earth bond resistance measurements with fresh alkaline batteries at room temperature. These are standard tests of 1 Ω with a duty cycle of 5 seconds on and 25 seconds off.
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on all orders
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
