EN31-38
Insulation Testers and
Earth Ground Testers
With a 5000 V MegOhmMeter for industrial-strength insulation testing
and a range of compact hand-held instruments, we offer a solution
for every troubleshooting and preventive maintenance application.
Two of the digital hand-held insulation testers also include full-featured
multimeters.
The Fluke Earth Ground Testers can perform all four types of earth
ground measurement, including stakeless testing with earth ground
loop resistances using only clamps.
31
Insulation Tester
Selection Guide
InstallationTest Functionality
Test voltages
Insulation Resistance Test Range
Polarization Index/Dielectric Absorption Ratio
Auto Discharge
Time Ramp test (Breakdown)
Pass/Fail Comparison
Estimated Number of
Insulation resistance Tests
Voltage > 30V Warning
Memory
Remote Test Probe
Lo Ohms
Display
Continuity
Multimeter Functionality
AC/DC Volts
Current
Resistance
Temperature (contact)
Lo-Pass Filter
Capacitance
Diode Test
Frequency
MIN/MAX
Other
Hold/Lock
Backlight
1577
1587
1587T
1503
1507
1550B
500V, 1000V
0.1MΩ - 600MΩ
50V, 100V, 250V, 500V,
1000V
0.01 MΩ - 2GΩ
50V, 100V
500V, 1000V
0.01MΩ - 100MΩ
0.1MΩ - 2GΩ
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50V, 100V, 250V, 500V,
1000V
0.01MΩ - 10GΩ
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250V, 500V, 1000V,
2500V, 5000V
200KΩ - 1TΩ
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1000
1000
1000
1000
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1000
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Digital LCD
Digital LCD
Digital LCD
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Digital LCD
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Digital LCD
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(200mA)
(200mA)
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Battery
Save
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3
4 AA (NEDA 15A or
IEC LR6)
3
4 AA (NEDA 15A or
IEC LR6)
1
4 AA (NEDA 15A or
IEC LR6)
1
4 AA (NEDA 15A or
IEC LR6)
●
(Fluke View® Forms
Basic)
2
Rechargeable
Buy a Fluke 1587 Combo Kit and save
10%
Fluke 1587/ET
Save
10%
32
3
4 AA (NEDA 15A or
IEC LR6)
Digital LCD / Analog
Bar Graph
●
Software
Warranty (in years)
●
(99 locations)
Fluke 1587/MDT
Fluke 1587/ET Advanced Electrical
Troubleshooting Kit
Fluke 1587/MDT Advanced Motor
& Drive Troubleshooting Kit
This kit contains:
•Fluke 1587 Insulation Multimeter
•Fluke 62 Mini Infrared Thermometer
•i400 Current Clamp
This kit contains:
•Fluke 1587 Insulation Multimeter
•Fluke 9040 Phase Rotation Indicator
•i400 Current Clamp
Perform insulation tests with the Fluke
1587 plus a wide-range of DMM tasks with
confidence and ease. Use the i400 with your
Fluke 1587 to accurately measure AC current
without breaking the circuit. Check for hot
spots and measure temperature with the
Fluke 62 Mini non-contact thermometer.
Perform insulation tests with the Fluke
1587 plus a wide-range of DMM tasks with
confidence and ease. Use the i400 with your
Fluke 1587 to accurately measure AC current
without breaking the circuit. Check the phaserotation of three-phase motors easily and
safely with the Fluke 9040.
1577/1587
Insulation Multimeters
Two powerful tools in one
The Fluke 1587 and 1577 Insulation
Multimeters combine a digital insulation
tester with a full-featured True RMS
digital multimeter in a single compact,
handheld unit, which provides maximum
versatility for both troubleshooting and
preventive maintenance.
Whether you work on motors, generators,
cables, or switch-gear, the
Fluke 1587/1577 Insulation Multimeters
are ideally suited to help you with your
tasks.
The Fluke 1587T is specially designed for
the telecom environment.
Features
Multimeter Features
True RMS Voltage and Current for accurate measurements
Digital display counts
Autorange and manual range for easy testing.
Selectable filter for accurate voltage and frequency measurements on motor
drives
Min Max Recording, Diode test, temperature, capacitance & frequency
measurement for maximum flexibility.
Fluke 1577
1577
●
6000
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Insulation features
User selectable test voltages for many applications
Additional test voltages 50V, 100V, 250V
Special remote control probe for easy and safe measurements
Auto-discharge of capacitive voltage for added user protection
Live circuit detection prevents insulation test if voltage > 30V is detected for
added user protection
Fluke 1587
Fluke 1587T
General features
Auto Power off to save batteries
Large display with backlight
Input Alert to warn for incorrect connections
Continuity
1587
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6000
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1587T
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6000
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Insulation Specifications
Functions
Measurement range
Test voltages
1577
0.1MΩ to 600MΩ
500V, 1000V
Test voltage accuracy
Insulation test current
Auto discharge
+ 20%, -0%
1mA nominal
Discharge time < 0.5s
for C = 1 µF or less
Up to 1 µF load
Maximum capacitive load
1587
0.01MΩ to 2GΩ
50V, 100V, 250V, 500V,
1000V
+ 20%, -0%
1 mA nominal
Discharge time <0.5s
for C = 1 µF or less
Up to 1 µF load
1587T
0.01MΩ to 100MΩ
50V, 100V
+ 20%, -0 %
1 mA nominal
Discharge time <0.5s
for C = 1 µF or less
Up to 1 µF load
Multimeter Specifications
Included Accessories
C101 Rugged, utility hard case
TL224 SureGrip Silicone Test Lead Set
AC285 SureGrip Alligator Clip Set
80BK Integrated DMM Temperature Probe
(Type K)
TP165X Remote Test Probe
Functions
Voltage DC
Voltage AC
Current DC
Current AC
Resistance
Capacitance
Frequency
Temperature
Battery life:
Maximum
1000V
1000V
400mA
400mA
50.0MΩ
9999µF
99.99kHz
-40°C to +537°C
Max. resolution
1 mV
0.1mV
0.01mA
0.01mA
0.1Ω
1 nF
0.01 Hz
0.1°C
Meter: 1000 hrs,
Insulation Test: >1000 tests
1577
± (0.2% + 2)
± (2% + 3)
± (1.0% + 2)
± (2% + 2)
± (1.2% + 2)
-
1587/1587T
± (0.09% + 2)
± (2% + 3)
± (0.2% + 2)
± (1.5% + 2)
± (0.9% + 2)
± (1.2% + 2)
± (0.1% + 1)
± (1% + 10)
Weight: 0.55 kg
Three Year Warranty
Size (HxWxD):
203 mm x 100 mm x 50 mm
Recommended Accessories
Ordering Information
Fluke 1577
Fluke 1587
Fluke 1587T
Insulation Multimeter
Insulation Multimeter
Insulation Multimeter
(for Telecom)
C25
See page 106
i400
See page 102
TPAK
See page 109
L215
See page 101
TL238
See page 100
33
1503/1507 Insulation Testers
Truly portable insulation resistance testers
When you need a low cost solution to
general purpose insulation testing look
no further than the new Fluke insulation
tester range. The Fluke 1507 and 1503
Insulation Testers are compact, rugged,
reliable and easy to use.
The multiple test voltages on both
models make them ideal for many
troubleshooting, commissioning and
preventive maintenance applications.
Additional features like the remote
probe save both time and money when
performing tests.
Features
1503
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User selectable test voltages for many applications
Additional test voltages 50V, 100V, 250V
Special remote control probe for easy and safe measurements
Auto-discharge of capacitive voltage for added user protection
Live circuit detection prevents insulation test if voltage > 30 V
is detected for added user protection
Save both time and money with Automatic calculation of
Polarization Index and Dielectric Absorption Ratio
Auto Power off to save batteries
Large display with backlight
Continuity function (200 mA)
Compare function (pass/fail) for fast repetitive tests
Fluke 1503
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1507
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Fluke 1507
Specifications
Insulation specifications
Insulation test range
Test voltages
Test voltage accuracy
Insulation test current
AC/DC Voltage measurement
Resistance measurement range
Auto discharge
1503
0.1 MΩ to 2 GΩ
500 V, 1000 V
+ 20 %, - 0 %
1mA nominal
600 V (0.1 V resolution)
0.01 Ω to 20 kΩ
Discharge time < 0.5 second
for C = 1 µF or less
Up to 1 µF
> 4V ,< 8V
> 200 mA
Maximum capacitive load
Open circuit test voltage
Short circuit current
Battery life: Insulation Test: > 1000 tests
Size (HxWxD):
203 mm x 100 mm x 50 mm
Weight: 0.55 kg
One Year Warranty
Fluke 1503/1507 Applications
Included Accessories
TP165x
TL224
TP74
1507
0.01 MΩ to 10 GΩ
50 V, 100 V, 250 V, 500 V, 1000 V
+ 20 %, - 0 %
1mA nominal
600 V (0.1 V resolution)
0.01 Ω to 20 kΩ
Discharge time < 0.5 second
for C = 1 µF or less
Up to 1 µF
> 4V ,< 8V
> 200 mA
Remote Test Probe
SureGrip Silicone Test Lead Set
Lantern Tip Test Probe Set
Alligator clips
Ordering Information
Fluke 1503
Fluke 1507
Insulation Tester
Insulation Tester
Insulation test at a
distribution panel
Wiring test in a small
distribution box –
all in one spot
Recommended Accessories
C101
See page 107
34
PAK
See page 109
TLK 225
See page 100
AC285
See page 101
L210
See page 110
1550B MegOhmMeter
Digital insulation testing up to 5000 Volts
The Fluke 1550B is a digital insulation
tester capable of testing switchgear,
motors, generators and cables at up to
5000 V DC. It can be used for a wide range
of tests: from simple spot checks to timed
tests and breakdown tests. Measurement
storage and PC interface software make it
ideal for preventive maintenance.
•Test voltages of 250 V, 500 V, 1000 V,
2500 V, 5000 V
•Capable of testing in 50 V increments
between 250 V and 1000 V, and 100 V
increments between 1000 V and 5000 V
•Measures 0 to 1 Tera-Ohm
•Warning voltage function alerts the
user that line voltage is present and
gives the voltage reading up to 600 V
AC or DC
•Guard system eliminates the effect
of surface leakage current on highresistance measurements
•Large digital/analog LCD shows detailed
measurement data
•Cable or insulation capacitance
•Leakage current
•Ramp function (0-5000 V DC) for
breakdown testing
•Timer 1 to 99 minutes
•Polarization index and dielectric
absorption calculated automatically
•99 memory locations store all
measurements parameters
•Includes Quicklink 1550B Software and
Optical Interface cable
Fluke 1550B
Specifications
Test Voltage (DC)
250V
500V
1000V
2500V
5000V
Short circuit current
Bar graph range
Insulation test voltage accuracy
Induced AC mains current rejection
Charging rate for capacitive load
Leakage current
Capacitance measurements
Live circuit indicator
Timer increments; indicated to within 1 second
Ramp
Range
200kΩ to 5GΩ
5GΩ to 50GΩ
200kΩ to 10GΩ
10GΩ to 100GΩ
200kΩ to 20GΩ
20GΩ to 200GΩ
200kΩ to 50GΩ
50GΩ to 500GΩ
200kΩ to 100GΩ
100GΩ to 1TΩ
greater than 1 mA and less than
2mA
0 to 1TΩ
0% to + 10% at 1mA load current
2 mA maximum
5 seconds per µF
1nA to 2mA
0.01µF to 15.00µF
30V to 600V AC/DC, 50/60Hz
1 to 99 minutes; settable in
1 minute
0% to 100% of selected test
voltage, or until breakdown.
Accuracy (+/- reading)
5%
20%
5%
20%
5%
20%
5%
20%
5%
20%
± (5% + 2nA)
± (15% rdg + 0.03µF)
± (5% + 2V)
Included Accessories
Test leads, 5000 V-rated probes, Alligator clips,
Interface cable
Flukeview Forms Basic, soft carrying case with
water-proof bottom, instruction manual
Ordering Information
Fluke 1550B
MegOhmMeter
Operating Temperature: -20°C to 50°C
Storage Temperature: -20°C to 65°C
Relative humidity: 80% at 31°C,
50% at 50°C
Dust/water resistance: IP40
Operating Altitude: 0 to 2,000 mtrs.
Batteries: 12 volt, lead-acid, rechargeable
Size (HxWxD): 170 mm x 242 mm x 330 mm
Weight: 4 kg (with battery)
Two Year Warranty
FVF-SC2
See page 109
35
1620 Series
Earth Ground Testers GEO
Advanced technology for all your earth
ground testing applications
Fluke 1623
The new Fluke 1620 Series Earth Ground
Testers not only measure ground
resistance using the classic ‘fall of
potential test’ but also enable time
saving testing using the ‘selective’ and
‘stakeless’ methods. ‘Selective’ testing
does not require the electrode under
test to be disconnected during the
measurement, thus increasing safety.
The simple ‘stakeless’ method quickly
checks ground connections using two
current transformers (probes) clamped
around the ground conductor under test.
Offering ‘one-button’ simplicity, the 1623
is an all-in-one earth ground tester, while
the 1625 has extra versatility for more
demanding applications.
Earth ground resistance and soil
resistivity should be measured
when:
•Designing earth ground systems
•Installing new ground system and
electrical equipment
•Periodically testing ground and
lightning protection systems
•Installing large electrical equipment
such as transformers, switchgears,
machines, etc.
Features
Fluke 1625
1623
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One-button measurement concept
3- and 4-pole earth ground measurement
4-Pole soil resistivity testing
2-Pole resistance measurement AC
2-and 4-pole resistance measurement DC
Selective testing, no disconnection of ground conductor (1 clamp)
Stakeless testing, quick ground loop testing (2 clamps)
Measuring frequency 128 Hz
Earth impedance measurement at 55 Hz
Automatic frequency control (AFC) (94 – 128 Hz)
Measuring voltage switchable 20/48V
Programmable limits, settings
Continuity with buzzer
Dust/water resistance
Safety rating
1625
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IP56
CAT II 300 V
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IP56
CAT II 300 V
Specifications
(Check the Fluke web for detailed specifications)
Fluke 1625 kit
Included accessories
Fluke 1623: Protective holster, 2 test leads,
2 alligator clips, users manual
Fluke 1623 Kit: same as above plus stake/reel
Set 4 pole and selective/stakeless clamp set
Fluke 1625: Protective holster, 2 test leads,
2 alligator clips, users manual
Fluke 1625 Kit: same as above plus stake/reel
set 4 pole and selective/stakeless clamp set
Fluke 1623 Kit
Fluke 1625
Fluke 1625 Kit
36
Basic GEO Earth Ground
Tester
Basic GEO Earth Ground
Tester Kit
Advanced GEO Earth
Ground Tester
Advanced GEO Earth
Ground Tester Kit
1625
0 to 300 kΩ
± 5%
20 / 48 V
250 mA
Battery type: 6 x AA alkaline cells
Size (HxWxD): 110 mm x 180 mm x 240 mm
Weight – 1623 Geo: 1.1 kg (including batteries)
1625 Geo: 1.1 kg (including batteries)
Two Year Warranty
Recommended Accessories
Ordering information
Fluke 1623
1623
0 to 20 kΩ
± 5%
48 V
> 50mA
Resistance ranges
Operating error
Test voltage
Short circuit current
EI-1623
EI-1625
Selective/stakeless clamp Selective/stakeless clamp
set for 1623
set for 1625
ES-162P3
Stake/reel set for 3 pole
measurements
ES-162P4
Stake/reel set for 4 pole
measurements
EI-162BN
320mm Split core
transformer for selective
measurements on high
voltage pylons
1621 Earth Ground Tester
Handheld earth ground testing
for mobile use
The Fluke 1621 is an easy-to-use
earth ground tester. The first line of
defense in detecting reliable ground
connections, the unit features basic
ground testing methods including 3-pole
Fall-of-Potential as well as 2-pole ground
resistance. Its convenient size, rugged
holster, and large, clear LCD display make
it an ideal field earth tester, for most
work environments. With a simple user
interface and intuitive functionality, the
Fluke 1621 is a handy tool for electrical
contractors, utility test engineers, and
earth ground specialists.
Features
•3-pole Fall-of-Potential earth testing for
basic measurements
•2-pole resistance measurements for
added versatility
•Easily capture values with single-button
operation
•Ensure accurate measurements with
automatic ‘noise’ voltage detection
•Hazardous voltage warning offers
increased user protection
•Clearly read and record data with a
large, backlit display
•Rugged holster and design for tough
work environments
•Portable size allows for easy
transportation
•Instantly be alerted to measurements
outside of your set limit, when you use
the adjustable limit setting
•Safety rating CAT II 600 V
Fluke 1621
Specifications
(Check the Fluke web for detailed specifications)
1621
0.15 Ω to 2 kΩ
± 6% of measured value + 5D
± 18% of measured value +5D
23 to 24 V AC
> 50 mA AC
Resistance range
Basic accuracy
Operating error according EN61557
Test voltage
Short circuit current
Battery type: 1 x 9 V alkaline (LR61)
Size (HxWxD): 216 mm x 113 mm x 54 mm
Weight: 0.850 kg
Two Year Warranty
Recommended Accessories
Included accessories
Two measuring leads with alligator clips 2 m, protective holster, users manual, CD-ROM
Ordering information
Fluke 1621
Earth Ground Tester
GEO CABLE-REEL 25M
Ground Earth Cable Reel
25 M Wire
GEO CABLE-REEL 50M
Ground Earth Cable Reel
50 M Wire
GEO EARTH STAKE
Ground Earth Stake
ES-162P3
Stake/reel set for 3 pole
measurements
37
1630 Earth Ground
Clamp Meter
Fast and easy earth ground loop testing
The Fluke 1630 earth ground clamp
meter simplifies ground loop testing and
enables non-intrusive leakage current
measurement. The ground loop testing is
also known as “stakeless” earth ground
testing. To carry out the measurement
there is no need for placing earth stakes
and disconnecting the earth system
from the electrical installation. The Fluke
1630 combines the two current clamps
needed to perform the stakeless ground
loop test in one compact and easy to use
instrument.
•Ground loop resistance testing without
any disconnection or additional earth
stakes
•Earth ground leakage current
measurement for system
troubleshooting
•True RMS AC current measurement
range up to 30 A
•Rapid evaluation of continuity without
disconnection and audible HI/LO alarm
•Display-HOLD function to freeze
measurements
•Recording function for automatic
storage of measured values, which can
be recalled later on the LCD display
•Automatic self calibration ensures
correct measurement every time
The Fluke 1630 is ideally suited for the
following applications:
•Ground loop checks on any earthing
system
•Continuity tests on earth bonding
circuits and connections
•Inspection of lightning protection
systems
•Leakage current measurement for
troubleshooting on earth ground
systems
Specifications
(Check the Fluke web for detailed specifications)
Fluke 1630
Resistance
Cntinuity buzzer
Leakage current
Current
Weight: 0.64 kg
Conductor Size: 35 mm approx.
Size (HxWxD): 257 mm x 100 mm x 47 mm
Battery type: 9 V IEC 6 LR 61
Two Year Warranty
Included Accessories
Rugged carrying case with belt, Resistance test
loop, 9 V battery, Operating instructions.
Ordering Information
Fluke 1630
38
Earth Ground Clamp Meter
Range
0.025 to 1500 Ω
< app. 40 Ω
0.2 to 1000 mA
0.2 to 30 A
Max. resolution
0.002 Ω
0.001 mA
0.01 A
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