- High-voltage digital megohmmeter has preset and adjustable test voltages for measuring insulation resistance, and also measures leakage current to 2 milliamperes (mA) and capacitance to 20 microfarads.
- Measures voltage to 600V and signals when a voltage greater than 30V is detected.
- Automatically calculates PI and DAR for a detailed indication of insulation condition.
- Performs timed tests up to 99 minutes, and stores up to 99 test results which can be uploaded to a PC.
- Meets EN safety standards 61010-1 and 61557, and is rated for CAT IV installations to 600V and CAT III installations to 1,000V.
The Fluke high-voltage digital megohmmeter is an insulation
tester with preset and adjustable test voltages for measuring
insulation resistance to 1TΩ (2TΩ for 10kV models) to indicate
the condition of windings or cables in motors, switchgears,
electrical installations, and other insulated equipment, and it
also measures leakage current to 2 milliamperes (mA), capacitance
to 20μF, and AC and DC voltage to 600V, signaling when a voltage
greater than 30V is detected. In addition to the preset test
voltages of 250V, 500V, 1,000V, 2,500V, 5,000V, plus 10,000V for
the 10kV models, test voltages can be adjusted in 50V increments
to 1,000V and 100V increments above 1,000V. Its PI/DAR
(polarization index/dielectric absorption rate) function
automatically calculates PI and DAR, which are measurements over
time that give a truer indication of insulation condition than
single-point measurements. The meter can perform timed tests up
to 99 minutes, adjustable in 1-minute increments, and has storage
for up to 99 test results. Stored results can be uploaded to a PC
with the included FlukeView Forms Basic software. The software is
compatible with Microsoft Windows 2000, XP, and Vista. For
improved accuracy during high-resistance testing, the guard
terminal eliminates interference from leakage current. The meter
has an LCD that shows the reading numerically and in a bar graph.
Megohmmeters are commonly used for electrical maintenance and
testing in industries such as HVAC, transportation,
manufacturing, mining, and utilities, among others.
The meter is rated for category (CAT) IV installations to 600V,
which covers equipment at the origin of the installation, such as
electricity meters and primary over-current protection equipment,
and CAT III installations to 1,000V, which covers equipment in
fixed installations, such as switches in the fixed installation
and some industrial equipment that is permanently connected to
the fixed installation. The unit has a low-battery indicator that
signals when the battery needs to be replaced and automatically
turns off after 30 minutes of non-use. It comes with a set of
test cables with alligator clips, a set of heavy duty alligator
clips (for kit and 10kV models), an infrared-to-USB interface
cable, FlukeView Forms Basic CD-ROM, rechargeable 12V lead-
battery (installed), an AC power cord for charging the battery,
instructions, a soft carrying case (only for models without kit),
a hard carrying case (only for kit models), and a certificate of
calibration (only for kit models).
Specifications
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Maximum insulation resistance measured1TΩ for Fluke 1550C; 2TΩ
for Fluke 1555Test voltages250V, 500V, 1,000V, 2,500V, 5,000V;
also 10,000V for Fluke 1555Maximum leakage current
measured2mAMaximum capacitance measured20μFMaximum AC and DC
voltage measured600VInstallation ratingCAT IV, 600V; CAT III,
1,000VStandards metEN safety standards 61010-1 and 61557; CE
marking; CSA and TÜV certificationPowerRechargeable 12V lead-
batteryWeight3.6kg/7.94 lb.Dimensions (H x W x D)*170 x 242 x
330mm/6.7 x 9.5 x 13 inches
*H is height, the vertical distance from the lowest to highest
point; W is width, the horizontal distance from left to right; D
is depth, the horizontal distance from front to back
.Megohmmeters, also called insulation testers, are electrical
test meters that measure resistance to the flow of current in an
electrical component or circuit and check the continuity of an
electrical circuit to detect electrical problems such as degraded
insulation and improper circuit connections in equipment, wiring,
and power supplies. Resistance is an indicator of the overall
condition of the device being tested. Megohmmeters have an
internal power supply, such as a battery or a capacitor, which
supplies a test voltage to a circuit or component that is turned
off. Test leads are connected in a series to the tester and the
circuit or device being tested. The meter calculates the
difference in voltage between the leads and measures the
resistance. Most megohmmeters have two terminals for test lead
attachment. The two-terminal, or two-wire, measurement method
includes the resistance of the circuit or device being tested and
the resistance of the test leads, and generally provides
sufficient accuracy for measuring large values of resistance in
insulation testing applications.
Fluke Corporation manufactures electrical testing tools and
software for industrial and commercial applications. The company,
founded in 1948, is headquartered in Everett, WA.
What's in the Box?
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* Fluke high-voltage digital megohmmeter
* Set of test cables with alligator clips
* Set of heavy duty alligator clips (for kit and 10kV models)
* Infrared-to-USB interface cable
* FlukeView Forms Basic CD-ROM
* Rechargeable 12V lead- battery (installed)
* AC power cord for charging the battery
* Instructions
* Soft carrying case (only for models without kit)
* Hard carrying case (only for kit models)
* Certificate of calibration (only for kit models)