Fluke 1577 Insulation Multimeter

Rated 5.00 out of 5 based on 1 customer rating
(1 customer review)

Fluke 1577 digital insulation multimeter, this meter is also known as a multitester.

This wonderful meter can measure current, voltage, and resistance for testing line insulation on motors, generators, cables, and switchgear.


Fluke 1577digital insulation multimeter measures insulation resistance, current, voltage, and resistance for testing line insulation on motors, generators, cables, and switchgear so easily and safely.

True RMS meter provides accurate readings when measuring linear or nonlinear loads where the current or voltage has an undistorted or distorted waveform.

Fluke 1577 digital insulation multimeter, this meter is also known as a multitester. This wonderful meter can measure current, voltage, and resistance for testing line insulation on motors, generators, cables, and switchgear.

The insulation test voltages of 500 and 1000V measure resistance from 0.1 to 600 megaohms.

Live circuit detection increases user safety by preventing insulation tests when voltages exceed 30V, and auto-discharge of capacitive voltage increases user protection.

An audible continuity sensor confirms a circuit conducts electricity. The LCD is backlit for readability in low light.
A hold function freezes the reading on the display. An alarm sounds when the test leads are connected to the wrong jack for the measurement being taken.

The unit automatically turns off after 20 minutes of nonuse to conserve battery life or can be disabled for extended readings, and a low-battery indicator signals when the meter’s batteries need to be replaced.

The meter included a set of detachable test leads, a remote probe, alligator clips, a hard case, and instructions. You know about the value of this insulation tester. The results also spot on.

You can make difference between others, with this wonderful insulation tester, because this tester is more accurate, safer and faster. The fluke that’s the brand that you can surely trust on.


  • Insulation test voltages 500 V, 1000 V
  • Insulation test: 0.1 MΩ to 600 MΩ
  • Auto discharge of capacitive voltage
  • AC/DC Voltage
  • DC millivolts
  • Live circuit detection prevents insulation test if voltage > 30 V is detected for added user protection
  • AC/DC milliamps
  • Resistance (0.1 Ω to 50 MΩ)
  • Continuity
  • Three-year warranty
  • A remote probe, test leads, alligator clips
  • Rugged, utility hard case
  • Auto power off to save battery power
  • True RMS
  • Large display with backlight
  • CAT III 1000V, CAT IV 600V measurement category
  • Accepts optional Fluke TPAKTM magnetic hanging system to free your hands for other work


Voltage DC Maximum voltage 1000 V
Accuracy ±(0.2%+2)
Maximum resolution 0.001 V
Voltage AC Maximum voltage 1000 V
Accuracy ±(2%+3)
Maximum resolution 0.1 mV
Current DC Maximum amps 400 mA
Amps accuracy ±(1.0%+2)
Maximum resolution 0.01 mA
Current AC Maximum amps 400 mA
Amps accuracy ±(2.0%+2)*
Maximum resolution 0.01 mA
Resistance Maximum resistance 50 MΩ
Accuracy ±(1.2%+2)
maximum resolution 0.1Ω
Insulation Test
Minimum test current @ 1kΩ/V 1 mA
Test voltages 500, 1000 V
Maximum resistance per test voltage 50 V
100 V
250 V
500 V
1000 V 600 MΩ
Maximum resolution per test voltage 50 V 0.01 MΩ
100 V 0.01 MΩ
250 V 0.1 MΩ
500 V 0.1 MΩ
1000 V 0.1 MΩ
Accuracy per test voltage 50 V ±(3% + 5)
100 V ±(3% + 5)
250 V ±(1.5% + 5)
500 V ±(2.0% + 5)
1000 V ±(2.0% + 5)
Environmental Specifications
Operating temperature –20°C to +55°C
Storage temperature -40°C to +60°C
Humidity (without condensation) 0% – 95% (10°C – 30°C)
0% – 75% (30°C – 40°C)
0% – 40% (40°C – 55°C)
Operating altitude 2000 m
Safety Specifications
Overvoltage category 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 CAT III 1000 V and CAT IV 600 V
Agency approvals 2000 m CAT III 1000 V, CAT IV 600 V; 3000 m CAT II 1000 V, CAT III 600 V
Mechanical and General Specifications
Size 203 x 100 x 50 mm (with holster)
Weight 624 g
Warranty 3 years
Battery life alkaline Meter use 1000 hours
Insulation test use Meter 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.
IP rating IP40


  • Remote probe
  • Test leads
  • Alligator clips
  • Hard case
  • Four AA alkaline batteries
  • Quick reference guide
  • CD rom with manual


Fluke 1577 Insulation Multimeter – Catalog    Download


Fluke AC285 SureGrip Large Alligator Clip AC285

Large alligator clip for test leads used with Fluke meters.

Fluke TLK-225 SureGrip™ Master Accessory Set TLK-225

Kit includes Fluke AC220, AC280, AC283, AC285, TP220, and TL224 all in a 6-Pocket Storage Pouch.

Current Clamps
Fluke i1010-KIT Current Clamp Kit I1010-KIT

Includes carrying case.

Fluke i200 AC Current Clamp I200

Fuke i200 AC Current Clamp 1 A to 200A compatible with most Fluke multimeters or any other current measurement device that accepts shrouded banana plugs.

Fluke i400 AC Current Clamp I400

1 Amp to 400 Amps for use with DMMs.

Fluke L200 Probe Light L200

Easily attaches to any Fluke test probe.

Fluke L210 Probe Light Kit L210

L200 Probe Light and Probe Extenders.

Fluke 80AK-A Thermocouple Adapter 80AK-A

To be used with DMMs and Temperature Probes with K-Type Connector

Fluke 80PK-27 SureGrip Industrial Surface Temperature Probe 80PK-27

Designed to be compatible with any temperature measuring instrument that accepts Type K thermocouples.

Fluke 80PK-3A Surface Probe 80PK-3A

Flat Surface Temperature Probe.

Fluke 80PK-8 Pipe Clamp Temperature Probe 80PK-8

Pipe Clamp Temperature Probe.

Cases and Holsters
Fluke C101 Hard Carrying Case C101

Fluke C25 Large Soft Case for Digital Multimeters C25

The C25 carrying case is a durable, zippered carrying case with padding and inside pocket, and high-quality polyester exterior.

It includes a convenient hand strap and carries most of Fluke’s popular digital multimeters.

Fluke C550 Premium Tool Bag C550

Tool Bag with steel reinforced frame.

Fluke CXT170 CXT170

Rugged Pelican Hard Case for the Fluke 170 Series.

Fluke TPAK ToolPak Magnetic Meter Hanger ToolPak

Attaches to back of a Fluke 110/170/180 Series Meter, 20/70-III with integrated holster (with adapter), 724/725, and 50 Series II.

Test Probes
Fluke TP220 SureGrip Industrial Test Probes TP220

For use with TL222 and TL224 test leads provides reliable contact.

Test Leads
Fluke TL27 Heavy Duty Test Lead Set TL27

DMM test leads (red, black) with safety shrouded standard diameter banana plugs.

Fluke TL225 SureGrip Stray Voltage Adapter Test Lead Kit TL225

Voltage Adapter Test Lead Kit makes sure the meter has a low input impedance that eliminates stray voltages and indicates real voltage.

1 review for Fluke 1577 Insulation Multimeter

  1. Rated 5 out of 5


    Advanced multi-functional digital multimeter with built-in insulation testing functions make this the ideal all-round tool for troubleshooting, commissioning and maintenance.

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