FLUKE-1577 Insulation Multimeter

Dual-Function Electrical Testing for Advanced Diagnostics

The Fluke 1577 Insulation Multimeter combines a professional insulation resistance tester with a full-featured True RMS digital multimeter in a single, compact handheld instrument. Designed for electricians and maintenance professionals, this versatile device enables both troubleshooting and preventative maintenance across motors, cables, generators, and switchgear.

With insulation test voltages of 500 V and 1000 V and resistance measurement up to 600 MOhm, the Fluke 1577 provides accurate diagnostics while maintaining high safety standards. Its rugged design, large backlit display, and live circuit detection make it an essential tool for demanding industrial environments.

Key Benefits & Features

• Two Tools in One: Integrates a digital insulation tester and a True RMS multimeter, eliminating the need for multiple instruments and improving efficiency.
• High-Voltage Insulation Testing: Provides selectable test voltages of 500 V and 1000 V with measurement capabilities from 0.1 MOhm to 600 MOhm.
• True RMS Measurement Accuracy: Ensures precise AC voltage and current readings even in noisy electrical environments with non-linear signals.
• Advanced User Protection: Built-in live circuit detection prevents insulation tests if voltage greater than 30 V is detected, increasing field safety.
• Field-Ready Design: Features a rugged utility hard case, auto power-off to save battery, and compatibility with the optional Fluke TPAK magnetic hanging system for hands-free use.

Ideal Use Cases

• Industrial motor and generator insulation diagnostics
• Electrical installation and cable troubleshooting
• Preventative maintenance of power distribution systems
• Switchgear testing and electrical safety inspections

Technical Specifications

• Insulation Test Voltages: 500 V, 1000 V
• Insulation Resistance Range: 0.1 MOhm to 600 MOhm
• AC/DC Voltage Measurement: Up to 1000 V
• AC/DC Current Measurement: Up to 400 mA
• Resistance Measurement: 0.1 Ohm to 50 MOhm
• Safety Rating: CAT IV 600 V / CAT III 1000 V
• Operating Temperature: -20 C to +55 C
• Dimensions: 203 x 100 x 50 mm
• Weight: 624 g

Upgrade Your Electrical Testing Toolkit Today

Choose the Fluke 1577 insulation multimeter for dependable diagnostics and professional-grade electrical testing. Order today.

Model	Fluke 1577
Product Type	Insulation Multimeter
Insulation Test Voltages	500 V, 1000 V
Insulation Measurement Range	0.1 MOhm to 600 MOhm
AC Voltage Range	Up to 1000 V
DC Voltage Range	Up to 1000 V
AC/DC Current Range	Up to 400 mA
Resistance Range	0.1 Ohm to 50 MOhm
Safety Category	CAT III 1000 V, CAT IV 600 V
IP Rating	IP40
Power	Four AA alkaline batteries
Battery Life	Meter use: 1000 hours; at least 1000 insulation tests
Size (H x W x L)	203 x 100 x 50 mm (with holster)
Weight	624 g
Operating Temperature	-20 C to +55 C
Storage Temperature	-40 C to +60 C
Operating Altitude	2000 m

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 400 mA; Accuracy (1.0% + 2); Maximum resolution 0.01 mA
Current AC	Maximum 400 mA; Accuracy (2.0% + 2); Maximum resolution 0.01 mA
Resistance	Maximum resistance 50 MOhm; Accuracy (1.2% + 2); Maximum resolution 0.1 Ohm
Insulation Test Current	Minimum test current @ 1 kOhm/V: 1 mA
Insulation Test Voltages	500 V, 1000 V
Maximum Resistance per Test Voltage	600 MOhm (1000 V test)
Maximum Resolution per Test Voltage	50 V: 0.01 MOhm; 100 V: 0.01 MOhm; 250 V: 0.1 MOhm; 500 V: 0.1 MOhm; 1000 V: 0.1 MOhm
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)
Relative Humidity	0-95% (10 C to 30 C); 0-75% (30 C to 40 C); 0-40% (40 C to 55 C)
Safety Standards	IEC 61010-1 Pollution Degree 2; IEC 61010-2-033: CAT IV 600V/CAT III 1000V

Included	Remote probe; Test leads; Alligator clips; Hard case; Four AA alkaline batteries; Quick reference guide; CD ROM with manual
Optional	Fluke TPAK magnetic hanging system

INTERNATIONAL -

International buyers must acknowledge that all duties and taxes are their sole responsibility and Network Devices Inc is not held responsible for possible additional charges.

DOMESTIC -

Products are shipped Monday through Friday via UPS/FedEx/USPS. The estimated delivery time is 1-6 business days depending on location. If “Free Shipping” is offered, it will be by Ground only and within USA Continental States Only (48 States). There will be a surcharge on shipments to Hawaii, Alaska, Puerto Rico and APO/FPO addresses. After you have made a purchase, the surcharge will be calculated using the parcel’s weight and size. Network Devices Inc ships the product the same day of receiving an order. Otherwise you will a receive notification of delay or cancellation of said order.