The Fluke 1577 Insulation Multimeter combines a digital insulation tester and true-RMS digital multimeter into a single handheld instrument. It delivers dual-function capability for troubleshooting and preventative maintenance of electrical systems, motors, generators, cables, and switchgear without carrying separate tools.
– Technical Specifications
Insulation Testing
• Test voltages: 500 V, 1000 V
• Insulation resistance measurement range: 0.1 MΩ to 600 MΩ
• Resolution: 0.01 MΩ (50 V, 100 V); 0.1 MΩ (250 V, 500 V, 1000 V)
• Accuracy: ±(3% + 5) at 50 V and 100 V; ±(1.5% + 5) at 250 V; ±(2.0% + 5) at 500 V and 1000 V
• Minimum test current: 1 mA @ 1 kΩ/V
• Auto discharge of capacitive voltage: Yes
• Live circuit detection: Prevents insulation test above 30 V
Digital Multimeter Functions
• DC voltage: 0–1000 V, ±(0.2% + 2) accuracy, 0.001 V resolution
• AC voltage: 0–1000 V, ±(2% + 3) accuracy, 0.1 mV resolution
• DC current: 0–400 mA, ±(1.0% + 2) accuracy, 0.01 mA resolution
• AC current: 0–400 mA, ±(2.0% + 2) accuracy, 0.01 mA resolution
• Resistance: 0–50 MΩ, ±(1.2% + 2) accuracy, 0.1 Ω resolution
• Continuity and true RMS included
Safety & Environmental
• Overvoltage category: CAT III 1000 V, CAT IV 600 V
• Safety standards: ANSI/ISA 82.02.01 (61010-1) 2004, CAN/CSA-C22.2 NO. 61010-1-04, IEC/EN 61010-1 2nd Edition
• IP40 rating; dimensions 203 mm × 100 mm × 50 mm; weight 0.624 kg
• Operating temperature: –20°C to +55°C
• Large backlit LCD display
– Key Features
• Battery life: 1000 hours (meter use); minimum 1000 insulation tests per alkaline battery set
• Auto power-off function
• Includes remote probe, test leads, alligator clips, hard case, and four AA alkaline batteries
– Typical Applications
Electrical system troubleshooting, motor and generator testing, cable insulation verification, switchgear maintenance.
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