Fluke 1577 | 1kV True-RMS Insulation Multimeter for Electrical Maintenance

Routine insulation testing does not always require multiple test-voltage steps or advanced motor-drive diagnostics. The Fluke 1577 Insulation Multimeter combines a True-RMS digital multimeter with straightforward 500 V and 1000 V insulation testing for electrical maintenance and troubleshooting.

Its insulation-resistance range extends from 0.1 MΩ to 600 MΩ, covering common motors, cables and electrical equipment. The meter also provides AC/DC voltage, AC/DC milliamps, resistance and continuity measurement. Live-circuit detection prevents an insulation test when it detects more than 30 V, while automatic discharge helps remove stored capacitive voltage after insulation testing. Compared with the 1587 FC, the 1577 is intentionally simpler and omits functions such as temperature, frequency, capacitance, diode testing and the motor-drive low-pass filter.

Essential Insulation Multimeter Selection Guide

Choose the 1577 when 500 V and 1000 V insulation tests with a 600 MΩ range cover the application. Select the 1587 FC when you need lower test voltages, higher insulation resistance, PI/DAR analysis, or additional multimeter functions.

Market Relevance

The Fluke 1577 is practical for Pakistani industrial electricians, motor-repair workshops, maintenance contractors, manufacturing facilities and electrical service teams performing routine insulation checks. Kamadi Pakistan offers the Fluke 1577 for dependable combined insulation and electrical testing.

Key Features

• True-RMS multimeter plus insulation tester
  
• 500 V and 1000 V insulation tests
  
• Live-circuit detection above 30 V
  
• Automatic capacitive discharge
  
• Large backlit digital display
  

Technical Specifications

• Model: Fluke 1577
  
• Insulation Test Voltages: 500 V / 1000 V
  
• Insulation Resistance: 0.1 MΩ–600 MΩ
  
• Resistance: 0.1 Ω–50 MΩ
  
• AC/DC Voltage: Yes
  
• AC/DC Milliamps: Yes
  
• Continuity: Yes
  
• Live-Circuit Warning: >30 V
  
• Auto-Discharge: Yes
  
• True-RMS: Yes
  

Applications

• Motor insulation checks
  
• Cable insulation testing
  
• Electrical maintenance
  
• Equipment commissioning
  
• Preventive maintenance
  

Professional Tip: Disconnect sensitive electronic controls before applying insulation-test voltage; a valid insulation test should evaluate the intended insulation system without unnecessarily exposing connected electronics.