Fluke 1550C | 5kV Insulation Resistance Tester up to 1 TΩ

Large motors, generators, switchgear and power cables require insulation-test voltages beyond the capability of standard handheld 1 kV testers. The Fluke 1550C Insulation Resistance Tester provides test voltages up to 5000 V for high-voltage preventive and predictive maintenance.

Its insulation resistance capability extends to 1 TΩ, while automatic PI and DAR calculations help evaluate moisture, contamination and long-term insulation deterioration. A ramp function supports breakdown testing, and leakage current and capacitance measurements give technicians additional information about the insulation system. The tester can store and label up to 99 measurement locations for future comparison. A live-voltage warning operates from 30 to 600 V AC/DC, helping identify energized equipment before insulation testing begins.

High-Voltage Insulation Tester Selection Guide

Choose the 1550C for equipment requiring insulation tests up to 5 kV. Move to the 1555 when you need 10 kV test capability or resistance measurement up to 2 TΩ.

Market Relevance

The Fluke 1550C is highly relevant to Pakistan's power plants, cement factories, steel mills, utilities, motor workshops and heavy industrial maintenance teams. Buy the Fluke 1550C from Kamadi Pakistan for high-voltage insulation diagnostics and condition monitoring.

Key Features

• Insulation testing up to 5 kV
  
• Automatic PI and DAR calculations
  
• Ramp breakdown test
  
• Leakage-current and capacitance measurement
  
• 99 labelled memory locations
  

Technical Specifications

• Model: Fluke 1550C
  
• Test Voltages: 250 / 500 / 1000 / 2500 / 5000 V
  
• Insulation Resistance: Up to 1 TΩ
  
• Leakage Current: 1 nA–2 mA
  
• Capacitance: 0.01–15.00 µF
  
• Live-Circuit Warning: 30–600 V AC/DC
  
• Memory: 99 locations
  
• PI: Automatic
  
• DAR: Automatic
  
• Battery: Rechargeable
  

Applications

• Generator insulation testing
  
• Medium/high-voltage motors
  
• Power cables
  
• Switchgear testing
  
• Predictive maintenance
  

Professional Tip: Let large motors and cables discharge fully after a 5 kV test; stored capacitive energy can remain significant even after the measurement ends.