Fluke 1503 | 1000V Insulation Resistance Tester for Electrical Maintenance

Routine maintenance of motors, cables, and electrical installations requires a dependable way to detect insulation deterioration before it leads to a breakdown. The Fluke 1503 Insulation Resistance Tester provides straightforward 500 V and 1000 V insulation testing in a compact field instrument.

It measures insulation resistance from 0.1 MΩ to 2000 MΩ, while AC/DC voltage measurement to 600 V allows technicians to verify circuit conditions before testing. A 200 mA continuity function supports earth-bond and winding checks, and the supplied remote probe helps simplify repeated measurements. Live-circuit detection blocks insulation testing when voltage above 30 V is present, while automatic discharge removes stored capacitive voltage after a test. This makes the 1503 particularly practical for routine troubleshooting, commissioning and preventive maintenance.

Basic Insulation Tester Selection Guide

Choose the 1503 when 500 V and 1000 V test voltages cover your equipment. Select the 1507 when you need lower test voltages, PI/DAR calculations, or Pass/Fail comparison.

Market Relevance

The Fluke 1503 suits Pakistani motor workshops, factories, electrical contractors, building maintenance teams, and industrial service teams that perform regular insulation checks. Buy the Fluke 1503 from Kamadi Pakistan for dependable everyday insulation testing.

Key Features

• 500 V and 1000 V insulation testing
  
• 200 mA continuity testing
  
• Live-circuit detection above 30 V
  
• Automatic capacitive discharge
  
• Remote test probe support
  

Technical Specifications

• Model: Fluke 1503
  
• Insulation Range: 0.1 MΩ–2000 MΩ
  
• Test Voltages: 500 V / 1000 V
  
• Test Current: 1 mA nominal
  
• AC/DC Voltage: Up to 600 V
  
• Voltage Resolution: 0.1 V
  
• Resistance Range: 0.01 Ω–20 kΩ
  
• Continuity Current: >200 mA
  
• Maximum Capacitive Load: 1 µF
  
• Insulation Tests per Battery Set: >1000
  

Applications

• Motor insulation checks
  
• Cable testing
  
• Distribution-panel maintenance
  
• Electrical commissioning
  
• Preventive maintenance
  

Professional Tip: Establish a baseline insulation value when equipment is known to be healthy; future trends are usually more useful than judging one reading in isolation.