Hioki ST5520-01 Insulation Resistance Tester

Overview

The Hioki ST5520-01 is a compact insulation resistance tester designed for rapidly assessing electrical safety compliance of various devices. It supports configurable test voltages from 25 V to 1000 V with 1 V resolution, enabling users to test products across different voltage classifications. Featuring rapid measurement in as little as 50 milliseconds and quick discharge of residual voltage, the ST5520-01 includes BCD output for enhanced integration with automated testing systems.

Key Features

• Rapid measurement: assessment in as fast as 50 ms
• Freely configurable test voltage: 25 V to 1000 V with 1 V resolution
• Contact check function to prevent errors from poor contact
• Short-circuit check function to stop defects before reaching market
• Quick discharge of residual voltage
• Basic accuracy: ±2% reading ±5 digits
• Selectable measurement speed: Fast (30 ms) or Slow (500 ms)
• LCD display with 4-level backlight and 100,000-hour service life
• Internal memory: saves up to 10 test configurations
• Comparator with upper/lower limit pass/fail assessment
• BCD output for automated test integration
• RS-232C interface and External I/O for automation support
• Compact design: 215 mm (W) × 80 mm (H) × 166 mm (D)

Applications

• Production line testing for electrical safety compliance
• Automated testing systems requiring BCD output
• Field inspections and maintenance verification
• Medical device and general-use electrical device testing
• Quality assurance and defect detection

Included Accessories

• Instruction Manual
• Power cord
• EXT. I/O Connector
• Connector Cover