Key Features

• Type: Insulation monitoring device (ISOMETER)
• Model Variant: iso685-S-P (sensor variant)
• Voltage Range: AC 24–240 V / DC 24–240 V
• Frequency Range: 50–400 Hz
• System Compatibility: Designed for unearthed IT systems (AC, 3(N)AC, AC/DC, DC)
• Display & Controls: No integrated display or controls — requires FP200 front panel for operation

 Monitoring Capabilities

• Measures:
  • Insulation resistance
  • System voltage
  • Leakage capacitance
  • Frequency
• Supports:
  • Automatic adaptation to system leakage capacitance
  • Two adjustable alarm thresholds 1 kto 10 M
  • Connection monitoring and self-test functions

 Communication & Integration

• Interfaces:
  • Modbus TCP/RTU
  • RS-485 (Bender sensor bus)
  • Web server for remote access
• Compatible with EDS44x series for insulation fault location
• Supports up to 12 measuring current transformers

 Smart Functions

• History memory with real-time clock (stores up to 1023 alarm messages)
• Graphical insulation resistance trend (via FP200)
• Programmable digital I / OS
• Remote configuration via internet/intranet