10310/2/1 | Honeywell Earth Leakage Detector (ELD)

The Honeywell 10310/2/1 Earth Leakage Detector (ELD) is designed for 24 V DC systems to monitor earth leakage, ensuring operational safety and reliability. It includes features for manual testing, earth connection monitoring, and fault detection.

Features and Operation

• Compatible Systems:
  • 24 V DC, 48 V DC, 60 V DC, or 110 V DC systems.
• Modes of Operation:
  • Continuous Monitoring: Switch 1 in the ‘DC’ position.
  • Interrupting Connection:
    • At 1 Hz (Switch 1 in the ‘1 Hz’ position).
    • At 0.25 Hz (Switch 1 in the ‘1/4 Hz’ position).
• LED Indicator: Green ‘MODE’ LED flashes at selected frequency.
• Earth Fault Detection:
  • Earth faults trigger the flip-flop, de-energizing the relay.
  • Fault reset options:
    • Manually (Switch 2 to ‘RESET’).
    • High-level signal at Rst24 or Rst110 inputs.
• Self-Test Function:
  • A 1.5 kΩ resistor connected between 0 V and earth can test the ELD.
  • Earth connection test via internal 1.5 kΩ resistor with Earth2 pin connection (Switch 2 in ‘TEST’ position).

Technical Specifications

Power Supply:

• Voltage: 24 V DC (max. 30 V DC).
• Current: max. 60 mA.

Input Voltage:

• Rst24: 18–70 V DC.
• Rst110: 40–130 V DC.

Input Current:

• Rst24: 1.1 mA at 24 V DC.
• Rst110: 2.5 mA at 110 V DC.

Earth Parameters:

• Earth voltage: -12 V DC (normal).
• Fault threshold: -30 to +125 V DC.
• Max. earth current: 5.5 mA (± 1 mA), 25.0 mA (± 5 mA).

Output Contact:

• Max. voltage: 115 V DC.
• Max. current: 2 A.

Relay Contacts:

• Initial resistance: 30 mΩ.
• Max. current: 5 A.
• Max. switched voltage: 250 V DC / 250 V AC.
• Max. load: 100 W / 1000 VA.
• Expected life:
  • Electrical: 100,000 operations.
  • Mechanical: 200,000,000 operations.

Approvals and Certification

• Type: 10310/2/1
• Certification: CE, UL

Mechanical Details

• Key Coding:
  • Module: Holes A5, A11.
  • Rack: Large pins A5, A11.

The 10310/2/1 ELD is a robust solution for detecting earth leakage in DC systems, combining reliability with advanced fault-detection capabilities.

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