ELKO EP offers a range of voltage monitoring relays designed to protect electrical systems from voltage anomalies. These devices monitor the voltage levels and ensure that they stay within predefined limits, providing protection against overvoltage, undervoltage, phase failure, phase sequence issues, and phase asymmetry. Here are some key features and specifications of ELKO EP voltage monitoring relays:

Key Features

1. Wide Monitoring Range: Capable of monitoring a wide range of voltage levels, making them suitable for various applications.
2. Adjustable Thresholds: Allow users to set upper and lower voltage limits according to the specific needs of their system.
3. Multi-Functionality: Many models can monitor overvoltage, undervoltage, phase failure, phase sequence, and phase asymmetry.
4. LED Indicators: Provide clear visual indications of relay status and voltage conditions.
5. DIN Rail Mounting: Designed for easy installation on standard DIN rails, making them suitable for control panels and industrial environments.
6. Relay Output: Typically feature relay outputs for controlling other devices or triggering alarms.
7. Protection Features: Include time delay settings to prevent nuisance tripping and ensure reliable operation.
8. Compact Design: Small form factor allows for easy integration into existing electrical panels.

Specifications

1. Supply Voltage: Varies by model; common options include 24V AC/DC, 48V AC/DC, 110V AC, 230V AC, etc.
2. Monitoring Voltage Range: Depends on the model; for example, 3-phase relays might monitor 3x 400V AC, while single-phase relays might monitor 230V AC.
3. Adjustable Thresholds: Upper and lower voltage limits can typically be adjusted within a specific range (e.g., 150V to 260V for a 230V system).
4. Relay Output: Commonly 1 or 2 changeover (SPDT) relays with a switching capacity of around 5A at 250V AC.
5. Operating Temperature: Typically -20°C to +55°C, suitable for most industrial environments.
6. Hysteresis: Adjustable hysteresis settings to prevent rapid switching in response to small voltage fluctuations.

Example Models

1. ELKO EP HRN-43
   • Monitoring: Overvoltage and undervoltage
   • Voltage Range: 3x 400V AC
   • Relay Output: 1 SPDT
   • Features: Adjustable thresholds, time delay, LED indicators
2. ELKO EP HRN-54
   • Monitoring: Phase failure, phase sequence, phase asymmetry
   • Voltage Range: 3x 400V AC
   • Relay Output: 1 SPDT
   • Features: Adjustable asymmetry percentage, time delay, LED indicators
3. ELKO EP HRN-100
   • Monitoring: Overvoltage, undervoltage, and phase failure
   • Voltage Range: 3x 400V AC
   • Relay Output: 2 SPDT
   • Features: Adjustable thresholds, time delay, LED indicators, phase sequence monitoring

Applications

• Industrial Automation: Protecting motors, pumps, and other critical machinery from voltage anomalies.
• Building Automation: Ensuring stable power supply for HVAC systems, elevators, and other building systems.
• Renewable Energy Systems: Monitoring voltage levels in solar and wind power installations.
• Telecommunications: Protecting sensitive electronic equipment from voltage fluctuations.
• General Electrical Protection: Ensuring the safety and reliability of electrical systems in various environments.

Benefits

• Enhanced Protection: Prevents damage to electrical equipment by ensuring stable voltage levels.
• Flexibility: Adjustable settings allow customization for specific applications and requirements.
• Ease of Installation: DIN rail mounting and compact design facilitate easy integration into existing systems.
• Reliability: Robust design and protection features ensure reliable operation in demanding environments.

If you need more detailed information on a specific model or further technical specifications, feel free to ask!