Current monitoring device 3EX5 06 series

remote

Overview
Surge arrester monitoring ensures the reliable operation and extended service life of surge arresters that protect electrical equipment from overvoltage events. Siemens Energy provides a portfolio of monitoring devices that detect early signs of arrester degradation and support preventive maintenance, remote diagnostics and data-driven asset management.

Why monitor Surge Arresters?

• Early detection of condition changes
• Prevention of unexpected outages
• Optimized maintenance scheduling
• Improved asset management and network reliability

Product portfolio and device families
Siemens Energy offers solutions ranging from simple surge counters to advanced Arrester Condition Monitors (ACM) and Sensarresters™ for real-time remote access and analytics.

Surge Counters

• 3EX5 030 surge counter: monitor integrated into the arrester ground connection to count surge responses.
• 3EX5 050 surge counter with leakage current meter: counts responses and measures/displays leakage current.
• Versions 3EX5 030-1 and 3EX5 050-1: optional passive auxiliary contact for remote metering.

Counter for remote monitoring (3EX5 060/062)

• 3EX5 060 sensor: installed in the arrester ground wire; counts surge responses and continuously measures leakage current.
• 3EX5 062 display: visualizes surge counts and leakage current remotely up to 200 m from the sensor; provides a connection for local leakage current measurement (e.g., oscilloscope with accessory measuring lead).

Arrester Condition Monitors (ACM)

• Basic version (3EX5 080-0): measures total leakage current and surge impulses, performs 3rd harmonic analysis with network harmonic compensation, applies temperature correction and indicates condition via traffic-light LEDs; upgradeable.
• Advanced version (3EX5 080-1): adds a wireless USB module for direct PC communication to enable detailed visualization, analysis, parameter configuration and software updates via the ACM Service Tool.

Sensarresters™ — connected monitoring

• Real-time remote access: online status checks via web and mobile applications.
• Data analytics integration: supports predictive maintenance and operational planning.
• Wireless communication: enables remote diagnostics and seamless data transfer.

Sensor and Display Units

• 3EX5 060 Sensor: integrated sensor counting surge responses and measuring leakage current continuously.
• 3EX5 062 Display: remote visualization of sensor data (surge counts and leakage current) up to 200 m and provision for local leakage measurement.

Key Features and Benefits

• Comprehensive monitoring: from impulse counting to harmonic analysis and energy absorption logging.
• Long-term trend analysis: ACM devices log daily leakage current for multi-year trend evaluation.
• Remote access and wireless options: reduce site visits and facilitate faster diagnostics.
• Integration-ready: designed for installation on existing arresters without modification.
• Improved operational safety: early condition detection supports uninterrupted power supply planning.

Downloads
Product brochures and flyers for Sensarresters and surge counters are available as PDF resources describing device features and application guidance.

Technical specifications

• 3EX5 030: surge count monitoring; integrated into arrester ground connection.
• 3EX5 050: surge count and leakage current measurement/display.
• 3EX5 030-1 / 3EX5 050-1: optional passive auxiliary contact for remote metering.
• 3EX5 060 (sensor): continuous leakage current measurement; surge response counting; ground-wire installation.
• 3EX5 062 (display): remote visualization of surge counts and leakage current; installable up to 200 m from sensor; local oscilloscope connection.
• 3EX5 080-0 (ACM basic): total leakage and surge impulse measurement; 3rd harmonic analysis with network compensation; temperature correction; LED condition indicator; upgradeable.
• 3EX5 080-1 (ACM advanced): wireless USB module for PC communication; detailed visualization, parameter configuration and software updates via ACM Service Tool.
• Sensarresters™: real-time remote access, analytics integration and wireless communication for predictive maintenance and remote diagnostics.