Monitoring devices

We offer a complete line of monitoring devices with a variety of innovative functionalities that can be perfectly matched to your requirements, ensuring that impending faults will be detected as early as possible and before the security of supply is compromised. Discover supply security at an entirely new level in our portfolio.

Do you have any questions? Are you looking for more information about our monitoring devices? We have experts to assist you with any issue.

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Product overview

Overview of our monitoring devices

Monitors assist in the early detection of relevant arrester changes and support the security of supply. Siemens offers a range of control spark gaps and analog counters as well as digital and portable monitoring devices.
 
Order number
Monitoring device
Remote indication
Control spark gaps
3EX6 040
Spark gap
No
3EX6 020
Spark gap
Optical fibre
Analog counters
3EX5 030-0
Surge counter
No
3EX5 030-1
Surge counter
Auxiliary contact
3EX5 050-0
Surge counter & amperemeter
No
3EX5 050-1
Surge counter & amperemeter
Auxiliary contact
3EX5 060/062
Surge counter & amperemeter for remote indication
Wired up to 200 m
as well as auxiliary contact
Digital monitoring devices
3EX5 080-0
Surge counter & amperemeter with traffic light indication counter & amperemeter
No
3EX5 080-1
Surge counter & amperemeter with traffic light indication counter & amperemeter
with wireless connection to PC
Wireless
Portable devices
LCM 500
Portable live condition check system for on-site measurements
Wireless

Our range of monitoring devices

Control spark gaps

Control spark gaps 3EX6 040 and 3EX6 020

The control spark gap 3EX6 040 is a monitor for surge arresters that is integrated into the arrester’s ground wire. It counts the surge arrester responses that have occurred and allows an estimation of the current flowing through the surge arrester based on characteristic burn marks.

Spark gap 3EX6 020 has a remote display with an optical connection.

Analog counters

Surge counters

The 3EX5 030 surge counter is a traditional monitor for surge arresters. It is integrated into the arrester ground connection and counts the surge arrester responses that have occurred.

The 3EX5 050 surge counter with leakage current meter also monitors and displays the arrester leakage current.

In addition to the functions described here, versions 3EX5 030-1 and 3EX5 050-1 can also be equipped with a passive auxiliary contact for remote metering.

Counter for remote monitoring 3EX5 060/62

The 3EX5 060 sensor is a surge arrester monitor that is integrated into the arrester ground wire. It counts the surge arrester responses that occur and continuously measures leakage current.
 

The 3EX5 062 display visualizes the surge arrester responses detected by the sensor and the leakage current at a convenient location. The display can be installed at a distance of up to 200 meters.
The display unit also provides a connection for measuring the leakage current locally – for example, using an oscilloscope (measuring lead available as accessory).

Digital monitoring

ACM-basic 3EX5 080-0

The basic version 3EX5 080-0 of the Siemens device for basic arrester condition monitoring (ACM) provides a wide range of standard functions, including total leakage current measurement and display, surge current impulse metering and display, 3rd harmonic analysis of leakage current with compensation for network-dependent harmonics, temperature correction, and condition indication by means of LEDs in the colors of traffic lights.
 

If the basic version is already in use on a surge arrester, it is possible to upgrade to the advanced version using a USB wireless module, free software, and a specific access license, without having to modify the arrester. It then has access to the entire range of functions of this powerful monitoring system.

ACM-advanced 3EX5 080-1

The ACM 3EX5 080-1 monitoring device features a wireless USB module to allow for direct, wireless communication with a PC or notebook.

You can use the USB wireless module (3EX5 086) and free “ACM Service Tool” software to connect the monitoring device and PC using the existing USB port. The Service Tool software makes it possible to display, analyze and evaluate the measured and calculated data on a PC. It can also be used to modify and store certain customer-specific parameters (surge arrester type, date/time correction, location, name, etc.) and perform software updates.
Portable monitor

Live Condition Monitoring with LCM 500

The LCM 500 is a portable measuring system for metal-oxide surge arresters that measures the 3rd harmonic component of the leakage current without interrupting operation.

The data obtained on the calculated resistive leakage current can provide valuable information on the condition of the arrester.

Downloads, support and services

Our services for you

You can find details on our monitoring devices and information about our services here.

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Support

Services

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Services

Testing laboratories at Schaltwerk Berlin

We test components at our accredited testing laboratories.

Testing laboratories at Schaltwerk Berlin

Numerical simulation and analytical calculation methods for efficient product development.

Contact

Get in contact with our Customer Service

Do you have any questions about our monitoring devices? Contact us. We are pleased to offer you individual advice.