Keeping the pulse of your system

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Clear insight into your system

ImpulseCheck is the world's first intelligent assistance system for surge protection in the field of mains protection. The module allows you to measure the state of health (SoH) of every single protective device via cloud connection and provides new digital services.

ImpulseCheck wins the
GIT Security Award 2020

With our assistance system for surge protection ImpulseCheck, we have won the GIT Security Award 2020 in Category A. Dr. Martin Wetter, Business Unit Manager Surge Protection TRABTECH, received the award at the ceremony at the SPS trade fair in Nuremberg.

With the intelligent assistance system, the state-of-health, like the current status of the surge protection, can be called up online at any time. In addition to monitoring the surge protection devices, ImpulseCheck also offers a simple and comprehensive analysis of the system EMC. Possible disturbance variables are detected before there is a failure in the system. This makes it easier to plan service and maintenance operations.

Our thanks go to all readers, market participants and partners for their participation in the voting. We are pleased to have submitted ImpulseCheck, a product that really inspired the participants.

ImpulseCheck wins the GIT Security Award 2020

What ImpulseCheck offers

Keeping the pulse of your system

Benefit from predictive maintenance: Thanks to real-time measurement of surge currents and transient overvoltages, you can continuously monitor the condition of the system and the surge protection. This makes the remaining service life expectancy (state of health – SoH) of the protective devices transparent so that maintenance services become more predictable.
Keeping the pulse of your system

Status reports at the push of a button

Depending on the system type, the IEC 62305-3 standard requires surge protective devices to be checked at specific intervals. Thanks to real-time monitoring, you know the SPD's state and generate status reports at any time at the push of a button – even between predetermined test intervals. Thus you are perfectly informed, whenever you want.
Status reports at the push of a button

Using digital added values and services

The cloud-based analysis of measured values enables completely new automated processes. Combine the values of the overvoltage events in the cloud, e.g. with local weather data or location information. Use this information for your logistics or export the data for your own evaluations.
Using digital added values and services

Have a look at real measurement results

As part of our product development program, surge protective devices are subjected to surge currents and transient overvoltages during testing. The testing systems in our laboratory are able to generate surge currents and surge voltages with different pulse shapes. An ImpulseCheck is installed on one of these test systems. This device provides data for our demo system.

Gain an overview of the user interface and functions of the ImpulseAnalytics application and test our demo system.

To access our demo system, please use the following credentials:

Password: ImpulseCheck2021!


ImpulseCheck in use

Telefónica Deutschland GmbH & Co. OHG is taking a new approach to preventive maintenance of sensitive areas in the data center and and mobile phone sites. ImpulseCheck is used to monitor the surge protection devices installed here.

Exploring new paths – ImpulseCheck

ImpulseCheck redefines the way surge protective devices and the system's EMC are monitored. Familiarize yourself with our assistance system for surge protection.

The early warning system for the control cabinet: ImpulseCheck

Interview on the assistance system for surge protection at the Hanover Fair with the product managers for ImpulseCheck and

The early warning system for the control cabinet: ImpulseCheck YouTube

ImpulseCheck – Assistant system for surge protection

ImpulseCheck detects the load of your surge protective devices and the installation caused by transient overvoltages and surge currents. The animation briefly describes the assistance system for surge protection.

ImpulseCheck – Assistant system for surge protection YouTube

ImpulseCheck – Installation and Start-up

We accompanied the installation and start-up of an ImpulseCheck with the camera. The video clearly shows the necessary steps to integrate a ImpulseCheck into your system.

ImpulseCheck – Installation and Start-up

ImpulseCheck is the first assistance system for surge protection in the mains protection sector. In addition to the basic functionality, this video shows the steps required to integrate an ImpulseCheck in

Impulse Analytics Service, the smart service from for ImpulseCheck

Impulse Analytics Service is's smart service that processes, analyzes and visualizes all ImpulseCheck data. In this video you will get a deeper insight into the application. Additionally, this video explains how the communication between ImpulseCheck and is set up.

What does the first major firmware update for the ImpulseCheck offer?

In this video you will learn about the possibilities offered by the update to firmware 2.0 for the ImpulseCheck. The new functions are explained clearly on the web interface. Learn about the background of the update and how the new communication options with the ImpulseCheck work.

Control cabinet construction with the planning and marking software PROJECT complete YouTube

At home in your industry – Selected applications

ImpulseCheck​ is ideally suited for use in highly complex or difficult-to-access systems that in turn require a high degree of availability to avert the high costs associated with downtimes or avoid delaying critical operational processes.

​Thanks to connectivity, the state​ of health (​SoH​) of the protective devices and, thus, the status of the entire system, can be accessed any time, anywhere. Your benefit ─ Maintenance can be planned even more efficiently.

Here is a small selection of examples that lend themselves to the assistance system for surge protection.

Industrial estate
Industrial estate
Offshore platform
Offshore platform
Wind farm
Wind farm
Oil and gas
Oil and gas
Transportation technology
Transportation technology

ImpulseCheck in detail

Why ImpulseCheck?

Your systems are subjected to electromagnetic interferences every day. The number of interferences and their effects usually go unnoticed, however. Installed surge protective devices (SPDs) protect against surge currents and destructive transients. This improves system availability while helping to safeguard operation. Even SPDs with status indicators, however, do not provide information on how long protection will last. This is where ImpulseCheck comes in and identifies electromagnetic interferences. To this end, Phoenix Contact SPDs reliably detect and indicate previous damage. Exposure to electromagnetic interferences in your system also becomes transparent even without the SPDs installed.
Why ImpulseCheck?

Method of operation

ImpulseCheck is the assistance system for surge protection and enables the continuous monitoring of the system's EMC and the installed surge protective devices (SPDs). Electromagnetic interference and surge currents are detected on each active conductor, allocated a time stamp, and transferred to It is here that the events are analyzed. Key parameters are evaluated and indicated. For Phoenix Contact SPDs, the actual load is determined at all times based on the recorded events. The state of health (SoH) is output for each mode of protection.
Method of operation

Connection and communication

In just a few easy steps, you can affix up to four sensors to the connecting cables of the power supply or an SPD that is actively monitored. Thanks to external sensors, the system can be easily installed or retrofitted in both new and existing systems. If the SPD has a remote indication contact, this is also linked to ImpulseCheck. Power is supplied via a 24 V DC connection. The assistance system connects to the Internet via an Ethernet connection to communicate with
Connection and communication

Configuration via web-based management

ImpulseCheck is incorporated in the IT environment via an integrated web-based management system. For this purpose, a direct connection is established between the laptop and ImpulseCheck​, and web-based management​ is accessed. Data such as the IP address or dynamic IP assignment via DHCP, proxy servers and other IT-relevant data are entered. After ImpulseCheck has been configured and incorporated in your IT environment, it is ready to start transmitting data to
Configuration via web-based management

Impulse Analytics Service from

After registering and logging in to, the hardware ImpulseCheck is configured in the Impulse Analytics Service. To this end, key protective device configuration parameters are entered. The installation date is also important when it comes to quantifying the state of health (SoH) for Phoenix Contact SPDs. Location information or internal contact persons make it easier to identify individual ImpulseCheck installations if several locations are monitored.
Impulse Analytics Service from

Consistent security concept

A deeply integrated security concept provides you with maximum security. TLS 1.2 (Transport Layer Security) encryption and authentication is used for all data transmission between ImpulseCheck and The methods applied are also used to ensure secure data transfer during online banking.
Consistent security concept

High level of availability with maximum security

The cloud-based solution offers you a high level of security by implementing access protection and the latest encryption technologies. At the same time, redundant servers and automatic backups ensure the highest level of availability. Our servers are in Germany, which means that your data is also subject to strict European data protection guidelines.
High level of availability with maximum security

Product information

Intelligentes Überwachungssystem - ImpulseCheck

Intelligent assistance system for surge protection ─ ImpulseCheck

ImpulseCheck is the first assistance system for surge protection in the field of mains protection. The system consists of the IPCH-4X-PCL-TCP-24DC-UT pulse measuring device, a corresponding number of sensors and the smart service Impulse Analytics in

Ambient temperature (operation)
-25 °C ... 60 °C
Degree of protection
Mounting type
DIN rail: 35 mm
Operating voltage
24 V DC (-15 % ... +20 %)
Detectable values (current strength)
100 A ... 40 kA
Sampling rate
500 kHz
Maximum measuring period
1 s
24 V supply, SPD remote indication contact monitoring, sensor cables, Ethernet

ImpulseCheck FAQs

In this section you will find a collection of frequently asked questions (FAQ), that have reached us since the launch of ImpulseCheck. If you prefer to download the full list of FAQs, please click here.

1. How secure is ImpulseCheck (IT security)?

The measurement data is transmitted via an encrypted Internet connection in accordance with the TLS 1.2 standard. You can temporarily start a local web server for network settings on the device, such as static or dynamic IP (DHCP) or proxy configurations. In normal operation, the device does not disclose any open ports, which means maximum security. Any software updates necessary in the future will be made available automatically.

2. What does Phoenix Contact do with the data?

The measurement data is stored permanently in the in order to calculate long-term effects on the protective device and to identify systematic malfunctions in the system. Only anonymized data which, in accordance with GDPR, does not enable the identification of persons, is used for the continuous improvement of the aging algorithms and for general statistical purposes.

3. Can ImpulseCheck be installed without an SPD?

Yes. For the analysis of the system EMC, the sensors can, for example, be mounted on the feed-in lines of a system in order to detect transient overvoltages and surge currents there. With the appropriate expertise, this measurement data can be used to draw far-reaching conclusions regarding the system EMC.

4. Can ImpulseCheck also detect flickers and harmonics?

No. The transient overvoltages are detected through capacitive measurement via the sensors mounted on the cables. The process is optimized for transient overvoltages. Flickers and harmonics are not within the detection frequency range. Other devices, such as the EMpro energy measuring devices, are suitable for measuring flickers and harmonics.

5. Why does ImpulseCheck only function in connection with the

A key role of ImpulseCheck is determining the load on an SPD (surge protective device). This makes it possible to draw conclusions on its state of health (SoH).

The algorithms established for estimating the aging behavior can be continuously improved through empirical data. By permanently storing the measurement data in the, all users can benefit from this continuous improvement of the algorithms, even if ImpulseCheck has been installed for a number of years. As soon as an improved algorithm is available, this is integrated into the Impulse Analytics Service. It is automatically applied to all previously available data. This makes the system absolutely future-proof, which would not be possible with a local platform not connected to the cloud.

6. How can the data be exported and integrated into an existing control system?

The REST interface of the ImpulseAnalytics application enables all data to be called up and further processed at any time. Furthermore, there is a simple function available for exporting the entire measurement data for selected individual events for your own evaluations.

7. Can ImpulseCheck only be used with SPDs from Phoenix Contact?

No. ImpulseCheck can be used with any SPD from any manufacturer. The measurement and representation of the load caused by transient overvoltages and surge currents does not depend on the type of SPD. However, statements on the state of health (SoH) and recommendations for the predictive replacement of the surge protection can only be made for surge protective devices from Phoenix Contact, because this requires detailed knowledge of the internal design and structure of the SPD.

8. Does Phoenix Contact provide support in the interpretation of events?

The Smart Service Impulse Analytics Service from is continuously being further developed. Your contact partner in sales will be happy to answer any enquiries regarding the interpretation of any outstanding events. However, it is not possible to guarantee the prompt and comprehensive processing of all enquiries.

9. Can a correction factor for calculating the state of health (SoH) be applied for older SPDs?

No. It is not possible to determine the previous load of an older SPD. The highly nonlinear behavior of the components installed in SPDs means that a retroactive calculation based on current measurement data is not possible. Making a forecast of the aging based on the date of installation is also impossible, because aging is primarily caused by individual events – the frequency of which is unknown.

10. Does an ImpulseCheck device have to be installed on every SPD?

Each SPD to be monitored requires an ImpulseCheck device.

11. Is there a volume discount on the devices on the platform?

A volume discount is not currently provided as a standard. Please contact your partner in sales regarding this.

12. Which port does my IT department have to activate?

For connection to the Proficloud, the device must be able to reach the configured DNS server or that assigned by the DHCP server. Furthermore, the device communicates with the domains and via port 443. It is also possible to use an HTTP proxy server with “basic” authentication.

13. Why is there a difference between the entries in the lists "Surge Current List" and "Transient Overvoltage List"?

The sensor of IPCH is designed for a measurement of the change of magnetic field which results from a change in current flow. Such measurements are shown as events in the surge current list. An additional function of the sensors in combination with the multi-layer PCB board in the IPCH module is a detection of transient overvoltages by capacitive coupling. This is a mere counting of events without quantitative information about the voltage spikes.

14. Why is there not one entry per detected transient overvoltage?

The transient overvoltages are counted in real time, but since thousands of transients can occur in a very short time, it is not possible to put a separate time stamp on each event. The total number of transients is transmitted approximately every minute.

15. In case of the cloud connection being interrupted, are events also stored in ImpulseCheck and transmitted at a later point in time?

The device also works if the connection is interrupted. Pulses continue to be measured and the device constantly attempts to re-establish the connection to In the absence of a cloud connection, a limited number of pulses can be stored in the buffer memory until the connection to is restored. The number of stored pulses depends on the respective duration, as this largely determines the required amount of data. Please note that the ImpulseCheck cannot set a correct time stamp if the cloud connection is lost.

Please contact our team!

Do you have questions regarding ImpulseCheck? Our experts will be pleased to help you!

Please contact us directly to get your individual questions answered
We support you with questions regarding the installation and setup of ImpulseCheck
Receive competent advice during operation or during the interpretation of the recorded measurement data