Surge protection and lightning protection

Surge protection and lightning protection

Surge protection refers to the protection of systems and electrical devices against excessively high voltage peaks caused by switching operations and lightning strikes. An effective lightning protection strategy combines internal and external lightning protection. Protect the power supplies, data, and signals in your system. Use the reliable surge protection solutions available in our various product ranges as part of your internal lightning protection strategy.

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Your advantages

  • Protection for all common applications and signals with the complete product portfolio
  • Versatile fields of application – designs and connection technologies for every application
  • Space-saving and inexpensive installation, thanks to the slim design
  • Know what’s happening in advance with cloud-based monitoring or predictive testing of pluggable protective devices
Protective circuit principle and protection concept

Protective circuit principle and protection concept

Protective circuit principle and protection concept

You should plan a protection concept for lightning and surge protection so that all cables, devices, and systems are protected.

The protective circuit principle is easy to illustrate:
Draw an imaginary circle around the object you want to protect. Surge protective devices must be installed at all points where cables intersect this circle. This ensures that the area within the protective circuit is protected in such a way that conducted overvoltages are prevented.

When planning the protection concept, consider the following areas of application:

  • Power supply
  • Measurement and control technology
  • Information technology
  • Transmitters and receivers

An effective protective circuit helps ensure seamless surge protection.

Surge protection standards

Surge protection standards

When it comes to surge protection, which standards must be observed?

National and international standards provide a guide to establishing a lightning and surge protection concept as well as the design of the individual protective devices. They differ depending on region and field of application. The overarching standard is lightning protection standard IEC 62305. It describes protective measures against lightning events and an extensive risk analysis with regard to the necessity, scope, and cost-effectiveness of a protection concept.

Surge protection fields of application

FLT SEC type 1+2 special surge protection in main distribution

FLT SEC type 1+2 special surge protection in main distribution

Surge protection for power supplies

Our type 1+2, type 1+2 special, type 2, or type 3 surge protective devices provide effective protection for your electronic devices. From feed-in to the termination device, we provide convenient, ready-to-install solutions for all applications.

Narrow surge protection for signals in the control cabinet

Narrow surge protection for signals in the control cabinet

Surge protection for MCR technology and signals

A large number of signals are controlled and monitored in measurement and control technology (MCR technology) applications. Our protective devices prevent malfunctions and damage caused by overvoltages and offer an ideal solution for any application.

Surge protection for information technology in the control cabinet

DT-LAN protects against overvoltages from the data network

Surge protection for information technology

Data interfaces are particularly sensitive to overvoltages, because they operate with low signal levels and high frequencies. Use our surge protection solutions for interference-free data transmission with the same bandwidth in your IT systems.

Surge protective device for the protection of transceiver systems with antenna amplifiers

C-SAT-BOX protects connected TV and HiFi devices from overvoltages

Surge protection for transceiver systems

Transceiver systems are particularly at risk from overvoltages. Antenna cables that extend beyond the building and the antennas themselves are directly exposed to atmospheric discharges. Play it safe with our powerful, coaxial surge protective devices.

Ready-to-install string combiner boxes with surge protection for photovoltaic systems

Ready-to-install string combiner boxes with surge protection for photovoltaic systems

String combiner boxes for photovoltaic systems

String combiner boxes are required to provide optimal protection for photovoltaic systems against lightning strikes and overvoltages. Our ready-to-install string combiner boxes can be connected immediately, and are reliable system solutions that protect the inverter directly from DC and AC voltage inputs. Surge voltage couplings are discharged directly to the ground potential.

ImpulseCheck monitors type 1+2 special surge protection device in the main distribution

ImpulseCheck monitors type 1+2 special surge protection device in the main distribution

Testing and monitoring devices

ImpulseCheck is the world’s first intelligent assistance system for surge protection in the field of mains protection, allowing you to monitor your systems in real time. The system permanently records the state of the system. The state of health of the surge protection device is known at all times, so you can prevent a failure soon enough.

To manually test pluggable surge protection devices in accordance with the requirements of IEC 62305, use CHECKMASTER 2 as a mobile test device. Performing recurring precautionary checks will allow you to avoid failures of your systems and machines.

Isolating spark gaps for discharging overvoltages on an insulating flange

Isolating spark gaps for discharging overvoltages on an insulating flange

Isolating spark gaps

When overvoltages occur for a short period (for example, due to a lightning strike), isolating spark gaps connect metallic bodies which must not be permanently galvanically connected during operation. For  example, protect sensitive insulating flanges in pipelines against sparkover and avoid failures, downtimes or leaks.

Achim Zirkel – expert for surge protection

Achim Zirkel – expert for surge protection

Did you know?

New standards, the next lightning season, interesting trending subjects: Stay up to date, no matter what news there is to report in the field of surge protection. You can find it on our website, on LinkedIn, and also in our brochures. Keep a lookout for it, and look forward to many informative articles.