Industrial plants and building infrastructures are becoming increasingly complex. This makes them more sensitive to surge damage. In addition, digitalisation is increasing the number of connections and data streams that must not be interrupted. Reliable lightning and surge protection ensures system availability, protects against data loss and increases added value.
Weidmüller has had standard-compliant lightning and surge protection products in its range for many years and develops customised surge protection solutions with maximum reliability. The proven surge protection devices of the VARITECTOR series are available for power systems, I&C components, and data interfaces.
VARITECTOR surge protection devices reliably prevent lightning and surge damage. They comply with international standards and offer maximum investment protection.
VARITECTOR surge protection devices are space-saving and easy to install. They meet all requirements for risk minimisation, increased efficiency and future-proofing.
VARITECTOR surge protection devices allow fuseless operation up to 315 A, have a prewarning indicator and optionally a remote signalling contact for easy function monitoring.
The VARITECTOR PU AC BS60 protects electronic components and devices in larger distribution cabinets and is snapped tool-free onto the 60 mm busbar systems. The components are available as a leakage current-free variant or as a variant with an integrated fuse.
The new monobloc components of the VARITECTOR PU PV series are designed to protect PV applications with generator voltages from 600 V up to 1,500 V. They comply with latest EN standards for global use. They also combine reliable surge protection with future-proof performance - a must to maximise system uptime and profitability.
The proven surge protection devices of the VPU series type I with 25 kA are also available in versions with integrated back-up fuse. This eliminates the need for an additional back-up fuse upstream of the SPD. Application-specific product configurations are available for the different network types.
Our VARITECTOR PU AC type I+II are used in industrial plants as well as private and public buildings. The growing number of sensitive devices requires ever better lightning and surge protection for power feed-ins.
Surge protection is a mandatory component in all commercial and private real estate according to DIN VDE 0100-443 und -534. The space-saving installation on the 40 mm rail system guarantees the best protection with the smallest space requirement.
Data interfaces are extremely sensitive. So they must be particularly well protected against overvoltages. At the same time, it is essential to ensure there is no negative influence of the suppressor circuit on the data transmission.
PV systems are exposed to a variety of influences due to their installation in exposed locations. Our PV arresters of the VPU PV series protect PV systems against surge damage. They also fulfil the requirements of DIN EN 60364-7-712 / VDE 0100-712.
Technical know-how for energy applications
Exciting facts, comprehensive information and valuable tips for the reliable protection of your electrical systems and devices! Discover our knowledge platform on the technical know-how of lightning and surge protection for energy applications.
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Protection against lightning and surges is an existential and normative requirement for the construction of new buildings, plants and energy systems. This is also a matter of course for GFR.
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Get to know our VARITECTOR PU S-Line – safe, efficient and extremely space-saving! You will find out more about our innovative phase HAD-technology.
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In this video you will find out what surge protection is, what types of surges exist and what they can cause.
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In this video you will find out more about the components of surge protection devices and how they works.
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In this video you will find out how to select the right lightning and surge protection device for your installation and about the different installation locations and arrester types.
Typical damages following a lightning strike or surge pulse include, for instance, outlets or cables popping out of the wall, charred or burned SMD components, or even fires in the worst case scenario.
Complete protection can be achieved only if both power lines, data and signal lines are protected using a surge protection device (SPD). In addition, it is important to have a uniform reference potential.
Because the use of SPDs (Surge Protection Devices) is required by applicable standards!
In addition to the general lightning protection standard VDE 0185-305 (DIN EN 62305), the two parts DIN VDE 0100-443 (IEC 60364-4-44) and -534 (IEC 60364-5-53) apply. These standards explicitly describe WHEN surge protection must be used, WHERE it should be installed, and HOW to correctly install it.
The power feed-in and distribution area is an important part of surge protection. Protecting the supply lines is the basis for protecting all electrical and electronic components, even down to the smallest and most sensitive parts.
In general, SPDs (Surge Protection Devices) must always be installed where cables feed into the control cabinet – parallel to the power feed-in and with the shortest cable path possible.
Lightning and surge protection may only be installed, put into operation and maintained by qualified electricians who are familiar with national and international laws, regulations and standards.
If surge protection equipment is damaged or exhibits other faults, it must not be installed. If there is a red status indicator, the device must be replaced by a specialist. Opening the surge protection device is not permitted. To complete the insulation test, the SPDs (Surge Protection Devices) must be disconnected from the system for the duration of the measurement, for instance by pulling out the plug-in arrester, or the product must be completely disconnected from the network.
A surge protection arrester is a device that protects electrical power systems from damage caused by lightning and surge voltage. In normal operation, surge protection is a passive component and has very high impedance. The arrester only becomes conductive in the case of surge voltage, so that power from the surge pulse can flow to the ground.
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