Surge protection

Surge Protection Devices (SPD) - an effective solution to control both atmospheric (due to lightning) and industrial (switching) overvoltages. SPD allows to protect the circuit and equipment to prevent an emergency situation and minimize the loss even in the event of a direct lightning strike to an object.

To ensure a truly reliable and effective protection, SPD should meet the following requirements:

  • Provide the required residual voltage;
  • Withstand surge current of the predetermined shape (up to partial lightning current);
  • Safely take pulse energy away.

Besides, do not forget that only SPD, chosen and installed in accordance with all regulatory requirements can protect against overvoltages.

The SPDs we offer allow to ensure your equipment operation even in hard industrial environments and to prevent their loss during a severe thunderstorm.

In accordance with the complexity of the problems of protection against overvoltage innovative solutions for each individual case, let it be protection of power networks (AC and DC), telephone lines or other information networks were developed.


1. Ready solutions for complex surge protection

Protection of a single family house

Protection of a single family house
It's not a secret that a properly executed external lightning protection system is able to protect your home from physical destruction in the result of a lightning strike. But it is not able to protect all devices and home appliances from damage due to exposure to pulse lightning surges. Special devices - SPDs  (the so-called internal lightning protection) are used for this purpose. Properly chosen and installed SPDs are able to take the dangerous overvoltage away, thereby preventing their impact on your equipment. 
Read on a separate page how to do it.


Protection of satellite TV

Protection of satellite TV
Due to the fact that satellite equipment in most cases is located on the roofs of buildings, it is particularly vulnerable to the effects of lightning and must be protected from flowing of lightning currents along them. Moreover, all cables placed inside of the building should also be protected from the secondary (induced) overvoltages.
A comprehensive solution to protect against these effects can be found on a separate page.


Surge protection for access control and burglar alarm systems

Surge protection for access control and burglar alarm systems
Any burglar alarm, intrusion detection and access control system (ACS), due to the extensive connections between the control panel and various sensors, or sensors, is particularly vulnerable to surges, caused as a result of a close lightning strike. Protection of such installations is particularly important at sites of special purpose, or non-supervised sites.
Read more on a separate page.


Overvoltage protection of the pipeline cathodic protection system

Overvoltage protection of the pipeline cathodic protection system
Cathodic pipeline protection is a modern and quite popular method of corrosion protection of the pipeline. Expensive monitoring and test equipment is used as a part of cathodic protection station, on the smooth operation of which depends the integrity of the system and piping.
In order to maximally protect such sensitive equipment from external influences such as atmospheric (lightning) and industrial overvoltages, we offer a unique comprehensive solution.


Surge protection. Individual development and manufacture

Surge protection. Individual development and manufacture
If necessary, we are always happy to offer the production of custom specialized surge arresters designed to protect specific signalling systems according to customer requirements. The proposal includes development of the project, implementation of test samples, testing in accordance with IEC 61643-21 and serial production.
Read more on a separate page.

Protecting of outdoor surveillance system

Protecting of outdoor surveillance system
The complex of measures of outdoor video surveillance system (CCTV) for the protection from surge overvoltages should include protection of both individual cameras and equipment located in the center of the video  surveillance (recorders, monitors, etc.). Overvoltage protection must be provided in the power supply circuit and in all signal lines (camera control, etc.). 
Read more on a separate page.


Protection of photovoltaic systems (solar panels)

Protection of photovoltaic systems (solar panels)
Installation of solar panels (photovoltaic system) is one of the most popular methods of autonomous (or additional) electrification of facilities.
Due to such rapid development of solar energy, the question of the system protection  from various negative influences is especially important.
As the solar panels are most often installed on the roof of a building or other open area, you must first provide them with lightning protection and surge protection.
You will find the package of measures we offer on a separate page.


Protection of wind generator installations

Protection of wind generator installations
Today, wind generator installations gain popularity as one of the most affordable and simple methods of autonomous electrification of facilities.
Wind turbines are usually installed in open areas at high altitude, in the result of what, they are particularly exposed to lightning impact. To ensure safe and reliable operation, they must be appropriately protected against overvoltage. 
You will find the package of measures we offer on a separate page.


Protection of fire alarm systems

Protection of fire alarm systems
In accordance with requirements from the series of lightning protection standards EN 62305, automatic fire alarm system can reduce the risk of fire associated with a direct lightning strike "only if they are protected against overvoltage and other damage» [IEC 62305-2].
Due to the fact that usually fire detectors are distributed over a large area, these systems are especially vulnerable to induced overvoltages. 
Read more on a separate page.


 

2. Surge protection of power supply circuits

SPD of class 1+2+3

SPD of class 1+2+3
Unique SPDs of class 1+2+3 both provide protection from direct lightning currents and induced surges (voltage pulse limit up to 1 kV). In small structures, the offered device may be a single overvoltage protection, in particular in GSM rooms, in container spaces and in individual houses.
See a complete list of devices on a separate page.


SPD of class 1

SPD of class 1
SPD of class 1 are designed to divert partial lightning currents and are installed if there is a risk of a lightning strike into the external lightning  protection of an object or an air line.
The most important characteristic of Class 1 arresters is their ability to drain Iimp lightning current  (pulse form 10/350 ms).
Link to a complete list of devices.


SPDs of class 2+3

SPDs of class 2+3
SPD of class 2+3 are used as a fine protection from secondary (induced) effects of lightning in the facilities where a flow of partial lightning currents is excluded or as the second protection stage (as SPD of class 1).
They limit voltage impulse to 1.5 kV, allow to save space in the local control switchboard.
Link to a complete list of devices.


SPD for use in DC networks

SPD for use in DC networks
Specialized SPDs for installation in DC networks with the working current up to 100 A and voltage up to 1000 V.
Link to the complete list of devices.

SPD of class 1+2

SPD of class 1+2
Combined devices for overvoltage protection (atmospheric and induced / switching) in single- and three-phase circuits with the voltage [230 / 400V] 50 Hz. 
They limit voltage impulse to 2 kV, allow to save space in the control switchboard. 
More details on an individual page.


SPD of class 2

SPD of class 2
SPD of class 2 are used as protection from secondary (induced) effects of lightning in the facilities where a flow of partial lightning currents is excluded or as the second protection stage (as SPD of class 1) to ensure a more effective protection.
We offer single and multi-pole SPDs, designed to protect low-voltage systems from surges in industrial, commercial and residential buildings. Link to the full list of devices.


SPDs of class 3

SPDs of class 3
SPD of class 3 are designed to protect against residual (after response of SPD of class 1 or 2) or repeatedly induced (at a long spreading of wires ) surges. They must be installed in close proximity to the protected device.
Link to a complete list of devices.

3. Surge protection in low-voltage circuits

Protection of control and measuring systems

Protection of control and measuring systems
Modern equipment used in various automation, management, measurement and control networks, typically has low resistance to surges.
To protect your equipment, we offer specialized series of SPDs. You can get familiarized with them on a separate page.


Protection of radio receivers and television (including satellite)

Protection of radio receivers and television (including satellite)
If there is a lightning rod on the roof of your house (especially if its functions are performed by a mast on which there is a TV antenna), it should be taken into account that the partial lightning current can flow in the TV signal transmission network. In this case, the equipment (eg, TV) can be seriously damaged. To eliminate this situation, you must install a special protective device in the circuit of TV signal transmission. 
You can get familiarized with them on a separate page.

Protection of data networks and telecommunication systems

Protection of data networks and telecommunication systems
Telecommunication networks are primarily required for the transmission of information, that is why, they require special protection schemes. SPD in these networks should not distort or affect the speed of the transmitted signal. They have to operate quickly even at very low  overvoltage values.
You will find SPD that meet all these requirements on a separate page.


Quick selection of SPDs to protect equipment in low-voltage networks

Quick selection of SPDs to protect equipment in low-voltage networks
Summary table of the main characteristics of SPD used in low-voltage networks. It allows to carry out fast selection of the required device.
Open the table on a separate page.

4. Separating arresters

Gas-filled separating spark arresters

Gas-filled separating spark arresters
This equipment is widely used in industry for surge protection of various engineering systems. For example, they are used in cathodic protection systems of the pipeline or for galvanic isolation of different pieces of equipment. 
You can get familiarized with a complete list of devices on a separate page.

 

LEUTRON. Certification in the territory of the EEU Customs Union countries

Certificate of compliance RU C-DE.АЛ32.В.06707 for the conformity of kits to the requirements 
of the Technical Regulations of the Customs Union ТР ТС 004/2011 "About security of low voltage equipment":

LEUTRON. Certification in the territory of the EEU Customs Union countries-1  LEUTRON. Certification in the territory of the EEU Customs Union countries-2  LEUTRON. Certification in the territory of the EEU Customs Union countries-3


Related Articles: