Solution for a complex protection against overvoltage of the system of cathodic pipeline protection

Cathodic pipeline protection - is a modern and quite popular method of corrosion protection of the pipeline. Today cathodic protection stations (CPS) not only brilliantly perform their direct functions, but also allow to monitor the state of the pipeline, carry out remote management and adjustment of the system. Expensive test and measuring equipment is applied to provide all these possibilities, on the smooth operation of which depends the integrity of cathodic protection stations and the whole pipeline.

In order to maximally protect such sensitive equipment from external influences such as atmospheric (lightning) and industrial overvoltages, we offer a unique integrated solution.

Our complex takes into account all the possible ways of overvoltages penetration into the cathodic protection system and consists of the following measures:

1. protection of low voltage network (low-voltage power supply);
2. protection of low-current systems (networks of supervision, management and monitoring, DC anode power supply);
3. pipeline protection:
   • arresters of potential equalization (mounted on the insulating pipeline flanges);
   • protection against lightning overvoltages and industrial frequency pickups (from the adjacent high-voltage lines and railway facilities).

• Complex approach - we consider all possible ways of overvoltages penetration into cathodic protection system;
• Universal devices > - allow to combine several types of protection in a single package ; this provides compact placement and cost savings;

• Unique characteristics - our devices limit the overvoltages up to the maximally safe levels;
• convenience - understanding the complexity of organization of long pipeline protection, we offer a system equipped with a remote control function that does not require maintenance and has a long service life.

Pipeline protection from lightning overvoltages and industrial frequency pickups

It often happens that the pipeline is in close proximity to the transmission lines or from the railway. Both systems have a negative impact on the cathodic protection system, because they induce a malicious AC voltage in itthat sometimes exceeds CPS power voltage.

In cooperation with SWISSGAS (Switzerland), a deviceLEUTRON PLPro (PipeLineProtection) was developed. It provides induced alternating currents drainagethus ensuring protection against this type of threat.

Furthermore, PLPro includes protection from direct effects of lightning. A special gas-filled surge arrester is able to drain current up to 100 kA (10/350 ms).

And as PLPro requires no maintenanceinvestments for its installation very quickly pay off.

Type	Rated drained current (50 Hz)	Product item
PLPro-40A	40 A	LE-550-440
PLPro-80A	80 A	LE-550-441

Low-voltage power supply network protection

Combined SPD of class 1+2+3 is the best choice to protect CPS from the power supply side. It combines 3 classes of protection: provides protection level of less than 1000 V and is resistant to lightning currents of up to 100 kA (10/350 ms). SPD of class 1+2+3 can be installed in 1 and 3-phase circuits, in TN-C, TN-S, TT systems. Single-pole performance is also possible - for the protection of individual contact lines (L, N).

Arresters for potential equalization

Certified explosion proof spark arresters TC 100 A andTC 500 A equipped with the patented brand new system fail-safe (Safety of the user and the system in case of arrester damage) and comply with the most stringent international standards (have marking of explosion protection Ex in accordance with the ATEX directive).

Type	Static pickup voltage	Product item
TC 100	100±20% V	LE-487-830
TC 500	500±15% V	LE-487-850

Protection of low-current systems

Specialized series of devices are designed for use in low-current systems CPS , they are called EnerPro (protection of DC plate supply) and DataPro (protection of signal lines)resistant to pulsed currents of up to 40 kA (8/20 ms). This condition is a necessary requirement for the protective devices used in the system of cathodic protection.

Individual selection

In case if your cathodic protection system has atypical characteristics or has unique patrameters, you can always contact our technical center.

The extensive range of the SPDs we offer allows us to choose an individual protection complex that meets all the requirements of reliability and efficiency.

УЗИП для применения в сетях питания и контроля

Уникальное комбинированное УЗИП с очень низким напряжением ограничения, предназначено для применения в трехфазных сетях с режимом нейтрали TN-S (TN-C-S) напряжением 220/380 В, 50 Гц., 50 Гц.

Защита от перенапряжения для линий питания постоянного тока с рабочим напряжением до 65 В.

• Высокая эффективность защиты от перенапряжений;
• 3-ступенчатая защита от импульсных перенапряжений включает в себя газонаполненные разрядники (GDT) и варисторы (MOV);
• монтируется на DIN рейку;
• дополнительный встроенный термодатчик и дистанционная сигнализация состояния (/FM).

Защита от перенапряжений для электронного оборудования с рабочим напряжением 50 В DC. Выдерживает импульсный ток 20 кА (8 / 20 мкс). Устройство предназначено для чувствительной электроники.

• Высокая эффективность защиты от перенапряжений;
• защита для сигнальных и информационных линий;
• максимальный номинальный ток 100 мА;
• монтрируется на DIN рейку;
• включает низкочастотный фильтр.

УЗИП для защиты трубопровода

Разрядник разделительный TC 100/TC 500

• Выполнен из высококачественной промышленной керамики;
• разрядник заполнен инертным газом, герметично изолирован;
• очень низкое напряжение пробоя;
• высокая устойчивость к молниевым токам: 100 кА (10/350μs);
• двухуровневая система отказоустойчивости (fail-safe) для обеспечения максимальной безопасности;
• TC 100 A/K1 (включает кабель для подключения)

PLPro

• Номинальное отводимый ток от 40А ;
• включает защиту от прямого воздействия молнии до 100 кА (10/350 мкс);
• устойчив к высоким значениям блуждающих токов;
• высокая надежность и длительный срок службы;
• необслуживаемый, нет токов утечки.

Купить

Ознакомиться с действующими ценами и приобрести необходимые устройства для защиты от импульсных перенапряжений можно в удобном интернет-магазине на отдельной странице "Купить".