Lightning protection of overhead power transmission and distribution lines is a very serious business. In addition, costs of lightning protection devices can be considerable. EasyQuench (EQ) technology makes it possible to purchase and install affordable lightning protection system components that are reliable, easy to install and require no additional accessories for operation. Say goodbye to all conventional solutions, and hello to this revolutionary new EasyQuench system technology.

    How EQ works

    STREAMER has developed a relatively simple, but very reliable technology that helps to protect distribution and transmission power lines from overvoltages caused by direct and indirect lighting strikes. This lightning protection system is capable of withstanding both direct and induced lightning impact.

    • When a surge appears on a line, electrical arc establishes between the line and the installed line lightning protection devices
    • The arc then gets inside the so-called EasyQuench system – numerous spherical electrodes inside silicone rubber and divides into a large number of small arcs burning between each pair of metal electrodes
    • In fact, a pair of metal electrodes acts like a tiny discharge chamber, so each arc is blown out into the ambient air
    • Thus, the energy of the arc (and lighting impact) is being dissipated with the help of EasyQuench system, and a line remains in operation without suffering an outage
    Diagram of discharge initiation Diagram of discharge completion

    1. Silicon rubber shape

    2. Intermediate electrodes

    3. Arc quenching chamber

    4. Discharge chamber


    EQ products

    STREAMER offers a variety of different products in order to meet all customers’ needs; whether they require residential, commercial or industrial lightning protection. We provide products that are intended for protection against both induced overvoltages and direct lighting strikes. Each have their own unique benefits. We provide several different models within each category as well.

    Induced overvoltage

    Induced overvoltages are responsible for roughly eighty percent of power outages that are caused by lightning. Devices (SAi devices) specifically designed to tackle this issue are able to eliminate deleterious consequences of induces overvoltages such as covered conductors burn down as well as short circuits.

    Induced overvoltage protection devices can be easily installed and do not require any specific footing resistance or additional grounding arrangement. Typical installation scheme requires that each pole is equipped with one device with phase alternation.

    We offer the following products for protection against induced overvoltages:

    • Line Lightning Protection Device for 10 kV overhead distribution lines (intended for nominal system voltage up to 15 kV)
    • Line Lightning Protection Device for 20 kV overhead distribution lines (intended for nominal system voltage up to 24 kV)
    • Line Lightning Protection Device 20 kV OHL with high prospective follow current up to 3.5kA (also intended for up to 24 kV)

    Direct lighting strikes

    While overvoltages caused by direct lightning strikes are only believed to be responsible for roughly twenty percent of power outages, they should still be taken very seriously. They are caused by a direct lightning strike in either conductor, pole, or shielding wire.

    Direct lightning strike protection is more commonly necessary in areas with high levels of lightning activity. This type of overvoltage can cause much more serious damage than an induced overvoltage, as the energy contained in each surge is considerably higher.

    The SAd device can be installed on some specific sections of overhead lines that are especially subject to direct lighting strikes and should as well be installed within the last 3 or 4 spans before substations. Maximum effectiveness of their utilization can be achieved together with conventional Metal Oxide Arresters. When installed close to a substation, SAd devices must be properly grounded with the footing resistance level not exceeding 10 Ohm.

    We offer the following three products for protection against direct over-voltage:

    • Line Lightning Protection Device for 20 kV overhead distribution lines (intended for nominal system voltage up to 24 kV)
    • Line Lightning Protection Device for 35 kV overhead distribution lines (intended for nominal system voltage up to 40 kV)
    • Hybrid Line Lightning Protection Device SI-G (intended for nominal system voltage up to 110 kV)