Internal lightning conductors=overvoltage protectors connected between phases and the ground, and neutral loads and the ground in low voltage systems, switch to conduction in case of an impact and absorb the instantaneous overvoltage onto themselves. They take on the impulse voltages to which the system would be exposed.
• Type 1 = Class B Protection Products
Type 1 products have been designed to limit the effects of high-power lightning impacts, and generally operate with spark gap technology. They are used at the closest point to a low voltage supply line of a facility with a lightning rod or at a distance of 50m, and prevent damage to main supply points caused by lightning discharges. It is possible to individually protect each phase with unipolar manufactured modules. When the impulse voltage to which they are exposed reaches the critical value, they absorb this high voltage themselves and conduct it to the ground.
• Type 2 = Class C Protection Products
Placed on each distribution panel in an installation to protect against internally produced overvoltages, Type 2 = Class C overvoltage protectors operate with MOV (metal oxide varistor) technology, and are used against lower level impulse voltages for additional protection purposes. The overvoltages that switch in this way are reduced to acceptable levels.
• Type 1+2 = Class B+C Protection Products
In some facilities (GSM base stations), the distance between class B and C catchers can be shorter than it should be (container scale facilities). In such case, either inductive coupling is used or combined B+C protection sets, including class B and C protection, are preferred to enable coordination between elements.
• Type 3 = Class D Protection Products
An adapter-type protection module has been developed to meet the protection requirements of various devices. Thanks to its structure, the adapter is connected to the system easily, and enables an effective protection at ultimate device level. A protection circuit combining a varistor and gas arrester protects the connected devices against network harmonics. Varistors can become over-loaded due to very high or very frequent voltage impacts. As a result, the residual current might increase in the components within the circuit, leading to heating. A thermal separator connected to the varistor is mounted to prevent excessive heating of these components.
• Coaxial and Antenna Line Protectors
These are the modules that have been specifically designed for the protection of receiving and transmitting stations in the communication systems. They enable the protection of antenna input against instantaneous voltage flow impacts. They have a very wide field of application for the multiple input-output and wide-range radio communication systems of police and fire departments.
• Protection of Data Lines
In applications where signal transmission is handled through a coaxial cable, such as computers, data processing systems, or video systems, adapter modules with BNC connectors are recommended to prevent damage on devices caused by impulse voltages. This product can operate both grounded or floating. External grounding can be performed on the device. The protection circuit is placed in a metal case with BNC connection.