LLPD dC20z up to 24 kV
This device has been specifically developed for the protection of overhead distribution lines from direct lightning strikes, back flashovers and induced overvoltages.
- Protection against:
Induced overvoltage,
Back Flashover
- Highest voltage for equipment, kV24
- Maximum prospective fault current, kA5.0
- Lightning discharge capability, C2.8
- Installation1, 2 or 3 pcs per pole
LLPD dC20z is aimed to provide cost-effective and innovative lightning protection of overhead power lines. It means that with these devices installed your power network will be secure from direct lightning strikes, back flashovers and induced overvoltages and damage caused by their deleterious consequences.
This device is a representative of the range of products by Streamer, which has been specifically developed for the protection of overhead distribution lines from direct lightning strikes, back flashovers as well as induced overvoltages. It helps to keep power distribution lines safe from insulator/conductor breakages, switchgear trips, and outages.
Electrical line parameters
Lightning parameters
General Parameters
* According to IEC 60038, ** According to IEC 60071-1, *** According to IEC 60099-8, **** According to ISO 4892-2, method A, IEC 62217
Highest voltage for equipment*, kV | 24 |
Maximum prospective fault current, kA | 5 |
External air gap, mm | 60-80 |
50% flashover voltage (80 mm air gap), kV | <185 |
Power frequency withstand voltage**, kV (wet/dry) | 40/50 |
Lightning parameters
Lightning discharge capability (200 μs)***, C | 2.8 |
High current impulse (4/10 μs), kA | 65 |
Maximum quenching lightning current, kA | 20 (8/50µs) |
Minimum withstand amount ofoperations | 10 |
General Parameters
Additional power losses on the line, % | 0 |
Average expected lifespan, years | 30 |
UV resistance****, h | 1000 |
Weight, kg | 2.6 |
Maintenance | 1 visual verification/year |
* According to IEC 60038, ** According to IEC 60071-1, *** According to IEC 60099-8, **** According to ISO 4892-2, method A, IEC 62217
The i20z’s works due to the EasyQuench technology.
This innovative operating principle ensures a high ability to discharge excessive energy of an overvoltage in the surrounding atmosphere.
The induced overvoltage will create an electrical power arc between the terminal electrode of an LLPD and the conductor clamp on a line. At first, the arc will be divided by a series of discharge chambers into a series of small arcs, which afterward are quickly quenched when the oscillating current of the grid crosses zero.
This innovative operating principle ensures a high ability to discharge excessive energy of an overvoltage in the surrounding atmosphere.
The induced overvoltage will create an electrical power arc between the terminal electrode of an LLPD and the conductor clamp on a line. At first, the arc will be divided by a series of discharge chambers into a series of small arcs, which afterward are quickly quenched when the oscillating current of the grid crosses zero.
Examples of installation methods