Rod gap arrester
This kind of lightning arrester is a very simple type of diverter and consists of two 1.5 cm rods, which are bent at right angles and positioned with a gap in between as shown in Fig. One rod is connected to the line circuit and the other rod is connected to earth. The distance between gap and insulator (i.e. distance P) must not be less than one third of the gap length so that the arc may not reach the insulator and damage it. Generally, the gap length is so adjusted that breakdown should occur at 80% of spark-voltage in order to avoid cascading of very steep wave fronts across the insulators. The string of insulators for an overhead line on the bushing of transformer frequently uses a rod gap across it. Fig. 8 shows the rod gap across the bushing of a transformer. Under normal operating conditions, the gap remains non-conducting. On the occurrence of a high voltage surge on the line, the gap sparks over and the surge current is conducted to earth. In this way excess charge on the line due to the surge is harmlessly diverted from the transformer.
Limitations
- After the surge is over, the arc in the gap is maintained by the normal supply voltage, leading to short-circuit on the system.
- The rods may melt or get damaged due to excessive heat produced by the arc.
- Weather conditions (e.g. rain, humidity, temperature etc.) can affect the performance of rod gap arrester.
- The polarity of the surge also affects the performance of this arrester.
Due to the above limitations, the rod gap arrester is only used as a back-up protection in addition to more adequate arresters that are also present.
CREATED FOR YOUR SAFETY
LIGHTNING PROTECTION SYSTEMS
SCHIRTEC E.S.E LIGHTNING CONDUCTORS ARE PRODUCTS THAT DO NOT INCLUDE RADIOACTIVE MATERIALS BUT PROTECT LARGE FIELDS FROM ONE POINT BY BECOMING ACTIVE WITH THE LIGHTNING RISK DUE TO INCREASING ATMOSPHERIC, ELECTRICAL FIELD EFFECT IN LIGHTNING WEATHERS.
THE HEAD PART OF E.S.E LIGHTNING CONDUCTORS ARE FORMED BY FOUR MAIN PARTS:
AIR TERMINAL
ION GENERATOR
ACCELERATOR AND ATMOSPHERIC ELECTRODES
GROUNDING CONNECTION TERMINAL
AIR TERMINAL
THE AIR TERMINAL HAS ENOUGH SIZE AND QUALITY TO CONDUCT THE BIGGEST LIGHTNING STRIKE.
ION GENERATOR
THE GENERATOR IS LOCATED INSIDE OF A SPECIAL EPOXY RESIN IN ORDER TO PROTECT THE ION GENERATOR FROM DIFFERENT ENVIRONMENTAL CONDITIONS.
ACCELERATOR AND ATMOSPHERIC ELECTRODES
ARE DESIGNED IN A WAY THAT CAN BE CHARGED WITH DIFFERENT POTENTIALS AND WITH THIS FEATURE, IT AIMS TO MAKE WORK THE ELECTRODES AS BOTH ADDITIONAL IONIZATION PRODUCING RESOURCE AND AS ACCELERATOR.
THE REGULATION IS MADE WITH THE NUMBER OF THE ELECTRODES AND ION GENERATOR'S IMPEDANCE THAT MAKES THE DIFFERENT PROTECTION CAPACITIES OF THE SCHIRTEC E.S.E. LIGHTNING CONDUCTOR.
GROUNDING CONNECTION TERMINAL, MAKES THE GROUND CONNECTION OF THE HEAD, AT THE SAME TIME CONNECTION WITH THE ROOF POLE IS PROVIDED WITH A PIPE WHERE THE TERMINAL EXISTS OR IS CONNECTED.
THE PRODUCT OF SCHIRTEC E.S.E. LIGHTNING CONDUCTORS ARE PRODUCED WITH COMPLETE RUSTPROOF MATERIALS AND THIS FEATURE IS SUPPORTED BY A TUV CERTIFICATE.
PRODUCT'S LIGHTNING CURRENT CARRYING CAPABILITY IS TESTED IN BET LABORATORY AND CTI VIENNA.
EARLY IONIZATION TIME AND EARLY IONIZATION WAY IS DOCUMENTED BY THE TESTS MADE IN ICMET LABORATORY.
THE MOST IMPORTANT FACTOR IN SCHIRTEC E.S.E. LIGHTNING CONDUCTOR IS THE PROTECTION RADIUS. IT DEPENDS ON THE LEVEL CALCULATION.
IT COMES WITH DIFFERENT LEVELS OF PROTECTION DEPENDING ON YOUR REQUIREMENT.
INVEST IN A LIGHTNING ARRESTER ESPECIALLY IF YOUR AREA IS/ARE PRONE TO LIGHTNING STRIKES...
PROTECT YOUR
HOME
FAMILY
PETS
EQUIPMENT
BUSINESS
FACTORIES
APPLIANCE
BEFORE IT IS TOO LATE....
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DURING LIGHTNING STRIKES....
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It is unwise to pay too much, but it's worst to pay too little.
When you pay too much, you lose a little money - that is all...
When you pay too little, You sometimes lose everything,
Because the thing you bought or the service you acquired
was incapable of doing the thing it was bought or intended to do.
The common law of business balance
prohibits paying a little and getting a lot - it can't be done.
If you deal with the lowest bidder,
It is well to add something for the risk you run, And if you do that,
You will have enough to pay for something better." - Sir JOHN RUSKIN(1819 - 1900)
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