Power Protection General


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Effective Power Protection Systems provide security according to VDE 0100 part 430 and DIN VDE 0185 part 1 in Consumer Systems

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Power Protection General

  1. 1. Proposal for Installation of power protection , effective guard against power fluctuations, over – voltage, transient voltage and Lightning protection according to DIN VDE 0100 part 430 and DIN VDE 0185 part 1
  2. 2. <ul><li>We undertake the evaluation, planning, and installation of power protection equipment, known as N-Valve and S-valve on location at aforementioned premises. </li></ul><ul><li>Equipment is exclusively manufactured in the E.U. and carries a </li></ul><ul><li>24 months mandatory warranty, covering defects arising from power </li></ul><ul><li>fluctuations and lightning. Not covered is the unauthorized tampering and re-installation by unauthorized personnel </li></ul><ul><li>Procedures : </li></ul><ul><li>The assigned contractor will inspect the premises and conduct a thorough </li></ul><ul><li>Test with applicable instruments, the results of which will be presented to the </li></ul><ul><li>Person-in-charge </li></ul><ul><li>Equipment specifications : </li></ul><ul><li>N-valves : </li></ul><ul><li>Dimension : 116 x 90 mm, solid state variable resistors </li></ul><ul><li>Technical Specifications: </li></ul><ul><li>Tested according to DIN VDE 0675-6 </li></ul><ul><li>Maximum permissible operating Voltage single PH: 280 V </li></ul><ul><li>Lightning surge : 100 000 Amp </li></ul><ul><li>Protection level : 2500 Volts </li></ul>
  3. 3. <ul><li>Lightning impact spark-over voltage : 4 000 V </li></ul><ul><li>Pre-Protection in TNS grids : 100 A </li></ul><ul><li>Short-circuit stability with 100 A fuse : 25 000 A </li></ul><ul><li>Operating temperature range : 40 -80 degrees C </li></ul><ul><li>Including remote recording fault contacts, normally closed </li></ul><ul><li>AC 250 V/ 0.5 A, DC 250 V/ 0,1 A </li></ul><ul><li>Conductor : max 50 mm square </li></ul><ul><li>Mounted on DIN EN50022 rail </li></ul><ul><li>Housing, Master control </li></ul><ul><li>Application, Design : </li></ul><ul><li>The N-valve is used for lightning/over voltage protection of subsequent electrical installations, also for protection against direct lightning. The combined N-Valve is conceived in conformity with classes B and C for lightning protection equipotential bonding according to DIN 0110-1. The unit is a four pole arrester, with a circuit containing varistors arranged in parallel and lightning-circuit-proof spark-gaps. The varistors alone are able to discharge surge currents in the range of some 10 000 A (waveform 8/20). The energy at higher surge currents (direct lightning strike) is discharged by the integrated spark gaps. This causes the spark-gaps to blow out (quenching chamber openings at the rear of the housing), which means that special installation conditions must be complied with (section 7). </li></ul>
  4. 4. Safety instructions <ul><li>The N-Valve is only to be installed by qualified technicians in accordance with DIN regulations, its use is only permitted under the conditions stated and as shown in this instructions. </li></ul><ul><li>Especially note that the opening and otherwise tampering with the equipment is not allowed for safety reasons and invalidates the warranty </li></ul>
  5. 5. Financial Cost <ul><li>Provisions include the following assumptions : </li></ul><ul><li>Installation of 3 Unit N-Valve at the premises and cover the </li></ul><ul><li>entire premises effectively </li></ul>
  6. 6. <ul><li>Installation is preceded by extensive measurements carried out by us. </li></ul><ul><li>S-Valves will be mounted where applicable </li></ul><ul><li>Special installation conditions apply </li></ul><ul><li>Solid state design ensures a long lifespan of equipment </li></ul><ul><li>Inspection 1 year free. Tempering by third parties will </li></ul><ul><li>Void warranty. </li></ul><ul><li>The installation will be carried out by experts, the </li></ul><ul><li>equipment will be supplied by Safrigro S.A. </li></ul>