Power gas discharge tube P600GI
P600GI -a power gas discharge tube (GDT) designed for potential equalisation on the installation components of buildings or technological units, which are not electrically connected to each other (according to EN 62305: 2011). It is recommended primarily for bridging of insulated flanges and insulated threaded joints in the pipeline cathodic protected parts of industrial technology. If between these parts arise some potential difference greater than 600V, GDT immediatelly ignites for a temporary period and both parth electrically interconnects (typical internal resistance initialized P600GI is 0,001 ÷ 0,002 Ω). P600GI installation can be done inside buildings, in damp and underground spaces. P600GI functional part is made using a special gas dischage tube with shortened response time 20 nsec, designed for lightning current 100 kA (10/350). On the outer insulating cover is used a blue silicone rubber, which is hydrophobic and has excellent resistance against weathering, pollution and UV rays. Mounting bracket, connecting bolts and nuts are made from stainless steel, suitable for connection of conductors with cross section 16-50 mm2 Fe (Cu). The product is delivered with an integrated bracket, allowing direct mounting of P600GI to the protected metal structure (pillar, wall or flange).
|Classification acc. EN 61643‑11 a IEC 61643‑11||Type 1|
|DC sparkover voltage||UVDC||600 V ÷ 1000 V|
|Max. continuous operating voltage 50 Hz||Uc||255 Vrms|
|Nominal discharge current (8/20)||In||100 kA|
|Impulse current (10/350)||Iimp||100 kA|
|‑ charge||Q||50 Asec|
|‑ specific energy||W/R||2500 kJ/Ω|
|Follow current interrupting rating at Uc||Ifi||100 Arms|
|Protection level at at Iimp 1)||Up||< 1 kV|
|DC discharge current, 1 operation||400 A/0,5 sec|
|AC discharge current at 1200 Vrms (TOV) 2), 1 operation||300 Arms/0,2 sec|
|Response time 1)||tA||< 20 ns|
|Insulation resistance at 100 VDC||Riso||> 1 GΩ|
|Operating temperature range||‑ 40 °C ÷ + 90 °C|
|Total height including mounting bracket||h||187 mm|
|Weight||m||c. 620 g|
|1) Typical value
2) TOV - Temporary overvoltage
1) Product P600GI is maintenance-free, has very little reaction time (20nsec), high insulation resistance (> 1GΩ) and high protective ability. Next is this product resistant against to harsh treatment, acid rain and mechanical damage.
2) To perform diagnostics it is recommended to use measuring instrument G-TESTER (supplier ACER VOLTAGE s. r. o.). This device allows to control the one hand, the DC spark over voltage of the built GDT, then the value of the insulation resistance Riso (from 25VDC up to 1000VDC).