ETITEC : OVERVOLTAGE ARRESTERS - ETI - #2

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124 ETITEC Surge arresters Surge arresters ETITEC surge arresters are intended for protection of electrical installations and devices against overvoltage effects, which may occur in atmospheric discharges and switching overvoltages. The main part of surge arrester is ZnO non–linear varistor. Its main characteristic is ohmic non-linearity, which depends strongly on the applied voltage at the clamps. All arresters have modular construction, a special feature is interchanging varistor part and visual signalization for varistor thermical failure. The signalization performed with a red flag, which appears when failure occurs. The models with RC mark are equipped with auxiliary contacts for signalization. Surge arrester ETITEC group A ETITEC A are surge arresters for outdoor mounting. Group A overvoltage protection is in accordance with VDE class C. This protection corresponds to IEC category II. Protection is provided on power lines and is capable of discharging enormous pulse currents. In case of permanent arrester damage thermal protection will be activated. The protective component interrupts the circuit and a red plug indicates a faulty device (type A). After activation of disconnecting device earth conductor is visibly separated (type AQ). ETITEC A contains a decoupling device, which protects a module against short circuit condition and also signalizes a failure – a red plug springs out of the casing. ETITEC A type code No. weight packaging [g] [pcs] ETITEC A 10/275 002441310 130 3/60 ETITEC A 15/275 002441330 130 3/60 ETITEC A 10/440 002441315 130 3/60 ETITEC A 10/440 Al/Fe connection* 002441353 130 3/60 ETITEC A 15/440 002441335 130 3/60 ETITEC A 15/440 Al/Fe connection* 002441358 130 3/60 * Al/Fe connection for non isolated conductors ETITEC AQ contains a decoupling device, which protects a module against short circuit condition. The earth conductor is visibly separated. ETITEC AQ type code No. weight packaging [g] [pcs] ETITEC AQ 280/10 002442121 105 1/60 ETITEC AQ 440/10 002442221 105 1/60 ETITEC AQ 280/15 002442131 105 1/60 ETITEC AQ 440/15 002442231 105 1/60 Accessories type code No. weight packaging [g] [pcs] Connection clamp for non insulated conductors Al/Fe 002441941 170 3 Connection clamp for insulated conductor 002441942 430 3 Connection isolated conductors (only for A type) type code No. Al 16 mm2 1m 002441394 Al 25 mm2 1m 002441391 Cu 10 mm2 1m 002441392 Cu 6 mm2 1m 002441393 technical data on page 359