DV M2 TT 255 FM
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Product Data Sheet: DEHNventil modular + DV M2 TT 255 FM (954 315) ■ Prewired spark-gap-based type 1, type 2 and type 3 combined arrester consisting of a base part and plug-in protection modules ■ Compact unit meets maximum safety requirements thanks to Rapid Arc Control (RAC) ■ Capable of protecting terminal equipment Figure without obligation Basic circuit diagram DV M2 TT 255 FM Modular combined lightning current and surge arrester for TT and TN-S systems (3+1 configuration). Type Part No. SPD according to EN 61643-11 / IEC 61643-11 Nominal voltage (a.c.) (UN) DV M2 TT 255 FM 954 315 type 1 + type 2 + type 3 / class I + class II + class III Max. continuous operating voltage (a.c.) [L-N] (UC) Max. continuous operating voltage (a.c.) [N-PE] (UC (N-PE)) No tripping of a 32 A gG fuse up to 50 kArms (prosp.) Max. backup fuse (L) up to IK = 50 kArms Temporary overvoltage (TOV) [L-N] (UT) – Characteristic Temporary overvoltage (TOV) [N-PE] (UT) – Characteristic Lightning impulse current (10/350 µs) [L1+L2+L3+N-PE] (Itotal) Specific energy [L1+L2+L3+N-PE] (W/R) Lightning impulse current (10/350 µs) [L-N]/[N-PE] (Iimp) Specific energy [L-N]/[N-PE] (W/R) Nominal discharge current (8/20 µs) [L-N]/[N-PE] (In) Voltage protection level [L-N]/[N-PE] (UP) Open-circuit voltage of the combination wave generator (UOC) Follow current extinguishing capability [L-N]/[N-PE] (Ifi) Follow current limitation / Selectivity Short-circuit current rating [L-N]/[N-PE] (ISCCR) Let-through energy with an S20K275 (Iimp = 2.5 to 25 kA) Operating temperature range [parallel] / [series] (TU) Operating state / fault indication Number of ports 2 Place of installation / Degree of protection Type of remote signalling contact Cross-sectional area for remote signalling terminals Voltage protection level [L-PE] (UP) For use in switchgear installations with prospective short-circuit currents of more than 50 kArms (tested by the German VDE) – Max. prospective short-circuit current – Limitation / Extinction of mains follow currents – Max. backup fuse (L) up to IK = 100 kArms Extended technical data: © DEHN SE + Co KG ∙ Hans-Dehn-Str. 1 ∙ 92318 Neumarkt ∙ Tel. +49 9181 90

Product Data Sheet: DEHNventil modular Use for 16.7 Hz traction power supply systems Type Part No. – Test voltage AC (UC) Customs tariff number (Comb. Nomenclature EU) GTIN PU We reserve the right to introduce changes in performance, configuration and technology, dimensions, weights and materials in the course of technical progress. The figures are shown without obligation. © DEHN SE + Co KG ∙ Hans-Dehn-Str. 1 ∙ 92318 Neumarkt ∙ Tel. +49 9181 906-0 ∙ https://www.dehn.de 3, : Tested +: New (: Discontinued Model