3UF5 SIMOCODE-DP System Motor Protection and Control Device

The 3UF50 Basic UnitType of protectionEEX eExampleThe SIMOCODE-DP 3UF5 system conforms to the regulations for the overloadprotection of explosion-protected motors of the "increased safety" typeof protection EEx e DIN EN 50 0019 / DIN VDE 0165, DIN VDE 0170/0171 andto the PTB test regulations.In the case of tripping units with DC operation, electrical isolation must beensured by a battery or safety isolating transformer conforming toDIN VDE 0551.Separate monitoring of the control supply voltage is recommended if theSIMOCODE-DP 3UF5 system is used with parameterized bistable behaviourof the output relays (Order No. 3UF50..-3..10-1) for the protection of motorswith increased safety.PTB test report no. 3.53-14605/96.Protection of motors in potentially explosive atmospherest E12010050201052150201051510CLASS 5CLASS 302520Example:Motor 400 V, 50/60 Hz, 1.5 kW, 3.3 At E time where T3 = 21 sI A / I N = 6.5Critical firing point,selected: Class 102t A10,7x I e1 2 5 8I A / I NFig. 20: Protection of motors in potentially explosive atmospheresOriginal trippingcharacteristicsYou can request the original tripping characteristics (precision ± 10 %), especiallyfor EEexe applications, fromSiemens AGA&D CD SV TGP 2Tel.: ++49-9621-80-2127Fax: ++49-9621-80-3141GWA 4NEB 631 4286-02a 2-13