Control- and safety isolating- resp. isolating transformer ST 250/69/23 Advantages Very good switch-on behaviour thanks to reduced starting currents High performance for the volume thanks to compact design Primary side 5 % tappings for voltage adjustment Very good corrosion protection and low noise thanks to BLOCKIMPEX vacuum impregnation Contact protected screw connection terminals complying with UVV BGV A3 Simple mounting thanks to robust metal footplate with oval slots Applications As a control transformer for the electrical isolation of the input and output sides.The construction of the transformer to supply control systems according to VDE 0113 is designed. As an isolating transformer for the safe electrical isolation of the input and output sides. The transformer may be used to set up protective separation as a protective measure in accordance with VDE 0100. As a safety isolating transformer for the safe electrical isolation of the input and output sides. The transformer is suitable for creating SELV and PELV circuits because of the limit on the output voltage. Standards |"Z Isolating transformer to: VDE 0570 Part 2-4, DIN EN 61558-2-4, EN 61558-2-4, IEC 61558-2-4 Control transformer to: VDE 0570 Teil 2-2, DIN EN 61558-2-2, EN 61558-2-2, IEC 61558-2-2 Approvals Z Control- and safety isolating- resp. isolating transformer ST 250/69/23 ST 250/69/23 Rated input voltage Tappings Input Rated frequency 690 Vac 5 % 50 - 60 Hz Output Rated output voltage Rated power VDE (DB cos phi=1) Rated power VDE (KB cos phi=0.5) No-load voltage (app. x factor) Efficiency Type ST 250/69/23 Terminal and mounting Screw-type terminals, PE 6.3 x 0.8 Base plate M5 Terminals Fixing method Fixing screws Measures and weights 230 Vac 250 VA 555 VA 1.08 90 % 3.50 kg Weight 61.0 Standards Classification Control- and isolating transformer Approvals Approvals - 105.0 Environment Ambient temperature max. Cooling method 40 C by self-cooling Safety and protection Type Class of Insulation System Protection index Safety class (prepared) Short circuit strength open type B IP 00 I non-short-circuit proof 84.0 96.0 86.5 103.0 PRI Fusing recommendation by circuit breaker with tripping characteristic type 20 x Irated related to set) Setting range Setting value 0.40 - 0.63 A 0.43 A Order numbers Order Number ST 250/69/23 Subjects to change. + Input 30 Type