Control- and safety isolating transformer
STSU 800/24 - Discontinued types – not for new designs
Characteristics
Benefits
› Dual input voltage 230 and 400 Vac
› Quick to cable up thanks to the use of screw terminals
› Very good switch-on behaviour thanks to reduced starting currents
› Up to 250 VA with combination footplate for bolted and rail mounting
› Very good corrosion protection and low noise thanks to BLOCK IMPEX vacuum impregnation
› Contact protected screw connection terminals complying with UVV BGV A3
› Simple mounting due to robust metal footplate with oval slots
› 63 - 250 VA with combination footplate for bolted and rail mounting
› Primary side ±15 V tappings for voltage adjustment
| Product (Headline_Detailseite) | Control- and safety isolating transformer |
| Order number (PF_Teilenummer) | STSU 800/24 |
| Series (PF_Baureihe) | STSU |
| Power (PF_Leistung_VA_W) | 800 VA |
| Input (PF_Trafo_Eingang) | 230 V / 400 V ± 15 V |
| Output (PF_Trafo_Ausgang) | 2 x 12 V • 33.3 Aac |
| Phases (PF_Phasen) | 1 |
| Frequency range (PF_Frequenzbereich) | 50 Hz to 60 Hz |
| Short-Circuit Losses (PF_Kurzschlussverluste_W) | 37.3 W |
| No-Load Losses (PF_Leerlaufverluste_W) | 18.7 W |
| Short-Term Power / instantaneous output (PF_Kurzzeitleistung_VA) | 3,400 VA |
| Short circuit voltage uk (PF_Kurzschlussspannung) | 4.8 % |
| EN Insulation class (PF_EN_Isolierstoffklasse) | B (130°C) |
| UL Insulation class (PF_UL_Isolierstoffklasse) | class 130 |
| Duty Cycle (PF_Einschaltdauer) | 100 % |
| Wire material (PF_Leitermaterial) | Copper |
| Efficiency (PF_Wirkungsgrad) | 93.5 % |
General
| Short circuit proof (PF_Kurzschlussfestigkeit_KS_Festigkeit) | not short-circuit proof |
| Switching group (PF_Schaltgruppe) | Iii0 |
| Shield winding (PF_Schirmwicklung) | Yes |
| Cooling type (PF_Kuehlungsart) | AN |
Environment
| Ambient temperature (PF_Umgebungstemperatur) | -20 °C to 40 °C / -4 °F to 104 °F |
| Max. installation height (PF_max_Aufstellhoehe_m) | 2,000 m / 6,562 ft |
Protection and Safety
| Protection type (PF_Schutzart) | IP00 |
| Protection class (prepared) (PF_Schutzklasse) | I |
| Overvoltage category (PF_ueberspannungskategorie) | III |
| Degree of contamination (PF_Verschmutzungsgrad) | 1 |
Electrical Connections
| Input terminal (PF_Anschluss_Eingang) | Screw terminal |
| Output terminal (PF_Anschluss_Ausgang) | Screw terminal |
| Terminal PE (PF_Anschluss_PE) | Screw terminal |
Size and Weight
| Weight (PF_Gewicht_kg) | 10.7 kg / 23.589 lbs |
| Low Voltage Directive |
EN 61558-2-2 EN 61558-2-6 |
| Approval cURus - Recognized | UL 5085-1/-2; CSA 22.2 |
