Control- and isolating transformer

ST 250/5/23 - Discontinued items - no longer available

Characteristics

Benefits

 Very good switch-on behaviour thanks to reduced starting currents

 High power density due to a compact construction design

 Primary side ±5 % tappings for voltage adjustment

 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 thanks to robust metal footplate with oval slots

Product Control- and isolating transformer
Order number ST 250/5/23
Power 250 VA
Input 475 V / 500 V / 525 V
Output 230 V • 1.09 Aac
Frequency range 50 Hz to 60 Hz
Short-Circuit Losses 21 W
No-Load Losses 10 W
Short-Term Power / instantaneous output 555 VA
EN insulation class B (130°C)
UL Insulation class class 105
Duty Cycle 100 %
Wire material Copper
Efficiency 89 %
General
Short circuit proof not short-circuit proof
Switching group Ii0
Cooling type AN
Enviroment
Ambient temperature -20 °C to 40 °C / -4 °F to 104 °F
Max. installation height 2,000 m / 6,562 ft
Protection and safety
Protection type IP 00
Protection class (prepared) I
Overvoltage category III
Degree of contamination 2
Electrical Connections
Terminal Pri Screw terminal
Terminal Sec Screw terminal
Terminal PE Flat plug connection
Size and Weight
Weight 3.45 kg / 7.61 lbs
Low Voltage Directive EN 61558-2-2
EN 61558-2-4
Approval cURus - Recognized UL 5085-1/-2; CSA 22.2
VDE Approval

VDE 0570-2-x (DIN EN 61558-2-x)

This could also be of interest to you

USTE 1000/2x115
Universal control transformer
Product details
USTE 1600/2x115
Universal control transformer
Product details
USTE 2500/2x115
Universal control transformer
Product details
USTE 3200/2x115
Universal control transformer
Product details
USTE 630/2x115
Universal control transformer
Product details
USTE 800/2x115
Universal control transformer
Product details