STEP-PS/ 1AC/24DC/0.75 - Power supply unit

2868635

Primary-switched STEP POWER power supply for DIN rail mounting, input: 1-phase, output: 24 V DC/0.75 A

STEP POWER power supplies for distribution boards
The STEP POWER power supply range was developed especially for building automation. The low idling losses and high degree of efficiency ensure maximum energy efficiency. They allow flexible use and can be snapped onto the DIN rail or screwed onto an even surface.

AC operation
Nominal input voltage range 100 V AC ... 240 V AC
Input voltage range 85 V AC ... 264 V AC
95 V DC ... 250 V DC
Input voltage range AC 85 V AC ... 264 V AC
Input voltage range DC 95 V DC ... 250 V DC
Voltage type of supply voltage AC/DC
Inrush current < 15 A (typical)
Inrush current integral (I2t) < 0.1 A2s
AC frequency range 45 Hz ... 65 Hz
Frequency range DC 0 Hz
Mains buffering time typ. 15 ms (120 V AC)
typ. 70 ms (230 V AC)
Current consumption 0.3 A (120 V AC)
0.2 A (230 V AC)
Nominal power consumption 36.9 VA
Protective circuit Transient surge protection; Varistor
Power factor (cos phi) 0.58
Typical response time < 0.5 s
Input fuse 1.25 A (slow-blow, internal)
Recommended breaker for input protection 6 A ... 16 A (Characteristics B, C, D, K)

Efficiency > 84 % (for 230 V AC and nominal values)
Output characteristic U/I
Nominal output voltage 24 V DC
Output current Imax 1.4 A
Nominal output current (IN) 0.75 A (-25 °C ... 55 °C)
0.83 A (-25 °C ... 40 °C permanent)
Derating 55 °C ... 70 °C (2.5 %/K)
Feedback voltage resistance ≤ 35 V DC
Protection against overvoltage at the output (OVP) < 35 V DC
Control deviation < 1 % (change in load, static 10 % ... 90 %)
< 2 % (change in load, dynamic 10 % ... 90 %)
< 0.1 % (change in input voltage ±10 %)
Residual ripple < 75 mVPP (20 MHz)
Output power 18 W
Peak switching voltages nominal load < 15 mVPP (20 MHz)
Maximum no-load power dissipation 0.5 W
Power loss nominal load max. 3.6 W
Rise time < 0.5 s (UOUT (10 % ... 90 %))
Connection in parallel yes, for redundancy and increased capacity
Connection in series yes

Input
Connection method Screw connection
Conductor cross section, rigid min. 0.2 mm²
Conductor cross section, rigid max. 2.5 mm²
Conductor cross section flexible min. 0.2 mm²
Conductor cross section flexible max. 2.5 mm²
Conductor cross section AWG min. 24
Conductor cross section AWG max. 12
Stripping length 6.5 mm
Screw thread M3
Tightening torque, min 0.5 Nm
Tightening torque max 0.6 Nm
Output
Connection method Screw connection
Conductor cross section, rigid min. 0.2 mm²
Conductor cross section, rigid max. 2.5 mm²
Conductor cross section flexible min. 0.2 mm²
Conductor cross section flexible max. 2.5 mm²
Conductor cross section AWG min. 24
Conductor cross section AWG max. 12
Stripping length 6.5 mm
Screw thread M3
Tightening torque, min 0.5 Nm
Tightening torque max 0.6 Nm