STEP-PS/1AC/24DC/1.75 - Auser
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Asiantuntevaa teollisuuden automaatiopalvelua vuodesta 1993

STEP-PS/1AC/24DC/1.75

Step-teholähde

Step-teholähdeperhe on matala, syvyyssuunnassa vain 62 mm. Erityisen hyvin Step soveltuu käytettäväksi rakennusautomaatiossa, koska se on mitoitettu mahtumaan DIN-aukkoon.

  • Lähtöjännite 24  V DC
  • Nimellisvirta 1,75 A
  • 1-vaiheinen
  • Erittäin pieni tyhjäkäyntiteho (<0,7 W)
  • Säädettävä toisiojännite
  • Kiinnitys DIN-kiskoon tai paneeliin
  • Laaja tulojännite (85…264 V AC ja 95…250 V DC)
  • Leveys 54 mm

General data

Insulation voltage input/output 4 kV AC (type test)
2 kV AC (routine test)
Insulation voltage input / PE 3.5 kV AC (type test)
2 kV AC (routine test)
Insulation voltage output / PE 500 V DC (routine test)
Degree of protection IP20
Class of protection II
MTBF > 500 000 h in acc. with IEC 61709 (SN 29500)
Housing material polycarbonate
Foot latch material Plastic POM
Dimensions W / H / D (state of delivery) 54 mm / 90 mm / 61 mm
Weight 0.2 kg

Input data

Input nominal voltage range 100 V AC … 240 V AC
AC input voltage range 85 V AC … 264 V AC
DC input voltage range 95 V DC … 250 V DC
AC frequency range 45 Hz … 65 Hz
DC frequency range 0 Hz
Current consumption Approx. 0.6 A (120 V AC)
Approx. 0.3 A (230 V AC)
Inrush current limitation < 15 A (typical)
I2t < 0.6 A2s
Power failure bypass > 25 ms (120 V AC)
> 150 ms (230 V AC)
Typical response time < 0.5 s
Protective circuitry Transient surge protection Varistor
Input fuse, integrated 3.15 A (slow-blow, internal)
Recommended backup fuse for mains protection 6 A
10 A
16 A (characteristic B)

Output data

Nominal output voltage 24 V DC ±1%
Setting range of the output voltage 22.5 V DC … 29.5 V DC (> 24 V constant capacity)
Output current 1.75 A (-25°C … 70°C)
1.9 A (-25 °C … 40 °C permanent)
3.75 A (maximum output current)
Derating Above +55°C: 2.5% per Kelvin
Control deviation < 1 % (change in load, static 10% … 90%)
< 2 % (change in load, dynamic 10% … 90%)
< 0.1 % (change in input voltage ±10%)
Power loss nominal load max. 5 W
Maximum power dissipation idling 0.7 W
Efficiency > 89 % (for 230 V AC and nominal values)
Ascent time < 0.5 s (UOUT (10% … 90%))
Residual ripple < 35 mVPP (with nominal values)
Peak switching voltages < 35 mVPP (with nominal values)
Connection in parallel Yes, for redundancy and increased capacity
Connection in series Yes
Surge protection against internal surge voltages Yes, limited to approx. 35 V DC
Resistance to reverse feed max. 35 V DC

LED status indicator

Status display ”DC OK” LED green / UOUT > 21.5 V: LED lights up

STEP-PS/ 1AC/24DC/1.75