Redundant Power Supply Module AB 1606-XL120E-3 24-28V DC, 120 W, 3-Phase, 480V AC wide range
Input
Input voltage 3 AC 400...500V, ± 15 % 47...63 Hz, suitable for IT power systems
Rated tolerances (at 24V/5A)
• Continuous operat. 340...576V AC resp. 450...820V DC
• Short term (1 min.) 300...620V AC resp. 420...890V DC
Even if one phase fails, the unit’s operation with nominal current can be continued (limitations: EN 61000-3-2 (harmonic current emissions) is then not fulfilled, the unit has noise suppression level A instead of level B and the hold-up time is shorter). Continued operat. with two phases is also permissible; however, it reduces the unit’s reliability and lifetime.
Input current 3 x 0.5 A
Inrush current typ. <25A at 575V AC and cold-start
If you intend to protect the primary side of the power supply with fuses or circuit breakers, 10 A (x3) slow acting fuses (HBC) or a supplementary protectors 1492- SP3C100 are recommended. In order to meet local requirements, please consult local codes and regulations for proper installation.
Harmonic current emissions (PFC) acc. to EN 61000-3-2
Hold-up time >16 ms (3 phase op. at 400V AC, 24V/5 A)
>10 ms (2 phase op. at 400V AC, 24V/5 A)
Efficiency, Reliability etc.
Efficiency typ. 89% (400V AC, 24V/5 A)
Losses typ. 15 W (400V AC, 24V/5 A)
MTBF 410.000 h acc. to Siemensnorm 29500
(24V/5 A, 400V AC, TU = 40 °C)
Life cycle (electrolytics) The unit exclusively uses longlife electrolytics, specified for +105°C.
Start / Overload Behavior.
Startup delay typ. 0.1 s
Rise time ca. 5...20 ms, depending on load
Overload Behavior – no disconnection, no hiccup if overloaded
• Special Overload Design – high overload current (up to typ. 2⋅ INom), Vout is reduced with
increasing current.
(see diagram)
• 20% power boost – 6 A short-term, at 45°C or forced cooling even continuous
Advantages:
• High short-circuit current, giving large ‘start-up window’: unit starts reliably even with awkward loads (DC-DC converters, motors).
• Secondary fuses operate more reliably
Output
Output voltage 24...28V DC, adjustable by (covered) front panel potentiometer, preset:
24.5V ± 0.5% Adjusting range guaranteed
Output noise Radiated EMI values below EN50081-1, even when using long, unscreened
suppression output cables.
Ambient temperature range Operation: -10°C...+70°C (>60°C: Derating)
Tamb Storage: -25°C...+85°C
Derating typ. 6W/K (at Tamb=+60°C...+70°C)
Voltage regulation better than 2% Vout overall
Ripple / Noise < 25 mVPP, (20 MHz bandwidth, 50 Ω measurement)
Overvolt. protection typ. 33V
Parallel operation yes; current sharing available on request
Power back immunity 34V
Front panel indicator Green LED, goes out at Vout<20V
Rated continuous loading Input Tamb Iout @ 24V Iout @ 28V
with convection cooling 3-phase -10°C...+60°C 5 A 4.3 A
-10°C...+45°C 6 A* 5.1 A*
Output is protected against 2-phase -10...+60 5 A 4.3 A
short-circuit, open circuit DC in -10...+60 5A 4.3 A
and overload -10°C...+45°C 6 A* 5.1 A*
* short-term (< 1 min) or with forced air-cooling also at 60°C