Data sheet Input: 3 AC 400...500V Output: 24...28V / 720W 92.5% efficiency Ideal for parallel operation Simple fusing Output 3 AC 400...500 V, ± 15 % 47-63 Hz, Suitable for IT power systems Rated Tolerances • Continuous operation • Short term (1 min) at 24 V/30 A Input current Inrush current Inrush current limiting done with a fixed 47R resistor (not a thermistor) which is bridged after the unit is running, so losses are minimised. That means no reset time even at a warm-start. Fuse loading Output voltage 24...28 V DC, adjustable by (covered) front panel potentiometer. Adj. range guaranteed Output noise suppression EN 61000-6-3 (class B) is fulfilled even when using long, unscreened output cabels Ambient temperature range Tamb Operation: 0°C...+70°C (>60°C: Derating) Storage: -25°C...+85°C Rated continuous loading with convection cooling at Tamb=0°C - 60°C 24 V / 30 A (720 W) resp. 28 V / 26 A (728 W) Harmonic current emissions (PFC) Transient handling Active transient filter incorporated, so transient resistance acc.to VDE 0160 / W2 (1560 V / 1.3 ms), for all load conditions. > 10 ms at 400 V AC, 24 V / 30 A Voltage regulation better than 2% over all Ripple • Output charact. S • Output charact. P (incl. spikes (20 MHz bandw.), 50 Ω measurem.) < 20 mVPP (< 0.1 %) < 40 mVPP (In: 230VAC, Out: 24V/30A) < 100 mVPP (In: 184VAC, Out: 24V/30A) Over-voltage protection At 32 V ± 10%: switch to hiccup mode Front panel indicators: • Green LED on, when Vout > UT, where UT is ca. 2 V below Vout adjusted (24V...28V) • Red LED on, when 10 V < Vout< UT • Red LED flashes, when 0 V < Vout < 10 V Parallel operation 425,000 h @ 400 VAC, 360,000 h @ 480 VAC (Siemensnorm SN 29500 (Release 07.97), 24 V/30 A, Tamb = +40 °C) Life cycle (electrolytics) The unit exclusively uses longlife electrolytics, specified for +105°C (cf. ’The SilverLine’, p.2). High reliability and lifetime, as • only four aluminium electrolytics and • no small aluminium electrolytics are used. Construction / Mechanics * To achieve current sharing the output V/I characteristic can be altered to be 'softer' (25V at 0.4A, 24V at 30A). This is done by repositioning a bridge connection (without opening the unit). Power Back Immunity To be fused with a 3 x 10A, B-type 'circuit-breaker' switch based on the usual thermomagnetic overload sensing principle (used anyway to fuse the input lines; unit has no internal fuses). Input Input voltage Housing dimensions and Weight 240 mm x 124 mm x 112 mm (+ DIN rail) • WxHxD above/below 70 mm recommended • Free space for left/right 25 mm recommended ventilation 2.0 kg • Weight Design advantages: • All connection blocks are easy to reach as mounted at the front panel. • PVC insulated cable can be used for all connections, as the connection blocks are mounted in the cooler area on the underside of the unit. * For further information see data sheets „The SilverLine“, „SilverLine Family Branches“ and mechanics data sheet Order information Order number Screw mounting set, two needed per unit

Data sheet Start / Overload Behaviour Rise time Duration of switch-on attempts at ca. 1.4 s • Initial application on mains • Subsequent ca. 0.5 s attempts Hiccup operation at Duration between switch-on attempts Vout range 24,00 Output Voltage Uout / V Startup delay Electronic current limiting, protects against overload and short circuit: • Vout < ca. 10 V: Periodical switch-on attempts (hiccup-mode). • Vout > ca. 10 V: The output current is continuous. The V/I characteristic of the supply is straight. Vout < ca. 10V: Hiccup mode Output Current Iout [A] Advantages of the switch-on/overload behaviour:...