22 February 2017
Power Electronics / Power Management
Traco Power’s new TIB series of of DIN-rail power supplies for industrial environments and electric control cabinets is designed for reliability in a general range of applications. Efficiency of up to 94,5% allows for a very slim package, and the case offers the potentially useful feature to fix the DIN-rail clip to the side wall for mounting inside flat panels. The DC-OK LED indicator is visible from both sides.
The high efficiency results in low heat dissipation, which enables reliable full-load operation in an environmental temperature range of -25°C to +60°C without forced air cooling. The units are even certified for up to 70°C with 20% output power de-rating. Over a period of minimum 4 seconds they can operate with a boost power of 150%. If boost time is exceeded the units will switch off and automatically restart after about 10 seconds. The boost power facilitates the activation of stepper motors, solenoids or actuators. For such applications, the units also provide a true power back immunity and output over-voltage protection. There is no output voltage undershoot when back power stops. Also, dynamic load changes have only minimal impact on the output voltage (~100 mV at 20-90% load step change).
EMC immunity is compliant for applications in industrial environments (EN 61000-6-2) while emission complies with the standard for residential and commercial environments (EN 61000-6-3). Furthermore, the outputs are radio-interference-suppressed which impedes radiation at long output lines (antennas). This filter reduces the common mode current to the limits for telecommunication ports. The units operate with a high power factor of up to 99% by active power factor correction, which also keeps the input inrush current low.
The TIB series models are available with a nominal power of 80, 120, 240 or 480 W (+50% boost power). The output voltage is adjustable from 23,5 V to 28 V d.c.
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