Power supply type NSB2/xx is designed for use in underground mining applications. It converts an AC supply voltage into a stabilized and regulated intrinsically safe source for supplying power to approved sensors and electronic control devices. In the case of power supply failure, automatic battery backup is provided with autonomy of at least 8 hours.
Type NSB2/xx
230 V/50 Hz ± 10 %
Nominal output voltage
12 V/ia
Nominal output current
NSB2/01 (5x 150 mA + 1x 350 mA) NSB2/02 (4x 150 mA + 2x 350 mA)
Load regulation
-5 % at full load
Voltage limiting
diode safety barrier
Current limiting
resistively limited
Battery capacity
9 Ah
Working temperature range
-20°C to 50°C
Dimensions
490 x 400 x 230 mm
Explosion protection
I M2(M1) Ex d e ia q [ia] I Mb(Ma) I M1 Ex d/Ex e q [ia] I Ma
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