Mining uninterrupted power source

The utility model discloses a mining uninterrupted power source, include: air switch, surge protector, the low power transformer of 380V~220V, the small -size switching power supply who has the UPS function, backup battery, alternating current electrical supply state / battery low -voltage state indicator and direct current / interchange dc -to -ac converter, wherein: low power transformer of air switch, surge protector, 380V~220V and the small -size switching power supply who has a UPS function connect gradually, the small -size switching power supply who has the UPS function still connects backup battery, alternating current electrical supply state / battery low -voltage state indicator and direct current / interchange dc -to -ac converter respectively. This mining uninterrupted power source especially is fit for the uninterrupted power source that low -power precision electronic equipment such as downhole safety monitoring system used, has functions such as short -circuit protection, surge protection, the