The KDY660/20A mining explosion-proof and intrinsic safety DC power supply (hereinafter referred to as the power supply) is a universal explosion-proof and intrinsic safety power supply that is allowed to be used in explosive hazardous environments such as methane and coal dust. It is compact in size, light in weight, easy to install, disassemble and relocate, and equipped with a backup power source, suitable for providing power to various mining intrinsic safety equipment.

Usage environment
The power supply should be able to operate normally under the following environmental conditions:
a) Environmental temperature: 0 ℃ to+40 ℃;
b) Average relative humidity: not greater than 95% (+25);
c) Atmospheric pressure: 80kPa~106kPa;
d) In situations where there is no significant vibration or impact;
e) There is a methane explosive gas mixture underground in coal mines, but there is no corrosive gas that can damage insulation.

Main technical parameters of KDY660/20A mining explosion-proof and intrinsic safety DC power supply
1. Power supply
a) Input voltage: AC127V/AC380V/AC660V;
b) Voltage fluctuation range: 75% to+110%;
c) Rated input apparent power (W) ≤ 160.
Switching signal output: DC 0~0.5V indicates battery power supply, DC 4.5~5.5V indicates AC power supply.

Working time and conversion time of backup power supply
a) Working time: ≥ 2h (rated load);
b) Conversion time: ≤ 100ms.