【Working Principle】

The circuit schematic diagram of the KDW660/12B Mining Epoxy-Sealed and Intrinsically Safe DC Regulated Power Supply is as shown. The AC input voltage is stepped down by the power module, rectified by a rectifier bridge, filtered by electrolytic capacitors, and then regulated to obtain a stable power output. With measures such as two-stage overvoltage protection, two-stage overcurrent protection, and short-circuit protection, the output meets the requirements of intrinsic safety performance.

PERFORMANCE CHARACTERISTICS

1.Safe and Reliable

Complete explosion-proof qualifications, epoxy-sealed and intrinsically safe power supply, dual explosion-proof technology, suitable for use in environments with the risk of gas and coal dust explosions.

2.Stable Voltage Output

The AC power is stepped down by a transformer, then rectified, filtered, and regulated to output a stable DC voltage.

3.High Adaptability

Designed and manufactured with epoxy sealing, suitable for use in various harsh environments such as high and low temperatures, high and low pressures, and explosive atmospheres.

4.Comprehensive Protection Functions

Features two-stage overvoltage, two-stage overcurrent, and short-circuit protection functions, with automatic recovery after fault clearance.

【Product Parameters】

A. Explosion proof type and marking

a) Explosion proof type: Mining sealing and intrinsic safety type

b) Explosion proof mark: Ex mb [ib Mb] I Mb

B. Basic parameters

a) Power supply voltage input: AC127V/AC660V;

b) Rated input current: ≤ 0.3A;

c) Power supply voltage fluctuation range: 75% to 110% of the nominal value;

d) Expected short-circuit current: 5A.

C. Basic performance

a) Number of output channels: 1;

b) Nominal output voltage (V): 12;

c) Rated output current (A): 1.9;

d) Open circuit voltage (V): ≤ 12.4;

e) Short circuit current (A): ≤ 0.5;

f) Overcurrent protection value (A): ≤ 1.98;

g) Load effect: ≤ 5%;

h) Deviation value of output voltage: ≤ 5%;

i) Source effect: ≤ 5%.

【Product Qualifications】