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J5JY-YXJ127 (B) mine explosion-proof and intrinsically safe speaker (light receiving sub-speaker) is a special audio product for coal mine, metallurgy and mining industry, suitable for underground sidewalks, parking lots, lounges and other places. The audio signal of J5JY-YXJ127 (B) (main optical receiver) is transmitted to the equipment, providing music and safety knowledge education for underground workers. Thereby raising the awareness of coal mine safety production and enriching the cultural life of employees.
This product is carefully designed with imported high-power stereo high-fidelity audio power amplifier chip, which has the advantages of beautiful sound quality, long service life, safety and reliability, etc. It is an ideal product for popularizing safety education under the mine and enriching the cultural life of employees.
Second, the use of environmental conditions
a) Ambient temperature: 0 ℃ ～ + 40 ℃;
b) Average relative humidity: not more than 95% (+ 25 ° C);
c) Atmospheric pressure: 80kPa ～ 106kPa;
d) Where there is no significant vibration and shock;
e) Where there is an explosive mixture of methane and coal dust under the coal mine, but there is no corrosive gas that damages the insulation.
3. Explosion-proof type and sign
1. Explosion-proof type: mine explosion-proof and intrinsically safe type
2. Explosion-proof mark: Exd [ib] I
4. Executive Standard
Q / JFY-001-2010 J5JY-YXJ127 mine explosion-proof and intrinsically safe speaker
V. Basic parameters:
a) Rated working voltage: AC127V
b) Power fluctuation rate: 75% ～ 110%
c) Rated working current: 590mA
d) Rated power: 20W
e) Frequency response: 60Hz ～ 18kHz;
f) Signal to noise ratio: 85dB
g) Sound level intensity: input 1 kHz signal, the sound level intensity is not less than 85dB (A) in the range of 50 meters
h) Overall dimensions: 296 × 282 × 272 (mm) (length × width × height)
i) Weight: about 15kg
6. Installation and use:
1. The product is easy to install and can be used to hang underground walkways, parking lots, lounges and other places.
2. Multiple speakers are connected in parallel
3. Adjust the volume, treble and bass, balance of the power amplifier under the conditions allowed by the ground or the installation site.
A, B-input power AC 127V.
C-spare
D-spare
E-audio input +
F-audio input-
Mine flameproof and intrinsically safe speakers (auxiliary speakers, cable connection, power supply inside) Model: J5JY-YXJ127 (B)