KTH8 mine intrinsically safe explosion-proof telephone is a high-performance and highly reliable communication terminal successfully developed by adopting modern electronic technology and fully integrated circuit.

It can be matched with KT8013B or KTA7 type mine safety coupler, and can be connected with various existing ground switches or dispatching switchboards to form underground production and dispatching communication system in coal mines.

Standard:GB 3836.1-2010 GB 3836.4-2010Q/320400 MZ002-2022MT/T 289-1992

Main Features

1. The case is molded by anti-static electricity and reinforced polyester, waterproof, dustproof, anti-corrosion, protection level up to IP 65, suitable for very severe environments;
2. The telephone employs a hanging installation and new hook structure without any removable parts;
3. The keypad is completely sealed and employs luminous touching keys including keys for an emergency call, hang-up, and redial;
4. The telephone has a switch for adjusting communication gain according to the distance between telephone and exchanger, suitable for the situation of long communication distance and poor circuit insulation in mine underground.

Technical Parameters

• Explosion-proof Type: Mine-used Intrinsic Safety type, marked as ibI
• Dialing Mode: P/T compatible
• Ringing Loudness: 90 dB (A-weighted, connected with the KTA7 Mine-used Safe Coupler and 10 km artificial line, tested at 1 m from the telephone)
• Maximum Communication Distance: 15 km
• Environment Noise: KTH8 Mine-used Intrinsic Safety Automatic Telephone ≤75 dB; Anti-noise Automatic Telephone≤110 dB
• Safety Requirements of Dispatcher or Exchanger: must conform to Non-intrinsic Safety input requirements of the KTA7 Mine-used Safe Coupler

Applications

• KTH8 Telephone can be used in high noise environment in underground coal mines, such as mining workings and transfer points.
• KTH8 Telephne can also be used in other harsh working environments with high temperature, high noise, high temperature and heavy pollution, such as power plants, coal processing mines, coal washing plants, underground mines, tunnels, metal mines, chemical plants, plant offices, dispatching rooms and other dangerous places containing gas (methane) explosive gas mixtures, steel plants. Port, etc.

Spare parts List

• KTH8-SB handle
• KTH8-HJMK Mainboard
• KTH8-JP Telephone Keyboard
• KTH8-CH Telephone Contact Card
• FS-X509 Telephone Speakers