The KTH8 Mine-used I.S. Automatic Telephone and Anti-noise
Automatic Telephone are communication terminals with high
performance and reliability, developed with modern electronic
technology and integrated circuits. Equipped with the KTA7
Mine-used Safe Coupler, the telephone can connect with existing
surface exchangers or dispatching exchangers to establish
production dispatching and communication system for underground
mines. The anti-noise automatic telephone can be used in high-noise
underground environments, such as excavating face, transfer points.
The series of telephones also can be used in other severe
environments with high temperatures, noise and heavy pollution,
such as power plants, coal preparation plants, steel plants, ports
etc. Main
Features
The case is molded by anti-static electricity and reinforced
polyester, waterproof, dustproof, anti-corrosion, protection level
up to IP *5, suitable for very severe environments;
The telephone employs a hanging installation and new hook
structure without any removable parts;
The keypad is completely sealed and employs luminous touching
keys including keys for emergency call, hang-up and
redial;
The telephone has switch for adjusting communication gain
according to distance between telephone and exchanger, suitable for
situation of long communication distance and poor circuit
insulation in mine underground.
Technical
Parameters
Explosionproof Type: Mine-used Intrinsic Safety type, marked
as ibI
Dialing Mode: P/T compatible
Ringing Loudness: *0 dB (A-weighted, connected with the KTA7
Mine-used Safe Coupler and *0 km artificial line, tested at 1 m
from the telephone)
Maximum Communication Distance: *5 km
Environment Noise: KTH8 Mine-used Intrinsic Safety Automatic
Telephone ≤*5 dB; Anti-noise Automatic Telephone≤**0
dB
Safety Requirements of Dispatcher or Exchanger: must conform
to Non-intrinsic Safety input requirements of the KTA7 Mine-used
Safe Coupler
