KTA138 coupler capacity: 32-10000 channels, standard rack mounted, single unit with 32 channels (multiple units in multiples of 32 channels)
Safety certificate: 160023, Explosion proof certificate: CCCMT16.0107
1、 Characteristics of KTA138 intrinsically safe telephone coupler for mining use
This device was launched in 2016 and was previously a KTA16A telephone coupler. To meet the needs of coal and non coal mining users, a single standard rack mounted 1U, 32 doors, can be combined and stacked arbitrarily. Used to form couplers for hundreds or thousands of line users. The shell is made of iron shell material, and the chassis has a novel and beautiful appearance, full of modern sense. The structure is reasonable, firm, small in size, light in weight, easy to use, and has good communication performance.
2、 Environmental conditions for the use of telephone couplers (safety barriers)
Environmental temperature: 0 ℃ to+40 ℃
Relative humidity: ≤ 93 ± 3% (at 25 ℃)
Atmospheric pressure: 86-106KPa
Placed in a safe place without vibration or corrosive gases, it is strictly prohibited to install it underground in coal mines
3、 Main technical parameters of KTA138 telephone coupler
Non local input parameters:
High input DC voltage: ≤ DC 60V
Large input DC current: ≤ DC 60 mA
High input bell current voltage: ≤ AC 90V
Large input bell current working current: ≤ AC 90 mA
Input parameters for this security end:
Underground signal high input DC open circuit voltage: ≤ DC 60V
Underground signal large input DC short-circuit current: ≤ DC 34 mA
Underground signal high input bell current open circuit voltage: ≤ AC 57V
Underground signal large input bell current short-circuit current: ≤ AC 38 mA
Chongqing Europe specific communication transmission distance: 5-12KM, with a large loop resistance supporting 2K Ω.
