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The KDH220/45 mining telephone can be used with the KTH122 mining phone, this serial of product is reliable and can be connected with 2-5 KTH122 telephones to form a independent communication net, it can be used in the underground environment which is likely to expose and with methane and other dangerous gas. It is the best choice of the small and mid wind.
Features
The KDH220/45 mining electrical source is made of explosion proof shell and the electrical circuit.
Working principle: the electricity comes from the transformer to commute bridge, wave-filter capacitance and so on to form exchanging circuit from AC to DC as a voltage-stability circuit including fuse-breaking device, current-limited resistance.
Main technical parameters
|
Input data |
Voltage（V） |
AC220 |
|
AC127 |
||
|
Power（W） |
≤250 |
|
|
Input data (Intrinsic safety) |
Voltage（V） |
DC 45V |
|
Current |
60mA |
|
|
Max. telephone For each electrical source (pcs) |
≤5 |
|
|
Max. calling phone at same time(pcs) |
≤3 |
|
|
Distance of communication （km） |
3 |
|
|
Size |
240×270×105 |
|
|
Weight（kg） |
15 |
|
|
Coble O.D. |
8-13 |
|