Telvis - Underground and Shaft Communication Systems and Telephones

Since 1988, Telvis has been offering high-quality, innovative communications systems and products for mining and industrial communication. Its products are implemented in almost all of the Polish coal mines, as well as in salt mines, refineries, harbours and other industrial plants in Poland and abroad – including Ukraine, Czech Republic, Belarus, Romania, France and Vietnam.

EEx I, EEx II intrinsically safe communication, emergency and dispatcher systems

Telvis specialises in developing ATEX-certified, integrated telephone, emergency and dispatcher’s communication systems and shaft communication systems.

Integrated emergency and telephone dispatcher’s systems

SAT is Telvis’ integrated emergency and telephone dispatcher’s system designed for use in places endangered by explosions of methane and fuel vapours, extensive humidity, salinity and dustiness. The system is highly scalable (up to 1,040 subscribers’ numbers in concentrated or dispersed configuration).

Intrinsically safe telephone systems

UTI is Telvis’ intrinsically safe telephone system designed for providing telephone communication in mining plants characterized by the hazard of explosion group I, categories M1 and M2 and high noise level, dustiness and other non-typical local conditions for telephone set installation.

Shaft communication systems

ITS is Telvis’ shaft communication system designed to provide local telephone connection in mine shafts with or without methane explosion hazard of any degree.

Intrinsically safe industrial telephony systems

PTI is Telvis’ intrinsically safe industrial telephony system designed for establishing a telephone connection in industrial plants characterised by the high degree of explosion hazard (IIA, IIB and IIC explosion hazard groups).

Heavy-duty communication, emergency and measurement devices

Telvis manufactures a range of heavy-duty communication, emergency and measurement devices offered in intrinsically and non-intrinsically safe versions.

Intrinsically safe telephones

Telvis’ TIG intrinsically safe telephone set is designed to work in underground mining plants in explosion hazard group I and in other places under explosion hazard group IIC.

Intrinsically safe programmable signalling devices

Telvis’ intrinsically safe programmable signalling device, PST, is a telephone set that combines features of a telephone and emergency-dispatcher signalling device. The devices are intended to work in methane fields (explosion hazard group I) and in halls endangered by explosions of gases, vapours of flammable liquids and dusts, which are under the explosion hazard group IIB and T4 temperature class.

Intrinsically safe assembling telephone sets

ITM is Telvis’ intrinsically safe assembling telephone set designed for services supervising intrinsically safe telecommunications networks. The telephones can be connected to any intrinsically safe telephone subscriber’s lines, for example, Telvis' SAT, UTI or ITS systems.

Industrial heavy-duty telephone set

Telvis’ industrial, heavy-duty telephone set, TPN, is designed for working in difficult industrial conditions, including mines and other areas outside of explosion hazard groups. Thanks to the weather-resistant casing, loud calling signal and optional optical calling signal, the telephone can be used in places with high humidity and loudness.

Intrinsically safe telecommunications meter

MIT is Telvis’ intrinsically safe telecommunications meter used for examining direct and alternating current parameters of underground telecommunications networks. It possesses all of the functions necessary for evaluating efficiency of telecommunication networks and the possibility of disturbances occurring in the lines.

Telecommunications boxes

Telvis’ range of telecommunications boxes, STP and STK, are designed to facilitate construction of the intrinsically safe and non-intrinsically safe telecommunications installations. The boxes can be used for the telecommunications networks of mines and other objects with gas and dust explosion hazards (groups I and II).

Casings

The OUT range of casings, used for installing intrinsically safe electrical equipment, is part of Telvis’ anti-explosive construction devices. The casings can also be used for other devices requiring IP65 casing protection degree. They are made of non-inflammable and antistatic plastic.

Quality control

Telvis performs overhauls and inspections of all products during the guarantee and post-guarantee period.