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The WITT TVM system monitors the traction voltage in both directions of travel using a single, factory-preconfigured unit – ideal for installation in underground railway tunnels. Up to two TVM components – analogue voltage monitors or voltage signalling relays – are housed in a highly compact V2A stainless steel enclosure, which can withstand even severe external impacts such as rockfall or vandalism. Highly insulating separation zones within the enclosure prevent voltage cross-contamination between the different voltage ranges, as well as between the operating and signalling voltages. The system is supplied ready for operation and fully configured – there is no need for on-site commissioning or parameterisation.
The WITT TVM system monitors the traction voltage in both directions of travel using a single, factory-preconfigured unit – ideal for installation in underground railway tunnels. Up to two TVM components – analogue voltage monitors or voltage signalling relays – are housed in a highly compact V2A stainless steel enclosure, which can withstand even severe external impacts such as rockfall or vandalism. Highly insulating separation zones within the enclosure prevent voltage cross-contamination between the different voltage ranges, as well as between the operating and signalling voltages. The system is supplied ready for operation and fully configured – there is no need for on-site commissioning or parameterisation.
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The fully analog CM200 is used to detect changes between two potentials. A typical application is monitoring shields for insulation faults or interruptions.
The operating status is indicated by LEDs or potential-free signal contacts. The CM 200 operates without auxiliary power.
The fully analog CM200 is used to detect changes between two potentials. A typical application is monitoring shields for insulation faults or interruptions.
The operating status is indicated by LEDs or potential-free signal contacts. The CM 200 operates without auxiliary power.
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Voltage monitoring between the track earth and the water earth serves to prevent corrosion, ensure safety, detect faults and comply with regulations.
Voltage monitoring between the track earth and the water earth serves to prevent corrosion, ensure safety, detect faults and comply with regulations.
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Dieses WITT EPM 80 überwacht die Erdungspotentiale der angeschlossenen Erden bzw. Bahnerden und bewertet die auftretenden Spannungen (siehe technische Daten).
Dieses WITT EPM 80 überwacht die Erdungspotentiale der angeschlossenen Erden bzw. Bahnerden und bewertet die auftretenden Spannungen (siehe technische Daten).
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The WITT-TVM traction voltage relay provides analogue monitoring of the traction voltage in traction power supply systems up to 1,500 V DC and reliably indicates whether a system is de-energised before parts are connected or work is carried out in live areas – for example, during maintenance work or in an emergency. It operates without an external auxiliary voltage, drawing its power from the measured voltage itself, and is supplied with up to eleven threshold parameters configured to the customer’s specifications at the factory – this is not a standard off-the-shelf product. Two separate, potential-free changeover contacts indicate when the voltage is above or below the set threshold separately; the compact DIN rail housing (IP20) can be integrated into any control cabinet.
The WITT-TVM traction voltage relay provides analogue monitoring of the traction voltage in traction power supply systems up to 1,500 V DC and reliably indicates whether a system is de-energised before parts are connected or work is carried out in live areas – for example, during maintenance work or in an emergency. It operates without an external auxiliary voltage, drawing its power from the measured voltage itself, and is supplied with up to eleven threshold parameters configured to the customer’s specifications at the factory – this is not a standard off-the-shelf product. Two separate, potential-free changeover contacts indicate when the voltage is above or below the set threshold separately; the compact DIN rail housing (IP20) can be integrated into any control cabinet.
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The CM 400 is a self-resetting cable monitoring device for railway applications. It detects faults in DC cables, particularly within the catenary and power supply infrastructure of electrified railway lines, thereby contributing to the operational safety and availability of the cable systems.
The CM 400 is a self-resetting cable monitoring device for railway applications. It detects faults in DC cables, particularly within the catenary and power supply infrastructure of electrified railway lines, thereby contributing to the operational safety and availability of the cable systems.
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Transducer TD1A01 0 – 60 mV to 4 – 20 mA
Transducer TD1A01 0 – 60 mV to 4 – 20 mA
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Measuring transducer TD2B01 0 – 3 kV to 4 – 20 mA
Measuring transducer TD2B01 0 – 3 kV to 4 – 20 mA
