• Precision Devices for the Rail Industry
    Reliable high-voltage and current measurement, high-precision energy metering, safe signal isolation
  • Memosens Academy
    Descubra mais sobre os benefícios do Memosens
  • Maximum Performance in a Minimum of Space
    MemoRail with Modbus Interface
    Multiparameter measuring device in a 17.5 mm modular housing
  • ProLine | Conversores de Sinal e Transmissores ProLine
    Produtos de primeira classe e alta precisão com separação protetora
  • BasicLine | Conversores de Sinal e Transmissores
    Produtos otimizados para aplicações convencionais
  • Process Analytics | Measurement by System
    From the sensor to the process analyzer
  • Portavo | Memosens Mobile
    Portables with Memosens technology

Infrastructure

branchen-bahn-infrastruktur-grafik-EN

 

 branchen-bahn-infrastruktur-grafik-DE-mobile

Voltage and Current Measurement DC Traction Power Supply

  • Protection of DC substations for traction power system
  • Line testing, frame leakage protection
  • Rectifiers, circuit breakers, surge arresters
  • Energy recovery, energy storage

Substations for DC power supply have rated powers as high as the upper single-digit MW range. Substations and the grid sections they supply must be effectively safeguarded against short circuits. The protection mech-anism must reliably interrupt high levels of current as they occur, limiting the power that flows into the short circuit.

The protective device must measure the current and voltage in order to execute algorithms for short-circuit detection. This requires high voltage transducers that mea-sure quickly and precisely while withstanding high loads. They must master voltages be-tween 750 and 3000 V DC, including tempo-rary surges in the case of energy recovery for braking trains, for example.

Our high voltage transducers meet the requirements for measurement and signal processing: VariTrans P 41000 for current measurement via shunt resistor and  VariTrans P 42000 for direct voltage measurement up to 3000/3600 V DC.

The use of highly insulating solids – includ-ing solid casting – ensures reliable galvanic isolation. The circuit design is dimensioned for quick, high-precision signal transmission. The transducers are extremely resistant to external fields and common-mode disturb influence.

This avoids false-positive short-circuit detec- tion (traction power supply interruptions without short circuits), which is another significant yet undesirable disruption of operations.

VariTrans P 41000 and P 42000 have prov-en their value in DC traction power supply substations worldwide. You’ll be playing it safe with the two measuring devices. A comprehensive evaluation of their years of use found that the mean time between two failures (MBTF) is 2,165 years.

Recommended products for the rail industry (infrastructure)

Entre em contato conosco
Telefone: +49 30 80191-0
Fax: +49 30 80191-200
Vendas
Utilizamos identificadores de dispositivo para personalizar conteúdos, e anúncios para fornecer recursos de mídia social e para analisar nosso tráfego. Ao utilizar este site, você concorda com a nossa utilização de cookies.