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Isolated relays for voltage presence detection

ESTRA-VP

Our ESTRA-VP relay detects DC voltages in power distribution systems for public transportation networks, and ensures the electrical safety of people and property.

Documentations
Brochures
Isolated relays for voltage presence detection – VP20
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Product environment

Sécheron possesses years of experience designing electrical safety products and solutions for railway DC traction power substations. Our know-how covers isolated amplifiers for voltage detection.

Our ESTRA-VM ESTRA-VP relay detects DC voltages in power distribution systems for public transportation networks. With its high-voltage isolation and rated voltages from 750 V DC to 3,000 V DC, the VP20 ensures the electrical safety of people and property.

Technical Data
  • Rated voltage up to 3’600 Volts.
  • Test voltages up to 10 kV AC.
  • Application: voltage measurement up to 3’600V directly connected to high voltage circuit.
  • Detection of voltages: scale up to 1’500 Vdc or 3’000 Vdc.
  • Accuracy: ±5% of input scale.
  • Adjustable thresholds by means of internal dip switches.
  • Power supply voltage splitted in 3 ranges covering 24 to 230 VDC.
  • Reference standards: EN 50121-5 when mounted in a cubicle.
  • Reference standards: EN 50124-1, EN 61000-6-2 and EN 61000-6-4.
Documentation
Isolated relays for voltage presence detection – VP20
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DE
ES
FR
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Applications DC traction power supply

Main Benefits

High galvanic isolation up to 10 kV
High immunity; no fuse required
Intrinsically safe operation
Wide supply voltage range
Diagnostic signal
Designed specifically for DC railway applications

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