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Isolated amplifiers for voltage measurement

ESTRA-VM

Our ESTRA-VM amplifier measures high DC voltages in power distribution systems for public transportation networks. With its high-voltage isolation the VM ensures the electrical safety of people and property.

Documentations
Brochures
Isolated amplifiers for voltage measurement – VM10
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FR
Isolated amplifiers for voltage measurement – VM12
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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 measurement.

Our ESTRA-VM amplifier measures high DC voltages in power distribution systems for public transportation networks. With its high-voltage isolation the VM ensures the electrical safety of people and property.

Technical Data
  • Rated voltage up to 3’600 Volts.
  • Test voltages up to 10 kV AC (15kV for the fixed setting version).
  • Application: voltage measurement up to 3’600V directly connected to high voltage circuit.
  • Measurement of bipolar voltages: input settable from 750 to 2’000 Vdc or 3’000 Vdc (fixed setting).
  • Output settable signals: ±5 V, ±20 mA or 4 … 20 mA.
  • Special version for return circuit 150 Vdc (fixed setting).
  • Power supply voltage from 24 to 230 VDC/VAC.
  • Protection against electric shocks through protective separation between input, output and power supply.
  • Protective separation up to 1800 V AC/DC according to EN 61140.
  • Designed to withstand permanent voltages up to 3600 V AC/DC and fast transients up to 20 kV
  • Reference standards: EN 50121-5 when mounted in a cubicle.
  • Reference standards: EN 61326 class B (standard for isolators).
Documentation
Isolated amplifiers for voltage measurement – VM10
EN
DE
ES
FR
Isolated amplifiers for voltage measurement – VM12
EN
DE
ES
FR
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Applications DC traction power supply

Main Benefits

High galvanic isolation up to 15 kV
Very high immunity; no fuse required
Excellent transmission properties
Wide supply voltage range
Compact
Designed to work with SEPCOS
Designed specifically for DC railway applications
Highly reliable

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