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
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.
Product description
- Rated voltage up to 3'600 Volts.
- Test voltages up to 10 kV AC (15 kV 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).
- Special version for return circuit 150 Vdc (fixed setting).
- Output settable signals: ±5 V, ±20 mA or 4 ... 20 mA.
- 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).
Useful links
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