Combined sensor

CVSO 25

Combined sensor CVSO 25 is used for outdoor environment to read the voltage and current on one phase. Creeping surface way corresponds to insulating 25 kV for the highest pollution (31 mm/1kV).

Voltage part of sensor CVSO 25 is used to read voltage in systems up to 22 kV. It can be used for signalling of the voltage presence in the HV circuit. With insulation it complies with the standard ČSN 61869-3.

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Description

Combined sensor CVSO 25 is used for outdoor environment to read the voltage and current on one phase. Creeping surface way corresponds to insulating 25 kV for the highest pollution (31 mm/1kV).

Voltage part of sensor CVSO 25 is used to read voltage in systems up to 22 kV. It can be used for signalling of the voltage presence in the HV circuit. With insulation it complies with the standard ČSN 61869-3.

Current part of sensor CVSO 25 is used to measure roughly the current or for signalling. It is designed for systems up to 22 kV. By its mechanical qualities it meets the requirements of standard ČSN EN 60660 for supporting insulator JO2-145, i.e. max. violating force 2000 N.With the insulation and accuracy it meets the standard ČSN 61869-2.

Assembly position of sensors is vertical. They are tightened with the help of screw M16 into the nut in the lower part of sensor CVSO 25. Sensor CVSO 25 has two independent cables which are lead out, one for current part, the second one for voltage part.

ATTENTION!! In case the low-voltage output of condensator is not used electrically, it has to be earthed from security reasons.

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Parameters

  • Highest voltage for equipment: 24/25 kV
  • Power frequency test voltage: 50 kV
  • Lightning impulse test voltage: 125 kV
  • Nominal primary current: 100–400 A
  • Nominal secondary current: 5 A nebo 1 A
  • Rated short-time thermal current, Ith: 16 kA
  • Rated dynamic current, ldyn: 40 kA
  • Nominal primary voltage: 22/√3 kV
  • Nominal secondary current: 165 V ±15 % (platí pro kabel 12 m)
  • The sensing capacity C1: 80 až 90 pF
  • Capacity of shielded terminal at the meter of length C2: 202 pF/m
  • Accuracy class – measurement: 2 %
  • Overcurrent factor – measurement: >5
  • Max power: 2 VA
  • Nominal frequency: 50 Hz
  • Weight: 9 kg
  • Thermal insulation class: E
  • Operation conditions: corresponds to temperature class -40/40 according to IEC 61869-1
  • Standard: ČSN EN 61869-1, ČSN EN 61869-2, ČSN EN 61869-3, IEC 61869-1, IEC 61869-2, IEC 61869-3

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Sensors and transducers