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LH thyristor connectors

Switching on single-phase and three-phase power capacitors

To meet the needs of the market and the issues appearing in an increasing number of reactive power compensation systems, we have designed an LH thyristor connector.

The connector is dedicated to switching on power capacitors, which due to its operation gain significantly extended service life. The capacitors are switched on with zero potential difference between the network and the capacitor. As a result, in-rush current is equal to the rated current. It reduces the current surge phenomenon and secures against a voltage drop in the network caused by high in-rush current of charging the capacitors.

Contrary to the conventional contactors, where chattering and thus system failure or even fire may occur, the LH thyristor connectors are resistant to partial input voltage dips.

Thyristor connectors ensure dynamic compensation and stable operation of the system, thus significantly increase its service life. They are adapted to work with the most controllers available on the market.

LH 1/20 thyristor connectors

  • Application
  • Functionalities
  • Technical informations
  • Gallery

  • Application

    • inductive reactive power compensation – fast capacitor banks with and without protective chokes
    • inductive reactive power compensation – fast hybrid banks
    • connecting single-phase capacitors in stars
    LH 1/20 thyristor connectors

  • Functionalities

    • connecting process at zero potential
    • external signalling of operating states
    • extended service life of capacitors
    • stable operation with partial voltage dips
    • reduced own losses with a bypass
    • option to control via RS 485
    • simple installation and commissioning without programming
    • working with most available reactive power controllers
    LH 1/20 thyristor connectors

  • Technical informations

    Power supply voltage
    24 VDC+10%
    Power consumption
    max to 3 VА
    Ambient temperature
    -25<br>60
    Relative humidity
    50% for -40°C<br>90% for 60°C
    Level of security
    IP20
    Weight
    0,3
    Dimensions
    110 x 170 x 87mm
    Mounted
    TH35
    Communication
    RS485 Modbus/RTU
    Control voltage
    24 VDC +10%
    Frequency
    50 Hz

    Additional technical informations

    Alarm
    relay output 250 V/5 A NO/NC
    Switch-on time
    to 20 ms
    Interval between cycles
    to 20 ms
    Switch-off time
    min 100 ms
    Power of the capacitor
    4,5 kvar/270 µF/230 V
    LH 1/20 thyristor connectors

  • Gallery

LH 1/75 thyristor connectors

  • Application
  • Functionalities
  • Technical informations
  • Gallery

  • Application

    •    inductive reactive power compensation – fast capacitor banks with and without protective chokes
    •    inductive reactive power compensation – fast hybrid banks
    •    connecting single-phase capacitors in stars

    LH 1/75 thyristor connectors

  • Functionalities

    •    connecting process at zero potential
    •    external signalling of operating states
    •    extended service life of capacitors
    •    stable operation with partial voltage dips
    •    reduced own losses with a bypass
    •    option to control via RS 485
    •    simple installation and commissioning without programming
    •    working with most available reactive power controllers

    LH 1/75 thyristor connectors

  • Technical informations

    Power supply voltage
    24 VDC+10%
    Power consumption
    maximum to 3 VA
    Ambient temperature
    -25<br>60
    Relative humidity
    50% for +40°C<br>90% for 60°C
    Level of security
    IP20
    Weight
    1
    Mounted
    TH35
    LH 1/75 thyristor connectors

  • Gallery

LH thyristor connector 3/20

  • Application
  • Functionalities
  • Gallery

  • Application

    • inductive reactive power compensation – fast capacitor banks with and without protective chokes
    • inductive reactive power compensation – fast hybrid banks
    • connecting three phase capacitors in triangle
    LH thyristor connector 3/20

  • Functionalities

    • connecting process at zero potential
    • external signalling of operating states
    • extended service life of capacitors
    • stable operation with partial voltage dips
    • reduced own losses with a bypass
    • option to control via RS 485
    • simple installation and commissioning without programming
    • working with most available reactive power controllers
    LH thyristor connector 3/20

  • Gallery

LH 3/75 thyristor connectors

  • Application
  • Functionalities
  • Technical informations
  • Gallery

  • Application

    • inductive reactive power compensation – fast capacitor banks with and without protective chokes
    • inductive reactive power compensation – fast hybrid banks
    • connecting three phase capacitors in triangle
    LH 3/75 thyristor connectors

  • Functionalities

    • connecting process at zero potential
    • external signalling of operating states
    • extended service life of capacitors
    • stable operation with partial voltage dips
    • reduced own losses with a bypass
    • option to control via RS 485
    • simple installation and commissioning without programming
    • working with most available reactive power controllers
    LH 3/75 thyristor connectors

  • Technical informations

    Power supply voltage
    24 VDC+10%
    Power consumption
    max to 3 W
    Ambient temperature
    -25°C 60°C
    Relative humidity
    50% for +40°C, 90% for 60°C
    Level of security
    IP20
    Weight
    1 kg
    Dimensions
    115 x 177 x 87 mm
    Mounted
    TH35
    Communication
    RS485 Modbus/RTU
    Control voltage
    24 VDC +10%
    Frequency
    50 Hz

    Additional technical informations

    Alarm
    relay output 250 V/5 A NO/NC
    Switch-on time
    to 50 ms
    Interval between cycles
    min 100 ms
    Switch-off time
    to 20 ms
    Power of the capacitor
    50 kvar/3x332 µF/400 V
    LH 3/75 thyristor connectors

  • Gallery


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