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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.

Łącznik tyrystorowy LH 1/20

 

  • 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

 

  • 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
Parameter  Value
power supply voltage 24 VDC+10%
power consumption max up to 3 VA
ambient temperature -25°C 60°C
relative humidity 50% dla +40°C, 90% dla 60°C
casing protection class IP20
control voltage 24 VDC +10%
prąd znamionowy 20 A
napięcie znamionowe 150-400 VAC
częstotliwość 50 Hz
alarm relay output 250 V/5 A NO/NC
switch-on time up to 20 ms
interval between the subsequent cycles up to 20 ms
switch-off time min 100 ms
weight 0,3 kg
dimensions 70 x 115 x 50 mm
installation szyna TH35
capacitor power 4,5 kvar/270 µF/230 V
communication RS485 Modbus/RTU

Łącznik tyrystorowy LH 1/75

 

  • 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

 

  • 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
Parameter Value
power supply voltage 24 VDC+10%
power consumption max up to 3 VA
ambient temperature -25°C 60°C
relative humidity 50% dla +40°C, 90% dla 60°C
casing protection class IP20
control voltage 24 VDC +10%
prąd znamionowy 75 A
napięcie znamionowe 150-400 VAC
frequency 50 Hz
alarm relay output 250 V/5 A NO/NC
switch-on time up to 20 ms
interval between the subsequent cycles up to 20 ms
switch-off time min 100 ms
weight 1 kg
dimensions 110 x 170 x 87 mm
installation szyna TH35
capacitor power 17 kvar/1050 µF/230 V
communication RS485 Modbus/RTU

Łącznik tyrystorowy LH 3/20

 

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

 

  • 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
Parameter Value
power supply voltage 24 VDC+10%
power consumption maksymalnie do 3 W
ambient temperature -25°C 60°C
relative humidity 50% dla +40°C, 90% dla 60°C
casing protection class IP20
control voltage 24 VDC +10%
prąd znamionowy 20 A
napięcie znamionowe 150-400 VAC
frequency 50 Hz
alarm relay output 250 V/5 A NO/NC
switch-on time up to 50 ms
interval between the subsequent cycles min 100 ms
switch-off time do 20 ms
weight 0,3 kg
dimensions 85x118x50 mm
installation szyna TH35
capacitor power 12,5 kvar/3x80 µF/400 V
communication RS485 Modbus/RTU

Łącznik tyrystorowy LH 3/75

 

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

 

  • 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
Parameter Value
power supply voltage 24 VDC+10%
power consumption max up to 3 W
ambient temperature -25°C 60°C
relative humidity 50% for +40°C, 90% for 60°C
casing protection class IP20
control voltage 24 VDC +10%
prąd znamionowy 75 A
napięcie znamionowe 150-400 VAC
częstotliwość 50 Hz
alarm wyjście przekaźnikowe 250 V/5 A NO/NC
switch-on time up to 50 ms
interval between the subsequent cycles min 100 ms
switch-off time up to 20 ms
weight 1 kg
dimensions 115x177x87 mm
installation szyna TH35
capacitor power 50 kvar/3x332 µF/400 V
communication RS485 Modbus/RTU
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