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FRE
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Automatic low voltage capacitor banks Automatic capacitor banks with detuned filters and thyristors Description The capacitor banks with detuned filters of the FRE series have been designed for reactive energy correction in networks with fluctuating load levels, high harmonic presence and a risk of resonance. The power variations are relatively quick (measured in milliseconds), and the operation is thus carried out by thyristors, which are connected to a voltage controller board, so that the connection and disconnection of the capacitor is carried out with zero voltage difference. Transients are prevented between the connection and disconnection of the steps, obtaining an immediate response to the load fluctuations. Applications The most common application is with individual loads or in installations where a quick compensation response is needed (e.g. welding units, motors for lifting units, lifts, etc.) and where the network has high harmonic content. Technical features Electrical features 230, 400 V (for other voltages, please ask) Support voltage Capacity tolerance Tr connection delay Unit made up of Operating voltage CFB capacitor Static switching unit on each stage, made up of static contactors (thyristors) Protection by stage by fuses with high cut-off power (APR). NH-00 series. Two-pole circuit breaker protection for capacitor bank and regulator operations. Reactive energy regulator of the Computer MAX-f Heatsinks Built-in thermostat on the heatsink for disconnecting the stage in the case of excessive temperatures (90 ºC) Detuned filters tuned to 189 Hz for protection against harmonics present in the network and for preventing resonance with harmonics of the 5th order or higher. Manual switch on capacitor bank header Circuit breaker on capacitor bank header Circuit breaker + earth leakage protection on capacitor bank header Forced ventilation unit + thermostat Polycarbonate sheet for protection against direct contacts 400/230 V autotransformer Insulation level Discharge resistance 1.3 times the nominal hold current 10%, 8 over 24 hours 15%, up to 15 minutes over 24 hours 20%, up to 5 minutes over 24 hours 30%, up to 1 minute over 24 hours Environmental features Daily mean: 45 ºC Annual mean: 35 ºC Maximum: 50 ºC Minimum: -25 ºC Protection degree Natural or forced, in accordance with the options Distance between capacitors Mechanical features Assembly conditions

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Automatic low voltage capacitor banks Automatic capacitor banks with detuned filters and thyristors Cable section (mm2) Weight (kg) width x height x depth

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