Description

Our capacitor banks with detuned filters have been designed for power compensation purposes in networks with fluctuating load levels, a high content of harmonics and where there is a risk of resonance. Power variations are relatively slow (in seconds) so that the switching operations are carried out with contactors.

Applications

Its application is mainly focused on the compensation of installations with different loads, which require a regulated compensation, as a result of the power factor variations and where there is a high content of harmonics in the network.

• Fixed detuned filters. For the compensation of transformers and motors 
• Automatic detuned filters, For the monitoring of variable loads

Technical features

Electrical features Operating voltage 400 V (50 Hz), 230/480 V (60 Hz)

(for other voltages, please ask)

Support voltage 440 V (400 V)

Capacity tolerance ± 10%

Unit composed of capacitor (460 V) Others upon request

Contactors with pre-insertion block and quick discharge resistor

Individual protection of each step with fuses with high

rupture power (HRP). NH-00 Series.

Two-pole protection circuit-breaker for capacitor bank and regulator operations.

Power factor regulator.

Detuned filters tuned at 189 Hz (50 Hz) /227 Hz (60 Hz) Others upon request for the protection against harmonics present in the network and to avoid the problems of resonance with fifth or higher order harmonics. Built-in thermostat for the disconnection of the step in case of excessive temperatures (90 ºC).

Auto-transformer

Add-ons Manual capacitor bank header switch

Automatic capacitor bank header switch

Automatic switch + Earth leakage protection at the capacitor bank’s header

Forced ventilation unit + thermostat

Polycarbonate plate to protect against direct contacts

Insulation level 3 / 15 kV

Discharge resistance 75 V / 3 minutes

Overload 1.3 times the rated current permanently

Overvoltage 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 minutes over 24 hours

Auxiliary Voltage 230 V

Ambient conditions Class D temperature Daily mean: +45 ºC

Humidity 80% HR

Altitude 2 000 m

Construction features Protection Degree IP 31 Others upon request

Colour RAL 7035 Grey Others upon request

Annual mean: +35 ºC

Maximum: +50 ºC

Minimum: -25 ºC

Assembly conditions Type of assembly Vertical

Ventilation Natural or forced,

depending on the option Distance between capacitors Minimum, 2 cm

Standards IEC 60831-1, UNE 60831-1, IEC 61921, IEC 60439, IEC 61439