LOW VOLTAGE INDUCTORS/REACTORS

LOW VOLTAGE INDUCTORS/REACTORS

The network reactances usually operate in cooperation with power converters in low voltage electrical systems. They are usually installed on the side of the power supply (before the converter), in alternate current with a main frequency as the fundamental component. Line inductors are also characterized by the large linearity of their inductance curve (L = f [I]). The network reactances are produced in accordance with the requirements of the international standards IEC 61558-2-20 / IEC 60076-6.

Converter outputs

Inductors for motors are applied to the outputs of the low voltage frequency converters and the motor currents flow through them. They compensate currents with load-reversing capacity in the case of long cables and limit, for suitable long motor cables, du/dt at motor terminals, providing power to the motor with the longest cabling possible. Inductors for motors are produced in accordance with the requirements of the international standards IEC 61558-2-20 / IEC 60076-6.

Converter inputs

- Limits the di/dt rate of change and the impact of the switching (keying) of the converters, supplied by the same transformer;

- Reduces the harmonic content of the current, providing:

. Increase in power factor;

. Reduction of the effective current;

. Reduction of network voltage distortion;

. Attenuation of undervoltage or overvoltage transients from the converter network and support the action of ultrafast fuses.

- Insulation class: F (Standard) or B (as requested);

- Degree of protection: IP-00 (suitable for sheltered installation);

- Frequency: up to 400HZ;

- Terminals: connectors for cables from 1.5 to 10mm² or terminal lugs or copper bars for currents greater than 60A;

- Fixing with metal base.

Converter outputs:

- Reduction in the du/dt voltage gradient at the motor source terminals;

- More distant cables, from the motor source, are possible;

- Reduction in peaks of capacitance currents of load-reversion and, consequently, of the optimum use of the converter capacity;

- Safety of the highest installation;

- Compact design;

- Degree of protection: IP-00 (suitable for sheltered installation);

- Frequency: up to 400HZ;

- Terminals: connectors for cables from 1.5 to 10mm² or terminal lugs or copper bars for currents greater than 60A;

- Fixing with metal base.


Converter outputs:

- Reduction in the du/dt voltage gradient at the motor source terminals;

- More distant cables, from the motor source, are possible;

- Reduction in peaks of capacitance currents of load-reversion and, consequently, of the optimum use of the converter capacity;

- Safety of the highest installation;

- Compact design;

- Degree of protection: IP-00 (suitable for sheltered installation);

- Frequency: up to 400HZ;

- Terminals: connectors for cables from 1.5 to 10mm² or terminal lugs or copper bars for currents greater than 60A;

- Fixing with metal base.

Converter inputs:

They are used on the side of a drive input, to protect them from over-voltage transients. The main function of line reactors is to protect from rapid changes in current due to their impedances.


Converter outputs:

The standard types can be used for converter output frequencies up to 400Hz and switching frequency up to 3kHz.

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