MEDIUM VOLTAGE INDUCTORS/REACTORS

MEDIUM VOLTAGE INDUCTORS/REACTORS

Converter Inputs

Network reactances generally operate in cooperation with power converters in medium 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. The 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.

Output Converters

Inductors for motors are applied to the outputs of converters of medium voltage frequency, 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 international standards IEC 61558-2-20 / IEC 60076-6

Converters inputs

- Limits the di/dt rate of change and the switching impact (keying) of the converters fed 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 in 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.


Output Converters

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

- Safety of the highest installation;

- Compact construction;

- 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 by means of metal base.


Converter Inputs

They are used on the side of a drive input, to protect it 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 frequencies of the converter output up to 400Hz and switching frequency up to 3kHz.

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