|  tri
phase and single phase reatance and inductors
Applied in the limitation
of the short circuit current, filters of harmonicas,
weakenings
of transients, special projects in eletronics of power,
nets and installation.
Interference power sources
Interferentes produced by electronics equipments because
of the use of transistors
and tiristores can reach and ample band of frequency
(150 Khz to 20 Mhz). With high
amplitudes. In this case, for the reduction of the
amplitudes, we need right supressors
for each case. In such equipment types are used semi-conductors
with current of
locking relative-ly high.
Example:
• The motor speed control;
• Generator of high frequency;
• Locking power source;
• Static converters in general.
The power semiconductors used in such circuits generate
interferences with values of amplitude up to 1000
times by the international rules.
Characteristics:
|
|
| •
Insulators: paper, fibre, PVC, epoxi, resign,
fenolite, polyester; |
| •
Superior end of or frontal connection; |
| • Screw
or sindal type connection; |
| •
Simple set up fixing by the basis in metallic
structure; |
| • Bichromatic
hardware or synthetical enamel painting; |
| •
Dry isolation for the sheltered installation; |
| • Essayed
one by one. |
|
Technical informations:
Isolation tension
|
0,6 kV |
Frequency
|
50 or 60 Hz (or others, according consultation) |
Temperature class
|
B (130º) |
Ambient temperature
|
Maximum 45ºC, minimum - 10ºC |
| Limit of elevation of temperature
in the coiling |
80ºC |
Applied tension at industrial frequence,
1 min
|
2,5 kv effective |
Over tension limit
|
10% above detailed |
| Altitude |
Up to 1000m above the sea level |
|
