L'explication/l'anotation:To protect electric equipment of transformer station and ac networks hour
òîòîé 50 cycles from atmospheric and short-term commutation ïåðåíàïðÿ
æåíèé
La description détaillée de marque:To protect transformer station electric equipment and networks of variable
current by the frequency 50 cycles from atmospheric and short-term commutation p
ðåíàïðÿæåíèé.
the active part of clippers consists of succession ñîåäèíå
ííûõ zno resistors with high linear voltage-current of õàðàê òåðèñòèêîé.
the internal cavity of tyre with resistors shall be filled in òåïëîïðîâ
îäíûì composition.
the protective effect can be explained by the fact that in case of appearing of dangerous to èçîë
over-extension ÿöèè elapsing through clipper the pulse current âñëå
äñòâèå of high non-linearity of resistors shall not create dangerous to èçîëÿöè
and voltage rise.
priority
- low protective level for all types of over-extensions
- high energy intensity
- enhanced resistance to pollution effects
- explosion safety and seismic resistance
small sizes and mass
technical characteristics
class of network voltage, apartment. 3
maximum operating voltage, apartment. 3, 6
voltage on clipper, kW
20 minute. 4, 3
20 S.. 4, 75
1 S.. 5, 15
0, 15 S. 5, 5
nominal discharge current, K.. 10
design current of commutation
over-extension at a wavelength of 30/60 usec, A.. 400
discharge voltage in case of
design current
switching overvoltage,
not more, apartment. 8, 7
discharge voltage in case of wave
pulse current
8/20 usec , with amplitude, not more, kW
250 A.. -
500 A.. 8, 8
2500 A.. -
5000 A.. 10, 6
10000 A.. 11, 3
twentyfold current throughput
ability
in case of right-angled current wave
duration 2000 usecs. 4
00
in case of wave of pulse current 8/20 usec, K.. 10
twofold current throughput
ability
in case of wave of pulse current 4/10 usec, K.. 65
leakage path length of outside insulation,
no less than, refer to. 9, 0
permissible |
