FIELD: electrical engineering.
SUBSTANCE: proposed surge arrester has discharge current path with at least one varistor unit. In order to prevent cracking of varistor units in case of internal damage and associated electric arc provision is made for coating at least one varistor unit in vicinity of side surface with definite material that initiates electric breakdown when varistor unit temperature exceeds critical value.
EFFECT: enhanced reliability of power network protection against voltage surges.
9 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR SUPERPOSITION OF ELECTRIC INSULATING SHELL OVER VARISTOR UNIT, AND ALSO VARISTOR UNIT FOR OVERVOLTAGE PROTECTION DISCHARGER | 2006 |
|
RU2382428C2 |
| INSULATING SYSTEM | 2008 |
|
RU2483378C2 |
| OVERVOLTAGE PROTECTION DEVICE | 2012 |
|
RU2560715C2 |
| INSERT DISCHARGE ARRESTER OF OVERVOLTAGE PROTECTION | 2007 |
|
RU2407122C1 |
| CURRENT FUSE WITH ADDITIONAL MECHANICAL CIRCUIT BREAKER, PREFERABLY IN FORM OF STRIKER, FOR USE IN OVERVOLTAGE PROTECTION DEVICES | 2007 |
|
RU2407127C2 |
| EXCESS-VOLTAGE SUPPRESSOR WITH EXTENDABLE CUP | 2011 |
|
RU2575917C2 |
| DISCHARGER FOR OVERVOLTAGE PROTECTION | 2012 |
|
RU2583046C1 |
| HIGH-VOLTAGE BUSHING | 2000 |
|
RU2235398C2 |
| SURGE PROTECTOR WITH FRAMED STRUCTURE AND METHOD OF MAKING SAID SURGE PROTECTOR | 2006 |
|
RU2378727C1 |
| DISCHARGER FOR OVERVOLTAGE PROTECTION | 1999 |
|
RU2218622C2 |
