FIELD: electrical engineering; ground-fault protection of insulated-neutral three-phase lines, electric shock prevention in case of inadmissible reduction of insulation resistance. SUBSTANCE: gradual variation of resistance of nonlinear component 10 connected through current-limiting resistor 11 in parallel with auxiliary current supply 6 enables re-distribution of current in circuit of element incorporated in output relay component 7 in case of voltage fluctuations in line under protection thereby varying magnetic flux difference in it. EFFECT: improved stability of operating settings. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR PROTECTING THREE-PHASE CIRCUIT WITH INSULATED NEUTRAL FROM GROUND LEAKAGE | 0 |
|
SU1589347A1 |
| ARRANGEMENT FOR PROTECTING AGAINST GROUND LEAKS | 0 |
|
SU1372445A2 |
| METHOD FOR DETERMINING LEAK CURRENT | 0 |
|
SU1483408A1 |
| METHOD OF DETERMINATION OF PHASE CURRENTS TO EARTH IN SYSTEMS WITH INSULATED NEUTRAL CONDUCTOR | 1987 |
|
RU2034304C1 |
| METHOD OF MEASURING LEAK CURRENT | 0 |
|
SU1465832A1 |
| 0 |
|
SU299910A1 | |
| METHOD OF DETERMINING LEAK CURRENT | 0 |
|
SU1483406A1 |
| DEVICE FOR LEAKAGE-TO-GROUND CURRENT PROTECTION OF CABLE NETWORKS | 0 |
|
SU1644279A1 |
| DEVICE FOR PROTECTING THREE-PHASE NETWORK FROM LEAKAGE CURRENT TO EARTH | 0 |
|
SU905929A1 |
| METHOD OF DETERMINING LEAK CURRENT | 0 |
|
SU1483407A1 |
