FIELD: electric engineering, can be implemented for control and protection of insulation of electricity consumers, operating in networks with solidly grounded neutral line.
SUBSTANCE: leak current through insulation from network voltage in zeroing conductor is let through nonlinear indicator. If large current values are the case, low inner resistance of indicator is received, guaranteeing safe disabling by protective zeroing. To measure resistance of insulation dependence of voltage falling on indicator from insulation resistance is used.
EFFECT: higher sensitivity of insulation control.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR PROTECTING DE-ENERGIZING OF A MOBILE ELECTRIC MECHANISM IN A POWER SUPPLY LINE WITH TRANSFORMER GROUND NEUTRAL | 0 |
|
SU1390686A1 |
| DEVICE TO PROTECT AND TEST RESISTANCE OF INSULATION OF ELECTRIC APPARATUSES | 2000 |
|
RU2183375C2 |
| 0 |
|
SU561910A1 | |
| DEVICE FOR CHECKING NEUTRAL CONDUCTOR OF OVERHEAD LINES FOR CIRCUIT CONTIN UITY | 2002 |
|
RU2230415C1 |
| DEVICE FOR CONTROL OF ZERO CONDUCTORS INTEGRITY IN LINES OF 0,38 kV | 2007 |
|
RU2348094C2 |
| INSULATION CONTROL SYSTEM FOR ELECTRIC CIRCUITS WITH BLIND-EARTHED NEUTRAL | 2019 |
|
RU2737349C1 |
| DEVICE FOR PROTECTIVE DISCONNECTION ELECTRIC INSTALLATION WITH EARTHING MAIN LINE CONNECTED TO PROTECTIVE LINE OF DISTRIBUTION STATION | 0 |
|
SU982135A1 |
| DEVICE FOR PROTECTIVE DISCONNECTION IN AC CIRCUIT WITH GROUNDED NEUTRAL | 1997 |
|
RU2124794C1 |
| METHOD FOR SAFE USE OF ELECTRIC APPLIANCES AND DEVICE FOR ITS IMPLEMENTATION | 1993 |
|
RU2040840C1 |
| METHOD OF MONITORING INSULATION RESISTANCE IN AN ELECTRICAL NETWORK WITH INSULATED NEUTRAL | 2020 |
|
RU2725898C1 |
