FIELD: electrical engineering; protection of electrical machines and installations.
SUBSTANCE: device has supply mains generator with metering circuit, actuating element connected to supply mains through rectifier, and final element connected to supply mains generator, load, and rectifier output. Rectifier supplies with power metering circuit and actuating element. Metering circuit output is connected to one of inputs of actuating element whose output is connected to control input of final element. Actuating element is made in the form of series-connected thyristor and final-element control winding.
EFFECT: simplified design, enlarged functional capabilities, improved metrological characteristics.
10 cl, 10 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DIFFERENTIAL DEVICE FOR GROUND FAULT DETECTION AND PROTECTION OF ELECTRICAL MACHINES AND APPARATUSES | 2004 |
|
RU2271059C1 |
| ELECTRICAL EQUIPMENT GROUND FAULT TEST SYSTEM AND EQUIPMENT OPERATOR PROTECTIVE GEAR | 2006 |
|
RU2304833C1 |
| BLOCK-SET GAS-DISTRIBUTING STATION WITH AUTONOMOUS ELECTRIC POWER SYSTEM | 2004 |
|
RU2270395C2 |
| DEVICE FOR SELECTIVE PROTECTION FROM ONE-PHASED AND MULTI-PHASED GROUND SHORT CIRCUITS OF ELECTRIC CABLE NETWORK WITH ISOLATED NEUTRAL | 2006 |
|
RU2317623C1 |
| DEVICE FOR CHECKING INSULATION RESISTANCE AND LEAKAGE CURRENT IN POWER INSTALLATIONS | 2002 |
|
RU2229764C1 |
| DEVICE TESTING INSULATION RESISTANCE AND PROTECTING ELECTROTECHNICAL INSTALLATION WITH SUPPRESSION OF FIELD OF ELECTRIC ENERGY GENERATOR | 2000 |
|
RU2189603C2 |
| DEVICE FOR COMPLEX PROTECTION OF ELECTRIC SYSTEM | 1995 |
|
RU2115986C1 |
| ELECTRICAL INSTALLATION GROUND DETECTING AND PROTECTIVE DEVICE | 1999 |
|
RU2157039C1 |
| DEVICE TO PROTECT AND TEST RESISTANCE OF INSULATION OF ELECTRIC APPARATUSES | 2000 |
|
RU2183375C2 |
| DEVICE FOR PROTECTION AND MONITORING OF RESISTANCE OF INSULATION OF ELECTRIC EQUIPMENT | 1999 |
|
RU2158996C2 |
