FIELD: electrical engineering; in-service checkup of electrical machine insulation at its end connections.
SUBSTANCE: proposed device designed to detect faults in insulation near end portions beyond sections covered with semiconductor materials, insulation of end portion head boxes, insulation of output and interconnecting buses, insulation of binding rings and winding holders has high-voltage supply and insulating rod with test electrode. Novelty is that high-voltage supply has generator connected at its output to step-up transformer whose secondary winding leads are connected to rectifier-multiplier one of whose leads is connected to high-voltage lead of high-voltage power supply and other lead, to ground through microammeter. Rod-mounted test electrode is connected to high-voltage lead of high-voltage power supply.
EFFECT: enhanced reliability of ground detection without destructive actions; facilitated handling of this portable device.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRECISE DETECTION OF LOCATION OF COIL SHORTING IN ANCHOR WINDINGS OF COLLECTOR ELECTRIC MACHINES WITH EQUIPOTENTIAL BONDINGS | 2005 |
|
RU2308730C2 |
| DEVICE FOR PRODUCING TEST VOLTAGE | 1997 |
|
RU2173860C2 |
| 0 |
|
SU1781779A1 | |
| METHOD OF ELECTRICAL EQUIPMENT INSULATION CHECK | 1997 |
|
RU2145421C1 |
| METHOD OF TURN-TO-TURN SHORT CIRCUIT DETECTION IN WINDING OF ROTATING ARMATURE OF ELECTRICAL COLLECTOR MACHINE WITH EQUALISING CONNECTIONS | 2012 |
|
RU2523730C2 |
| INSULATION TEST PLANT FOR ELECTROTECHNICAL OBJECTS | 2016 |
|
RU2621479C1 |
| GEAR TESTING INSULATION OF POWER CABLE AND SOLID DIELECTRIC | 2002 |
|
RU2211456C1 |
| DEVICE FOR FIXING FRONTAL PART OF ROTOR WINDING | 0 |
|
SU1065970A1 |
| METHOD FOR ACCURATE DETECTION OF FAULTS BETWEEN FIRST SPECIES EQUALISERS OF SIMPLEX LAP WINDING OF COMMUTATOR MACHINE ARMATURE | 2010 |
|
RU2456626C1 |
| MOBILE HIGH-VOLTAGE INSTALLATION FOR TESTING POWER TRANSFORMERS | 2021 |
|
RU2780706C1 |
