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6-2-2-2-proverka-generatora-na-stende.html
6.2.2.2. Generator check at the standThe scheme of connections of the generator at the stand for check
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1 – the voltmeter;
2 – the switch;
3 – the ampermeter;
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4 – the storage battery;
5 – a rheostat;
6 – the generator |
Check at the stand allows to define serviceability of the generator and conformity of its characteristics to the nominal. At the checked generator of a brush rings the pure should be ground well in to contact rings of a collector, and.
| PERFORMANCE ORDER |
| 1. Establish the generator on the stand and execute connections as is shown in fig. the Scheme of connections of the generator at the stand for check. |
| 2. Include the stand electric motor, a rheostat 5 establish pressure on an exit of the generator 14 In and finish frequency of rotation of a rotor to 5000 mines-1. Allow to the generator to work on this mode not less than 2 mines, and then measure a return current strength. At the serviceable generator it should be not less than 44 And. |
| 3. If the measured size of a given current is much less, it speaks about malfunctions in windings статора and a rotor, about damage of gates or deterioration of contact rings and brushes. In this case careful check of windings and gates is necessary to define a malfunction place. |
| 4. At suspicion on malfunction of gates выпрямительного the generator block, check up a return current strength on the heated-up generator. Such check allows to reveal better malfunction of gates on sharp decrease in a current of return at generator rise in temperature. |
| 5. For warming up allow to the generator to work not less than 15 mines at frequency of rotation of a rotor of 5000 mines-1 and pressure 14 In on a generator exit. Then measure a return current strength. On the heated-up generator it should be not less than 42 And. |
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