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Extra resources for 1095-1989 (R IEEE Guide for Installation of Vertical Generators and Generator. Motors for Hydroelectric Applications

Example text

003 in from a straight line joining the top and bottom points. The shaft assembly shall be considered to be plumb when the top and bottom points do not deviate from plumb by more than 1/4 mil/ft of shaft length. 14 Assembly of Rotating Exciters (If Provided), Collector Rings, and Brush Rigging. 12 Equalizing the Load on Adjustable-ShoeType Bearings. Adjustable-shoe-type bearings must be properly adjusted in order t h a t the thrust load will be equally divided among all of the bearing shoes. There are various types of bearing designs which afford a means of reading the shoe loading directly.

If vibration becomes excessive a t any time while the unit is being brought up t o rated speed, the unit should be shut down and balanced a s described in Section 12. During no-load operation, various checks and adjustments of the turbine and governor are normally made. 12. Balancing The rotating parts of the generator should be in dynamic balance. This may require the addition of balance weights to the rotor. Their size a n d location a r e , in some cases, determined entirely by trial a n d error; however, it i s usually desirable t o take measurements that will define the horizontal motion of the shaft under various conditions and, from this data, calculate the size and location of the balance weights required.

003 in from a straight line joining the top and bottom points. The shaft assembly shall be considered to be plumb when the top and bottom points do not deviate from plumb by more than 1/4 mil/ft of shaft length. 14 Assembly of Rotating Exciters (If Provided), Collector Rings, and Brush Rigging. 12 Equalizing the Load on Adjustable-ShoeType Bearings. Adjustable-shoe-type bearings must be properly adjusted in order t h a t the thrust load will be equally divided among all of the bearing shoes. There are various types of bearing designs which afford a means of reading the shoe loading directly.

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1095-1989 (R IEEE Guide for Installation of Vertical Generators and Generator. Motors for Hydroelectric Applications


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