Read or Download 1095-1989 (R IEEE Guide for Installation of Vertical Generators and Generator. Motors for Hydroelectric Applications PDF
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Additional resources for 1095-1989 (R IEEE Guide for Installation of Vertical Generators and Generator. Motors for Hydroelectric Applications
Make sure t h a t cooling water valves have been checked for the proper open or close position. Similarly, any pumps and automatic controls should be tested. Examine the interior of the stator, the air gap, exciters, collector rings, top of the rotor, and the space between poles for loose objects such a s bolts, nuts, tools, etc. Make sure that all moving parts have sufficient clearance from the nearest stationary parts. Check the electrical clearance around all parts that are to be energized. Check the tightness of all foundation bolts and hold-down bolts.
3 Load Rejection Tests. Load rejection tests for governor and excitation system settings should be performed in the sequence of increasing loads up t o full or maximum load. The unit speed and voltage rises should be carefully monitored with high response recording i n s t r u m e n t s . T h e maximum transient speed and voltage limits established by the generator manufacturer m u s t be observed and maintained and the governor and excitation system adjusted. 2 Method 2. After initial operation of the combined unit, the accuracy of the generator shaft t h r u s t surface should be checked by the procedure outlined below.
If the rotation check by method 1 is used, it shall be performed during the erection of the generator t o avoid subsequent disassembly of the machine. 11 Shaft-Plumb and Straightness Check. This is a plumb-wire check of the straightness and plumbness of the combined generator and turbine shafts. The use of four plumb lines spaced 90 degrees apart around the shaft i s recommended. T h e readings should be taken from the same points on each shaft t h a t were used during the factory runout check.