Howard Medium Power Substation User Manual

Page 15

background image

Medium Power Substation Transformers

Document 2.4.06, Revision 4

June 2013


8. Delta/Wye and Series/Multiple Switch Settings.

Check delta/wye and series/multiple switch

settings to make sure they are set correctly. If

these connections are made using an internal

terminal board, check to ensure that these

connections are made properly according to

the chart on the transformer nameplate. If

the transformer is equipped with an internal

terminal board, refer to Page 10 for instructions

and warnings prior to opening tank.

9. Grounding. Check to ensure that the

transformer tank is permanently and effectively

grounded. The transformer tank ground pad is

located near the bottom of the tank.

10. Wiring. Check wiring of control and alarm

circuits (if provided) to make sure there are no

loose connections and no damage to insulation.

11. Fluid level. Check to make sure the fluid

level as indicated by the fluid level gauge is as

indicated on Page 17.

12. Tank Finish. Check all painted surfaces to

make sure that there is no damage or corrosion.

13. Bolted Connections. Check all bolted

connections for tightness.

14. Tools. Check to make sure that all tools and

equipment are accounted for and have been

removed from the transformer.

15. Fluid Temperature. Read the fluid temperature

gauge and make sure the temperature is no

lower than minus 20°C before the unit is