Substation On-Site Switchgear & Circuit Breaker Inspection, Maintenance, Repair, and Testing Services: "Blackman", "Twin Oaks", "Main Ave." Substations The main scope of work for this project is to perform routine 5 year recommended maintenance of Substation Switchgear & Breaker Equipment IAW the NETA Maintenance and Testing Standards for Electrical Power Distribution Equipment & Systems. ALL EQUIPMENT TESTING shall be done with OMICRON Brand Test Equipment and all files will be stored and delivered as a PDF report and uploadable file. Some of the services include but are not limited to: SWITCHGEAR
1. Thoroughly clean the equipment, removing all dust and other accumulations. Wipe clean the buses and supports. Inspect the buses and connections carefully for evidence of overheating or weakening of the insulation.
2. Clean mechanisms and lubricate wear points.
3. Check primary disconnecting device contacts for signs of abnormal wear or overheating. If necessary, clean contacts.
4. Inspect all primary and secondary disconnecting contacts (such as those on roll-out transformers) for abnormal wear, fatigue, or overheating. Replace, if necessary.
5. Control Contacts should be inspected and dressed or replaced when the surface becomes seriously pitted.
6. Secondary Wiring should be checked for tightness, including those at the current and potential transformers and at the terminal blocks where circuits leave the switchgear. Make sure that all secondary wiring connections are properly connected to the switchgear ground bus where so indicated.
7. Visually check and manually operate mechanical moving parts such as the shutter, TOC and MOC switch assemblies, the position interlock, hinged doors, and the roll-out features of the transformers and fuses. Examine mechanical mating parts such as the levering-in arms and the guide channels.
8. Check all labyrinths, grillwork, and air passages for obstructions and accumulations of dirt. The air space under outdoor switchgear, which is necessary for the entrance of ventilating air, should be cleaned of leaves and other possible debris. Replace or clean dirty filters.
9. Check for proper operation of the battery charger and remove accumulations of debris, dust, and dirt. On all chargers having a manual transfer switch for setting the charging rate, check carefully to be sure that the selector switch is returned to the value appropriate for a floating charge at the end of the periodic inspection.
10. Check to see that all anchor bolts and bolts in the structure are tight.
11. If the switchgear is equipped with heaters, check to see that all heaters are working properly.
12. Record all maintenance activities and report abnormal findings. Work is expected to be performed and completed between October 10th, 2022 and December 16th, 2022. Questions should be directed to: James Griffith BUYER I, [P] (417) 831-8946, [F] (417 831-8377, [E] james.griffith@cityutilities.net and Purchasing Department, City Utilities of Springfield, Missouri, [P] (417) 831-8363, [F] (417) 831-8377, [E] purchasing@cityutilities.net CU reserves the right to waive informalities and to accept or reject any and all responses submitted.
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