S210-12-1 Three-Phase Pad-Mounted …

1 Effective August 2013. Distribution Transformers Supersedes February 2013 S210-12-1 . Three-Phase Pad-Mounted compartmental type installation and maintenance instructions DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY. The information, recommendations, descriptions and safety notations in this document are based on Eaton Corporation's ( Eaton ) experience and judgment and may not cover all contingencies. If further information is required, an Eaton sales office should be consulted. Sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other contractual agreement between Eaton and the purchaser.

2 THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES. OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY. EXISTING CONTRACT BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON. THE. CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES. In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or other- wise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the information, recom- mendations and descriptions contained herein.

3 The information contained in this manual is subject to change without notice. ii Three-Phase Pad-Mounted compartmental type installation and maintenance instructions S210-12-1 August 2013 Contents safety information Safety Information .. IV. product information Introduction .. 1. Acceptance and Initial Inspection .. 1. Handling .. 1. Storage .. 2. installation instructions installation Location .. 2. Mounting the Transformer .. 2. Pre-Service Inspection (Exterior) .. 2. Pre-Service Inspection (Interior) .. 3. External Connections .. 4. Accessories Liquid Level Gauge ..5. Liquid Temperature Gauge.

4 5. Pressure-Vacuum Gauge ..6. Pressure Relief Device .. 6. Switches and Protective Devices Bay-O-Net Fuse.. 7. Internal Cartridge Fuse .. 10. Internal Loadbreak Switches .. 11. Tap-Changer .. 12. Dual-Voltage and Delta-Wye Switch .. 14. Vacuum Fault Interrupter (VFI) .. 15. Air Switches (Arc Strangler ) .. 16. Surge Arresters ..17. maintenance Exterior maintenance .. 19. Cabinet Interior maintenance .. 19. Tank Internal maintenance .. 19. Tank Cover Removal and installation .. 19. Bushing Removal and Replacement .. 22. Cabinet Removal and installation .. 22. Insulating Liquid maintenance .

5 22. Operation Operation .. 24. Applicable Standards Applicable Standards .. 25. Spare Parts and Service Spare Parts and Service .. 25. Three-Phase Pad-Mounted compartmental type installation and maintenance instructions S210-12-1 August 2013 iii ! ! SAFETY. FOR LIFE Safety for life SAFETY. FOR LIFE. Eaton's Cooper Power Systems products meet or exceed all applicable industry standards relating to product safety. We actively promote safe practices in the use and maintenance of our products through our service literature, instructional training programs, and the continuous efforts of all Eaton's Cooper Power Systems employees involved in product design, manufacture, marketing, and service.

6 We strongly urge that you always follow all locally approved safety procedures and safety instructions when working around high voltage lines and equipment, and support our Safety For Life mission. Safety information The instructions in this manual are not intended as a Safety instructions substitute for proper training or adequate experience Following are general caution and warning statements that in the safe operation of the equipment described. apply to this equipment. Additional statements, related to Only competent technicians who are familiar with this specific tasks and procedures, are located throughout the equipment should install, operate, and service it.

7 Manual. A competent technician has these qualifications: Is thoroughly familiar with these instructions . DANGER. I s trained in industry-accepted high and low-voltage safe Hazardous voltage. Contact with hazardous voltage operating practices and procedures. will cause death or severe personal injury. Follow all locally approved safety procedures when working I s trained and authorized to energize, de-energize, clear, around high- and low-voltage lines and equipment. and ground power distribution equipment. I s trained in the care and use of protective equipment such as flash clothing, safety glasses, face shield, hard hat, rubber gloves, clampstick, hotstick, etc.

8 WARNING. Following is important safety information. For safe Before installing, operating, maintaining, or testing installation and operation of this equipment, be sure to this equipment, carefully read and understand read and understand all cautions and warnings. the contents of this manual. Improper operation, handling or maintenance can result in death, severe personal injury, and equipment damage. Hazard Statement Definitions This manual may contain four types of hazard WARNING. statements: This equipment is not intended to protect human DANGER life. Follow all locally approved procedures and safety practices when installing or operating this Indicates a hazardous situation which, if not avoided, equipment.

9 Failure to comply can result in death, will result in death or serious injury. severe personal injury and equipment damage. WARNING WARNING. Indicates a hazardous situation which, if not avoided, Power distribution and transmission equipment must could result In death or serious injury. be properly selected for the intended application. It must be installed and serviced by competent CAUTION personnel who have been trained and understand proper safety procedures. These instructions are Indicates a hazardous situation which, if not avoided, written for such personnel and are not a substitute could result in minor or moderate injury.

10 For adequate training and experience in safety Caution: Indicates a hazardous situation which, if procedures. Failure to properly select, install or not avoided, could result in equipment damage only. maintain power distribution and transmission equipment can result in death, severe personal injury, and equipment damage. iv Three-Phase Pad-Mounted compartmental Type installation and maintenance instructions S210-12-1 August 2013 IMPORTANT Handling Special procedures must be followed when handling Do not Exceed Transformer Ratings. Transformers transformer in ambient temperatures below -20 C.