GE Aftermarket Catalog

Services and Spare Parts Transformer Substation Services

Overview Today’s demands on power substations are greater than ever before, challenging operators to maintain a continuous, reliable power supply and reduce costs. A rigorous, proactive mainte- nance program is the key to minimizing transformer failures and unplanned outages. GE Energy’s experienced transformer services team can help you develop and implement an effective trans- former maintenance plan while making the most efficient use of your budget. Whether you need a day of service on a single unit, or comprehensive plan for your entire transformer network, GE Energy can: • Evaluate the condition of your equipment and status of exist- ing maintenance programs • Structure a maintenance plan to balance your needs with your budget • Plan the required services according to your schedule • Perform the required work – on time, on budget With decades of experience servicing transformers at customer sites, GE Energy has the resources to meet your substation needs. Dielectric Fluid Services Annual dielectric fluid analysis is the single most important ele- ment of an effective transformer maintenance plan. Routine test- ing and appropriate corrective treatments minimize the damage to internal components, reduce the risk of an unplanned outage, and dramatically increase the life expectancy of the unit. Test results can also be used to assess the mechanical condition of the transformer and indicate specific repairs which may be required. GE Energy offers comprehensive dielectric fluid services to detect fluid degradation in its early stages and provide customized pre- ventive maintenance solutions, including: • Oil sample collection and laboratory testing • Dehydration services - on energized or de-energized equipment — Standard multi-pass dehydration — Vacuum dehydration with cryogenic pump (cold trap) moisture collection services — In-shop “oven bake” and vacuum chamber dehydration

• Degasification services • Complete reclamation of fluid, including flushing of the core and coil • Special fluids services

— Silicone — RTemp — FR3

Fluid services projects can be managed by GE, or you can lease our crews and equipment for in-house project management.

Mechanical Services Our experienced technicians can also assist with mechanical maintenance requirements, including: • Installation, assembly and fill of new transformers • Complete repairs — Bushing replacements — Regasketing • Exterior restoration Load Tap Changer (LTC) Maintenance For units with LTCs, the LTC is a key component and, without proper maintenance, can be a leading cause of failure. GE Energy can evaluate the condition of your LTC by sampling oil from the energized transformer. Test results indicate what type of mainte- nance needs to be performed offline, minimizing down-time. Our services include: • Complete internal inspection and contact or interrupter replacement • Maintenance to original equipment manufacturer (OEM) specifications • Rebuild and repair • Validation of alarms and protective devices • Upgrade obsolete electro-mechanical controls with modern solid state controls • Long-term maintenance programs to maximize the reliability of your LTC

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Prices and data subject to change without notice