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One of IETS' strengths is in the maintenance, upgrade and repair of HV Substation/High Yard equipment. Our past experience has prepared our engineers to test and repair a multitude of High Yard components such as OCB's, SF6 Breakers and transformers. All of our engineers are experienced in the utility based testing procedures required on this type of equipment.
Emergency- 24/7 Service
All Switchgear Manufacturers
Custom Preventative Maintenance Programs
Shutdown/Outage Maintenance
Thermographic Inspection & Analysis
Complete Testing & Repair- Relays, Switches, Cables, Bus, Transformers, Network Protectors, Starters
Circuit Breakers & MCC's- All manufacturers
OCB Maintenance & Repair
A few of years ago, IETS discovered a leaking bushing
on a customer’s MV oil switch during a routine maintenance service contract. We
recommended replacing
the bushing connections
with an OEM supplied part when the
customer had time for
another outage at a later date.
After
reviewing our report, the
customer asked that we
provide replacement
bushings and install them
so that the situation would
not deteriorate. We
discovered from the OEM that because of an unsafe design, the product was no longer
supported. The customer decided that due to the safety concerns and the age of this oil switch (over 20 years), IETS should replace the oil switches. Our engineers were able to design a replacement that allowed the customer to use his existing silicone filled transformer, through an insulated (dry) cabling transition to an SF6 / Vacuum
replacement MV switch.
This gave the customer an updated /safer design and the ability for
selective switching of this substation.
