A pharmaceutical company in Puerto Rico was experiencing over 50 power disruptions every year. In addition to losing valuable production, the resulting equipment damage was costing them over $80,000 annually.
But power disturbances weren’t their only problem. They were being assessed demand charges of over $90,000 annually by the utility company serving their facilities, due to poor power factor. Continue reading
S&C recently met an urgent request for a 230-kV Series 2000 Circuit-Switcher Model 2010 from one of our East Coast utility customers. The order was entered, and the Circuit-Switcher was built, tested, and shipped in an unbelievable three days!
How did we do it? A well-coordinated production team . . . cooperation across several divisions . . . the right parts . . . a continuous production schedule . . . and — most importantly — a corporate culture that stresses superior customer service. Power Systems Services, Switch Products, U.S. Sales, and Shipping all pulled together to make it happen.
It started with a phone call . . . Continue reading
Boone Hospital Center, located in Columbia, Missouri, is one of the largest health care facilities in the state. It specializes in cardiology, obstetrics, orthopedics, and oncology. An $18.6-Million facility renovation was recently undertaken, which includes a four-story, 80,000-square-foot addition that houses distribution, central supply/sterilization, pre-operative space, cardiac catheter labs (the first stop for heart attack and stroke patients), and new operating theaters.
When the expansion was announced, the surgical staff requested that the electrical system be protected from momentary power outages due to lightning strikes, which are very common during the summer. Continue reading
To improve the reliability of their distribution system, an investor-owned utility in the Southeastern U.S. turned to S&C to upgrade the existing electromechanical protection and control equipment on their 15-kV and 23-kV feeder breakers.
New relay panels would be required. The microprocessor-based relays would be connected to the utility’s SCADA system to improve outage response time, and thus improve the reliability indices of their distribution system. Continue reading
A maker of lens cleaning solution, located near Toronto, Ontario, has a strictly controlled manufacturing process which requires a clean room environment. Motor-driven blowers are used to maintain positive air pressure in the clean rooms.
Their facilities were experiencing a dozen or so power disturbances annually that adversely affected production. Even slight voltage sags caused the blower motor contactors to drop out, stopping the motors. Continue reading
Traditionally, substation transformer protection was provided by relayed circuit breakers or circuit-switchers, power fuses, or relayed-remote fault-interrupting schemes. Relayed protective schemes required an expensive substation control house and station batteries. Power fuses can only be applied where the continuous and fault interrupting currents are within their more limited capabilities. A new transformer protective device was developed to address the short-comings of traditional protective measures. The device has high interrupting capacity similar to circuit breakers, and higher continuous current capacity than fuses. But, like power fuses, the new device derives power for fault sensing and tripping from the fault current itself — a relay control house is not required and the need for batteries and associated maintenance is eliminated, providing the most economical protection possible. Unlike power fuses, separate secondary neutral current sensing can be applied for more sensitive protection against ground faults and three-phase tripping is possible, even for single-phase faults. Continue reading