Computing Platform/Gateway operate in harsh environments.

Press Release Summary:

Substation Computing Platform, Model SEL-3351, can be configured with protocol conversion, HMI, event report retrieval, sequential events recorder reporting, automatic control, software logic, self-diagnostics, system configuration, and data concentration. Protocol Gateway, Model SEL-3301, converts 5 base protocols to connect older and newer equipment. Both products meet IEEE C37.90 and IEC requirements, have no moving parts, and operate from -40 to +75°C.

Original Press Release:

New Rugged Computing Products from SEL Improve Reliability and Decrease Maintenance in Electrical Substations and Plants

Pullman, WA -- Schweitzer Engineering Laboratories, Inc. (SEL), a leading manufacturer of protection, monitoring, control, automation, and metering equipment, announces the customizable SEL-3351 Substation Computing Platform designed to replace office-grade PC's in substation environments and the SEL-3301 Protocol Gateway for connecting older and newer equipment. These new rugged computing products improve reliability and decrease maintenance in electrical substations and plants.

SEL computing products deliver unprecedented reliability in harsh substation environments because they are designed and tested to meet IEEE C37.90 and IEC requirements, have no moving parts or fans, operate over the range of -40° to +75°C, and have an innovative watchdog processor to detect and alarm system problems. The products are also backed by the SEL worldwide, ten-year product warranty.

The SEL-3351 System Computing Platform is a customized solution configured by the SEL Systems and Services Division (SSD). SEL-3351 configuration options include protocol conversion, HMI, event report retrieval, Sequential Events Recorder (SER) reporting, automatic control, software logic, self-diagnostics, system configuration, and data concentration. SSD will also load customer-specified software and hardware. In addition, SSD provides engineering services, including design and configuration of substation automation and integration systems.

The SEL-3301 Protocol Gateway provides reliable protocol conversion to connect older and newer equipment. System engineers can upgrade SCADA masters and remote systems at different times, allowing them to phase capital expenditures and prolong the useful life of legacy assets. The SEL-3301 converts five base protocols. On request, SEL can provide additional protocols from a library of 108 available protocols.

Analyses of recent power system blackouts and malicious acts reveal that now, more than ever, accurate field condition information needs to reach control centers. This information helps operators prevent or respond quickly to power system events.

To collect valuable system information, the equipment in the information path between the field and control center must operate reliably in harsh environments. The weak link in a substation instrumentation and control system is often the computer. Desktop computers are designed for environmentally controlled offices and homes, and industrial computers often have the same electronics as desktop PCs. SEL's rugged computing platforms replace this weak link in the system.

SEL has been designing electronic products for substation environments for more than 20 years. SEL has been rated #1 by utilities in the Worldwide Study of the Protective Relay Marketplace in Electric Utilities: 2002-2005 and 2004-2006. The Newton-Evans Research Company conducts this study.

Contact SEL for help eliminating the weak links from your SCADA, instrumentation, and automation systems. Phone (509) 332-1890; fax (509) 332-7990, mail 2350 NE Hopkins Court, Pullman, WA, 99163-5603, or online at

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