IEEE Approves Amendment to Rail Standard for Circuit Breaker Switchgear - IEEE C37.20.1b
January 22, 2007 // Published as a news service by IHS
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The Institute of Electrical and Electronics Engineers Inc. (IEEE) approved IEEE C37.20.1b - Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear - Amendment 2: Additional Requirements for Control and Auxiliary Power Wiring in DC Traction Power Switchgear.
This amendment provides additional auxiliary power and control wiring requirements for dc traction power substations having a nominal output of up to 3200 volts dc.
It is intended to improve the performance and reliability of dc traction power switchgear and reduce both initial costs and maintenance costs.
IEEE also began work on IEEE P1474.3 - Communications-Based Train Control (CBTC) System Design and Functional Allocations, which will define a preferred CBTC system design and architecture to meet the CBTC performance and functional requirements in IEEE 1474.1. It also will allocate functions to major CBTC subsystems.
IEEE is also revising IEEE P1478 - Standard for Environmental Conditions for Transit Rail Car Electronic Equipment, to address specific technical issues. This standard considers the environmental conditions under which transit rail car electronic equipment should operate and survive. These conditions depend on:
- Equipment location, such as under car, interior and truck.
- Temperature.
- Humidity.
- Water.
- Corrosive elements.
- Vibration.
- Shock.
IEEE P1478 sets a baseline for contract specifications and the design and manufacture of electronic equipment for transit rail cars.
The IEEE reaffirmed the continued use of IEEE 11 - IEEE Standard for Rotating Electric Machinery for Rail and Road Vehicles.
Source: Institute of Electrical and Electronics Engineers Inc. (IEEE).