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1、PEC电气工程专业英语证书考试-Glossary of Electrical Engineering and Automation100BaseT-A synonym for the Fast Ethernet network standard. The 100 refers to a maximum data-transfer rate of 100 megabits per second over twisted pair, copper wire.10BaseT-A synonym for the Fast Ethernet network standard. The 10 refers
2、 to a maximum data-transfer rate of 10 megabits per second over twisted pair, copper wire.10K-A grade level Box or Cover rating. See Incidental Light Traffic.1A-1 Normally Open1B-1 Normally Closed20A-A California ruling that has the investor owned utilities performing the under-grounding of electric
3、al cables. The funds to perform the work are derived from rates and go into a sinking fund that is used at the discretion of the municipality the electric20B-A California ruling that has the investor owned utilities performing the under-grounding of electric cables. The funds to perform this work ar
4、e derived from a combination of rates and the developer of the land the line is on. This work is done at the di20C-A California ruling that has the investor owned utilities performing the under-grounding of overhead electrical cables. The funds to perform this work are derived from the developer of
5、the land the line is on.20K-A grade level Box or Cover rating. See Occasional Traffic.2S1W-Two Speed, 1 Winding (motor).2S2W-Two Speed, 2 Winding (motor).3 Phase-See Three Phase and Polyphase600 Volt-Electrical systems, cables or service designed to be operated under 1000 Volts.600V-UD-600 Volt Unde
6、rground Distribution Cable.802.11a-A specification for a wireless LAN that operates in the 5GHz frequency range and provides a data transmission rate of 54Mbps using spread spectrum technology.802.11b-A specification for a wireless LAN that operates in the 2.4GHz range and provides a data transmissi
7、on rate of 11Mbps using spread spectrum technology. This specification was known as Wi-Fi but the term now applies to 802a and 802g as well.802.11g-A specification for a wireless LAN that operates in the 2.4GHz frequency range and provides a data transmission rate, over short distances, of 54Mbps us
8、ing orthogonal frequency division multiplexing (OFDM) technology.802.1x-A security standard for wired and wireless LANs.AA-1) Amperes; Amps. 2) Area. For cables Area is expressed in Circular Mils.A-H-Ampere-HourA/D Conversion-The process of converting an analogue signal into an equivalent digital on
9、e utilizing an A/D converter.AA-1) The Aluminum Association. 2) Refers to All Aluminum as in All Aluminum Conductor.AAAC-All Aluminum Alloy ConductorAAC-All Aluminum Conductor.AAC/TW-All Aluminum Conductor, Trapezoidal-Shaped Aluminum Strands.AASHTO-American Association of Safety Highway Traffic Off
10、icialsAbsorbed Glass Mat-Absorbed Glass Mat, also known as AGM, is a newer type of battery construction that uses saturated absorbent glass mats rather than gelled or liquid electrolyte. It is somewhat more expensive than flooded (liquid) type, but offers good reliability and faAC-See Alternating Cu
11、rrentACAR-All Aluminum Conductor, Aluminum Alloy Reinforced.ACB-Air Circuit BreakerAccess Point-A wireless networked device usually connected to a wireless LAN used to access the wired LAN.Accuracy-The degree of uncertainty for which a measured value agrees the ideal value.Accuracy Class-A number us
12、ed to indicate the accuracy range of a measurement transducer, according to the defined standard.ACSR-Aluminum Conductor Steel Reinforced.ACSR/AW-Aluminum Conductor, Aluminum Clad Steel Reinforced.ACSR/TW-ACSR conductor made using Trapezoidal Wire construction.ACSS-Aluminum Conductor Steel Supported
13、. This is a conductor that is generally used for overhead transmission construction. ACSS is often preferred over ACSR because of its superior sag characteristics.ACSS/AW-Aluminum Conductor, Aluminum Clad Steel Supported.ACSS/TW-ACSS conductor made using Trapezoidal Wire construction.Active Material
14、 (Battery)-Material which reacts chemically to produce electrical energy when the cell discharges. The material returns to its original state during the charging process.Active Power-A term used for power when it is necessary to distinguish among Apparent Power, Complex Power and its components, and
15、 Active and Reactive Power.Adjustment-The operation intended to bring a transducer into a state of performance suitable for its use.Admittance-The reciprocal of Impedance (1/Z).ADSL-Asymmetric Digital Subscriber Line. ADSL uses standard phone lines to provide high speed data communications. ADSL upstream speeds (from the user) normally top out at 128Kbps and downstream (to the user) at no more than 1.5Mbps. A separate phone line iAEIC-Association of Edison Illuminating Companies.www.aeic.orgAeoli
