electrical B.txt

  1. Balanced Load
    �-�Refers to an equal loading of the phases in a polyhphase system (current and phase angle).
  2. Balanced polyphase system
    �-�A polyphase system in which both the currents and voltages are symmetrical.
  3. Ballast
    �-�A device that by means of inductance, capacitance, or resistance, singly or in combination, limits the lamp current of a fluorescent or high intensity discharge lamp. It provides the necessary circuit conditions (voltage, current and wave form) for start
  4. Bandwidth
    �-�The data carrying capacity of a transmission path, measured in bits or bytes per second.
  5. Bank
    �-�A group of electrical devices, usually transformers or capacitors, connected in a way to increase capacity.
  6. Basic impulse level (BIL)
    �-�A reference impulse (voltage) insulation strength expressed in terms of the peak value of the withstand voltage of a standard impulse voltage wave. It is used to express the ability of electrical equipment such as transformers to withstand certain levels
  7. Basic Insulation Level
    �-�A design voltage level for electrical apparatus that refers to a short duration (1.2 x 50 microsecond) crest voltage and is used to measure the ability of an insulation system to withstand high surge voltage.
  8. Battery
    �-�A combination of two or more chemical cells connected together electronically to produce electrical energy.
  9. Battery Tray
    �-�A contained with a base and walls for holding several cells or batteries.
  10. Bay-O-Net�
    -�A fusing device frequently used to protect transformers and downstream devices. A Bay-O-Net fuse may include a Partial Range Current Limiting Fuse in series with n under oil fuse link.
  11. Beacon
    �-�In wireless networking, a beacon is a packet sent by a connected device to inform other devices of its presence and readiness.
  12. Beam Spread
    �-�With regard to outdoor light, the angle between the two directions in a plane in which the intensity is equal to a stated percentage of the maximum beam intensity. The percentage is typically 10% for floodlights and 50% for roadway luminaries.
  13. Belt
    �-�Refers to a lineman's climbing belt.
  14. Bias Current�
    -�The current used as a bias quantity in a biased relay.
  15. Biased Relay�
    -�A relay in which the characteristics are modified by the introduction of some quantity, and which is usually in opposition to the actuating quantity.
  16. Bikeway (Lighting)
    �-�Any road, street, path or way that is specifically designated as being open to bicycle travel, regardless of whether such facilities are designed for the exclusive use of bicycles.
  17. BIL�
    -�1) See Basic Insulation Level. 2) See Basic Impulse Level.
  18. Blackout
    �-�The complete interrupting of load to an electric utility customer or group of customers to reduce overall load on the system.
  19. Blowing
    �-�The act of installing fiber optic cable into a duct using air pressure.
  20. Bluetooth
    �-�A wireless computing and telecommunications specification that defines how mobile personal computing devices work with each other and with regular computers and phone systems within a close range.
  21. Bonding
    �-�The permanent joining of metallic parts to form an electrically conductive path that will ensure electrical continuity and the capacity to conduct any current to be present in a safe manner.
  22. Boomer
    �-�A lineman that moves from job to job.
  23. Boost Charge
    �-�A charge applied to a battery which is already near a state of full charge, usually of short duration.
  24. Booster Transformer�
    -�A current transformer whose primary winding is in series with the catenary and secondary winding in the return conductor of a classically-fed A.C. overhead electrified railway.
  25. Brownout�
    -�Refers to a reduction of voltage on the system. This effectively dims the lights. Systems in the eastern parts of the U.S. where networks are integrated use brownouts as a means of conserving energy.
  26. Buck
    �-�The act of lowering the voltage.
  27. Bucket
    �-�A basket or platform that supports one or more linemen attached to a boom of a truck.
  28. Bucket Truck
    �-�An aerial lift truck used to lift men high enough to work on overhead lines
  29. Building Wire
    �-�Conductors and cables used in commercial building construction.
  30. Bulb�
    -�The outer enclosure of a light source; usually glass or quartz.
  31. Bulb Envelope Lighting)
    �-�The outer enclosure of a light source; usually glass or quartz.
  32. Bull Line
    �-�Heavy line used to pull wire or cable into a conduit or into an overhead configuration.
  33. Bull Wheel
    -�A reel device used to hold tension during the wire installation process.
  34. Bunched Stranding
    -�A term applied to a number of wires twisted together in one direction in one operation without regard to their geometric arrangement.
  35. Bundle
    �-�Multiple cables used to form one phase of an overhead circuit.
  36. BURD
    �-�Buried Urban Residential Distribution.
  37. Burden
    �-�Load imposed by an electronic or electrical device on the measured input circuit, expressed in volt-amps.
  38. Buried Urban Residential Distribution
    �-�Refers to the system of electric utility equipment installed below grade
  39. Bus�
    -�A conductor, which may be a solid bar or pipe, normally made of aluminum or copper, used to connect one or more circuits to a common interface. An example would be the bus used to connect a substation transformer to the outgoing circuits.
  40. Bushing
    -�An insulator having a conductor through it, used to connect equipment to a power source.
Card Set
electrical B.txt
electrical terms B