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switchboard    音标拼音: [sw'ɪtʃb,ɔrd]
n. 配电盘,接线总机

配电盘,接线总机

switchboard
开关板 交换机

switchboard
n 1: telephone central where circuits are completed with
patchcords [synonym: {switchboard}, {patchboard}, {plugboard}]

switchboard \switch"board`\ n.
1. an elctrical apparatus consisting predominantly of a panel
on which are switches or other means of completing
electrical circuits; -- used especially for the devices
used in telephone exchanges. See sense 2.
[PJC]

2. (Telephone) An apparatus containing switches by means of
which a connection may be made from an incoming telephone
line to any one of numerous outgoing lines. The switches
may be either mechanical or electronic, and the switching
action may be automatic, controlled by signals in the
incoming call, or manual, controlled by a switchboard
operator. In older style manual switchboards, the circuits
were connected by the use of patchcords, inserted into
plugs.

Syn: patchboard, plugboard, telephone exchange.
[PJC]


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  • What is a switchboard and what is it used for? - AutomationForum
    Definition The National Electrical Code® (NEC®) defines a switchboard as a large single panel, frame, or assembly of panels on which are mounted, on the face, back, or both, switches, over current and other protection devices, buses, and usually instruments Theory Switchboards enclose various devices For example, the following illustration shows two switchboard sections, an […]
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    I just watched a webinar regarding NFPA 110, NEC 700-702, 708, and 517 as it relates to emergency and standby systems A question came up in the Q A portion that relates to NEC 700 10(B)(5) (2011 version) which states the following: "Wiring from emergency source to supply and combination of
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    Hope everyone is doing well, I wanted to get a second pair of eyes on an electrical room that I'm laying out that has a 4000 amp switchboard (MSB) I just want to verify that this electrical room isn't causing any violations and that I'm not missing anything required from NEC 110 26 For
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    I am currently working on a project where we are replacing a 480V 1200A distribution switchboard filled with fused switches (installed in the 80s) with a 1200A distribution panelboard with circuit breakers The panelboard is serving mechanical loads which were also installed in the 80s This





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