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1、BRITISH STANDARD BS 3618-7: 1973 Glossary of Mining terms Section 7: Electrical engineering and lighting UDC 001.4:622 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 03:08:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3618-7:1973 This British Standard, having been approved by the Mining a
2、nd Quarrying Requisites Industry Standards Committee, was published under the authority of the Executive Board on 8 October 1973 BSI 12-1999 First published July 1965 First revision October 1973 The following BSI references relate to the work on this standard: Committee reference MQE/17 Draft for ap
3、proval 71/41860 ISBN 0 580 07457 9 Co-operating organizations The Mining and Quarrying Requisites Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government department and scientific and industrial organizations
4、: Association of Mining Electrical and Mechanical Engineers* British Electrical and Allied Manufacturers Association British Steel Industry Council of Underground Machinery Manufacturers Department of Trade and Industry* Engineering Equipment Users Association Federation of Manufacturers of Construc
5、tion Equipment and Cranes Institute of Quarrying Institution of Mechanical Engineers Institution of Mining Engineers* Mechanical Handling Engineers Association National Coal Board* The Government department and industrial organizations marked with an asterisk in the above list, together with the fol
6、lowing, were directly represented on the committee entrusted with the preparation of this British Standard: Institution of Mining and Metallurgy University of Birmingham University of London University of Nottingham Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: she
7、ffieldun sheffieldun, na, Wed Nov 29 03:08:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3618-7:1973 BSI 12-1999i Contents Page Co-operating organizationsInside front cover Forewordii 7.1Electrical engineering1 7.2Lighting4 Publication referred toInside back cover Licensed Copy: sheffieldun sheff
8、ieldun, na, Wed Nov 29 03:08:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3618-7:1973 ii BSI 12-1999 Foreword This glossary has been prepared, under the authority of the Mining and Quarrying Requisites Industry Standards Committee, in order to standardize and to co-ordinate the technical terms i
9、n current use in mining in the United Kingdom. Although the majority of the terms defined in the original edition of this glossary were primarily concerned with coal mining, account has been taken of terms used in other forms of mining and of quarrying. The need for this glossary arose from the wide
10、ly varying interpretation of terms used within the industry, and the prevalent use of more than one synonym, some purely local in origin, to indicate specific meanings. The glossary has been issued in a number of sections, according to subject matter, as follows: Section 1: Planning and surveying; S
11、ection 2: Ventilation; Section 3: Boring and exploration; Section 4: Drainage; Section 5: Geology; Section 6: Drilling and blasting; Section 7: Electrical engineering and lighting; Section 8: Winning and working; Section 9: Shafts and associated equipment; Section 10: Transport; Section 11: Strata c
12、ontrol. In the normal process of periodical review of the BS 3618 publications it was seen that a number of modifications were desirable to Section 7, “Electrical engineering and lighting”; therefore, since the initial edition was dated 1965, it was decided to publish a revision incorporating these
13、changes. In compiling the glossary account has been taken of the fact that terms primarily associated with coal are separately defined in BS 3323, “Glossary of coal terms”, and terms relating to coal preparation are defined in BS 3552, “Glossary of terms used in coal preparation”. The following fact
14、ors also have applied in the statement, selection and definition of terms: 1) Where two or more terms are grouped together, the term which is favoured is printed first and in heavy type. It is hoped that such preferred terms will gradually displace the non-preferred terms. The non-preferred terms of
15、 a group are printed in smaller type. Where the use of any term is considered to be undesirable it is marked deprecated. 2) Generally, only terms which have a specific meaning in this field have been included. Where a technical term has an accepted meaning in other fields of engineering it has been
16、omitted; the few exceptions are terms which are of particular importance in mining. 3) Purely local terms are not defined, but those of sufficient importance are included as non-preferred terms. 4) Obsolete terms are excluded. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 03:08:56 GMT+00:00
17、 2006, Uncontrolled Copy, (c) BSI BS 3618-7:1973 BSI 12-1999iii A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity f
18、rom legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendm
19、ent table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 03:08:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 03:08:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3618-7:1973 BSI 12-19991 7.1 Electric
20、al engineering TermDefinition approved apparatusApparatus, not necessarily flameproof or intrinsically safe, which has been approved under Government authority for use in mines and quarries. automatic controlControl by means of any device other than a manually operated switch or push-button. backing
21、-out switchA switch applied to winders and man-riding haulages which allows the control circuit to be energized, in order to move the conveyance out of an overwind, provided that the winder control lever or other operating mechanism is moved in the appropriate direction. (See also overwind switch.)
22、belt protection deviceA device fitted to a belt conveyor to give an alarm or to cause the conveyor to stop in the event of a defect such as belt slip, breakage, tearing, misalignment, overload, or overheating. belt slip deviceA device fitted to a belt conveyor to give an alarm or to cause the convey
23、or to stop in the event of belt slip exceeding a predetermined amount. bolted cable couplerTwo cable coupling units with connecting pins, bolted together to form a straight through connecting box. bolted cable plug and socket A plug and a socket designed to be held together by one or more bolts or s
24、crews, or studs and nuts, in such a way that they cannot be disengaged without the use of a tool. cable coupler adaptor flit plug adaptor An adaptor used to connect a cable coupling unit to apparatus. It may either be separate from or be integral with the enclosure of the apparatus to which the cabl
25、e coupling unit is to be connected. cable coupling unit flit plug A detachable cable sealing box utilizing contact tubes and pins to facilitate ready connection to, or disconnection from, a similar unit or other apparatus. cable sealing boxA closed box to which a cable can be attached by means of a
26、gland and which is designed to be filled with insulating compound to protect the insulation of the cable from air or moisture. cancelling device (shaft signals) A device, operated by movement of a rope drum or sheave, which cancels signals shown on the shaft signal indicator and enables fresh signal
27、s to be received. certified apparatusApparatus which has been certified under Government authority as complying with the requirements for flameproof enclosure or for intrinsic safety. core balance (earth fault) protection A system of protection applied to circuits in an a.c. system having its neutra
28、l point earthed and utilizing a core balance transformer to detect the earth leakage current. (See also earth fault protection.) core balance transformerA form of current transformer, the primary windings of which are connected in each phase (and neutral if any) of a circuit. The flux resulting from
29、 an out-of balance current in the primary windings induces a voltage in a secondary winding. detachable cable sealing box A cable sealing box which can be disconnected and detached from associated apparatus without disturbing the sealing of the cable. earth fault latchoutA feature of an earth fault
30、protective system which requires the earth fault relay to be manually reset. earth fault lockout systemA system whereby a circuit is monitored to prevent application or restoration of supply if an earth fault exists. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 03:08:56 GMT+00:00 2006, Unc
31、ontrolled Copy, (c) BSI BS 3618-7:1973 2 BSI 12-1999 TermDefinition earth fault protection earth leakage protection, deprecated A system of protection designed to cause the supply to a circuit or system to be interrupted when the leakage current to earth exceeds a predetermined value. earth leakage
32、protectionSee earth fault protection. flameproof enclosureAn enclosure for electrical apparatus that will withstand an internal explosion of the flammable gas or vapour which may enter it, without suffering damage and without communicating the internal flammation to the external flammable gas or vap
33、our for which it is designed, through any joints or structural openings in the enclosure. (See also certified apparatus.) flexible cableSee trailing cable. flexible cable couplerSee trailing cable coupler. flit plugSee cable coupling unit. flit plug adaptorSee cable coupler adaptor. gate-end box gat
34、e-end switch, deprecated gate-end unit A flameproof enclosure containing electrical apparatus, such as control gear, switchgear or protective gear, designed primarily for use underground. (See also gate-end section switch.) gate-end section switchA form of gate-end box incorporating a circuit-breake
35、r to control and/or isolate part of an electrical system. gate-end switchSee gate-end box. gate-end unitSee gate-end box. gate interlockA system designed to prevent shaft conveyances from being moved, or action signals being transmitted, unless all shaft gates are closed. incendive sparkingSparking
36、capable of causing an ignition. inset tee boxA junction box designed to be mounted in an inset to enable a connection to be taken from a shaft cable. intrinsically safe apparatusApparatus that is so constructed that, when it is installed and operated under the conditions specified by the certifying
37、authority, any electrical sparking that may occur in normal working, either in the apparatus or in the circuit associated therewith, is incapable of causing an ignition of the prescribed flammable gas or vapour. (See also certified apparatus.) intrinsically safe circuitA circuit in which any electri
38、cal sparking that may occur in normal working under the conditions specified by the certifying authority, and with the prescribed components, is incapable of causing an ignition of the prescribed flammable gas or vapour. kep interlockA system designed to prevent a shaft conveyance being lowered befo
39、re all keps are fully withdrawn. kep switchA switch associated with kep interlocks or warning devices. local controlControl of a circuit breaker, starter, or similar apparatus by means of a manually operated external switch or push-button integral with the apparatus. overwind switchA switch which ma
40、y be used on winders, or haulages, to cause the power to be cut off from the driving motor, or engine, and the brakes to be applied in the event of the conveyance passing its normal limit of travel. Such a switch may be: 1) situated in the headgear and operated by the conveyance; 2) mounted on the a
41、utomatic contrivance; or 3) operated by the depth or distance indicator. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 03:08:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3618-7:1973 BSI 12-19993 TermDefinition pilot core protectionA feature of a remote control circuit which opens the co
42、ntrol relay, and prevents it from closing, in the event of an open-circuit or a short-circuit on the control cores of the system. pilot switchSee remote control switch. pliable armoured cableA flexible cable having collective armour comprising stranded groups of galvanized steel wires. pommelA restr
43、ained cable plug (q.v.). portable apparatusApparatus designed to be moved while it is working. portable substationSee transportable substation. remote controlControl, from a distance, of a circuit breaker, starter, or similar apparatus. remote control switch pilot switch A switch operating in a low
44、voltage control circuit to open or close a contactor or other switch in a main circuit. restrained cable plug and socket A plug and socket designed to be held together by an operating bolt, or screwed union ring, or other equivalent device, the use of which enables the plug to be readily inserted or
45、 withdrawn. A flameproof restrained plug and socket incorporates an interlock to ensure that the power connections are dead when they are separated or until they make contact; the design is such that the enclosure is flameproof at all times when there is contact between the pins and tubes. (See also
46、 BS 4673.) restricted earth fault protection As used in mining, a system of earth fault protection in which the fault current is limited, without requiring the use of sensitive earth fault protection. screened trailing cableA flexible cable provided with a protective screen or screens incorporating
47、tinned copper wire, or other conducting material, applied a) to enclose each power core separately (individual screening), or b) to enclose all the cores of the cable (collective screening). sensitive earth fault protection A system of earth fault protection in which the fault current is limited by
48、design to a low value which may require amplification in order to operate an earth fault relay. In the case of 3-phase a.c. systems, the limitation of the leakage current may be effected by either: 1) inserting a current limiting device between the neutral point of the system and earth (single-point
49、 earthing); or 2) connecting, in each circuit to be protected, all phases, in star, through current limiting devices, each star point being connected to earth through an earth leakage protective device (multi-point earthing). sequence controlA method of control whereby, once action has been initiated, a number of electrical circuits will automatically function in a prescribed order. sequence interlockAn interlock provided between a number of electrical circuits, which are required to function in a prescribed order, and which prevents a circuit from bein