<#webadvjs#>

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ABC?±???o?????oè??è|??±? ??±?????o???ABC?3????è§?è?? ?23??????ABC?±???o???è|??±? ??±?????o?????oè??è|??±? ??±????·??¨???o?????????è|??±?

 

ABC?o§??°?????-?????o?????oè??è|??±?

 

 

??-????oo?°???±???????????????????1???oè??é?¨??????

???161??·
??3?o??????????????????????????-????????3??????o???è??è??è§?è????????????????°??1??????????-????????3??????o???è??è??è§?è???????o????????????????????·??o GB50174-2008, è?a 2009 ?1' 6 ??? 1 ????????????????????-?????? 6.3.2????? 6.3.3????? 8.3.4?????13.2.1????? 13.3.1???????o??o?????§????????????é??????????§è???????????????-?è???????o??o???è??è??è§?è????? GB 50174-93 ???????o??-???????è§?è????±???é?¨?????????é???????????????????-???è???????o????¤???o??????è?????
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Code for design of electronic information System Room

??-????oo?°???±??????????????????GB50174 –??2008
2008–11–12 ??????·2009–6–01 ??????
??-????oo?°???±???????????????????1???oè??é?¨
??-????oo?°???±????????????è'¨é???????????éa????????±?
è???????????

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???è§?è???????1?????oè??é?¨?????3?o???°??? “ 2005 ?1'?·??¨???oè????????è§?è?????è????????è??è????????????o???1??? ” ???é?????????????o?????? [2005]124 ??·??????è|??±??????±??-???????-??·??¨?è?? è??é?????????????3????????1??????????????????????-?è???????o??o???è??è??è§?è????? GB 50174-93 è??è?? ???è???????o?????????????????????è§?è????±??? 13 ???????????aé???????????è|??????1??????????????????è?-?????o???????o§?????§è??è|??±??????o????????????è???¤????????????????è|??±??????o?-???????????????o?°?è°?è?????????°?????????? ?±?è???????o???????o??????o????????§????????¨é?2è?????????°'????°'??????é?2???
???è§?è?????è????????è|??????1?????? 1. ??1??????è???????1????-????????3??????o??????è|??±????è§??¨??·????è???¤§?????°?????????è§?è???°?????-????????3??????o????????o A ??? B ??? C ????o§?????????è?3?????????è??è??è|??±???? 2. ??????è§?è?????????o????è?-?????o???????o§?????§è??è|??±???????????±?è???????o???????o? ?????o????????§????????¨é?2è???-????è????????è§?è?????é??????-??????????????????o??o?????§????????????é??????????§è????????è§?è????±?????????????1???oè??é?¨è'?è'????????????1??o?????§?????????è§?é???????±?·?????????? ??????é?¨è'?è'??????????????????±??-???????-??·??¨?è??è??é??è'?è'???·??????????????1???è§?é????????è§?è????¨??§è??è???¨???-???è?·????????????????·??¨????è·????è?¤????????????éa?????|??????°é??è|??????1???è????? ?1??¤????è?·?°????è§??????oè?????è?3??-???????-??·??¨?è??è??é?????????-????????3??????o???è??è??è§?è????? ??????????????°??????????o??????·?·???o??????è·? 27 ??·???é?????????????? 100840 ???????????? 010-6821 7842 ???E-mail:ceedi@ceedi.com.cn ??????????????????è????????è?????


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1 ?????? 3
2 ???è?- 3
3 ??o???????o§?????§è??è|??±? 5
3.1 ??o???????o§ 5
3.2 ??§è??è|??±? 6
4 ??o????????????è???¤??????? 6
4.1 ????-????????3??????o?????????é????? 6
4.2 ????-????????3??????o????????? 6
4.3 è???¤??????? 7
5 ??????è|??±? 7
5.1 ????o|????????1?1??o|?????o?°?????°?????o| 8
5.2 ??a??°??????????????°????????¨???é????? 8
6 ??o?-?????????? 8
6.1 ???è??è§???? 8
6.2 ?oo?????????????????o?????? 9
6.3 é?2???????????? 9
6.4 ??¤???è????? 9
7 ??o?°?è°?è?? 10
7.1 ???è??è§???? 10
7.2 è'?è?·è????? 10
7.3 ?°?????????? 11
7.4 ?3????è??è?? 11
7.5 è???¤?é????? 12
8 ????°??????? 13
8.1 ???é????? 13
8.2 ??§??? 14
8.3 é?????é?2??¤ 15
8.4 ?????° 15
9 ???????±?è?? 16
9.1 ???è??è§???? 16
9.2 ???????????? 17
9.3 ?±?è????? 17
10 ??o???????o? 17
11 ??o????????§????????¨é?2è?? 18
11.1 ???è??è§???? 18
11.2 ?????????è???¤??????§?3???? 19
11.3 ?????¨é?2è???3???? 19
12 ????°'????°' 19
12.1 ???è??è§???? 19
12.2 ???é????·è?? 20
13 ???é?2 20
13.1 ???è??è§???? 20
13.2 ???é?2è????? 20
13.3 ?????¨??a??? 21


 

1 ??? ???
1.0.1????oè§?è??????-????????3??????o???è??è???????????????-????????3????è???¤??????¨????¨3????????? é????°è??è??????????°?????????è?????????????????????????¨é????¨???è??è??????????????è?????è§?è?????
1.0.2?????è§?è??é????¨?o???o?-???-??°??o?????1??o????????o???????-????????3??????o??????è??è?????
1.0.3??????-????????3??????o??????è??è???o?é????aè???????oè??è§??¨????è?????????±?è§???????è°????è?'????????????
1.0.4??????-????????3??????o???è??è??é?¤?o???|??????è§?è???¤?????°??o???|???????????°è???????3?????????è§?è?????è§???????

2 ??? è?-
2.0.1??????-????????3???? electronic information system??±è???????o???é?????è???¤?????¤????è???¤??????§???è???¤????????????3???é?????è????????????????? ??§??????????o???¨?????????è§?????????1??????è??è??é??é?????????·?????-???¨??????è?????????'??-??¤??????? ?oo??o?3???????
2.0.2??????-????????3??????o??? electronic information system room???è|???o????-???????è???¤???????è??è?????????????o???????????????????1???o?-?????????o?-??????? ???é?¨?????????????????o??????è???????o???????????o???è?????????????o?-????
2.0.3???????o??? computer room???è|???¨?o?????-????????¤????????-???¨????o¤?????????è??è???¤???????è?????è??è???????o?-???oé?'?????????????????¨??o??????????????o???????-???¨??o????-????è????o??????
2.0.4??è???????o auxiliary room??¨?o?????-???????è???¤????è???????????è?????è°?è???????'??¤???è??è???????§??????????????o?????? ??????è???o?é?'??????è????o???????????§??-???????¤?????o?????????°??¤?????'?????¤?-???o??????
2.0.5??????????o support area???????1????é???????????????¤????è???¨???????è|?????????????????????o???????????????é???????¤??? ??'?21????????o?????? UPS ??¤???????±???¤?????oè°???o????????¨???????????????é?2è???????¨?????????é?2??? ???é?2??§?????¤?-????
2.0.6??è?????????????o administrative area??¨?o???????è???????????????????·??1??????è???¤?è??è?????????????o?????????????·?????oo???????????¤???é?¨???????????-??¤???????'???¤?????'è??é?'?????¨??·?·??????¤?-????
2.0.7????o??°è????? infrastructure????-????????3??????o???????????o????-????????3??????????è??è?????é?????è????????
2.0.8?????????12??°??? EMI ??? electromagnetic interference???è???°???????????????????è??é????1è???¤?????????·???è??é???????????è????±??????
2.0.9?????????±?è?? electromagnetic shielding??¨????????????????°??o¤???????????o???????????o?????????é?????
2.0.10 ???????±?è????¤ electromagnetic shielding enclosure???é?¨??¨è?-è?°??????é???|????è?a???é?¨????¤?é?¨?????o????????oè??é???????o?-???oé?'??????
2.0.11 ??a?-??3????é??é???a? cut-off waveguide vent??a?-??3???????é??é?????????????o?????????è????????è??è???????????è????o?°????é????????è???¤?è?° ?????????é?????è????'?????????????3????
2.0.12 ???????????????????±?è????¤ modular electromagnetic shieldingenclosure?????§è??è??è|??±??????±é?????????·???????????±?è????3????¨???????????????????????±?è??é?¨????-???????è??????·???°??oè??é??????????o?????·????????????????????????????±?è????¤???
2.0.13 ????????????????±?è????¤ welded electromagnetic shielding enclosure????????????é????¨??°??o????????1?????oé???????·?????o???????????????????±?è????¤???
2.0.14 ?????? Redundancy?????????é???¤?é??????3???????????o?é?¨????????¨é?¨é?¨??????????3?????????????é??????????????é???????? é?¨??????????1??????????é??é?¨???????·?????????±?-¤????°??3??????????é?????é?'???
2.0.15 N- ??o???é???±? Base requirement?3???????è?3??o???é???±?????2?????????????
2.0.16 N+X ?????? N+X redundancy?3???????è?3??o???é???±??¤???????????o? X ??a????????? X ??a?¨??????? X ??aè·??????? X ??a?3????????????? X??a??????????¨???????è·??????????é???????'??¤?????????è?'?3????è??è????-??-?????? X=1 ??? N)
2.0.17 ??1é?? fault tolerant??1é???3?????????·?????¤????????¤???????????????é?????????3?????????¨???????????????è?3?°??????¤????3? ?????¨?·????????????1é???3????é??????????o??°è???¤????è?3?°?è????????????????????é??????a????è???¤????é?? ????oo??o???????¤±è???o????è???????±????3???????è??è?????
2.0.18 ????¤'??? Array Cabinet??o???è?????????????o???????????????????o????????o?é???o?????????????è???????????è???¤???????è??????o? ????????o??????????¤'???
2.0.19 ????????oè?????????3???? real — time intelligent patch cord managementsystemé????¨è???????o?????????????-?é???o?è???¤???1??o???????o???-?????????è???o?è??è??????????????????3???????
2.0.20 ????????1??? TO ??? telecommunications outlet????±???????????????????????????????????o§?¨???????
2.0.21 é???????1??? CP ??? consolidation poluté???o?è???¤?????·??????o????????1?1?é?'????o?è·???±??-???è???????1???
2.0.22 ?°'?13é???o?è???¤???? HD ??? horizontal distributor???????°'?13??????????°'?13???????????????????o??-??3????????o????é???o?è???¤????
2.0.23 CP é??è·? cp linké???o?è???¤???? CP ?1?é?'??????????????????è???????¨?????¨???????°??1???§???é??è·????
2.0.24 ?°??1?é??è·? permanent link????????1???é???o?è???¤??1?é?'??????è???o?è·?????????????????·??????o????o????è?????é???o?è???¤????è?? ?¤?????o????è·3?o????????????????????????a CP é??è·????
2.0.25 é??????????? static state condition?????o????????oè°??3?????¤??o??-????è??è???????????????-???????è???¤???a???è???????¤????2?????oo?????? ?????????
2.0.26 ?????o?????? stop condition?????o????????oè°??3??????????é?'??-??????????o??3?????¤??o??-????è??è???????????????-???????è???¤??¤? ?o?????·????????????????
2.0.27 é??????3???? electrostatic leakage??|????????????é????????è?·é??è????|?????????é?¨??????è?¨é???-?é????????é?¨????????¨é?¨????¤±?????°è±????
2.0.28 ????§????é?? volume resistance??¨???????????1?????¤??aè?¨é????????????????¤??a??????é?'????????'???????????????è????¤??a??????é?'????¨3??????????1???????
2.0.29 ?????¤??§?????° protective earthing????????¤?ooèo????è???¤??????¨??o??????????????°???
2.0.30 ???è????§?????° functional earthing??¨?o????è??è???¤?????3????????-????è??è??????-??????°?????°è???¤?????3??????????è??????????°???
2.0.31 ?????°?o? earthing conductor????????°????-?????????°?±?é?????è?3?????°??????è??????????????
2.0.32 ?-???????è???????| bonding bar?°??-???????è??????????????è???¤????é???±??¤??§????é???±????é?????é???±??o??§??????o?-????é???±??????? ?-?è??????????????????-???????è????????é???±???|???
2.0.33 ?-???????è??????????? bonding conductor?°??????????è??????????§??????è???????°?????°?±?é?????????-???????è???????|????-???????è?????????????? ????????? 3 ??o???????o§?????§è??è|??±?
3.1 ??o???????o§
3.1.1??????-????????3??????o????o?????????o A ??? B ??? C ????o§???è??è??????o???1?????o???????????¨ ??§è'¨?????????è|??±?????????¨??????????¤??????-???é??è|???§??????????±??o§??????
3.1.2 ??|????????????????1???? ???????-????????3??????o????o???o A ?o§
1 ????-????????3????è??è????-??-?°?é?????é???¤§?????????????¤±???
2 ????-????????3????è??è????-??-?°?é??????????±??o????§??o????é???··?1±???
3.1.3????|????????????????1???????????-????????3??????o????o???o B ?o§???
1 ????-????????3????è??è????-??-?°?é?????è???¤§?????????????¤±???
2 ????-????????3????è??è????-??-?°?é??????????±??o????§??o??··?1±???
3.1.4 ????±??o? A ?o§??? B ?o§???????-????????3??????o?????o C ?o§???
3.1.5????¨?????°??o???????¤??????o??????è??è??????o????????????o????-??o§?????????
3.0.6 ????????a??o???????????????é?¨???????????1??????é??é???±?????????§???????????????è??è??è??è?????
3.2 ??§è??è|??±?
3.2.1??A ?o§????-????????3??????o???????????o??°è??????o??????1é???3????é??????????¨????-????????3????è??è?????é?'?????o??°è?????????o???????????¤±è?????è???¤????é??????¤?????o???-??-?????'??¤????????? è?????è?'????-????????3????è??è????-??-???
3.2.2??B ?o§????-????????3??????o???????????o??°è??????o??????????è|??±?é??????????¨?3????è??è?????é?'?????o??°è???????¨??????è?????è????'??????????o????è???¤????é??è?????è?'????-????????3????è??è????- ??- ???
3.2.3??C ?o§????-????????3??????o???????????o??°è??????o??????o???é???±?é??????????¨??o??°è??????-????è??è???????????????o????è??????-????????3????è??è???????-??-???

4 ??o????????????è???¤???????
4.1 ????-????????3??????o?????????é?????
4.1.1??????-????????3??????o?????????é??????o???|?????????è|??±????
1 ?????????????o??¨3??????é??????o¤é??é??????o??????·???è?a??????????o?????'????
2 ?o?è???|??o§????2??°?????21???????????3?°??????????????o§???è'??-???·???è??è????§???????????? ?????????????????o??????
3 è???|??°'?????????é???????o??????
4 è???|???o????o??????o??a??°?o????
5 é???????o????????o?12??°???
4.1.2????1?o??¤??±????é???±???o?-??????????????-????????3??????o????????¨???????????o???????????????????o???1è???¤?è??è?????????o???·è?????é?·???????o??????????è?·è???-?é??é??è??è????????è??è?????????????? è?? ???é????¨??o????????¨??oè°?????????o???????o???·?¤????è????¤?¤???o?????o?-??????????
4.2 ????-????????3??????o?????????
4.2.1??????-????????3??????o?????????????o???1????3????è??è????1??1???è???¤???·???è|??±????????????? è???????±?????o??????è???????o???????????o???è?????????????o?-????è????o?????????
4.2.2???????o???????????¨é???§??o???1???????-???????è???¤??????°é??????¤?????°o??????????????1?????????????1?é?????????????????????±?é??è|?????????¨é???§??????¨????-???????è???¤??¤?????°o???????????¨??? ???????????????????????o???????????¨é???§???????????????1?3??????????
1 ???????-???????è???¤??·2??????è§??????????????????????è????????
A = K ∑ S (4.2.3????? 1)
A ― ????-????????3?????????o????????¨é???§?????????? ;
K ― ?3???°???????????o 5 ??? 7 ;S ― ????-?è???¤?????????±é???§?????????????

2 ???????-???????è???¤??°???a??????è§??????????????????????è????????
A = KN (4.2.3????? 2)
K ― ?????°è???¤??????¨é???§?????????? 3.5 ??? 5.5( ??? / ??°??? ;
N — è???????o?????o????????????è???¤?????????°??°???
4.2.3??è???????o???é???§??????o?????o???é???§???? 0.2~1 ??????
4.2.4????¨??·?·??????¤??????????oo 3.5 ??? 4 ???è?????????????????è??????oo???????????¤?-?????ooé??????·??????????é?'?????????????oo 5~7 ???è????????
4.3 è???¤???????
4.3.1??????-????????3??????o??????è???¤????????o????è?3??o?????????????oo?????????????????¨???è???¤? ?????????è??è?????è???¤??????-??????è???????'??¤???è|??±????
4.3.2???o§????°????????o???????è???¤??o?è???|???1?°?????????????è???¤?????1????????????¨???é????-??? ????????o?????????
4.3.3???????o????????o?????????è???¤???o???è??é?? / ?????oé????1?????·??'????????o????????o???????????????é????¨é????1é?????è????1è???????1??????
4.3.4???????o?????????è???¤?é?'??????è·??|??o???|?????????è§???????
1 ??¨è?-???è??è???¤????é??é????????????o??°??o? 1.5m ???
2 é????1é?????????????o????????o????-?é???1?é?'???è·??|?????o??°??o? 1.2m ???
3 è????1è?????????????o????????o???è??é???1?é?'???è·??|?????o??°??o? lm ???
4 ???é??è|???¨??o?????§é????'??????è??????????o????????o????????o??????????1?é?'???è·??|?????o? ?°??o? 1.2m ???
5 ???è?????????????o?????????é???o|è??è?? 6m ????????¤????o?è???????o???é??é??????????¤??a??o???é??é???1?é?'???è·??|?è??è?? 15m ????????¨??¤??a??o???é??é???1?é?'è???o?????????o???é??é???????o???é?? é?????????o|????o??°??o? lm ????±?é?¨?????o 0.8m

5 ??????è|??±?
5.1 ????o|????????1?1??o|?????o?°?????°?????o|
5.1.1???????o??????è???????o??????????o|????????1?1??o|?o????è?3????-???????è???¤?????????¨è|??±???? ?????1???è|??±????????o???1???????-????????3??????o???????-??o§????????§é????? A ???è|??±???§è?????
5.1.2??A ?o§??? B ?o§?????o??????????°?????o|?????¨é?????????????????è?????????????o?°???-?¤§?o???? ?-??o? 0.5 μ m ????°??2???°?o??°??o? 18000 ?2????
5.2 ??a??°??????????????°????????¨???é?????
5.2.1??????oo??????????????o??????è???????o?????¨????-???????è???¤??????o????????¨?????????????????? ???é???????a??°????o??°??o? 65dB(A) ???
5.2.2???????o??????????o?????12??°??o??o?????¨é???????o 0.15 ??? 10OOMHz ???????????o??????è???????o??????????o?????12??°??o??o????o??¤§?o? 126dB ???
5.2.3???????o??????è???????o????????o?12??°????????o??o????o??¤§?o? 800A/m ???
5.2.4????¨????-???????è???¤??????o?????????????????o?????°???è?¨é???????'????°'?13???????????¨???é?? ?o|??????????o??¤§?o? 500mm/s 2 ???
5.2.5???????o??????è???????o???????????????é???????????????o??¤§?o? 1KV ???

6 ??o?-??????????
6.1 ???è??è§????
6.1.1????o?-??????????è??è???o???1???????-????????3??????o???????-??o§????????§é????? A ???è|??±???§è?????
6.1.2????o?-??13é???????oé?'????±??o???·???????'???§????1??o????è?3????-????????3??????o???????·?è?o è|??±????
6.1.3???????o??????é???o???1?????o???é???o|???é??é??è|??±????????????????????°??o? 2.6m ???
6.1.4???????????????o????è???????o??????
6.1.5???????o??????è???????o????o?????????¨??¨?°'??o???????????'?????1???????o?????????¨??????????12 ??°?o???oé???????'??¤????????????????o????è?3?????????é????-???é?2??????é?2???????°??o§?°??-?è|??±????
6.1.6??è????????????¤1?±???????????¤1é?????????-????????3??????o????????o?-?è??è???o????è?3é???????? ????o????è???????'??¤è|??±???????????o?é?????è??????±??????????è???????????????o????
6.1.7????1??o????????o???????-????????3??????o????o???1???è?·è??è|??±?é??????????o??a???????1??o???| ?????°è??????????????????··?????????????????oè??è??è§?è????? GB50376 ????????3è§???????
6.2 ?oo?????????????????o??????
6.2.1???????o??????è?????????????o????????????????????????è????¨?????±??¨??o?????????????o?é??????oo ??? ?????????????o¤??????
6.2.2??????oo????????o??????????oo????????o?????????????????????
6.2.3??????-????????3??????o??????é??é?????????o|???é?¨????°o????o????è?3è???¤??????????è??è??è|??±??????o?-??????????è?3?????o????o?è??é??é?????é??é????????????o??°??o? 1.5m ???
6.2.4??????-????????3??????o??????è??é?¨??????????????¤????????-??¤?????'è??é?'?????'è??é?'?????¨é?? ?§??o? ???????¤§??-?oo??°???????oo 1 ??? 3 ???è?? ??????
6.3 é?2????????????
6.3.1??????-????????3??????o????????o?-?é?2???è??è?????é?¤?o???|??????è§?è???¤?????°??o???|?????°è???????????????????o?-?è??è??é?2???è§?è???????? GB50016 ???????????3è§???????
6.3.2??????-????????3??????o??????è??????-??o§????o?????o??o??o§???
6.3.3????? A ?o§??? B ?o§????-????????3??????o???????o?????????o?-???????????????¨?????o????????? ???é?¨????1?é?'?o?è?????è????????é?????????o? 2h ???é????????é???????????é?¨?o?é????¨??2?o§é?2???é?¨???
6.3.4??é???§??¤§?o? 100 ??? ????????o???????????¨??o????o?????°??o???¤??a???????o????????????????é???§?????¤§?o? 100 ???????????o?????????è??????????a?????¨??o???????1????é??è?????????????'???é?'???é?¨è??è???????????é?¨?o????????????1????????????????o?è?a??¨??3é?-????1??o????è????¨???????????????é??è???????o????????? ??? ???è?°????????????é?'?o????é??????1??o???????????????????????¤o?????????
6.3.5???????o??????é????????????????????????¤1è??????????????é????-?o???o????????§??? ????????????é????¨?????o?¤?????????????
6.4 ??¤???è?????
6.4.1????¤???è?????è??è??é????¨??????????????§??§è??é?¤??|??????è§?è?????è§?????¤?????°??o???|?????° è???????????????????o?-????é?¨è?????è??è??é?2???è§?è????? GB50222 ????????3è§???????
6.4.2???????o?????????è?????????o?é????¨?°??????§?????????è?·?°???????????'??????|?????????è|??±???? ??¨???????1??o|???????????¨??????????°??????·???è?¨é??é?????è???????§è?????????????????????????¨??o????1? ??§???????????a???è?¨é????1??§?¤???????é??????-??????????????????oé???±????
6.4.3???????o???????????????é??????o????è?3?????¨???è??è|??±????è?¨é???o??13??'???????????????è?·?°????é???????????????1??o?????°???1???é?????
6.4.4???????o?????°é??è??è???o????è?3?????¨???è??è|??±???????é?oè??é?2é???????°??????????'???¨??°??? ???é???o|?o???1?????????????o??????oè°?é??é??è|??±???????????1??o???|?????????è§???????
1 ?'???¨??°????????oé?'??a?????o??????????o??????¨????????°???é???o|???????°??o? 25Omm ????'???¨??°???????????°é???????????è??é?°??????é????¨?°'?3?????????1??°?????°é?????????o??13??'???è????¨???
2 ?|?????????o??????????o????????????o??oè°?é???????±????????°???é???o|???????°??o? 400mm ????'???¨??°???????????°é???????????è??é?°?o?é????¨???è?·?°???????????§???°???????o?????'???????????????? ???????????°é???o?é???????????é?2?????a????????°é??????±????é???-???? ??'??¤?????????é?????é?2???é?2??a??? ???
6.4.5?????????¤1?±?????????????é?????è?¨é???o??13??'???????????????é????¨è??è'¨???é??é?????????????? ?¤1?±??????????è???????????é??é?????????????????
6.4.6??A ?o§ B ?o§????-????????3??????o???????????o?????????è??????¤??a????????????o???è??????¤??a????????o?é????¨????±???o????a?????1??o????è?????????°??????§??????é?'??-????o??3???????????±???¤è????? ?¤??a????????o?é?????é?3?????'?°????
6.4.7??????????o??????è???????¨?°'è???¤????????o?é?????é?2?-??°'????o????????????a??????
6.4.8??é?¨?a?????????????é??????????°?????????é????????é?????????·????é?????????o?é????????é?-??a??????

7 ??o?°?è°?è??
7.1 ???è??è§????
7.1.1???????o??????è???????o??-?????o?°?è°?è???3?????o???1???????-????????3??????o???????-??o§?????? ??§é????? A ???è|??±???§è?????
7.1.2??????????????è????¨?????±??o?o?????????o?-???????????-????????3??????o?????????è?????????????? ??oè°??3???????
7.1.3???????o???????????????é?'?????oè°??????°?????????????????????è???????oè°??3???????
7.1.4??????-????????3??????o????????oè°?è??è?????é?¤?o???|??????è§?è???¤?????°??o???|?????°è???????? ?????????é?????é??é???????o?°?è°?è??è??è??è§?è???????? GB50019 ???????????o?-?è??è??é?2???è§?è????? GB50 016????????3è§???????
7.2 è'?è?·è?????
7.2.1??????-???????è???¤??????????è???¤?????????-é???o?????o§??????????????°???è??è??è????????
7.2.2????o?????oè°??3?????¤??-??????·è'?è?·?o??????????????????1???
1 ??o??????è???¤?????????-???
2 ??o?-???'??¤??????????????-???
3 é??è???¤??a?è?????????¤aé?3è???°???-???
4 ?oo????????-???
5 ??§???è??????????-???
6 ??°é??è'?è?·???
7 ??'é??????§????è???1?è???¨??o§???????????-???
7.2.3????oè°??3?????1?è'?è?·?o??????????????????1???
1 ?oo???????1?
2 ??°é??è'?è?·
7.3 ?°??????????
7.3.1???????o?????oè°??3????????°????????????????????o???1???????-???????è???¤????èo??????·??'??1??????è???¤?????????1????????????????o|???è???¤??????-é??????????¤???é??é?????é?2?°??????a??°?-?è|??±??????? ?????o?-?????????????????????????????-???????è???¤???1?°??????????????????a?????oè|??±????????????o????°? ??????????????????é????????é?????é??????·? 7.3.1??é????¨???
è?¨ 7.3.1 ?????o????°?????????????é????????é?????é??????·?


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7.3.2????1??o???é???o|?¤§?o? 1.8m ???è???¤???-????o|?¤§???è???¤??????-é???¤§????????-è'?è?·?¤§??? ?????o?????????é????¨?'???¨??°??????é??é???????????é????1??????
7.3.4????¨????oo???????????o?????????é??é???°????????????'??1?·?????oo??????
7.4 ?3????è??è??
7.4.1??è|??±??????oè°???????é?'???é????-???????????¤??????????1??o|è|??±????è????????é?'?????????é?? ?????????
7.4.2???????o???é??????????-??¨???è??????o???1???????-????????3??????o???????-??o§????????§é????? A???è|??±???§è??????|?è?????é??????????-??¨????o?è?????????°'?????????è-|è?????????1??o???¨???é???????? ?¤?è???????-é?????????°'????o?è?a??¨?????-????°'?????????è??????o|è°?è??è????????
7.4.3??????-????????3??????o??????é???????????é???????????????????°??????????2???????????o?é????¨é?? ?????§?????????é????? B1 ?o§???????????·è?¨é??é?????é???°???????????¤???????
7.4.4??é????¨?'???¨??°??????é??é?????????'???¨??°???????????oé?'?o?è??è???o??§???????é?2????o??-?????????¨?????oé?'???
7.4.5??é??????????????è??é?2??????????????????????|????é?????è?????????o???¨???è??é?2???????¤?è??é?2???é????????è????????????¤?????o???¨??¤??§è??é?2???é?????é?2???é???o????????????¨???è??è?a??¨???
7.4.6????oè°??3??????aé?3è??è?????è§?è?? 5.2.1????????è§???????????o?é?????é????a??a??????
7.4.7???????o????????'????-????????????o???????????????é?'???è?°???é?'???????·????????°??o? 5Pa ????????¤?¤?é??????·????????°??o? 10Pa ???
7.4.8????oè°??3?????????°é??é???o???????????o?é?1??-???????¤§??????
1 ????·?????oo???è????????????oo 40M 3 /h ???
2 ??'?????¤????-???????é??é??é?????
7.4.9???????o????????oè°??3??????¨??a?????o??????è??????????-?????¤?o§è????¤??¨?????°é???3?????????¨ ??o?°??3?????o?è??????????-?????o?°?è????¤??¨????1????è??????o?é?????è????¤??¨???????o§è????¤è????????è?? ??¨?-??????????
7.4.10??è???????°é???3????????????o????????¨???è????¤????¤???????????·????????????????é?????é???o????????13è?????
7.4.11???????°??¤?-??????1??o?°?é??????o?????±??????????é?'?????1??oè°??3?????o?é?????é?2?-??±???????é???°????è??????????????é?'?????a??????
7.4.12?????????????oè°???o?????¤?????o?????????è????¨é??è???????o???????????¨??oè°???o??????????1????????????¨?????o?????????
7.4.13????oè°?è??è???o???1????????°?°?????????????é?????é????¨??????è??è????a??????
1 ?¤§?????o?????oè°??3???????é????¨??·?°'??o?????oè°??3????
2 ?????1??°??oé????¨?°'??·??·?°'??o????????o??????????-?????????¨??¤?¤???·??'????????o??·?o?????1??o?é??è????-?o¤?????¨??1??oè°???·????°'è??è??é????????
3 ??oè°??3???????é????¨????????·???è?a?????·??'??????????????1??????
7.5 è???¤?é?????
7.5.1????oè°?????????·è???¤????é????¨?o???|???è??è?????é???????????é????¨???è??è??????????????è|??±????
7.5.2????oè°??3???????è???¤??o???1???????-????????3??????o???????-??o§?????o????????o?-??????????è?? ?¤?????????-é???-?è??è??é?????????1???????è§?è??é????? A ???è|??±???§è?????
7.5.3????oè°??3????????¤????è???¤????????????°??oè°??????·è???¤?????????·è??????o??????? 15% ??? 20%??????é?????
7.5.4??é????¨??o????????¨??oè°???o????????oè°???o?????|???é??????????????é????????è???o????è?3??o??? ?????§?3???????è|??±????????¤o?±??????o?±??-?????¤o???
7.5.5????oè°?è???¤??????o?°?è????¤??¨???????1???¨?o?????o?????'??????'??????è???¤????è???o?????????? ?o??????'?????oé?'???

8 ????°???????
8.1 ???é?????
8.1.1??????-????????3??????o?????¨???è'?è?·?-??o§?????????è|??±??o???1?????o???????-??o§????????§??° è????????????????????é??????3????è??è??è§?è???????? GB50052 ?????????è§?è??é????? A ???è§??????§è?????
8.1.2??????-???????è???¤???????????o?è'¨é???o???1???????-????????3??????o???????-??o§????????§???è§? è??é????? A ???è|??±???§è?????
8.1.3?????é??????3?????o???o????-????????3??????????????±???§é??????¤???¨??1é?????
8.1.4????·?¤????????o?è·???????é????¨?????o??1?????·è??????????·?¤????????o?è·?é????¨??·???é???±??¤? ??¤?????????????????¨??????è????o??o?-?????¤??o??°?é???±??¤???¤????????°???
8.1.5??????-????????3??????o????o???±?????¨é?????????????¨????????¨???è·??????????????????¨???é????¨?12???????????¨???
8.1.6??????-????????3??????o???????????????é??????3????????o?é????¨ TN-C ?3???????????-???????è???¤????é??????o????è???¤?è|??±??????????
8.1.7??????-???????è???¤??o???±???é?'??-????o??3????????????????é?'??-????o??3?????o????è?a??¨?????? ??¨???è·?è?????????????????é?'??-????o??3?????????o?????1é??????o??????????é????????é?'??-????o??3??????? ??o?????1é??????????????è????????
E ≥ 1.2P ??? 8.1.7-1 ???
?????- E-- ???é?'??-????o??3?????????o?????1é???????????????¤???????é?'??-????o??3????è???¤???????KW/KVA???
??P — ????-???????è???¤????è?????è'?è?·??? KW/KVA ??????
8.1.8????¨?o?????-????????3??????o???????????¨???è???¤????????-???????è???¤???????é?'??-????o??3?????o???±????????????è·?é????????
8.1.9??????-???????è???¤????é??????o?é????¨?????¨é???????±?????????????????¨é???????±??????????o?é?? è????¨???è???¤????è?????
8.1.10??????-???????è???¤??????¨é???????±????????????é???¤???a????????¤??¨??? SPD ???????o??????§??? ???è-|è?????????1???????è???¨?é?????????????????è????o?????-??§?o???? PE ?o??1?é?'??????????·????è?????è?3è???¤??????¨è|??±??????????é???¤?é???|?????????¨???
8.1.11??????-???????è???¤????????o?è???????1?o??????????è???¤????????o?è???????1????????o???????1??o?????????????è?????
8.1.12??A ?o§????-????????3??????o????o?é?????????¤???'?21????????o?3?????????????????????????é????????????¤?è???¤???'?21????????oè??????????¨é?¨è'?è?·???é??è|????
8.1.13??????¤???'?21????????o?????1é???o??????? UPS ?????o?????1é???????oè°?????????·è???¤??????o?????1é??????o??????§????????3?3???°???????????¨?-?é??è|????è'?è?·??1é?????
8.1.14???1????è??è?????????????o????o???·?¤?è?a??¨????????¨?1???????è?????
8.1.15????'?21????????o??¨??'?o?è?????????????¨??§????????'???????o????????o??????±???é?'??-????o? ?3?????????????
8.1.16?????????????'?21????????o??????????o?é????¨??·??????è·????è?????è?a??¨è??????????3???è?a??¨ è??????????3????????????????o???±???????o?????????????
8.1.17????·è????¨é??è??é??é????oé?'?????????é??????o?è·??o?é????¨é?????é??è??????????????????o??2? ?o??§??????????????±?é?¨????????·è???????????????o??§????é??????o??§??1????????o¤?????·è????????é???????? ????o??§??o???·è????¨é??????o??§?????????1????'???¨??°???????????o??oè°?é???????±?????????????o??§??????? ??? ????????????????o?é????-?°????é??è·????
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8.2 ??§???
8.2.1???????o??????è???????o???è????§????????§?o|??????????????|???è?¨ 8.2.1?????è§?????????§?o|???????????????è???13é????o 0.75m ?°'?13é?????
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8.2.3???????o????????????è|???§???????o??o?é????¨é?????è??è??è?§?????????è?§??????é???????¨???è°??3?é??????o???|?????????????????????????????1é?????è°??3???????????°?é???????????GB17625.1???????????3è§????????????·?o?é????¨?????o??????????????§?????a??????
8.2.4??è???????o???é????¨????????a???????°???????é????????????1?????°????????°??????????
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8.2.5???·??????o?????????è????§????????§??????????o|????o??°??o?0.7???é???·??????o????????????è????§?????§?o|?????????????o??·??????o?????????è????§?????§?o|??????1/3???
8.2.6???????o??????è???????o????o?è??????¤???¨??§???????¤???¨??§????????§?o|???????o?????o????è????§?????§?o|??? 10% ???????oo????????????é?'????¤???¨??§????????§?o|???????o?????o????è????§?????§?o|?????? 50% ????¤???¨??§????????o???è????§?????????é?¨??????
8.2.7??????-????????3??????o????o?è?????é??é??????????§????????????????¤o?????????????????o???é??é??????????§????????§?o|??? ????????§????????§?o|??????????o? 51x ???????????o???é??é??????????§????????§?o|???????o?????o? 51x ???
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8.3.2???????o??????è???????o??-????????¨é?2é???????°?????????é?'????????·è??é?2é???????°é????????é?? ?????§è???o?é??????¨3???????????????è?·?°????
8.3.3???????o??????????·??????°é???????????é????¨é?????è?????????????????é???????§è?????????o???|???8.3.1???è§???????
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8.4 ?????°
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8.4.2???????¤??§?????°??????è????§?????°?????±??¨???????????°è????????????????°???é??????????-????°? ????????????
8.4.3????1???è????§?????°?????1???è|??±?é????????è??????????°?o????????-???????è???¤?????????°?o???? ??????????????°?o???????????????°?o?????????°?o???????è·??????·è?????
8.4.4??????-????????3??????o?????????????-???????è???¤??o?è??è???-???????è?????????1??o???1???????-? ??????è???¤????????12??°???é????????????-????????3??????o???????-??o§???è§??¨???????????-???????è???????1?????????é????¨ S ?????? M ?????? SM ?··?????????
8.4.5??é????¨ M ?????? SM ????-???????è???????1??????????????o????o?è??????-???????è?????????????????????????¨?o?è??????-???????è???????|????1??o?é??è???-???????è????????????°??-???????è???????|?°±è????? ?????°?±??????????????±?é???±????é?????é???±??o??§??????o?-????é???±????????-?è??è??è?????????????°????-? ??????è???¤??????o???????o?é????¨??¤??1??????é???o|????-???????è????????????°±è??????-??????? è???????????è????????
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8.4.7???-???????è???????|????????°?o?????-???????è???????????????????????????°???aé???§??o???|???è?¨8.4.7?????è|??±????
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9.1 ???è??è§????
9.1.1????1?????????????§???????????????1?????????????????????è|??±????????-????????3??????o???????o? è????????????±?è????¤??????????±?è????¤???é??????????????????3?é?2é?2??¤??a?????????????±?è????¤?????§è?? ???????o??????????????????3????????§è?????
9.1.2????1?o???????è|??±?è???????°???è§?è?? 5.2.2????? 5.2.3?????è§????è|??±????????-????????3???? ??o???????o?é?????????????????????±?è????a??????
9.1.3?????????±?è????¤???????????????????????3????±?è??????o???1??????????±?è????¤?????§è???????????è§??¨?é????????
9.1.4??è????????????±?è????¤???????-????????3??????o????????o?-????????o????è?3?±?è??????????1è?·è?? ???è|??±????
9.1.5?????????±?è????¤?????o?-?????????????????1?é?'???é???????'???é??é?????????????????
9.1.6?????????±?è????¤????????°???é????¨??±??¨?????°è??????????????????????°?o?????????? ???
9.2 ????????????
9.2.1????¨?o???????????????????????±?è????¤???????????????????????o????????????????????????????????? ??????????????oè?a???????????'è''??????
9.2.2????o?-?é???§??°??o? 50 ????????????é?????è????????????±?è????¤??????????????????é????¨???????????????
9.2.3???????o?±?è??è?°?????????è|??±??¤§?o? 12OdB ?????o?-?é???§??¤§?o? 50 ???????±?è????¤????????? ?????????é????¨è?a?????????
9.2.4???????o?±?è??è?°?????????è|??±??¤§?o? 60dB ????±?è????¤????????????é????¨??'è''???????±?è???????????é?????é??é??é????????é????????????o|??1????±?è????§è?????????????????
9.2.5???????o?±?è??è?°?????????è|??±??¤§?o? 25dB ????±?è????¤????????????é????¨??'è''???????±?è???????????é?????é???±??????????é???±???????????????°?o???1???è???±?è???????·????3?é???????????
9.3 ?±?è?????
9.3.1???±?è??é?¨?????¤?3???¨?3????????????a?-??3????é??é???a??-??±?è????????è?·??§è??????o?????o???? ????±?è????¤?????§è??è|??±???????è?????????o?????o??????????
9.3.2???±?è??é?¨????????o???è?????????§???¨?????????è?????????????????é????¨???è??????±?è??é?¨?????? ??o??°?????°é??????????????é????¨?§???¨????±?è??é?¨???
9.3.3????????è????????????±?è????¤???????o??o??o?é??è??????o???¤?3???¨è??è???¤???????????o???¤?3???¨ ???è§???????????????1????????°é???o???1??????????±?è????¤???è???¤??????¨??1???????????????
9.3.4????????è????????????±?è????¤????????·?o????????o?é??è???????·??¤?3???¨???è??è?????????±?è???¤???????
9.3.5??è????o???????±?è????¤??????????o????é????¨??????????±?è????°????????????????o???|???é???±???? ??oè?????
9.3.6????a?-??3????é??é???a????????3??????????é????¨?-?è?1??-è§???????é??é???a??????aé???§??o???1??? ??¤???????°??????°è??è??è????????
9.3.7??é??é???±??????????è???±?è?????????o?é????¨?3???????????3????????????aé???°o??????é???o|?o???? è?3???????±?è???????§è??è|??±????
10 ??o???????o?
10.0.1???????o??????è???????o???????????o???è?????????????o?o???1??????è??è|??±??????????è???12?·? ?????o????·??????o???????????1?????°é???o???1?????o??????è?°?????¨??·é???±?è??è??é????????
10.0.2??????????????????????????è?????è'¨?o?é????¨???????????-?±???????????-??o§?????1???????????? ???è?????è'¨?????????é?¨???????-??o§?o??????????è?'????1??o?é????¨??????é????????
10.0.3??????????o???????????o????????o??????è?????????????????è????o????????????????????¨???é???o? ????????o????1?é?'??1?¤?é???o?????¤'??????
10.0.4??A ?o§????-????????3?????????????é????¨????-?é???o?è???¤???1????o??3????è??è??????????oè???????????
10.0.5??????-????????3??????o????-???¨?????????????1???????????o?é????¨?±?è??????o??3????????????? ????o??3???????é???????????????o????é?2??¤??a??????
1 ??????è|??±???aè????°???è§?è????? 5.2.2????? 5.2.3????????è|??±???????
2 ???????????¨??????è|??±???????
3 ???è????o??°???è?????è?3é????????????o??3??????????????3????????o????è???¤????é?'è·?è|??±???????
10.0.6????·è????¨é??è??é??é????oé?'???????o??o???1???????-????????3??????o???????-??o§?????????è§? è??é????? A ???è|??±???§è?????
10.0.7????o???????o??3????????????¨???????????????????o?è?????????o???1???????-????????3??????o??? ????-??o§?????¨???è??????????o????????¨??????é????????????????????é???o?è???¤????????????°é?????????o???? ??·è??è·???±???
10.0.8??????o?é????¨?o??§????????????·è?????????o??§?????????????é???o|???????¤§é?¨ 150mm ????o? ?§????????????????è?????????o??????o?-?è??é?°???????°??????oè°???????é?2?-??????????è°????è?'???
10.0.9??????-????????3??????o????????????????o??3????è??è?????é?¤?o???|??????è§?è???¤?????°??o???| ?????°è???????????????????????????o??3?????·??¨?è??è??è§?è????? GB50311 ???è§???????

11 ??o????????§????????¨é?2è??
11.1 ???è??è§????
11.1.1??????-????????3??????o????o?è????????????????§???è???¤??????§?3????????????¨é?2è???3???????????3???????è??è???o???1?????o???????-??o§????????§????????°è????????????????¨é?2è???·??¨???????è§?è??GB50348 ???????????oè????o?-?è??è??????????? GB/T50314 ?????????è§?è??é????? A ???è|??±???§è?????
11.1.2???????????è???¤??????§?3???????é????¨é?????????????????????????????????3?????o?????o?????±??????'??¤????1??o???·?¤?????¤o???è?°????????§?????????è-|????????????????¤o???è?????
11.1.3???????????è???¤??????§?3????????????¨é?2è???3???????è???????¨????????a?????§??-?????????????3??????????????o??o????é????????é????¨?????????é?'??-????o??3????????o?????????????é????¨é????-???é?'??- ????o??3?????????????????o??????????è·?é????????
11.2 ?????????è???¤??????§?3????
11.2.1???????????è???¤??????§?3?????????|?????????è|??±????
1 ???????????§????????o??????è???????o?????o?°?è'¨é??????o????????????????è?3????-???????è?? ?¤????è??è??è|??±????
2 ?????o??????è???????o?????????è?????????°'??????é?¨????o?è?????????°'???????????????è-|è??????????o???????°'è???¤????è??è?????????o??o3????????§?3???????è??????????o???????°'????o??????????è?? ?????¨????????¨é??é?¨???
11.2.2????o????????¨??oè°??????'?21????????o??????é?'??-????o??3?????-?è???¤?è?aèo??o?é????|?????§ ?3????????????§??????è|??????°????o3???è???¤??????§?3???????é????????è???o????è?3è???¤??????§?3???????è|? ?±? ???
11.2.3??A ?o§??? B ?o§????-????????3??????o??????é????¨ KVM ???????3??????1?????oè??è??é????-??§ ???????????????
11.3 ?????¨é?2è???3????
11.3.1???????¨é?2è???3?????????±è§?é?????é?2?????§?3??????? ?????????è-|?3?????????o????????§????3? ????????????????3?????1?é?'?o???·?¤?è????¨??§??????è?????
11.3.2???'§?????????????????o????????§????3?????o?è??????????3?3???????è????¨??§??? è??è?a??¨é????? ????-?é?????
11.3.3????¤?¤????è??????????¨é?2è???3????è???¤??o?é????????é?2é?·????????¤??a??????????o??o??????? ??·?o??o??±?è???????????é??é?·è???????????????±?è??????o??????°???????????°???é??????o??¤§?o? 10Ω ???

 

12 ????°'????°'
12.1 ???è??è§????
12.1.1??????°'????°'?3?????o???1???????-????????3??????o???????-??o§????????§é????? A ???????????§è?? ???
12.1.2??????-????????3??????o?????????è?????è?a??¨??·?°'??-????3?????????oè°???o???????1???¨??????é?' ?????°é???o?è?????????°'???????°'è????????
12.2 ???é????·è??
12.2.1??????-????????3??????o?????????????°'????°'???é???o?é????????é?2?????????é?2???é?2??a??????
12.2.2?????è???????o??????????°'????°'???é???o??????·???é?????é?2????????¤???????????????é?????è???????o???????????????????¤??o?è?????????????????é????????????1?é?'?o?é?????????°???a??????
12.2.3???????o??????è???????oè???????°??????????o?é????¨?'??????¤?????¨??°??????è?aé?-?????°????????°???????o????è???°'?°?è?????????1??o?é?????é?2?-??°'?°??????????????o???a??????
12.2.4??????-?????????o????????????????°'???é????????????????????????o?é????¨é??????????????

13 ??? é?2
13.1 ???è??è§????
13.1.1??????-????????3??????o????o???1?????o???????-??o§è?????????o??????-????3????????1??o??????§??°è???????????????????o?-?è??è??é?2???è§?è????? GB50016 ??????é???±??°???¨??o?-?è??è??é?2???è§?è????? GB 50045???????°??????-????3????è??è??è§?è????? GB50370 ????????????è§?è??é????? A ???è|??±???§è?????
13.1.2??A ?o§????-????????3??????o???????????o????o?è??????'?????°??????-????3??????? B ?o§????-????????3??????o???????????o???????????? A ?o§??? B ?o§??o?????-??????é???????????é?'??-????o??3?????????? ?±???¤??????è??????'?????°??????-????3????????1????è?????é?????????°'é????-????3???????
13.1.3??C ?o§????-????????3??????o????????????è§?è????? 13.1.2???????? 13.1.3???????-è§??????o ???????¤????????????o?????????è?????é?????????°'é????-????3???????è?a??¨??·?°'??-????3???????è?a??¨??·?°' ??-????3???????é????¨é???????¨?3???????
13.1.4??????-????????3??????o????o?è???????????è?a??¨???è-|?3????????1??o???|?????°è???????????????????????è?a??¨???è-|?3????è??è??è§?è????? GB50116 ????????3è§???????
13.2?????é?2è?????
13.2.1??é????¨??????????'?????°??????-????3???????é?????????°'é????-????3????????????o???????o???????è???????¤?§?????????-???????????¨???????????????è-|?3?????o??????-????3????è????¨ ???
13.2.2????-????3??????§?????¨?o???¨??-???è???¤???¨????1???????è????¨??§?????3é?-??o?????????é??é?¨???é??é??????1??o?????-???oè°???o??????é????o????????-é?????é?2????o??-????
13.2.3????o???????o?è?????è-|????????o???é?¨????????1?o?è???????-???????¤o????????-????3?????????§ ?????±??????????o?è???????¨??o????¤?????o????????????°??1???????o????é?2?-?è????????????????¤è????????
13.2.4???°??????-????3?????????-?????????è??????o?é????¨??????é?2??????é?¨é?¨????????????????o§??????
13.2.5??è?a??¨??·?°'??-????3?????????·?°'??o?o|????????¨é???§??-?è??è???????°?o??????§??°è???????? ?????????è?a??¨??·?°'??-????3????è??è??è§?è???????? GB50084 ???????????3è§??????§è?????
13.2.6??????-????????3??????o??????è?a??¨??·?°'??-????3????????o?è?????????????????è-|é????????
13.2.7??????-????????3??????o?????????????????-?????¨???è??????o???|?????°è???????????????????o?-? ??-?????¨é?????è??è??è§?è???????? GB50140) ????????3è§?????????-??????????o???1????-???????è???¤?é????? ?±?????????3???
13.3 ?????¨??a???
13.3.1?????è??????'?????°??????-????3????????????o???????o?é??????????¨??o?°?????????¨????°§?°?????????¨???
13.3.2??????-????????3??????o????o?é?????é?2é????3???é?2è????3??a??????

 

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