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무선통신보조설비의 화재안전기술기준 (NFTC 505)

[시행 2022-12-01] 대한민국 국가 화재안전기술기준 공식 전문 · (소방청 공고 제2022-239호) 무선통신보조설비의 화재안전기술기준(NFTC 505).hwp

💡 핵심 실무 요약: 누설동축케이블, 무선이동국 안테나, 분배기·증폭기, 50Ω 임피던스

1.일반사항············································································································1

1.1적용범위·······································································································1

1.2기준의효력·································································································1

1.3기준의시행·································································································1

1.4기준의특례·································································································1

1.5경과조치·······································································································1

1.6다른법령과의관계···················································································2

1.7용어의정의·································································································2

2.기술기준············································································································2

2.1무선통신보조설비의설치제외··································································2

2.2누설동축케이블등·····················································································2

2.3옥외안테나···································································································3

2.4분배기등·····································································································3

2.5증폭기등·····································································································4

무선통신보조설비의화재안전기술기준(NFTC505)

1. 일반사항

1.1 적용범위

1.1.1 이 기준은「소방시설설치 및 관리에관한 법률 시행령」(이하 “영”이라 한다) 별표 4 제5호마목에따른

무선통신보조설비의설치및관리에대해적용한다.

1.2 기준의효력

1.2.1 이 기준은「소방시설설치및 관리에관한법률」(이하“법”이라한다) 제2조제1항제6호나목에따라소화

활동설비인무선통신보조설비의기술기준으로서의효력을가진다.

1.2.2 이기준에적합한경우에는법제2조제1항제6호나목에따라「무선통신보조설비의화재안전성능기준(NFPC

505)」을충족하는것으로본다.

1.3 기준의시행

1.3.1 이기준은2022년12월1일부터시행한다.

1.4 기준의특례

1.4.1 소방본부장또는 소방서장은기존건축물이증축‧

개축‧

대수선되거나용도변경되는 경우에있어서이 기준

이 정하는기준에따라해당건축물에설치해야할 무선통신보조설비의배관‧

배선등의공사가현저하게곤란하

다고인정되는경우에는해당설비의기능및사용에지장이없는범위안에서이기준의일부를적용하지않을

수있다.

1.5 경과조치

1.5.1 이기준시행전에건축허가등의신청또는신고를하거나소방시설공사의착공신고를한특정소방대상물

에대해서는종전의「무선통신보조설비의화재안전기준(NFSC505)」에따른다.

1.5.2 이 기준시행전에1.5.1에 따른신청또는신고를한 경우라도제정기준이종전의기준에비하여관계인

에게유리한경우에는제정기준에따를수있다.

1.6 다른법령과의관계

1.6.1 이기준시행당시다른법령또는행정규칙등에서종전의화재안전기준을인용한경우에이기준가운데

그에해당하는규정이있는경우에는종전의규정에갈음하여이기준의해당규정을인용한것으로본다.

1.7 용어의정의

1.7.1 이기준에서사용하는용어의정의는다음과같다.

1.7.1 .1 “누설동축케이블”이란동축케이블의외부도체에가느다란홈을만들어서전파가외부로새어나갈 수 있

도록한케이블을말한다.

1.7.1 .2 “분배기”란신호의전송로가분기되는장소에설치하는것으로임피던스매칭(Matching)과신호균등분배

를위해사용하는장치를말한다.

1.7.1 .3 “분파기”란서로다른주파수의합성된신호를분리하기위해서사용하는장치를말한다.

1.7.1 .4 “혼합기”란2이상의입력신호를원하는비율로조합한출력이발생하도록하는장치를말한다.

1.7.1 .5 “증폭기”란전압·전류의진폭을늘려감도등을개선하는장치를말한다.

1.7.1 .6 “무선중계기”란안테나를통하여수신된무전기신호를증폭한후음영지역에재방사하여무전기상호간

송수신이가능하도록하는장치를말한다.

1.7.1 .7 “옥외안테나”란감시제어반등에설치된무선중계기의입력과출력포트에연결되어송수신신호를원활하

게방사·수신하기위해옥외에설치하는장치를말한다.

1.7.1 .8 “임피던스”란교류회로에전압이가해졌을때전류의흐름을방해하는값으로서교류회로에서의전류에

대한전압의비를말한다.

2. 기술기준

2.1 무선통신보조설비의설치제외

2.1.1 지하층으로서특정소방대상물의바닥부분2면 이상이지표면과동일하거나지표면으로부터의깊이가 1 m

이하인경우에는해당층에한해무선통신보조설비를설치하지아니할수있다.

2.2 누설동축케이블등

2.2.1 무선통신보조설비의누설동축케이블등은다음의기준에따라설치해야한다.

2.2.1 .1 소방전용주파수대에서전파의전송또는복사에적합한것으로서소방전용의것으로할 것. 다만, 소방대

상호간의무선연락에지장이없는경우에는다른용도와겸용할수있다.

2.2.1 .2 누설동축케이블과이에접속하는안테나또는동축케이블과이에접속하는안테나로구성할것

2.2.1 .3 누설동축케이블및동축케이블은불연또는난연성의것으로서습기등의환경조건에따라전기의특성이

변질되지않는것으로하고,노출하여설치한경우에는피난및통행에장애가없도록할것

2.2.1 .4 누설동축케이블및동축케이블은화재에따라해당케이블의피복이소실된경우에케이블본체가떨어지

지않도록4m이내마다금속제또는자기제등의지지금구로벽·천장·기둥등에견고하게고정할것.다만,불연

재료로구획된반자안에설치하는경우에는그렇지않다.

2.2.1 .5 누설동축케이블및안테나는금속판등에따라전파의복사또는특성이현저하게저하되지않는위치에

설치할것

2.2.1 .6 누설동축케이블및안테나는고압의전로로부터1.5m이상떨어진위치에설치할것. 다만, 해당전로에

정전기차폐장치를유효하게설치한경우에는그렇지않다.

2.2.1 .7 누설동축케이블의 끝부분에는무반사종단저항을견고하게설치할것

2.2.2 누설동축케이블및 동축케이블의임피던스는50 Ω으로하고, 이에 접속하는안테나·분배기기타의 장치는

해당임피던스에적합한것으로해야한다.

2.2.3 무선통신보조설비는다음의기준에따라설치해야한다.

2.2.3 .1 누설동축케이블또는동축케이블과이에접속하는안테나가설치된층은 모든 부분(계단실, 승강기, 별도

구획된실포함)에서유효하게통신이가능할것

2.2.3 .2 옥외안테나와연결된 무전기와건축물 내부에 존재하는무전기 간의 상호통신, 건축물 내부에 존재하는

무전기간의 상호통신, 옥외안테나와연결된무전기와방재실또는건축물내부에존재하는무전기와방재실간

의상호통신이가능할것

2.3 옥외안테나

2.3.1 옥외안테나는다음의기준에따라설치해야한다.

2.3.1 .1 건축물, 지하가, 터널 또는공동구의출입구(「건축법시행령」 제39조에따른출구또는이와유사한출

입구를말한다)및출입구인근에서통신이가능한장소에설치할것

2.3.1 .2 다른용도로사용되는안테나로인한통신장애가발생하지않도록설치할것

2.3.1 .3 옥외안테나는견고하게파손의우려가없는 곳에설치하고그가까운 곳의보기 쉬운 곳에”무선통신보조

설비안테나”라는표시와 함께통신가능거리를표시한표지를설치할것

2.3.1 .4 수신기가설치된장소 등 사람이 상시 근무하는장소에는옥외안테나의위치가 모두 표시된옥외안테나

위치표시도를비치할것

2.4 분배기등

2.4.1 분배기·분파기및혼합기등은다음의기준에따라설치해야한다.

2.4.1 .1 먼지·습기및부식등에따라기능에이상을가져오지않도록할것

2.4.1 .2 임피던스는50 Ω의것으로할것

2.4.1 .3 점검에 편리하고화재등의재해로인한피해의우려가없는장소에설치할것

2.5 증폭기등

2.5.1 증폭기및무선중계기를설치하는경우에는다음의기준에따라설치해야한다.

2.5.1 .1 상용전원은전기가정상적으로공급되는축전지설비,전기저장장치(외부전기에너지를저장해 두었다가 필

요한때전기를공급하는장치)또는교류전압의옥내간선으로하고,전원까지의배선은전용으로할것

2.5.1 .2 증폭기의전면에는주회로전원의정상여부를표시할수있는표시등및전압계를설치할것

2.5.1 .3 증폭기에는비상전원이부착된것으로하고해당비상전원용량은 무선통신보조설비를유효하게30분 이

상 작동시킬수있는것으로할것

2.5.1 .4 증폭기및무선중계기를설치하는경우에는「전파법」제58조의2에따른적합성평가를 받은제품으로설

치하고임의로변경하지않도록할것

2.5.1 .5 디지털방식의무전기를사용하는데지장이없도록설치할것

화재안전기술기준

무선통신보조설비의

화재안전기술기준(NFTC505)

 발행처: 국립소방연구원

TEL 041-559-0592

FAX 041-541-1108

 발행일:2022년12월1일

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https://nftc.nfire.go.kr

🏛️ 소방청 & 국립소방연구원 화재안전기술기준정보시스템(NFTC) 최신 공식 데이터 준수
소방기술사 · 소방시설관리사 · 소방설비기사 수험 및 시공·감리 실무 기준

무선통신보조설비의 화재안전기술기준(NFTC 505) 한눈에 보는 최신 전문 (들여쓰기·핵심기준 총정리)

무선통신보조설비의 화재안전기술기준 (NFTC 505)

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