1、KS C 0279 KSKSKSKSSKSKSKS KSKSKS SKSKS KSKS SKS KS - KS C 0279:1997 (2007 ) 1997 10 30 http:/www.kats.go.kr : ( ) ( ) : (http:/ www.standard.go.kr) ： : 1997 10 30 : 2007 10 30 2007- 0887 ： ( 02)503-7949 ) (http:/ www.kats.go.kr). 7 5 , . ICS 19.040 KS C 0279 - 1997 - (2007 ) Classification of enviro
2、nmental conditions Part 2:Environmental conditions apearing in nature -Temperature and humidity 1. . , . 5000m . . . IEC 721-1:1990(Classification of environmental conditions Part 1 : Environmental parameters and their severities) . 2. , , . 3. . . . (climatogram) . , , , . , , . . . 2 . (The mean v
3、alve over many years of the annual e xtreme values) : (The mean valve over many years of the annual extreme values) : (The absolute C 0279 - 1997 extreme) . . . . 4. 4.1 , . . 9 “ “ . 4.2 4 . 4 . 5. 5.1 . - - . . B . 5.2 5.2.1 19 . 3 . 1 , 2 3 . 5.2.2 X , Y . 10 . , . (1 ), , 5% . , . 5.2.3 5.2.2 .
4、10 . , . , 2 C 0279 - 1997 . . . , , . 10 . 5 . 01%, 005%. 5.2.4 10 5.22 . , . . 5.3 . 1 . 2 . 3 . 10 . 3 . 19 . 5.4 4 . a) (Restricted open-air climates) : b) (Moderate open-air climates) : , , , c) (General open-air climates) : d) (World wide open-air climates) : . 4 . 5 . 6 . 5.5 A 2 . 3 C 0279 -
5、 1997 4 C 0279 - 1997 5 C 0279 - 1997 6 C 0279 - 1997 7 C 0279 - 1997 8 C 0279 - 1997 9 C 0279 - 1997 10 C 0279 - 1997 11 C 0279 - 1997 12 C 0279 - 1997 13 C 0279 - 1997 14 C 0279 - 1997 15 C 0279 - 1997 A A1. A 2 1 , 1 . 5.3 54 . A2. . , , . A3. . - IEC -20 A4. A4.1 . . 2 . 2 . A4.2 2 2000m . . 2 ,
6、 ( :alternating climate). ( ). / . A4.3 ( A1) 2 . 2 2 . 2 , , , . A1 . A4.4 ( A2) 54 . . - 1 - 2 16 C 0279 - 1997 - 3 - 4 17 C 0279 - 1997 19 C 0279 - 1997 21 C 0279 - 1997 B B1. . IEC 721 . B1 B3 . (2) (3) . . B2. . . . B3. B1 3 . a) (g/m 3) : b) (%) : c) ( C) : , 100% (%), ( C ) (g/m3) . . ( ) C,
7、1Pa , . (t, )=0.007 93216.27316.273+t e /100 , (t, )=2.16716.273100/+te g/ (1) e : (Pa) : (%) t : ( C) . e . Linke-Baur : Metrologisches Taschenbuch, 2. Band, 2.Auflage, Leipzig 1970, page 476, table 46, mbar Pa 100 . T(K) . T= t+ 273.16 e (2) (3) . - 0C : ew - 0C : ei ew(T)=10010n (2) n=-7.902 9811
8、6.373T+5.028 08 logT16.373-1.381 6 10-7110163731344.11T23 C 0279 - 1997 +8.132 810-311016.37349149.3T+log1 013.246 ei(T)=10010m (3) m=-9.097 18116.273T-3.566 54 logT16.273+0.876 793T16.2731+log6.107 14 B4. B2 . IEC 721-3-3(Clssification of groups of environmental parameters and their severities. Sta
9、tionaly use at weatherprotected locations) 3k2 : 75% 15 c . . 9.5g/m 3. : . . 24 C 0279 - 1997 25 C 0279 - 1997 - 26 KS C 0279 :1997 - . IEC 721 . . IEC 106 (IEC Guide l06:Guide for specifying environ mental conditions for equipment performance rating, 1989. 5) . 721-2-1 . 10 . IEC 721 . 721-1: 721-
10、2: 2-1: 2-2: 2-3: 2-4: 2-5:, 2-6: 2-7: 2-8: 721-3: 3-0: 3-1: 3-2: 3-3: 3-4: 3-5: 3-6: 3-7: 3-8: 4 9 . . IEC 721-3 . - - 27 - 135513 7017 (02)60094567 (02)600948878 http:/ KS C 0279:1997 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Classification of environmental conditions Part 2:Environmental conditions apearing in nature -Temperature and humidity ICS 19.040 Korean Agency for Technology and Standards http:/www.kats.go.kr
