外殼防護等級相關規定

NEMA

Indoor Nonhazardous Locations

Type of Enclosure
Provides a Degree of Protection Against the Following Enviroment Conditions
1*
2*
4
4X
5
6
6P
12
12K
13
Incidental contact with the enclosed equipment
Failing dirt
Falling liquids and light
Circulating dust, lint, finbers and flyings **
Settling airborne dust, lint, fibers, and flyings **
Hosedown and splashing water
Oil and coolant seepage
Oil or coolant spraying and splashing
Corrosive agents
Occasional temporary submersion
Occasional prolonged submersion
* These enclosures may be ventilated.

**

These fibers and flyings are nonhazardous materials and are not considered Class III type ignitable fibers or combustible flyings. For Class III type ignitable fibers or combustible flyings see the National Electrical Code, Article 500.

 

Outdoor Nonhazardous Locations

Type of Enclosure
Provides a Degree of Protection Against the Following Enviroment Conditions
3
3R*
3S
4
4X
6
6P
Incidental contact with the enclosed equipment
Rain, snow, and sleet **
Sleet **
Windblown dust, lint, fibers, and flyings
 
Hosedown
 
Corrosive agents
Occasional temporary submersion
Occasional prolonged submersion
* These enclosures may be ventilated.

**

External operating mechanisms are not required to be operable when the enclosure is ice covered.
*** External operating mechanisms are operable when the enclosure is ice covered

 

 

Indoor Hazardous Locations

Type of Enclosure
Provides a Degree of Protection Against the Atomospheres Typically Containing
Class
A
B
C
D
E
F
G
10
I
Acetylene
I
 
Hydrogen, manufactured gas
I
 
Diethyl
I
 
Gasoline, hexane, butane, maphtha, propane, acetone, toluene, isoprene
II
 
Metal dust
II
 
Carbon black, coal dust, coke dust
II
 
Flour, starch, grain dust
III
Fibers, flyings **
MSHA
Methane with or without coal dust
* For Class III type ignitable fiber or combustible flying see the National Electrical Code, Article 500.

**

Due to the characteristics of the gas, vapor, or dust, a product suitable for another Class or Group unless marked on the product.

 

 

IP

國際電器技術委員會 IEC 529 箱體保護規定

其箱體的構造以 IP XX 來定義其保護構造之等級
第一個X字:
0
無保護
1
防止直徑大於50mm的固體外物進入箱體
2
防止手指接觸到帶電體及防止直徑大於12mm的固體外物進入箱體
3
防止直徑大於2.5mm的電線等接觸到帶電體及防止直徑大於2.5mm的固體外物進入
4
防止直徑大於1mm的電線等接觸到帶電體及防止直徑大於1mm的固體外物進入
5
防止任何物體接觸到帶電體及防止危險的灰塵附著物進入箱體
6
防止任何物體接觸到帶電體及防止任何灰塵進入箱體
第二個X字:
0
無保護
1
防止垂直落水滴進入箱體
2
防止15度角內傾斜落水滴入箱體
3
防止60度角內傾斜灑水滴進入箱體
4
防止任何方向飛濺水滴進入箱體
5
防止任何方向噴水滴進入箱體
6
防止任何方向頃刻間大量噴水滴進入箱體
7
防止頃刻間的浸水進入箱體
8
防止無期限的浸水進入箱體

 

 

Protection against contact and ingress of solid foreign bodies
Protection against ingress of water
1.Charact numeral
Temp f. extent of protection
2.Charact numeral
Temp f. extent of protection
IP
0
No protection
0
No protection
1
Protection against large size (>50 mm) solid foreign bodies
1
Protection against drops of water falling vertical
2
Protection against medium size (>12 mm) solid foreign bodies
2
Protection against drops of water falling at an angle up to 15 deg. from the vertical
3
Protection against small size (>12 mm) solid foreign bodies
3
Protection against drops of water falling at an angle up to 15 deg. from the vertica
4
Protection against granular size (>1 mm) solid foreign bodies
4
Protection against water splashed from any direction
5
Protection against harmful deposits of dust
5
Protection against water-jets. Projected by a nozzle from any direction
6
Protection against ingress of dust
6
Protection against temporary flooding(e.g. by waters from heavy seas on ships decks)
 
7
Protectin when being immersed in water(under stated pressure and time conditions)
 
8
Protectin when being submerged in water for unlimited time (under stated pressure conditions)

 

 

NEMA vs IP

 

NEMA
IP
1
IP 10
2
IP 11
3
IP 54
3R
IP 14
3S
IP 54
4 & 4X
IP 56
5
IP 52
6 & 6P
IP 67
12 & 12K
IP 52
13
IP54