防爆標(biāo)志舉例 Explosive mark exemplify
1. 如電氣設(shè)備為ⅡB類隔爆型T3組，標(biāo)志為ExdⅡBT3。
2. 如電氣設(shè)備為Ⅱ類增安型，溫度組別為T2組，標(biāo)志為ExeⅡT2。
3. 如電氣設(shè)備采用一種以上的復(fù)合型式，則先標(biāo)出主體防爆型式，后標(biāo)出其它防爆型式，如主體采用增安型內(nèi)裝ⅡC類隔爆部件，溫度組別為T4，標(biāo)志為ExedⅡCT4。如果主要部件采用隔爆型ⅡB類，T4組，其余部件為增安型，則防爆標(biāo)志為ExdeⅡBT4。
4. DIP A20 TA,T4，DIP表示粉塵防爆，A20表示可使用于20區(qū)的A型設(shè)備，TA,T4表示設(shè)備的溫度組別為T4(135℃)。
1. Class ⅡB,group T3 falmeproof explosive electric equipment, mark "ExdⅡBT3".
2. Class Ⅱ,group T2 increasing safety explosive electric equipment, mark "ExeⅡT2".
3. It adopts multiple type, First mark main explosive proof type. Then mark other explosive-proof type.The main body adopt increasing safety and built-in classⅡC isolative explosion parts,temperature T4,mark "EexdⅡCT4",if main part adopts isolative explosive ⅡB T4,other adopt increasing safety, then it marks " ExdeⅡBT4".
4. DIP A20 TA,T4, DIP means dustignition explosion-proof ,A20 means type A explosive-proof equipment and used for Zone 20,TA,T4 means temperature T4 (135℃)
氣體和蒸氣按其試驗(yàn)安全間隙(MESG)和小點(diǎn)燃電流(MIC)分級
Ari and vapor class according to MESG and MIC
|
類 別 Item
| 試驗(yàn)安全(MESG)(mm)
Max safety creeping clearance (MESG) | 小點(diǎn)燃電流比（MIC） Mix igniting current (MIC) |
| ⅡA | ≥0.9 | ＞0.8 |
| ⅡB | 0.5＜MESG≤0.9 | 0.45≤MICR≤0.8 |
| ⅡC | ≤0.5 | ＜0.45 |
場所中的氣體、蒸氣分級/允許使用設(shè)備級別
Classification of gas and vapor / permitted apparatus classitication
|
場場所中氣體、蒸氣分級 Classification of gas and vap
| 允許使用設(shè)備級別
Permitted apparatus classification |
| *
Class A | (例如：丙烷、戊烷、苯、汽油、乙醇、乙醛、丙酮、甲胺等)
(Example: propane, hexane, benzene, gasoline, ethanol, acetaldehyde, acetone, methylamine) | ⅡA、ⅡB或ⅡC |
| B級
Class B | (例如：乙稀、二甲醚、焦?fàn)t煤氣等)
(Example: ethylene, climethyl ether, coke over gas) | ⅡB、ⅡC |
| C級
Class C | (例如：氫氣、乙炔和二硫化碳)
(Example: hydrogen, acetylene, carbon disulphide) | ⅡC |
防腐電工產(chǎn)品標(biāo)志 Mark of anti-corrosive electrical products
|
環(huán)境條件
Environment conditions
| 適用環(huán)境類別和標(biāo)志 Applicable environment group and mark |
| 0類(輕腐蝕環(huán)境)
Group 0 ( light corrosive
environment ) | 1類(中等腐蝕環(huán)境)
Group 1 ( middlecorrosive
environment ) | 2類(強(qiáng)腐蝕環(huán)境)
Group 2 ( strong corrosive
environment ) |
| 戶內(nèi) Indoor | 
| F1 | F2 |
| 戶外 Outdoor | W | WF1 | WF2 |
引入裝置通徑對應(yīng)表 Inlet set diameter list
|
通 徑 Dia
| 相對應(yīng)的管螺紋(G")
Inlet size | 俗稱 Name | 允許電纜(mm)
Cable Max diameter |
| DN15 | 1/2 | 4 分 | Φ7～Φ10 |
| DN20 | 3/4 | 6 分 | Φ10～Φ14 |
| DN25 | 1 | 1吋 | Φ12～Φ18 |
| DN32 | 1 1/4 | 1.2吋 | Φ18～Φ30 |
| DN40 | 1 1/2 | 1.5吋 | Φ18～Φ30 |
| DN50 | 2 | 2吋 | Φ30～Φ46 |
| DN70 | 2 1/2 | 2．5吋 | Φ38～Φ56 |
| DN80 | 3 | 3吋 | Φ61～Φ80 |
| DN100 | 4 | 4吋 | Φ61～Φ80 |
