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KTC正壓防爆儀表、配電盤、柜、箱（IIB、IIC）定做

KTC Pressurized Explosion-protected Meter and Distribution Panel,Cabinet, Box(IIB、IIC)

適用范圍 Application
1、爆炸性氣體環境：1區、2區
2、場所中危險氣體或蒸氣：IIA、IIB、IIC
3、溫度組別：T1～T4
4、環境溫度：-20℃～+40℃
5、戶內、戶外

1、Explosive gas atmospheres:Zone 1＆2
2、Dangerous gases or vapors zone: IIA、IIB、IIC
3、Temperature classes:T1～T4
4、Environment temperature:-20℃～+40℃
5、Indoor and outdoor

KTC正壓防爆儀表、配電盤、柜、箱（IIB、IIC）定做

KTC正壓防爆儀表、配電盤、柜、箱（IIB、IIC）定做主要技術參數
1、防爆標志：Expdem II BT4 Expdem II CT6 2、防護等級IP54(可達IP56)
3、副（柜箱）內供電220VAC±10% , 50-60HZ, 10A
4、輸入氣源：0.4-0.8MPa,凈化空氣或氮氣等保護氣體
5、進氣口為：G1/2 6、換氣量為：10-20m3/h
7、換氣時間：10-30min(由防爆檢測單位確定，tp=5×V/Q, tp：換氣時間，V:主腔內凈容量，Q:保護氣體的流量）
8、耗氣量為：2-8m3/h (根據盤、柜的容積和面板操作元件的多少及其密封程度而定）
9、功能指標：
a)儀表、電器供電前，對盤、柜內剩余空氣按啟動按鈕自動換氣。換氣結束自動維持正壓值250Pa±100Pa,此時可向盤、柜內儀表、電器供電
b)盤、柜內工作正壓值為250Pa±100Pa
c)內部正壓值＜150Pa時，自動補氣
d)內部正壓值＜80Pa時，自動聲光報警
e)內部正壓值＜50Pa時，自動切斷電源（2區危險場所使用時，需此功能請注明）
Specification
1.Ex-marking:Expdem II BT4 Expdem II CT6 2.Degree of protection:IP54(to IP56)
3.Power supply in auxiliary panel (cabinet or box):220V±10%, 50-60HZ 10A
4. Input air source:0.4-0.8MPa,etc.protective gas such as purged air or nitrogen
5.Air input size:G1/2 6.Air purging capacity:10-20m3/h
7.Air purging time:10-30 min(determined by test station,Tp=5×V/Q, Tp:air purging time V:net volume of main compartment Q:capacity of protective gas)
8.Consumed gas:2-8m3/h(determined by volume of panel or cabinet,number of operating parts, and sealing condition)
9.Function indexes:
a)Before meter or apparatus are energized,operate the push button to purge,at the end of air puring,maintain overpressure of 250±100Pa,then automatically supply power to meter or apparatas in panel or cabinet.
b)Overpressure value in the board (Cabinet)250± 100Pa
c)Overpressure value in the board(Cabinet)＜150Pa,automatically supply air
d)Overpressure value in the board(Cabinet)＜80Pa,automatic alarming with sound and light
e)Overpressure value in the board (Cabinet)＜50Pa,automatically disconnect power (Please refer when it used for zone 2)

表1(Table 1)