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防爆術語：
有關防爆術語及標準
安全柵安全參數(shù)定義：
安全柵安全參數(shù)定義：
安全柵zui高允許電壓：Um
保證安全柵本安端的本安性能，允許非本安端可能輸入的zui高電壓
安全柵zui高開路電壓：Uoc
在zui高允許電壓范圍內(nèi)本安端開路時電壓zui大值
安全柵zui大短路電流：Isc
在zui高允許電壓范圍內(nèi)本安端短路時的電流zui大值
安全柵允許分布電容：Ca
保證本質(zhì)安全性能情況下本安端zui大允許外接電容
安全柵允許分布電感：La
保證本質(zhì)安全性能情況下本安端zui大允許外接電感
防爆標志格式說明：
將工廠或礦區(qū)的爆炸危險介質(zhì)，按其引燃能量，zui小點燃溫度以及現(xiàn)場爆炸性危險氣體存在的時間周期進行科學分類分級，以確定現(xiàn)場防爆設備的防爆標志和防爆形式。
防爆標志格式：
Ex （ia） ⅡC T4
防爆標記防爆等級氣體組別溫度組別
Explosion-proof terms:
Relevant explosion-proof terms and standards
Definition of safety parameters of safety barrier:
Highest allowable voltage of safety barrier: Um
Ensure the intrinsic safety performance of the intrinsically safe end of the safety barrier, and allow the highest voltage that may be input to the non-intrinsically safe end
Safety barrier high open circuit voltage: Uoc
The maximum value of the voltage when the intrinsically safe terminal is opened in the high allowable voltage range
Large short-circuit current of safety barrier: Isc
The maximum value of the current when the intrinsic safety terminal is short-circuited within the maximum allowable voltage range
Safety barrier allows distributed capacitance: Ca
Under intrinsically safe performance, the intrinsically safe terminal allows a large external capacitor
Safety barrier allows distributed inductance: La
The intrinsically safe end allows a large external inductance to ensure intrinsic safety performance
Description of explosion-proof mark format:
According to the ignition energy, the minimum ignition temperature and the time period of the presence of explosive hazardous gases in the factory or mine area, the explosion hazardous medium shall be scientifically classified to determine the explosion-proof mark and explosion-proof form of the explosion-proof equipment on site.
Explosion-proof mark format:
Ex (ia) ⅡC T4
Explosion-proof mark Explosion-proof grade Gas group Temperature group
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