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which Machine u will prefer to use at place where Flammable
gases are coming out & why ??
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Answer Posted / perlsdelsur
Firth of all you may have to do a proper harzadous clacification area to determine if the place where you are going to install your motor is DIV 1, 2 or other (done by chemical certificated enginner)then after you must to select the suitable motor for that area operation, motor for harzadous manufacturers can give the information you need but you have to carefully to choice the correct motor because this involve to great riisk to choise a rong motor
Bye
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When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number
a)In a 3-phase 4-wire circuit, a circuit breaker is selected to protect the circuit whose highest fault level is 6.6 MVA. Determine the required minimum breaking capacity in kA. (Note: Covert 3-phase power in terms of kA to find answer.) b)Using the below, determine the required minimum making capacity in kA as a “peak value”. Rate breaking capacity (Icn) ka: Icn<= 1.5 Factor = 1.41 1.5
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