Can a 220VAC solenoid valve use an 8x2x1.5 multi-core cable?
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I recently saw a setup where a 220VAC solenoid valve was used, along with an 8x2x1.5 multi-core cable. If it is 24VDC, multi-core cables are used without any doubt; then can multi-core cables be used for the control signals of solenoid valves at 220VAC? It’s impossible to use multi-core cables for 220VAC AC power distribution; I’m confused. Please advise!
Alternating currents interfere with each other, so measures must be taken to eliminate these interferences.
Sure, that’s how we use it. Is there any problem?
A 1.5-square multi-core cable is suitable for powering the instrument solenoid valve. As for the inability to use electrical distribution, it is mainly due to high current levels (multi-core cables cannot dissipate heat, and there is also a risk of short circuits and fires)
The current of the instrument solenoid valve generally does not exceed 0.5A
Solenoids generally have low power consumption, so using a multi-core cable is no problem
0.5A is way too high; I guess the inrush current at the moment the solenoid is powered on isn’t that large either.
The solenoid valves are fine, but this design seems overly extravagant. Since the solenoid valves are all together, why not use a single control unit? From what I understand, it seems that the DCS is used to control the auxiliary equipment, and DCS systems often end up wasting resources in this way
Those who work with instruments are just specialists in that field; is it a matter of wire diameter? Doing so violates multiple design specifications; to give just one example, clause 8.1.7 of the \"HG/T20512-2014 Specifications for the Design of Instrument Piping and Wiring\" states that signals of different voltage levels should not share the same multi-core cable or wiring box. I think the biggest problem with doing this is safety.
Solenoids designed for 220V are not safe; in theory, solenoids operating at 24V should use 2.5 mm² wires
The voltage is all 220VAC; there are no different levels. I’m also worried about safety, but I can’t find any guidelines……