Testing started: opinions welcome - Page 2

BillA · 06-20-2003, 09:36 AM

and . . . . .
us Little Giant people want to know

can you get access to a Megger ? (high voltage resistance)

pHaestus · 06-20-2003, 09:43 AM

Oh the fault was not with the pump I think. The wires on the AC outlet were reversed (checked it yesterday). Glad I haven't plugged anything else of value into that outlet. Too bad it cost me a soldered up CPU though.

zoson · 06-20-2003, 10:19 AM

Basically, to get rid of EMI you need a very pourous metal such as nickel (commonly used to shield against EMI). You can buy EMI shield spray. It works fairly well at eliminating EMI completely. I think yahoo shopping has it. Anyway, because water is polar by nature, any magnetic fields that are generated by the pump will give water a charge which is what you're experiencing. You would have to coat the inside of the pump with the spray stuff as well, but then you may not have an operable pump.
The only thing I can think of is add a large concentration of a nonpolar liquid to your coolant...
-Zoson

Since87 · 06-20-2003, 11:33 AM

Quote:

Originally posted by pHaestus
Oh the fault was not with the pump I think. The wires on the AC outlet were reversed (checked it yesterday). Glad I haven't plugged anything else of value into that outlet. Too bad it cost me a soldered up CPU though.

That can't be the whole story though. For the miswiring to have an impact, there must have been a conductive path from the pump wiring to the CPU. (Magnetic field might be an issue as well, but the magnetic environment won't be changed by swapping the hot and neutral lines of the AC power.)

I think checking conductivity between the coolant and the wiring is still very important.

06-20-2003, 10:19 AM	#28
zoson Cooling Savant Join Date: Nov 2001 Location: X Posts: 204	Basically, to get rid of EMI you need a very pourous metal such as nickel (commonly used to shield against EMI). You can buy EMI shield spray. It works fairly well at eliminating EMI completely. I think yahoo shopping has it. Anyway, because water is polar by nature, any magnetic fields that are generated by the pump will give water a charge which is what you're experiencing. You would have to coat the inside of the pump with the spray stuff as well, but then you may not have an operable pump. The only thing I can think of is add a large concentration of a nonpolar liquid to your coolant... -Zoson __________________ Core i7 930 @ 4254Hz 22x193 \| ASUS R3E 901 BIOS \| 12GB Mushkin Blackline 3x4GB @ 1547MHz 7-8-7-24-1N \| Lian Li PC-A10B 2x EVGA GTX275 SLI @ 720/1266/1566 \| 2x 80GB Intel X25-M G2 SSD Raid 0 \| 3x 1TB Samsung Spinpoint 7.2K Raid 5 \| Corsair 950TX H2O \| Enzotech Sapphire Rev.A \| EK-FB RE3 \| Swiftech - 2x MCW60/GTX275 Unisink, MCP655b, MCRes Micro.v2 \| 3x HWLabs SR1-120 あなたの神への弓 Time isn't wasted, when you're gettin' wasted.

06-20-2003, 09:36 AM	#26
BillA CoolingWorks Tech Guy Formerly "Unregistered" Join Date: Dec 2000 Location: Posts: 2,371.493,106 Posts: 4,440	and . . . . . us Little Giant people want to know can you get access to a Megger ? (high voltage resistance)

06-20-2003, 09:43 AM	#27
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	Oh the fault was not with the pump I think. The wires on the AC outlet were reversed (checked it yesterday). Glad I haven't plugged anything else of value into that outlet. Too bad it cost me a soldered up CPU though.

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