¿ªÔÆÌåÓý??Quite right, Dave. ?I didn't see a picture, but from your description, you have a NEMA 6-15 plug, which is as you thought for 240V. ?Earth is green, but since the US is center-tapped 240V, there's no neutral; both blades are hot. ?I don't know?the wire
color code for this case.
HTH, Dave Wise From: [email protected] <[email protected]> on behalf of Dr. David Kirkby from Kirkby Microwave Ltd
<drkirkby@...>
Sent: Friday, November 02, 2018 4:23 PM To: [email protected]; RSGBTechnical Subject: [HP-Agilent-Keysight-equipment] What's this mains plug with live/neutral horizontal when earth is at the top? ?
Sorry, this is a bit off-topic for the HP/Agilent list, but I'm hoping someone, (probably from the USA), can help me.
I bought a Gamma high-voltage regulated power supply (0-15 kV, 0-12 mA). from eBay. The UK seller said it is 120 V, so needs a transformer to run from the UK mains, The mains voltage here is supposed to be 230 -6%/+10%. But I have my suspicions that the UK seller may be wrong, as the US manufacturer sent me a manual on the power supply, which says its 220 VAC. But they wrote it is a 20-year old custom design. (It's entirely possible someone has changed things.) I know one can always start at a low voltage, and I have a variac. But I'm also aware in some cases that using too low a voltage can damage equipment. So if this thing is supposed to take 220 V, I'd rather not start with 120 V.
The manual has no tolerance for the mains voltage - it just says 220 VAC. My own voltage is typically 235 V.
Some time ago the voltage was logged here for a period of 4 days and peaked at 255 VAC (RMS value), but the transformer taps have since been changed, and the voltage dropped 5%, so I think it might peak at 243 VAC RMS - and that would only be very occasionally. One other thing. When I cut this mains plug off, what colour cables would I expect to see, and what would be live and neutral?
Here in the UK, neutral is very close in voltage to the earth wire - ideally, it is zero. Would there be an equivalent wire colour on this mains lead?
This thing can produce 15 kV at 12 mA, which I would guess would give someone a nasty burn at the very least, and could even be fatal. But my biggest concern at the minute is how to get power to this.?
Dave
-- Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom. Registered in England and Wales as company number 08914892 Tel 01621-680100 / +44 1621-680100 |
