This is a Stabistor - IG1271 - STB620
Lots of Heathkit part cross-references at http://www.tech-systems-labs.com/heathkitparts.htm; Google is your friend, try [heathkit parts cross-reference] for more...
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Under voltage protection (release?) is used in industry. If there was a power failure and a piece of equipment was running when the failure occurred for safety reasons the machinery should not start up on its own when the power returns back on. With under voltage protection the operator restarts the machinery after checking that there is no danger to anyone and the machine is clear to start. To obtain this safety feature an electrical contactor is used in conjunction with remote stop - start buttons located at the machine the operator is working.
Answer for USA, Canada and countries running a 60 Hz supply service.Depending on the insulation, these wires can be used for anything except grounds and neutrals. In commercial and industrial settings, black/red/blue are colors usually used for 120/208v 3-phase systems. This is an industry standard, not a code requirement. In homes, black and red are used for each leg of the single phase 120/240v system. But again, this is not a code requirement.As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.Before you do any work yourself,on electrical circuits, equipment or appliances,always use a test meter to ensure the circuit is, in fact, de-energized.
H1 H2, X1 X2 is subtractive polarity--either above 9000Volts or 200 KVa H1 H2, X2 X1 is additive polarity--both must be below the above values. These values and determinations, however, are a NEMA standard. Non-standard transformers (foreign) may be different. Make a temporary connection between H1 and the X1/X2 terminal. Apply a low test voltage to the H1 and H2. Read the voltage across H2 and the X1/X2 terminal. --If the output voltage is higher than the test voltage then the transformar is additive. --If the output voltage is lower than the test voltage then the transformer is subtractive.
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The contractor training can give you important skills and knowledge inside the industry, this enables anyone learning the skills to carry out the tasks effectivly and to the recommended professional standard.
Anyone who isn't Greek.
It is the international standard for food safety - therefore should be followed by anyone handling or preparing food - UK legal standards are taken from it - Environmental Health Officer
Computational Statistics is an interesting area with lots of hard problems. There's a lot of brute-force around standard or reference distributions that could use some subtlety.
No it doesnt has any reference
The same as anyone else.
No, it is open for any one. Anyone with a talent is welcomed into the Industry. Even old people are welcomed into the Industry.
I am searching this part, anyone can tell me where i can get it?
There doesn't look to be a difference between the brands of LEDs, it seems to be a industry standard LED. It's the quality of the TV itself and what it can do that makes Samsung better.
I am STUMPED. LOL If anyone has an answer, please email me with the answer. I have debated the possible meanings, its not industry standard. Perhaps a salespersons term used to encourage debtor to OK a higher interest rate? If OP would post more info as to how it presented???
anyone