My boyfriend got me a silver necklace with an emblem of an angel, and the wings of the angel have small diamond pieces in themIt's gotten kind of dirty, and some grim has gotten in between the pieces of diamonds, and I want to clean it.I've seen videos of how to clean silver jewelry by putting aluminum foil in a bowl, then putting in salt, baking soda, and boiling waterWhat I'm worried about is if this mixture will somehow mess with whatever is holding in the diamondsIs this safe for the diamonds? Or will they fall out?Or if any of you know any other home mixtures for cleaning silver jewelry with diamonds in it, I'll be glad to know.Thanks
If by 3-phase bank you mean an array of two or three separate single-phase transformers, wired to handle 3-phase voltage changes, the 3-phase transformer will require less iron and copper to handle the same power.
The advantage of a three phase transformer over a three phase bank are: It is easier to install and the unit occupies lesser spaceThe transformer unit can't pe pilferred easily because of its heavy weightThe disadvantages are: Cost of investment is high because a smaller capacity might have been used instead of a bigger unit.In a bank transformer, 2 units connected in delta may accomodate a given load for a given periodA third transformer may be installed later when load has increased requiring a third unit.
Generally if you see three single phase transformers all mounted on one pole( not sure what a hydro pole is?), they are connected to supply three phase service to the customerNot usually three single phase services, at least in the USAThe three single phase transformers may supply 208Y/120 volt 4 wire three phase, 120/240 volt 4 wire three phase (usually one of the transformers in this configuration is larger than the other two), 240 volt three wire delta or 480 volt delta, or a 480/277 volt 4 wire service., And on and onThis is determined by the voltage ratios of the transformers used and what the local utility supplies as a normal service voltageHope this helps, Newton1Law
Advantages Of Transformers
The place your boyfriend bought it at should do it for free, they always do it at Pandora for my stuff DO NOT do that stupid Youtube videoIf, at all, you need something that you can buy go out and get an actual cleanerPlenty of stores sell a jewelry cleaner (just make sure it's a silver one)You can either buy the clothes and use a toothpick inside the cloth to get at the little spaces, or buy the liquid form, which usually comes with a brush BTW; that aluminum foil trick is actually a Martha Stewart tricking for cleaning silver forks/utensils, etcNot for jewelryThat's a whole other grade of silver.
