TREASURIES-Prices dip as traders prepare for supply, Fed

* Traders position for refunding announcement, Fed

* Fed seen holding benchmark rates near zero

* No tweak seen to "extended period" low-rate pledge

* U.S. nonfarm payrolls due Friday will also be focus

* ADP Oct job report showed more job losses than forecast (Updates to after ADP report, adds context, quotes, byline)

By Ellen Freilich

NEW YORK, Nov 4 (Reuters) - U.S. government securities prices slipped on Wednesday as traders prepared themselves for a morning Treasury refunding announcement and a statement from the Federal Reserve on monetary policy this afternoon.

Dealers must make room for new supply that will arrive next week, but the Treasury will announce the size and terms of those three refunding auctions on Wednesday, after which the securities can be bought and sold on a "when-issued" basis.

Analysts at Goldman, Sachs estimate the Treasury will sell $40 billion in three-year notes, $25 billion in 10-year notes, and $15 billion in 30-year bonds next week, a net increase of $3 billion relative to the August refunding.

Investors often move to cheapen Treasuries prices ahead of such auctions.

The benchmark U.S. 10-year Treasury note US10YT=RR was down 12/32 in price, its yield rising to 3.52 percent from 3.47 percent late on Tuesday.

Thirty-year bonds US30YT=RR were down 25/32, its yield rising to 4.38 percent from 4.33 percent on Tuesday.

The statement the Fed's Federal Open Market Committee will release at the end of its two-day policy meeting on Wednesday afternoon is of keen interest to the markets.

Traders said the FOMC meeting was the market's focus and trading before the Fed's statement is released around 2:15 p.m. ET (1915 GMT) would likely be confined to a well-set range.

Analysts said that with underlying inflation pressures waning and most Fed officials expecting economic recovery to be slow, there is little incentive for the Fed -- the U.S. central bank -- to tighten monetary policy.

Analysts also said it is too soon for the Fed to even hint toward an exit from ultra-loose policy by tweaking its pledge to keep rates extraordinarily low for an "extended period."