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QXFA Coil Saddles Miao Yu QXFA Coil Saddles Miao Yu

QXFA Coil Saddles Miao Yu - PowerPoint Presentation

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Uploaded On 2020-01-09

QXFA Coil Saddles Miao Yu - PPT Presentation

QXFA Coil Saddles Miao Yu 4042018 OL RE saddle to coil short QXFA 101 Hipot Test Coil to RE OL Saddle failed at 10V and 10 M Ω resistance QXFA 107 Hipot Test Coil to RE OL Saddle failed at 20V and 125 k ID: 772320

saddle qxfa coil coating qxfa saddle coating coil tips bidding impact option short saddles slits procurement finish action update

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QXFA Coil Saddles Miao Yu 4/04/2018

OL RE saddle to coil short QXFA 101: Hipot Test Coil to RE OL Saddle failed at 10V, and 10 M Ω resistanceQXFA 107: Hipot Test Coil to RE OL Saddle failed at 20V, and 125 kΩ resistance QXFA 101 QXFA 107

Saddle to coil short mitigation Option 1: Round the tips. Install the saddles with 5 mil Kapton at the tips and remove the Kapton after installation (started from QXFA 109 inner layer). Stock Receiving parts w/o coating AUP Procurement (finish bidding) Saddle 10 15 6+26+28+12 Action Update CAD model, round the tips (chipping off the coating), and recoating Round the tips before sending out for coating. Send the updated drawing to the vendor, possibly need bidding again Schedule Impact Delay QXFA 110 ~2 wks No No Cost Impact ~$2000 $0 $0

Saddle to coil short mitigation Option 2: Add minimum slits to saddles. Stock Receiving parts w/o coating AUP Procurement (finish bidding) Saddle 10 15 6+26+28+12 Action Update CAD model, wire cut the slits (chip off the coating), and recoating Additional machining before sending out for coating. Send the updated drawing to the vendor, possibly need bidding again Schedule Impact Delay QXFA 110 ~ 4 wks No No Cost Impact ~$12,000 ~$5,000 Price will go up

Option 1 Option 2