1. Injector, Sector 21 and BC1 Bulk Power Supplies
MCOR Ground Fault Detection and Protection
New Power Supply Quantities, Heat Loads and Redundancy Idea
Paul Bellomo, Antonio de Lira, Dave Mac Nair
October 14, 2005

2. Bulk Power Supplies
October 14, 2005

3. October 14, 2005

4. Use manually controllable 60V, 165A, 10kW power supply
Background
The three 60V, 165A, 10kW bulk power supplies require remote turn on - turn off capability. No monitoring is needed. Ethernet controller interface specified.
Problem
Power supplies operate in voltage, not current mode. Ethernet controller does not accommodate. No front panel, local control mode
Solution
Use manually controllable 60V, 165A, 10kW power supply
October 14, 2005

5. October 14, 2005

6. October 14, 2005

7. Increase quantity of 25V, 375A, 10kW power supplies by two for BC1
Remove Two 60V, 165A, 10kW Ethernet power supplies (not yet purchased, bids due 10/17)
Increase quantity of 25V, 375A, 10kW power supplies by two for BC1
No change in overall quantity or cost
Delete two 25V, 375A, 10kW power supplies for BC1 not yet purchased
Write purchase requisition for three 60V, 165A, 10kW MCOR local control bulk power supplies instead of one bulk for the Sector 21, BC1 MCORs – Net 1 add
Increase in quantity - zero
Overall change 0 10kW power supply, 0k$
October 14, 2005

8. List of Potential Bulk Power Supply Bidders
Elgar Electronics Corporation 60V, 167A, 10kW
SGA60/167E-1DAA
9250 Brown Deer Road
San Diego, CA Ph
Grant Moore
Matsushada 60V, 170A, 10kW
RE60-170
c/o BiRa Systems Incorporated
2410 Midtown Place, Suite A
Albuquerque, New Mexico 87107
Phone:
Mr. Phillip Biswell
EMI-Lambda Model 60V, 165A, 10kW
Model ESS
C/o Tritek Solutions, Suite 4
1800 Wyatt Drive
Santa Clara, Ca
Mr. Bret McDonald
(408) X405
October 14, 2005

9. Ground Fault Detection and Protection
October 14, 2005

10. The MCOR System does not include ground fault detection and protection
Why Ground Fault Detection and Protection?
Prevent power supply current from straying outside magnet
Can lead to equipment damage or fire
Current read by power supply transductor is not the magnet current
Ground current fluctuates causing erratic magnet current
The next few slides propose a ground fault detection and protection system.
October 14, 2005

11. October 14, 2005

12. October 14, 2005

13. Dataforth DSCA31-06 Signal Conditioner
October 14, 2005

14. October 14, 2005

15. October 14, 2005

16. October 14, 2005

17. Dataforth Signal Conditioner DSCA31-06 $150
Item
Quantity
Cost
Resistor, 100 ohm 3
$10
Dataforth Signal Conditioner DSCA31-06
$150
IDEC
Smart Relay Starter Kit FLIC-H12RCE
Analog Expansion Module FL1B-J2B2
Digital Expansion Module FL1B-MO8B2R2
Memory Cartridge FLIC-PM3
Power Supply 24VDC, 30W PS5R-SC24 1
$200
$100
$70
$25
$75
DIN Rail, Miscellaneous Parts
1 Lot
$50
Total Material Cost
$685
October 14, 2005

18. All areas excluding Injector, LINAC Sector 21, BC1
New Power Supplies
All areas excluding Injector, LINAC Sector 21, BC1
October 14, 2005

19. October 14, 2005

20. Not an uninterruptible system “Standard” power supplies No hot-swap
Bulk-fed or off-line PS
Redundant control system
Low switch stress
Lower cost than redundant modules
October 14, 2005

21. END !!!
October 14, 2005