1. LIGO-G1000552-V8 1 aLIGO DC Power Distribution Contents

2. 2 CDS Racks and Rooms Front End Computer Timing Master 18VDC18VDC I/O Extension Timing Fanout 24VDC24VDC Chassis DC Power AC VoltageAC Voltage Chassis Mass Storage Room (MSR) Operator Control Room (OCR) CDS Electronics Room (CER)CER Laser Diode Room (LDR)LDR CDS Power Room (CPR)CPR CDS Rack Installations Field I/O Cables Timing Distribution Cables DC Power Racks Field Satellite Racks Subsystem Electronics Racks Front End Racks Fiber Optic Cables DC Extension Cables Field DC Extension Cords Computer Users Room (CUR) Racks and Rooms (RAR) LIGO-G1000552-V8

3. CDS Electronics Room (CER) Rack Layout 3 2feet2feet Each Rack is 39” Deep and 24” Wide 2 feet L1-PEM-C1 L1-SUS-C1 L1-SUS-C2 L1-SUS-C3 L1-SUS-C4 L1-SUS-C5 L1-SUS-C6 L1-SUS-C7 L1-SUS-C8 L1-SEI-C1 Front L1-SEI-C2 L1-AOS-C1L1-SEI-C3L1-SEI-C4 L1-SEI-C5 L1-SEI-C6 LIGO-G1000552-V8 L1-UNK-C3 L1-UNK-C2 L1-UNK-C1 L1-ISC-C1 L1-ISC-C2 L1-ISC-C3 L1-PSL-C1 CDS Electronics Room (CER) L1-UNK-C4 L1-UNK-C5 SUS ITMX, ITMY, and BS Rack 1 SUS ITM, FM, and BS Rack 2 SUS ITM, FM, and BS Rack 1 SUS HAM2 Rack 1 SUS HAM2 Rack 2 SUS ITMX, ITMY, and BS Rack 2 SUS HAM5 and HAM6 Rack 1 SUS HAM5 and HAM6 Rack 2 ISC LVEA Rack 1 ISC LVEA Rack 2 ISC LVEA Rack 3 PSL Rack 1 PEM, DAQ Rack 1 AOS Rack 1 Front SEI Rack 1 SEI Rack 2SEI Rack 3 SEI Rack 4SEI Rack 5 SEI Rack 6

4. 4 LLO LDR – Rack Layout 2feet2feet Each Rack is 39” Deep and 24” Wide 2 feet Laser Diode Room (LDR) Changing Room 480V Distribution Panel 208V Distribution Panel DC Supplies 2feet2feet Front No posts 208V Distribution Panel 208V Distribution Panel New Transformer and Distribution Panel? L1-VDC-C5 L1-VDC-C6 L1-VDC-C1 L1-VDC-C2 L1-VDC-C3 L1-VDC-C4 LDR Chiller L1-LDR-C2 L1-LDR-C1 LIGO-G1000552-V8 << CDS Rack Installations CDS Power Room (CPR)CPR

5. 2feet2feet Each Rack is 39” Deep and 24” Wide 2 feet Laser Diode Room (LDR) Changing Room 480V Distribution Panel 208V Distribution Panel DC Supplies 2feet2feet Front 208V Distribution Panel 208V Distribution Panel New Transformer and Distribution Panel? L1-VDC-C5 L1-VDC-C6 L1-VDC-C1 L1-VDC-C2 L1-VDC-C3 L1-VDC-C4 LDR Chiller L1-LDR-C2 L1-LDR-C1 5 LLO CDS Power Room (CPR) – Rack Layout LIGO-G1000552-V8 << CDS Rack Installations CDS Power Room (CPR)CPR

6. 6 DC Power Rack Kepco JQE ±24@20A Kepco JQE ±18@20A Kepco JQE ±24@20A Kepco JQE ±18@20A Kepco JQE ±24@20A Kepco JQE ±18@20A Kepco JQE ±24@20A Kepco JQE ±18@20A LIGO-G1000552-V8 Kepco JQE ±24@20A Kepco JQE ±18@20A Kepco JQE ±24@20A Kepco JQE ±18@20A Kepco JQE DC Power Rack – VAC Wiring 12 @ 125V, 20A Circuits per Rack

7. 7 LIGO-G1000552-V8 L1-VDC-C1 Power Racks – Required Supplies L1-SUS-C2 L1-SUS-C1 L1-SUS-C2 L1-SUS-C3 L1-SUS-C4 L1-SUS-C5 L1-SUS-C6 L1-SUS-C7 L1-SUS-C8 L1-VDC-C1 Power Rack Kepco JQE Style L1-SUS-C3 L1-SUS-C1 L1-SUS-C2 L1-SUS-C3 L1-SUS-C4 L1-SUS-C8 L1-SUS-C5 L1-SUS-C6 L1-SUS-C7 L1-SUS-C8 AB L1-SUS-C3 L1-SUS-C1 L1-SUS-C2 L1-SUS-C3 L1-SUS-C4 L1-SUS-C8 L1-SUS-C5 L1-SUS-C6 L1-SUS-C7 L1-SUS-C8 L1-SUS-C2 L1-SUS-C1 L1-SUS-C2 L1-SUS-C3 L1-SUS-C4 L1-SUS-C5 L1-SUS-C6 L1-SUS-C7 L1-SUS-C8 L1-VDC-C1 Power Rack Kepco JQE Style BA

8. Standard DC Power Connecting Scheme 88 LIGO-G1000552-V8

9. Chassis Standard DC Power Connecting Scheme - Overview Chassis Subsystem Electronics Rack DC Power Supply Rack PP P P S S S S S S S SS P P S S AC X 24 9 D1002189 Opt 02 24VDC Power Strip D1002189 Opt 01 18VDC Power Strips Power Supplies Pigtail Cords D1002475 Pigtail Cords 9 S S S S S S S D1002209 Option 02 Extension Cords D1002209 Option 01 Extension Cords LIGO-G1000552-V8 D1002475 Pigtail Cords AC Customized Extension Cables

10. Standard DC Power Strip 10 LIGO-G1000552-V8 D1002189 Opt 02 24VDC Power Strip D1002189 Opt 01 18VDC Power Strips D1100034 Opt 02 24VDC Power Strip

11. Custom-Length DC Power Extension Cables LIGO-G1000552-V8 11 Plus Return Minus 18 VDC A1 A2 A3 Plus Return Minus 24 VDC A1 A2 A3 +/-18VDC 20A Custom length cables, metal backshells and screws on both connectors P P S S Orange 12/3 25A McMaster-Carr 7394K13 Cable Conec 3003W3PXX99A10X Connector Conec 3003W3SXX99A10X Connector Conec 131C11029X Male Contacts Conec 132C11029X Female Contacts Digi-Key 17E-1657-15-ND Backshells +/-24VDC 20A Yellow 12/3 25A McMaster-Carr 8046K16 Cable Conec 303W3CPXX99A10X Connector Conec 303W3CSXX99A10X Connector Conec 131C11029X Male Contacts Conec 132C11029X Female Contacts Digi-Key 17E-1657-15-ND Backshells

12. Standard DC Power Extension Cords LIGO-G1000552-V8 12 P S P S Standard 3-foot cords, backshells and screws on both connectors +/- 24VDC 10A +/- 18VDC 10A

13. Standard DC Power Pigtail Cords LIGO-G1000552-V8 13 Standard 3-foot length cables and backshells – Plug and Socket Options P P +/- 24VDC 20A +/- 18VDC 20A S S

14. Standard DC Power Supply Wiring Scheme + + – – White – Positive – A1 Black – Common – A2 Green – Negative – A3 ‘Negative’ power supply ‘Positive’ power supply 14 SS LIGO-G1000552-V8 1. Only connect two power supplies that are sourcing the same voltages. 2. Use the correct voltage option of D1002475 DC Power Pigtail Socket Cord.

15. DC Power Supply Voltage and Current Monitor LIGO-G1000552-V8 15 PinSignal 1Voltage + 6Voltage – (GND) 2Current + 7Current – (GND) 3N/A 8N/A 4N/A 9N/A 5N/A Power Supply * Provide a 0-10V full-scale Voltage signal * Provide a 0-10V full-scale Current signal * Present both signals on a DB9 female bulkhead connector mounted somewhere on the supply as follows:

16. DC Discussions – We agreed that … LIGO-G1000552-V8 16 I/O Extenders will be powered separately from Electronics Chasses. This will permit the electronics to be turned off and on without interference to the I/O Extenders. 3-conductor extension cables will be used between the DC Power Racks and the Electronics Racks. This will provide one return per set (+/-) of supplies. All DC Power Supply returns will be tied together (bonded) at the DC Power Rack to avoid ground loops. DC Power Racks will all be tied to technical ground. Shielding DC extension cables (from DC Power Racks to Electronics Racks) is not necessary. Non-standard (18/24) voltages should be a multi-conductor cable solution similar to this solution. See DC jacket colors for voltage conventions. Remote sensing will not be used. The length of cable is too great for effective control.

17. DC Wiring Color Convention LIGO-G1000552-V8 17 Either single conductor wiring or multi-conductor cabling may be called for. These charts show the DC color code for either the single conductor wiring or the multi-conductor cabling.

18. Custom DC Power Extension Cables – Components LIGO-G1000552-V8 18 Connectors Custom length cables, metal backshells and screws on both connectors Plug Connector Conec 3003W3PXX99A10X Conec 131C11029X Male Contacts Socket Connector Conec 3003W3SXX99A10X Conec 132C11029X Female Contacts 5VDC @13AWhite16/3McMaster-Carr 7589K11 12VDC @13AGreen16/4McMaster-Carr 7673K63 18VDC @25AOrange12/3McMaster-Carr 7394K13 18VDC @13AOrange16/3McMaster-Carr 7394K33 24VDC @25AYellow12/3McMaster-Carr 8046K16 24VDC @13AYellow16/3McMaster-Carr 8046K12 36VDC @13ABlack16/3McMaster-Carr 8157K64 >100VDC @13AGray(Marked)16/4McMaster-Carr 9936K26 Cables Backshells All Plug and Socket Backshells Digi-Key 17E-1657-15ND

19. Custom DC Extension Cable - BOM LIGO-G1000552-V8 19 +/- 18VDC 20A (Used between DC Power Racks and Electronics Racks) 18V 20A Custom Extension Cables ItemPart TypeDescriptionDesignatorManufacturerSupplierSupplier Part NumberQuantityUnit 1CableOrange SJTW AWG 12/3 25A Stranded McMaster-Carr7394K13100ft 2Connector Shell3W3C Male Combo Shell - No Power Conec 3003W3PXX99A10X1@ 3Connector Contact20 AMP Male Power Contact Conec 131C11029X3@ 4Connector Shell3W3C Female Combo Shell - No Power Conec 3003W3SXX99A10X1@ 5Connector Contact20 AMP Female Power Contact Conec 132C11029X3@ 6BackshellConnector Backshell DB15 DIE CAST ZINC AmphenolDigi-Key17E-1657-15-ND2@ 7Standoff 4-40 D-Sub Hardware Hex Standoffs,.232 inch Hex L-comSDH2@ 8Heat ShrinkHeat Shrink InsulationLab Supplies 1@ P S Orange 12/3 25A McMaster-Carr 7394K13 Cable Conec 3003W3PXX99A10X Connector Conec 3003W3SXX99A10X Connector Conec 131C11029X Male Contacts Conec 132C11029X Female Contacts Digi-Key 17E-1657-15-ND Backshells L-Com SDH Standoff Custom length Cables, backshells and screws on both connectors, standoffs on socket

20. Custom DC Extension Cable - BOM LIGO-G1000552-V8 20 +/- 24VDC 20A (Used between DC Power Racks and Electronics Racks) 24V 20A Custom Extension Cables ItemPart TypeDescriptionDesignatorManufacturerSupplierSupplier Part NumberQuantityUnit 1CableYellow SJEOOW AWG 12/3 25A Stranded McMaster-Carr8046K16100ft 2Connector Shell3W3C Male Combo Shell - No Power Conec 303W3CPXX99A10X1@ 3Connector Contact20 AMP Male Power Contact Conec 131C11029X3@ 4Connector Shell3W3C Female Combo Shell - No Power Conec 303W3CSXX99A10X1@ 5Connector Contact20 AMP Female Power Contact Conec 132C11029X3@ 6BackshellConnector Backshell DB15 DIE CAST ZINC AmphenolDigi-Key17E-1657-15-ND2@ 7Standoff 4-40 D-Sub Hardware Hex Standoffs,.232 inch Hex L-comSDH2@ 8Heat ShrinkHeat Shrink InsulationLab Supplies 1@ P S Yellow 12/3 25A McMaster-Carr 8046K16 Cable Conec 303WC3PXX99A10X Connector Conec 303WC3SXX99A10X Connector Conec 131C11029X Male Contacts Conec 132C11029X Female Contacts Digi-Key 17E-1657-15-ND Backshells L-Com SDH Standoff Custom length Cables, backshells and screws on both connectors, standoffs on socket

21. LIGO-G1000552-V8 21 Custom 24VDC Adapter P P +/- 24VDC 10A +/- 24VDC 10A (Used between Old eLIGO 24VDC Connector and New Standard) New 24VDC Standard Old eLIGO 24VDC Standard This adapter is basically a 4” M-M cable that is intended to be attached to a chassis that does not conform to the new connector standard for 24VDC.

22. LIGO-G1000552-V8 22 Custom Socket Pigtail Cables Used between DC Power Supplies and Custom Extension Cables +/- 12VDC 10A This is a sample custom socket pigtail for use on a +/-12VDC set of power supplies. It really is a dark green cable jacket.

23. LIGO-G1000552-V8 23 24VDC Adapter – IO Chassis to Power Strip New 24VDC Power Supply 24VDC Spades to Plug Adapter Adapter construction This adapter is basically a 3.5” +/- 24VDC 10A Plug Pigtail that is intended to be attached to the 24VDC input screws of IO Chasses. It will connect to a +/-24VDC Extension Cord.