Coordination Study 03-18-22.pdf

Togus VA Medical Center Electrical Distribution Upgrade

Protective Device Coordination Study

Prepared for:

Bussco Inc.

25 Franklin St.

Malden, MA 02148

Prepared by:

Electrical Consultants, Inc.

1 Faraday Drive Cumberland, Maine 04021

03/18/2022 Revision 2 – 200-XR Panel Upgrade

Togus VA Medical Center Rev 2 – 200-XR Panel Upgrade Protective Device Coordination Study March 18, 2022

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 2 of 126

References NFPA 70 – National Electrical Code 2020 Edition Togus Electrical Distribution System Upgrades Drawing Set IEEE 141 – IEEE Recommended Practice for Electric Power Distribution for Industrial Plants IEEE-241 – Recommended Practice Electrical Systems in Commercial Buildings IEEE 242 – IEEE Recommended Practice for Protection and Coordination of Industrial and

Commercial Power Systems IEEE- 399 Recommended Practice for Industrial and Commercial Power Systems Analysis Existing Togus VA Power System Studies (Including Coordination Study) performed by Clark

Nexsen, Inc. from 2014 Togus VA Medical Center 12.47 kV Relay Settings Basis Documents o Togus_VA_Main-A_Eaton-EDR-5000_Settings_Basis o Togus_VA_Main-B_Eaton-EDR-5000_Settings_Basis o Togus_VA_Bus-Tie_Eaton-EDR-5000_Settings_Basis o Togus_VA_Feeder-A_Eaton-EDR-3000_Settings_Basis o Togus_VA_Feeder-B_Eaton-EDR-3000_Settings_Basis o Togus_VA_Feeder-C_Eaton-EDR-3000_Settings_Basis o Togus_VA_Feeder-D_Eaton-EDR-3000_Settings_Basis o Togus_VA_Feeder-E_Eaton-EDR-3000_Settings_Basis o Togus_VA_Feeder-F_Eaton-EDR-3000_Settings_Basis o Togus_VA_Feeder-G_Eaton-EDR-3000_Settings_Basis o Togus_VA_Feeder-H-(SPARE)_Eaton-EDR-3000_Settings_Basis

Revision History

Rev Description Date Developed By Reviewed By 1 2021 Distribution Upgrade 11/22/2021 L. Gaghan, ECI P. Shea, ECI 2 200-XR Panel Upgrade 03/18/2022 N. Szwez, ECI L. Gaghan, ECI

Document Notes:

For all time current curves, the titles for upstream device will be on the left and the titles for the downstream devices will be on the right.

All devices that coordinate across transformers (Ex. 480V Breaker Vs 208V Breaker) will be shown in the appendix corresponding to the high side device.

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Table of Contents

1. Introduction

2. Recommendations

3. Summary of Relay Settings

Appendix A Togus VA 12470V Phase Overcurrent Coordination

Appendix B Togus VA 12470V Ground Overcurrent Coordination

Appendix C Togus VA 480V Overcurrent Coordination

Appendix D Togus VA 208V Overcurrent Coordination

Appendix E SKM System Diagram

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1. Introduction Togus VA Medical Center is replacing the 12kV switchgear that receives incoming power from Central Maine Power (CMP) and distributes it to the 12kV step down transformers throughout the hospital. The switchgear consists of two Main Breakers. Main-A receives power from Circuit 216D1 fed from Cony Road and Main-B receives power from Circuit 207D2 fed from Blaire Road. The switchgear has a Bus-Tie Breaker that can be used to split the bus. Feeders A,B,C and H are on the Bus-A side of the Tie and Feeders D,E,F and G are on the Bus-B side of the Tie. All feeders are existing with the exception of Feeders G and H. Feeder G is a new feeder that supplies the new 12kV step down transformer T4.

Feeder H is a spare. PLC controls can put the switchgear into 3 types of operation:

1. Automatic Mode – One source active and the other closed with the Tie closed with an automatic transition between Source-A and Source-B.

a. Normal Operation – Source-A closed, Source-B open and Tie closed.

b. Upon Loss of Source-A – Source-A open, Source-B closed and Tie closed.

c. Upon Return of Source-A – Source-A closed, Source-B open and Tie closed.

2. Load Shed Mode – Load Shed Mode is manually initiated

d. Normal Operation – Source-A closed, Source-B closed and Tie opened.

e. Upon loss of either Source – The lost source is opened and the Tie is closed. Operation returns to Automatic mode.

3. Manual Mode – May be manually operated. However, hard wired interlocks are included in breaker close circuits to prevent Source-A and Source-B from being closed while the Bus-Tie is closed. The CMP sources are out of phase and are not permitted to be operated in a paralleled configuration.

Also included with the upgrade is the replacement of various 480V and 208V components throughout the hospital. These replacements include Motor Control Centers, Switchgear and Panels which will include new low voltage breakers as well as new conductors and new transformers. New 800kW Generator-10 and 400kW Generator-11 will also be installed and available to use for backup power.

Please reference the Togus Electrical Distribution System Upgrades Drawing Set for a complete break down of equipment to be upgraded. The equipment that is being upgraded is bolded in the drawing set and the equipment that is not upgraded will not be bolded.

ECI’s scope on this upgrade is to develop the 12kV protective relay settings in the new switchgear, perform a protective device coordination study and an Arc Flash Hazard Analysis (AFHA). As part of this, the existing Togus VA SKM model is to be updated to reflect the changes in the upgrade. An up-to-date utility contribution from Central Maine Power will also be included in the model. Evaluation of existing equipment that is not being upgraded is not included. Please reference the Existing Togus VA Power System Studies and Coordination Study performed by Clark Nexsen, Inc. from 2014 for Coordination and AFHA of equipment not included in this upgrade.

This report will document the coordination for the new 12kV protective relay settings as well as the coordination for the newly installed low voltage breakers. For low voltage breakers with adjustable time characteristics, set points will be provided to best coordinate with upstream and downstream devices.

The pickups for low voltage breakers reflect the values shown on the Togus Electrical Distribution

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System Upgrades Drawing Set. The pickups for low voltage breakers do not fall under ECI’s scope.

Criteria used to select the 12kV protective relay settings are documented in the respective Relay Settings Basis Documents. Please reference the Settings Basis Documents for information regarding the criteria used to determine relay settings. The AFHA is documented in a separate report, please reference the Togus VA Arc Flash Hazard Analysis report for Arc Flash information.

Ideal coordination is achieved when each protective device is able trip for faults on the equipment is it intended to protect and does not trip for either normal conditions or faults on equipment that is meant to be protected by other devices. This selective tripping is essential in minimizing the number of circuits that are deenergized as well as the duration of time that they are deenergized. Coordination is achieved through the selection of appropriate time delays to allow the protective device to operate before upstream devices for faults on its own equipment but allow downstream devices to operate for faults on their equipment. The time difference between devices is typically 300ms for ideal coordination. This time interval is included to overcome any delays, errors or tolerances from any of the devices/equipment used for protection whether they be current transformers, relays, breakers, fuses, or the data provided from the Short Circuit Model (SKM in this Case). Due to the nature of the Togus VA system, ideal coordination was not achieved for all equipment. The best coordination possible was provided in all circumstances. Please reference the Overcurrent Coordination Appendices for the time current curves displaying coordination between all devices included in this study.

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2. Recommendations Medium Voltage Switchgear 246 Bus-A and Bus-B Protection

Central Maine Power (CMP) reclosers fast curve can operate as fast as 100ms for Togus switchgear faults and as fast as 400ms for CMP recloser slow curves. The Main Breakers do not use instantaneous overcurrent protection to avoid deenergizing the Switchgear in the event of a Feeder Fault. The required delay on Main Breakers time overcurrent element meant coordination with the CMP fast curves was not practical. Because of this, the CMP reclosers can trip and reclose twice for Togus switchgear faults before switching to the slow curve that will coordinate with Togus Main Breakers.

The design for this upgrade did not include provisions for bus protection. It is recommended that Togus VA consider the addition of bus protection in order to both improve reliability by eliminating mis coordination with the CMP recloser fast curves and to improve safety by reducing incident energy for personal that may be working on MV-SWGR-246. The following bus protection methods are recommended.

Bus Differential Protection (87B): Either a low or high impedance bus differential scheme could be implemented for MV-SWGR-246 BUS-A and BUS-B. This scheme would require the use of current transformers on side of the breakers non-adjacent to the bus. This scheme would require two bus protection relays (Bus-A and Bus-B) and the CT’s used for protection would need to be evaluated for performance under worse case fault scenarios.

Fast Bus Scheme: A fast bus scheme operates on the principal that for a bus fault the Main Breaker will experience fault current, but the Feeder relays will not. Feeder Relays will send a blocking signal to the Main Relays for fault current on the Feeders and the Main Relays will be given a definite time overcurrent element with a short time delay to allow the Feeder relay’s contacts to close. This definite time overcurrent element will be blocked from operating if any of the Feeders experience fault current.

This scheme would require relay outputs to be wired from the Feeders to the Main and Bus Tie relays.

Protection settings would also need to be upgraded to incorporate the scheme.

Arc Flash Detection Relays: Arc flash detection relays operate when a sudden change in light is accompanied by a sudden increase in current. To implement this scheme Arc Flash Detection Relays would need to be installed in each switchgear cabinet.

Panelboard P-MCC4 Breaker 200E-RF-10

On the drawing set this breaker is shown to be 20A and in the existing model this circuit feeds additional circuits protected by 30A circuit breakers. This breaker and downstream breakers should be evaluated to prevent nuisance tripping.

Generator 9 Circuit Breaker

The generator 9 circuit breaker is set to trip at 600A. This is set more sensitively than the downstream Switchboard 10 Main Breaker connected to Generator 9 and the breaker used to feed Switchboard EMDP-206. For faults on the feeder to EMDP-206 Generator 9 could trip offline and deenergize the

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 7 of 126 other circuits off Switchboard Generator 10. This should be considered when feeding Switchboard Generator 10 from Generator 9.

Switchboard N-1A-DP Breaker 202-N-2A

On the drawing set this breaker is shown to be 100A and feeds panel N-2A which has a main breaker rated for 225A. Loading on this circuit should be evaluated and verified Breaker 202-N-2A will not trip because Panel N-2A is intended to carry 225A of load. If Breaker 202-N-2A is replaced with a larger breaker, the conductor that feeds Panel N-2A needs to also be evaluated

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3. Summary of Relay Settings

This section of the study includes a summary of all of the new protective device settings. This includes the new 12kV protective relay settings as well as the new 480V and 208V low voltage circuit breakers. Fuses, existing settings, and existing circuit breakers are not included.

12kV Protective Relay Overcurrent Settings

Description Device Model

CTR

Pickup (A Pri)

Time Dial Curve Inst Pickup

(A Pri)

Inst Delay (Seconds)

Additional Information

MV-Main-A 51 Phase EDR-5000 60 348.0 0.42 ANSI EINV NA NA

MV-Main-B 51 Phase EDR-5000 60 348.0 0.42 ANSI EINV NA NA

MV-Bus-Tie 51 Phase EDR-5000 60 300.0 0.40 ANSI EINV NA NA

MV-Feeder-A 50/51 Phase EDR-3000 40 200.0 1.25 ANSI EINV 648.0 0.00

MV-Feeder-B 50/51 Phase EDR-3000 40 224.0 1.25 ANSI EINV 596.0 0.00

MV-Feeder-C 50/51 Phase EDR-3000 40 200.0 1.00 ANSI EINV 1292.0 0.00

MV-Feeder-D 50/51 Phase EDR-3000 30 225.0 0.90 ANSI EINV 628.5 0.00

MV-Feeder-E 50/51 Phase EDR-3000 30 225.0 0.90 ANSI EINV 804.0 0.00

MV-Feeder-F 50/51 Phase EDR-3000 30 249.0 0.75 ANSI EINV 775.5 0.00

MV-Feeder-G 50/51 Phase EDR-3000 30 249.0 0.75 ANSI EINV 808.5 0.00

MV-Feeder-H 50/51 Phase (Spare) EDR-3000 30 249.0 0.75 ANSI EINV 1291.5 0.00

MV-Main-A 51 Ground EDR-5000 60 60.0 5.00 ANSI MINV NA NA

MV-Main-B 51 Ground EDR-5000 60 60.0 5.00 ANSI MINV NA NA

MV-Bus-Tie 51 Ground EDR-5000 60 54.0 4.00 ANSI MINV NA NA

MV-Feeder-A 50/51 Ground EDR-3000 40 48.0 3.00 ANSI MINV 270.0 0.00

MV-Feeder-B 50/51 Ground EDR-3000 40 48.0 3.00 ANSI MINV 270.0 0.00

MV-Feeder-C 50/51 Ground EDR-3000 40 48.0 3.00 ANSI MINV 270.0 0.00

MV-Feeder-D 50/51 Ground EDR-3000 30 48.0 3.00 ANSI MINV 270.0 0.00

MV-Feeder-E 50/51 Ground EDR-3000 30 48.0 3.00 ANSI MINV 270.0 0.00

MV-Feeder-F 50/51 Ground EDR-3000 30 48.0 3.00 ANSI MINV 270.0 0.00

MV-Feeder-G 50/51 Ground EDR-3000 30 48.0 3.00 ANSI MINV 270.0 0.00

MV-Feeder-H 50/51 Ground (Spare) EDR-3000 30 48.0 3.00 ANSI MINV 270.0 0.00

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480V Circuit Breakers

Description Panel / Building Breaker

Type Pickup Long (IR - Amps)

Time Long (tR - s)

Pickup Short (ISD - times IR)

Time Short (tSD - ms)

Instantaneous (Amps)

Additional Information

MDP-MRI-CB MDP-MRI / 200 NGH H - 1200 7 3 120 Fixed - 14400 Adjustable

200-XR-CB MDP-MRI / 200 L630H H - 600 15 5 Inst Fixed - 7200 Adjustable

200-XRAY 1-CB 200-XR/200 FD6 Trip - 150 NA NA NA NA Non-Adjustable

200-XRAY 2-CB 200-XR/200 NGB Trip - 70 NA NA NA NA Non-Adjustable

200-XRAY 3-CB 200-XR/200 NGB Trip - 30 NA NA NA NA Non-Adjustable

200-XRAY 4-CB 200-XR/200 NGB Trip - 100 NA NA NA NA Non-Adjustable

200-XRAY 5-CB 200-XR/200 NGB Trip - 100 NA NA NA NA Non-Adjustable

200-XRAY 5(B)-CB 200-XR/200 NGB Trip - 30 NA NA NA NA Non-Adjustable

200-MRI-MACHINE-CB MDP-MRI / 200 HFD Trip - 125 NA NA NA NA Non-Adjustable

200-AHU #20-CB MDP-MRI / 200 HFD Trip - 125 NA NA NA NA Non-Adjustable

200-MP1-CB MDP-MRI / 200 HFD Trip - 125 NA NA NA NA Non-Adjustable

200-MP-CB MDP-MRI / 200 HFD Trip - 125 NA NA NA NA Non-Adjustable

200E-MCC-4-MAIN-CB P-MCC4 / 200E MDL B-400 4 6 120 Fixed - 6800 Adjustable

200E-EF-3-CB P-MCC4 / 200E HFD Trip - 20 NA NA NA NA Non-Adjustable

200E-AH-10 SUPPLY-CB P-MCC4 / 200E HFD Trip - 70 NA NA NA NA Non-Adjustable

200E-RF-10-CB P-MCC4 / 200E HFD Trip - 20 NA NA NA NA Non-Adjustable

200E-AH-8-CB P-MCC4 / 200E HFD Trip - 50 NA NA NA NA Non-Adjustable

200E-RF-8-CB P-MCC4 / 200E HFD Trip - 20 NA NA NA NA Non-Adjustable

200E-P-11-CB P-MCC4 / 200E HFD Trip - 20 NA NA NA NA Non-Adjustable

200E-EF-21-CB MCC 2NE / 200E ED6 Trip - 10 NA NA NA NA Non-Adjustable

200E-EF-22-CB MCC 2NE / 200E ED6 Trip - 10 NA NA NA NA Non-Adjustable

200E-AH-6 SUPPLY FAN-CB MCC 2NE / 200E ED6 Trip - 50 NA NA NA NA Non-Adjustable

200E-EF-6-CB MCC 2NE / 200E ED6 Trip - 50 NA NA NA NA Non-Adjustable

203-XFMR-HS-CB NA / 203 HFD Trip - 150 NA NA NA NA Non-Adjustable

204-XFMR-HS-CB NA / 204 HFD Trip - 200 NA NA NA NA Non-Adjustable

210-480V EMERG FEED CB NA / 210 HFD Trip - 100 NA NA NA NA Non-Adjustable

232-XFMR-HS-CB NA / 232 HFD Trip - 100 NA NA NA NA Non-Adjustable

235-ECB-XFMR NA / 235 HFD Trip - 70 NA NA NA NA Non-Adjustable

248- XFMR-HS-CB NA / 248 HJD Trip - 250 NA NA NA Adjustable -

Inst = 5 to 10 times Breaker Rating.

Individual pole adjustment

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206-BYPASS-ATS-N-CB MSB / 206 MDL H-800 2 2 Inst Fixed - 6800 Adjustable

206-T-206-CRIT-N-CB MSB / 206 SG 150 2 9 4 Adjustable - 975 Adjustable. Existing breaker, setpoints have changed.

206-BYPASS-ATS-EQUIP-E-

CB

NA / 206 MDL H-800 2 2 Inst Fixed - 6800 Adjustable

P-206-EQUIP-MAIN-CB MCC P-206-EQUIP / 206 MDL H-800 2 2 Inst Fixed - 6800 Adjustable

206-HP-3-CB MCC P-206-EQUIP / 206 HKD C-225 2 10 Inst Fixed - 4000 Adjustable

206-HP-2-CB MCC P-206-EQUIP / 206 HKD C-225 2 8 Inst Fixed - 4000 Adjustable

206-CH-1-CB MCC P-206-EQUIP / 206 HKD H-400 4 3 Inst Fixed - 4000 Adjustable

244-ATS-N-CB SWBD-GEN 9 / 244 NGH H - 1200 2 2 Inst Fixed - 14400 Adjustable

244-G9-SWBD-GEN-10-CB SWBD-GEN 10 / 244 SBS616 1.0 - 1200 4 2.5 200

Adjustable -

12000 Inst = 2 to 10 times Breaker Plug of

244-GEN-10-CB SWBD-GEN 10 / 244 SBS616 1.0 - 1600 2 2.5 200

Adjustable -

16000 Inst = 2 to 10 times Breaker Plug of

244-TEMP-G10-CB SWBD-GEN 10 / 244 SBS616 1.0 - 1600 2 2.5 200 Adjustable - 16000

Inst = 2 to 10 times Breaker Plug of

244-XFMR-203-CB SWBD-GEN 10 / 244 HJD Trip - 150 NA NA NA Adjustable -

Inst = 5 to 10 times Breaker Rating of 250. Individual pole adjustment

244-XFMR-204-CB SWBD-GEN 10 / 244 HFD Trip - 200 NA NA NA NA Non-Adjustable

244-XFMR-205-CB SWBD-GEN 10 / 244 HKD E-300 20 12 120 Fixed - 4000 Adjustable

244-EMDP-206-MAIN-CB SWBD-GEN 10 / 244 NGH E - 800 4 3 120 Fixed - 14400 Adjustable

244-XFMR-232-CB SWBD-GEN 10 / 244 HJD Trip - 100 NA NA NA Adjustable -

Inst = 5 to 10 times Breaker Rating of 250. Individual pole adjustment

244-BYPASS-ATS-EQUIP-E-

CB EDMP-206 / 244 HMDL H-800 2 2 Inst Fixed - 6800 Adjustable

244-T206-CRIT-CB EDMP-206 / 244 HFD Trip - 225 NA NA NA NA Non-Adjustable

244-T206-LS-CB EDMP-206 / 244 HFD Trip - 225 NA NA NA NA Non-Adjustable

210-GEN-11-CB GEN-11 / 210 SBS616 1.0 - 800 2 2 100

Adjustable -

Inst = 2 to 10 times Breaker Plug of

210-GEN-11-SWBD-CB SWBD-GEN-11 / 210 SBS616 1.0 - 800 2 2 100 Adjustable -

Inst = 2 to 10 times Breaker Plug of

210-TEMP-G11-CB SWBD-GEN-11 / 210 SBS616 1.0 - 800 2 2 100

Adjustable -

Inst = 2 to 10 times Breaker Plug of

248-ECB-XFMR-CB SWBD-GEN-11 / 210 HKD H-250 15 5 Inst Fixed - 4000 Adjustable

240- XFMR-HS-CB SWBD-GEN-11 / 210 HFD Trip - 40 NA NA NA NA Non-Adjustable

235- XFMR-HS-CB SWBD-GEN-11 / 210 HFD Trip - 70 NA NA NA NA Non-Adjustable

210-XFMR-HS-CB SWBD-GEN-11 / 210 HFD Trip - 100 NA NA NA NA Non-Adjustable

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480V Circuit Breakers

Description Panel / Building Breaker

Type Pickup Long (IR - Amps)

Time Long (tR - s)

Pickup Short (ISD - times IR)

Time Short (tSD - ms)

Instantaneous (Amps)

Additional Information

200-ATS-LS-N-CB SWBD-A / 200 HKD Trip - 400 NA NA NA Adjustable -

Inst = 5 to 10 times Breaker Rating of 400

EMPD-2000-LS MAIN CB EMPD-2000-LS / 200 DK Trip - 400 NA NA NA Adjustable -

Inst = 5 to 10 times Breaker Rating of 400

200-UPS-2-CB NA / 200 HFD Trip - 200 NA NA NA NA Non-Adjustable

200-ATS-LS-E-CB E-2 / 200 HKD Trip - 400 NA NA NA Adjustable -

Inst = 5 to 10 times Breaker Rating of 400

202-N-1A-DP-CB N-1A-DP / 202 NGS H - 1200 2 5 300 Fixed - 14400 Adjustable

202-N-1E-CB N-1A-DP / 202 KD F - 200 15 12 120 Fixed - 4400 Adjustable

202-N-1B-CB N-1A-DP / 202 KD F - 200 15 12 120 Fixed - 4400 Adjustable

202-ELEVATOR-CB N-1A-DP / 202 HFD Trip - 40 NA NA NA NA Non-Adjustable

202-N-2A-CB N-1A-DP / 202 HFD Trip - 100 NA NA NA NA Non-Adjustable

202-N-1D-CB N-1A-DP / 202 FD Trip - 100 NA NA NA NA Non-Adjustable

202-DUST COLLECTOR-CB N-1A-DP / 202 KD F - 200 15 12 120 Fixed - 4400 Adjustable

202-N-2A-MB N-2A / 202 EDB Trip - 200 NA NA NA NA Non-Adjustable

203-ECB-208V EMERG FEED NA / 203 HFD Trip - 225 NA NA NA NA Non-Adjustable

204-ECB-208V EMERGENCY

FEED NA / 204 HKD H-400 2 8 Inst Fixed - 4000 Adjustable

206-BYPASS-ATS-CRIT-E-CB NA / 206 HFD Trip - 225 NA NA NA NA Non-Adjustable

206-BYPASS-ATS-CRIT-N-CB NA / 206 HFD Trip - 225 NA NA NA NA Non-Adjustable

206-CRIT-MB P-206-CRIT / 206 JD Trip - 225 NA NA NA Adjustable -

1125 Inst = 5 to 10 times trip setting of 25

206-LP3B-CR-CB P-206-CRIT / 206 EDS Trip - 150 NA NA NA NA Non-Adjustable

206-LP3A-CR-CB P-206-CRIT / 206 EDS Trip - 150 NA NA NA NA Non-Adjustable

206-BYPASS-ATS-LS-E-CB NA / 206 HFD Trip - 225 NA NA NA NA Non-Adjustable

210-ECB-208V EMERG FEED NA / 210 HFD Trip - 150 NA NA NA NA Non-Adjustable

210-G11-PANEL-CB E101A / 210 HFD Trip - 60 NA NA NA NA Non-Adjustable

232-ECB-260A ATS-LS-CB NA / 232 HFD Trip - 150 NA NA NA NA Non-Adjustable

235-ECB-208V EMERG FEED NA / 235 HFD Trip - 100 NA NA NA NA Non-Adjustable

235-MDP-MB MDP / 235 LGE H - 600 4 7 Inst Fixed - 7200 Adjustable

235-ATS-CB MDP / 235 EDS Trip - 150 NA NA NA NA Non-Adjustable

235-PC1-CB MDP / 235 EDS Trip - 225 NA NA NA NA Non-Adjustable

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235-N-GA-CB MDP / 235 EDS Trip - 100 NA NA NA NA Non-Adjustable

240-ECB-208 EMERG FEED NA / 240 HFD Trip - 50 NA NA NA NA Non-Adjustable

248-ATS-E-CB NA / 248 HMDL Trip - 500 7 4 Inst Fixed - 6800 Adjustable

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Appendix A Togus VA 12470V Phase Overcurrent Coordination

MV-216D1 50/51 Phase Vs MV-Main-A 51 Phase Vs MV-Main-A Fuse

The Togus Main-A Phase protection is set to operate before the CMP recloser slow Phase curve. The time interval is very short due to tight downstream coordination with Main-A. It is possible that both the Main Breaker and the CMP recloser will operate for a Togus bus fault. In this instance the recloser will reclose and the Togus Main-A breaker will not.

MV-MAIN-A-51 - Phase

2228 A

MV-CBL-CONY

MV-216D1-50/51-SLOW - Phase MV-216D1-50/51-FAST - Phase

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-261D1-50/51 PH VS MV-MAIN-A-51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at MV-246-SWGR-A

T

IM

E

IN

S E

C O

N D

S

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-A-51 - Phase

MV-CBL-CONY

KEARNEY

T Fuse Links 200T Trip 200.0 A Settings Phase

200.0 Amps

MV-CONY-FUSE

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings Phase 51P1P(0.1-3.20 x CTR) 0.56 (560A) B (117) 1

MV-216D1-50/51-SLOW - Phase

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings Phase 51P1P(0.1-3.20 x CTR) 0.56 (560A) R (105) 1

MV-216D1-50/51-FAST - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-A-51 - Phase

MV-CBL-CONY

KEARNEY

T Fuse Links 200T Trip 200.0 A Settings Phase

200.0 Amps

MV-CONY-FUSE

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings Phase 51P1P(0.1-3.20 x CTR) 0.56 (560A) B (117) 1

MV-216D1-50/51-SLOW - Phase

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings Phase 51P1P(0.1-3.20 x CTR) 0.56 (560A) R (105) 1

MV-216D1-50/51-FAST - Phase

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MV-207D2 50/51 Phase Vs MV-Main-B 51 Phase Vs MV-Main-B Fuse

The Togus Main-B Phase protection is set to operate before the CMP recloser slow Phase curve. The time interval is very short due to tight downstream coordination with Main-B. It is possible that both the Main Breaker and the CMP recloser will operate for a Togus bus fault. In this instance the recloser will reclose and the Togus Main-A breaker will not.

MV-207D2-50/51-SLOW - Phase MV-207D2-50/51-FAST - Phase

MV-CBL-BLAIRE

MV-MAIN-B-51 - Phase

1146 A

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-207D2-50/51 PH VS MV-MAIN-B-51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at MV-246-SWGR-B

T

IM

E

IN

S E

C O

N D

S

MV-207D2-50/51-SLOW - Phase

MV-BLAIRE-FUSE

MV-207D2-50/51-FAST - Phase

MV-CBL-BLAIRE

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings Phase 51P1P(0.1-3.20 x CTR) 0.56 (560A) B (117) 1

KEARNEY

T Fuse Links 200T Trip 200.0 A Settings Phase

200.0 Amps

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings Phase 51P1P(0.1-3.20 x CTR) 0.56 (560A) R (105) 1

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

MV-207D2-50/51-SLOW - Phase

MV-BLAIRE-FUSE

MV-207D2-50/51-FAST - Phase

MV-CBL-BLAIRE

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings Phase 51P1P(0.1-3.20 x CTR) 0.56 (560A) B (117) 1

KEARNEY

T Fuse Links 200T Trip 200.0 A Settings Phase

200.0 Amps

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings Phase 51P1P(0.1-3.20 x CTR) 0.56 (560A) R (105) 1

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 16 of 126

MV-Main-A 51 Phase Vs MV-Bus-Tie 51 Phase

The Bus-Tie Phase protection is set to operate before the Main-A Phase protection. The time interval is shorter than preferred but is required due to Bus Tie coordination with downstream devices

MV-BUS-TIE-51 - Phase

2906 A*

MV-CBL-CONY

MV-MAIN-A-51 - Phase

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-MAIN-A-51 PH VS MV-BUS-TIE-51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-246-SWGR-B

T

IM

E

IN

S E

C O

N D

S

MV-BUS-TIE-51 - Phase

MV-CBL-CONY

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-A-51 - Phase

MV-BUS-TIE-51 - Phase

MV-CBL-CONY

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

MV-MAIN-A-51 - Phase

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 17 of 126

MV-Main-A 51 Phase Vs MV-Feeder-A 50/51 Phase

The Feeder-A Phase protection is set to operate before the Main-A Phase protection.

MV-CBL-FDR-A

MV-FDR-A-50/51 - Phase

3358 A

MV-MAIN-A-51 - Phase

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-MAIN-A-51 PH VS MV-FDR-A-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-BUS-T14-SW

T

IM

E

IN

S E

C O

N D

S

MV-CBL-FDR-A

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 3.24 (648A)

MV-FDR-A-50/51 - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-A-51 - Phase

MV-CBL-FDR-A

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 3.24 (648A)

MV-FDR-A-50/51 - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 18 of 126

MV-Main-A 51 Phase Vs MV-Feeder-B 50/51 Phase

The Feeder-B Phase protection is set to operate before the Main-A Phase protection.

MV-FDR-B-50/51 - Phase

3152 A

MV-MAIN-A-51 - Phase

MV-CBL-FDR-B

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-MAIN-A-51 PH VS MV-FDR-B-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-BUS-T16-SW

T

IM

E

IN

S E

C O

N D

S

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.12 (224A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 2.98 (596A)

MV-FDR-B-50/51 - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-A-51 - Phase

MV-CBL-FDR-B

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.12 (224A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 2.98 (596A)

MV-FDR-B-50/51 - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-CBL-FDR-B

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 19 of 126

MV-Main-A 51 Phase Vs MV-Feeder-C 50/51 Phase

The Feeder-C Phase protection is set to operate before the Main-A Phase protection.

MV-FDR-C-50/51 - Phase

2917 A

MV-MAIN-A-51 - Phase

MV-CBL-FDR-C

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-MAIN-A-51 PH VS MV-FDR-C-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-SWGR-C

T

IM

E

IN

S E

C O

N D

S

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1

50P[1], (0.02-40 x In) 6.46 (1292A)

MV-FDR-C-50/51 - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-A-51 - Phase

MV-CBL-FDR-C

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1

50P[1], (0.02-40 x In) 6.46 (1292A)

MV-FDR-C-50/51 - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-CBL-FDR-C

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 20 of 126

MV-Main-B 51 Phase Vs MV-Bus-Tie 51 Phase

The Bus-Tie Phase protection is set to operate before the Main-B Phase protection. The time interval is shorter than preferred but is required due to Bus Tie coordination with downstream devices. Note that for this scenario the Cony Road line is out of service and the Blaire Road line is in service.

MV-BUS-TIE-51 - Phase

1740 A

MV-MAIN-B-51 - Phase

MV-CBL-BLAIRE

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-MAIN-B-51 PH VS MV-BUS-TIE-51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at MV-246-SWGR-A

T

IM

E

IN

S E

C O

N D

S

MV-BUS-TIE-51 - Phase

MV-MAIN-B-51 - Phase

MV-CBL-BLAIRE

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-BUS-TIE-51 - Phase

MV-MAIN-B-51 - Phase

MV-CBL-BLAIRE

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 21 of 126

MV-Main-B 51 Phase Vs MV-Feeder-D 50/51 Phase

The Feeder-D Phase protection is set to operate before the Main-B Phase protection. Note that for this scenario the Cony Road line is out of service and the Blaire Road line is in service

MV-CBL-FDR-D-1

MV-FDR-D-50/51 - Phase

2018 A

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-MAIN-B-51 PH VS MV-FDR-D-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-200E-SWGR

T

IM

E

IN

S E

C O

N D

S

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

MV-CBL-FDR-D-1

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

50P[1], (0.02-40 x In) 4.19 (628.5A)

MV-FDR-D-50/51 - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

MV-CBL-FDR-D-1

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

50P[1], (0.02-40 x In) 4.19 (628.5A)

MV-FDR-D-50/51 - Phase

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 22 of 126

MV-Main-B 51 Phase Vs MV-Feeder-E 50/51 Phase

The Feeder-E Phase protection is set to operate before the Main-B Phase protection. Note that for this scenario the Cony Road line is out of service and the Blaire Road line is in service.

MV-CBL-FDR-E-1

MV-FDR-E-50/51 - Phase

2118 A

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-MAIN-B-51 PH VS MV-FDR-E-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-SWGR-200

T

IM

E

IN

S E

C O

N D

S

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

MV-CBL-FDR-E-1

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

50P[1], (0.02-40 x In) 5.36 (804A)

MV-FDR-E-50/51 - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

MV-CBL-FDR-E-1

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

50P[1], (0.02-40 x In) 5.36 (804A)

MV-FDR-E-50/51 - Phase

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 23 of 126

MV-Main-B 51 Phase Vs MV-Feeder-F 50/51 Phase

The Feeder-F Phase protection is set to operate before the Main-B Phase protection. Note that for this

MV-CBL-FDR-F-1

MV-FDR-F-50/51 - Phase

2170 A

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-MAIN-B-51 PH VS MV-FDR-F-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-SWGR-F

T

IM

E

IN

S E

C O

N D

S

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

MV-CBL-FDR-F-1

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.17 (775.5A)

MV-FDR-F-50/51 - Phase

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

MV-CBL-FDR-F-1

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.17 (775.5A)

MV-FDR-F-50/51 - Phase

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 24 of 126

MV-Main-B 51 Phase Vs MV-Feeder-G 50/51 Phase

The Feeder-G Phase protection is set to operate before the Main-B Phase protection. Note that for this

MV-CBL-G

MV-FDR-G-50/51 - Phase

2271 A

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-MAIN-B-51 PH VS MV-FDR-G-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-BUS-T4-SW

T

IM

E

IN

S E

C O

N D

S

MV-CBL-G

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.39 (808.5A)

MV-FDR-G-50/51 - Phase

MV-CBL-G

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1.16 (348A)

ANSI EINV 0.42

MV-MAIN-B-51 - Phase

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.39 (808.5A)

MV-FDR-G-50/51 - Phase

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 25 of 126

MV-Bus-Tie 51 Phase Vs MV-Feeder-A 50/51 Phase

The Feeder-A Phase protection is set to operate before the Bus-Tie Phase protection. Note that for this

2321 A

MV-CBL-FDR-A

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-BUS-TIE-51 PH VS MV-FDR-A-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-BUS-T14-SW

T

IM

E

IN

S E

C O

N D

S

MV-BUS-TIE-51 - Phase

MV-FDR-A-50/51 - Phase MV-CBL-FDR-A

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 3.24 (648A)

MV-BUS-TIE-51 - Phase

MV-FDR-A-50/51 - Phase MV-CBL-FDR-A

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 3.24 (648A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 26 of 126

MV-Bus-Tie 51 Phase Vs MV-Feeder-B 50/51 Phase

The Feeder-B Phase protection is set to operate before the Bus-Tie Phase protection. Note that for this

2128 A

MV-CBL-FDR-B

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-BUS-TIE-51 PH VS MV-FDR-B-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-BUS-T16-SW

T

IM

E

IN

S E

C O

N D

S

MV-BUS-TIE-51 - Phase

MV-FDR-B-50/51 - Phase MV-CBL-FDR-B

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.12 (224A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 2.98 (596A)

MV-BUS-TIE-51 - Phase

MV-FDR-B-50/51 - Phase MV-CBL-FDR-B

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.12 (224A)

50P[1], (0.02-40 x In) 2.98 (596A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 27 of 126

MV-Bus-Tie 51 Phase Vs MV-Feeder-C 50/51 Phase

The Feeder-C Phase protection is set to operate before the Bus-Tie Phase protection. Note that for this

1925 A

MV-CBL-FDR-C

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-BUS-TIE-51 PH VS MV-FDR-C-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-SWGR-C

T

IM

E

IN

S E

C O

N D

S

MV-BUS-TIE-51 - Phase

MV-FDR-C-50/51 - Phase MV-CBL-FDR-C

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1

50P[1], (0.02-40 x In) 6.46 (1292A)

MV-BUS-TIE-51 - Phase

MV-FDR-C-50/51 - Phase MV-CBL-FDR-C

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1

50P[1], (0.02-40 x In) 6.46 (1292A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 28 of 126

MV-Bus-Tie 51 Phase Vs MV-Feeder-D 50/51 Phase

The Feeder-D Phase protection is set to operate before the Bus-Tie Phase protection.

2952 A

MV-CBL-FDR-D-1

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-BUS-TIE-51 PH VS MV-FDR-D-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-200E-SWGR

T

IM

E

IN

S E

C O

N D

S

MV-BUS-TIE-51 - Phase

MV-FDR-D-50/51 - Phase

MV-CBL-FDR-D-1

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

50P[1], (0.02-40 x In) 4.19 (628.5A)

MV-BUS-TIE-51 - Phase

MV-FDR-D-50/51 - Phase

MV-CBL-FDR-D-1

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 29 of 126

MV-Bus-Tie 51 Phase Vs MV-Feeder-E 50/51 Phase

The Feeder-E Phase protection is set to operate before the Bus-Tie Phase protection.

3022 A

MV-CBL-FDR-E-1

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-BUS-TIE-51 PH VS MV-FDR-E-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-SWGR-200

T

IM

E

IN

S E

C O

N D

S

MV-BUS-TIE-51 - Phase

MV-FDR-E-50/51 - Phase

MV-CBL-FDR-E-1

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

50P[1], (0.02-40 x In) 5.36 (804A)

MV-BUS-TIE-51 - Phase

MV-FDR-E-50/51 - Phase

MV-CBL-FDR-E-1

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 30 of 126

MV-Bus-Tie 51 Phase Vs MV-Feeder-F 50/51 Phase

The Feeder-F Phase protection is set to operate before the Bus-Tie Phase protection.

3231 A

MV-CBL-FDR-F-1

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-BUS-TIE-51 PH VS MV-FDR-F-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-SWGR-F

T

IM

E

IN

S E

C O

N D

S

MV-BUS-TIE-51 - Phase

MV-FDR-F-50/51 - Phase

MV-CBL-FDR-F-1

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.17 (775.5A)

MV-BUS-TIE-51 - Phase

MV-FDR-F-50/51 - Phase

MV-CBL-FDR-F-1

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.17 (775.5A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 31 of 126

MV-Bus-Tie 51 Phase Vs MV-Feeder-G 50/51 Phase

The Feeder-G Phase protection is set to operate before the Bus-Tie Phase protection.

3230 A

MV-CBL-G

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-BUS-TIE-51 PH VS MV-FDR-G-50/51 PH.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS 3P) at MV-BUS-T4-SW

T

IM

E

IN

S E

C O

N D

S

MV-BUS-TIE-51 - Phase

MV-FDR-G-50/51 - Phase

MV-CBL-G

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.39 (808.5A)

MV-BUS-TIE-51 - Phase

MV-FDR-G-50/51 - Phase

MV-CBL-G

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings Phase 51P[1] (0.02 - 4 x In) 1 (300A)

ANSI EINV 0.4

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.39 (808.5A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 32 of 126

MV-Feeder-A 50/51 Phase Vs MV-FUSE-T17

The Feeder-A 51P protection is set to operate after the largest downstream fuse. The Feeder 50P protection may operate before the fuse for bolted high side faults, but this is required for the 50P protection to coordinate with upstream devices.

MV-CBL-FDR-A

2344 A

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-FDR-A-50/51 PH VS MV-FUSE-T17.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at MV-BUS-T17-SW

T

IM

E

IN

S E

C O

N D

S

COOPER

Bay-O-Net Dual Sensing Fuse Link, 23kV 358C14 Trip 65.0 A Settings Phase

65.0 Amps

MV-FUSE-T17

MV-CBL-FDR-A

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 3.24 (648A)

MV-FDR-A-50/51 - Phase

COOPER

Bay-O-Net Dual Sensing Fuse Link, 23kV 358C14 Trip 65.0 A Settings Phase

65.0 Amps

MV-FUSE-T17

MV-CBL-FDR-A

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 3.24 (648A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 33 of 126

MV-Feeder-B 50/51 Phase Vs MV-FUSE-T17

The Feeder-B 51P protection is set to operate after the largest downstream fuse. The Feeder 50P

2971 A

MV-CBL-FDR-B

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-FDR-B-50/51 PH VS MV-FUSE-T17.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at MV-BUS-T17-SW

T

IM

E

IN

S E

C O

N D

S

MV-FUSE-T17

MV-FDR-B-50/51 - Phase

MV-CBL-FDR-B

COOPER

Bay-O-Net Dual Sensing Fuse Link, 23kV 358C14 Trip 65.0 A Settings Phase

65.0 Amps

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.12 (224A)

ANSI EINV 1.25

50P[1], (0.02-40 x In) 2.98 (596A)

MV-FUSE-T17

MV-FDR-B-50/51 - Phase

MV-CBL-FDR-B

COOPER

Bay-O-Net Dual Sensing Fuse Link, 23kV 358C14 Trip 65.0 A Settings Phase

65.0 Amps

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.12 (224A)

50P[1], (0.02-40 x In) 2.98 (596A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 34 of 126

MV-Feeder-C 50/51 Phase Vs MV-FUSE-SWGR-C-3

The Feeder-C phase protection is intended to operate after the largest downstream fuse, but was not able to while coordinating with upstream devices. Coordination with upstream devices takes precedence. Note that under normal circumstances Feeder-C only feeds MV Switchgear C, therefor the Feeder operating first will not result in any additional load being deenergized.

2915 A

MV-CBL-FDR-C

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-FDR-C-50/51 PH VS MV-FUSE-SWGR-C-3.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at MV-BUS-T8-SW

T

IM

E

IN

S E

C O

N D

S

MV-FDR-C-50/51 - Phase

MV-FUSE-SWGR-C-3

MV-CBL-FDR-C

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1

50P[1], (0.02-40 x In) 6.46 (1292A)

S&C SMU-20, 14.4kV E-Rated

SMU-20, 200E

Trip 200.0 A Settings Phase 200 Amps

MV-FDR-C-50/51 - Phase

MV-FUSE-SWGR-C-3

MV-CBL-FDR-C

EATON

EDR-3000

EDR-3000

CT 200 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1 (200A)

ANSI EINV 1

50P[1], (0.02-40 x In) 6.46 (1292A)

S&C SMU-20, 14.4kV E-Rated

SMU-20, 200E

Trip 200.0 A Settings Phase 200 Amps

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 35 of 126

MV-Feeder-D 50/51 Phase Vs MV-SWGR-FUSE-T5

The Feeder-D phase protection is intended to operate after the largest downstream fuse, but was not precedence. Note that for this scenario Feeder-E is out of service and MV Switchgear 200 switches are closed to allow Feeder-D to carry Feeder-E load.

MV-CBL-FDR-D-1

2812 A

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-FDR-D-50/51 PH VS MV-SWGR-FUSE-T5.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at BUS-0105

T

IM

E

IN

S E

C O

N D

S

S&C SMU-20, 14.4kV E-Rated

SMU-20, 200E

Trip 200.0 A Settings Phase 200 Amps

MV-SWGR-FUSE-T5

MV-CBL-FDR-D-1

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

50P[1], (0.02-40 x In) 4.19 (628.5A)

MV-FDR-D-50/51 - Phase

S&C SMU-20, 14.4kV E-Rated

SMU-20, 200E

Trip 200.0 A Settings Phase 200 Amps

MV-SWGR-FUSE-T5

MV-CBL-FDR-D-1

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 36 of 126

MV-Feeder-E 50/51 Phase Vs MV-SWGR-FUSE-T5

The Feeder-E phase protection is intended to operate after the largest downstream fuse, but was not precedence. Note that under normal circumstances Feeder-E only feeds T5, therefor the Feeder operating first will not result in any additional load being deenergized.

3018 A

MV-CBL-FDR-E-1

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-FDR-E-50/51 PH VS MV-SWGR-FUSE-T5.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at BUS-0105

T

IM

E

IN

S E

C O

N D

S

MV-SWGR-FUSE-T5

MV-FDR-E-50/51 - Phase MV-CBL-FDR-E-1

S&C SMU-20, 14.4kV E-Rated

SMU-20, 200E

Trip 200.0 A Settings Phase 200 Amps

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

ANSI EINV 0.9

50P[1], (0.02-40 x In) 5.36 (804A)

MV-SWGR-FUSE-T5

MV-FDR-E-50/51 - Phase MV-CBL-FDR-E-1

S&C SMU-20, 14.4kV E-Rated

SMU-20, 200E

Trip 200.0 A Settings Phase 200 Amps

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.5 (225A)

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 37 of 126

MV-Feeder-F 50/51 Phase Vs MV-SWGR-FUSE-T24

The Feeder-F 51P protection is set to operate after the largest downstream fuse. The Feeder 50P

3222 A

MV-CBL-FDR-F-1

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-FDR-F-50/51 PH VS MV-SWGR-FUSE-T24.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at MV-BUS-T24-SW

T

IM

E

IN

S E

C O

N D

SEATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.17 (775.5A)

MV-FDR-F-50/51 - Phase

MV-CBL-FDR-F-1

CUTLER-HAMMER

CLE, 15.5kV E-Rated

CLE, 65E

Trip 65.0 A Settings Phase

65.0 Amps

MV-SWGR-FUSE-T24

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.17 (775.5A)

MV-FDR-F-50/51 - Phase

MV-CBL-FDR-F-1

CUTLER-HAMMER

CLE, 15.5kV E-Rated

CLE, 65E

Trip 65.0 A Settings Phase

65.0 Amps

MV-SWGR-FUSE-T24

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 38 of 126

MV-Feeder-G 50/51 Phase Vs MV-FUSE-T4

The Feeder-G 51P protection is set to operate after the largest downstream fuse. The Feeder 50P

3230 A

MV-CBL-G

10 100 1K 10K 100K

0.01

0.10

CURRENT IN AMPERES

MV-FDR-G-50/51 PH VS MV-FUSE-T4.tcc Ref. Voltage: 12470V Current in Amps x 1

Branch Fault Current (AsymRMS 3P) at MV-BUS-T4-SW

T

IM

E

IN

S E

C O

N D

S

MV-FDR-G-50/51 - Phase

MV-FUSE-T4

MV-CBL-G

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.39 (808.5A)

RTE

BAYONET

Trip 65.0 A Settings Phase Opening Clearing Curve

MV-FDR-G-50/51 - Phase

MV-FUSE-T4

MV-CBL-G

EATON

EDR-3000

EDR-3000

CT 150 / 5 A

Settings Phase 51P[1], (0.02-4 x In) 1.66 (249A)

ANSI EINV 0.75

50P[1], (0.02-40 x In) 5.39 (808.5A)

RTE

BAYONET

Trip 65.0 A

Opening Clearing Curve

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 39 of 126

Appendix B Togus VA 12470V Ground Overcurrent Coordination

MV-216D1 50/51 Ground Vs MV-Main-A 51 Ground Vs MV-Main-A Fuse

The Togus Main-A ground protection is set to operate before the CMP recloser slow ground curve. The CMP distribution line fast ground curve (not shown) may operate first for a ground fault, but will reclose to restore the line. The Togus Main-A phase protection will prevent miscoordination with the fuse (see appropriate TCC). Note that CMP distribution ground protection is typically not set to coordinate with downstream fuses because doing so requires unacceptably high pickups.

MV-216D1-50/51-SLOW - GF

MV-MAIN-A-51 - GF

2165 A

MV-216D1-50/51-FAST - GF

10 100 1K 10K

0.01

0.10

CURRENT IN AMPERES

MV-261D1-50/51 GR VS MV-MAIN-A-51 GR.tcc Ref. Voltage: 12470V Current in Amps x 1 A*Shifted

Branch Fault Current (AsymRMS SLG) at MV-246-SWGR-A

T

IM

E

IN

S E

C O

N D

S

MV-216D1-50/51-SLOW - GF

MV-CONY-FUSE

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings GF 51G1P(0.1-3.20 x CTR) 0.28 (280A) 9 (131) 1

KEARNEY

T Fuse Links 200T Trip 200.0 A Settings Phase

200.0 Amps

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings GF 51X[1] (0.02 - 4 x In) 0.2 (60A)

ANSI MINV 5

MV-MAIN-A-51 - GF

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings GF 51G1P(0.1-3.20 x CTR) 0.28 (280A) 8 (113) 1

MV-216D1-50/51-FAST - GF

MV-216D1-50/51-SLOW - GF

MV-CONY-FUSE

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings GF 51G1P(0.1-3.20 x CTR) 0.28 (280A) 9 (131) 1

KEARNEY

T Fuse Links 200T Trip 200.0 A Settings Phase

200.0 Amps

EATON

EDR-5000

EDR-5000

CT 300 / 5 A

Settings GF 51X[1] (0.02 - 4 x In) 0.2 (60A)

ANSI MINV 5

MV-MAIN-A-51 - GF

SEL

351R

SEL-351R

CT 1000 / 1 A

Settings GF 51G1P(0.1-3.20 x CTR) 0.28 (280A) 8 (113) 1

MV-216D1-50/51-FAST - GF

Togus VA Electrical Distribution Upgrade Coordination Study 03_18_2022.docx Page 40 of 126

MV-207D2 50/51 Ground Vs MV-Main-B 51 Ground Vs MV-Main-B Fuse

The Togus Main-B ground protection is set to…