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Home My WebLink AboutARC FLAS DATA REQUEST FORM - 14-00459 & 14-00460 - 345 S 2nd - Kensington 4 PlexOfficial (as one object) Grouped One object Commercial and Industrial Arc Flash and Secondary Fault Current Information Requests Each year Rocky Mountain Power and Pacific Power provide arc flash and secondary fault current information to electrical consultants and electricians. To ensure consistency Rocky Mountain Power and Pacific Power utilize an Arc Flash/Secondary Fault Current "Request Form". Web Sites: http://www.rockymountainpower.net/con/af.html http://www.pacificpower.net/con/af.html Arc Flash and Secondary Fault Current Data Request Form (Field Engineer sends this Form to Customer. Customer fill's out Form and returns it to Field Engineer) Please submit a separate request for each site by duplicating this tab. Steps: 1) Fill in "Requestor Information, 2) Right click "Request Form (Customer) tab, 3) Move or Copy, 4) Select "Request Form (Customer), 5) Check "Create a Copy", 6) OK. Complete "Facility Location" section for each site. Requester Information Mailing Address Facility Location Figure #1: Facility Point Examples Pad Mounted Transformer Date of Request Company Name Contact Name Street Number City, State, Zip Phone Numbers Email address Company Name Facility Name * Facility Point Number If possible provide a photo of the facility point tag. Please paste the photo in the cell to the right. Meter Number * Voltage * Phase * Required Information 12/4/14 Nelson Electric LLC Greg Nelson PO Box 142 Menan, ID. 83434 Main: Cell: greg@nelson-electricllc.com Kensington Manor 031060400-290580 NA 124/240 1ph Single Phase 2087549389 2083903424 Pole Mounted Transformers Facility Point # = 05218092-173500 Data for Drop Down Menu Voltage 480Y/277 208Y/120 240 Delta 124/240 1ph Primary Delivery Customer Owned Transformer Other Voltage Drop Down Menu Phase Single Phase Three Phase Service Center Field Engineer Site Data For Arc Flash request Field Engineer completes this Form and sends to Customer. For Secondary Fault current request Field Engineer provides the transformer size information only. Primary System Fault Amps & Impedances Transformer & Service Diagram Address Phone Number Rexburg Service Center 170 W. 2nd N., Rexburg, Idaho 83440 Anthony K. Perkins 208-359-4298 Facility Information District Substation Circuit Facility Point # Primary System Voltage Transformer Connection Transformer Size / Type Delivery Voltage (1) Transformer %Z Secondary Conductor (2) Secondary Length (2) (1) Voltage as confirmed by Customer (2) Secondary conductor information is provided when available. If service is primary metered only the primary system impedance at meter point is provided. Protection Transformer Fusing Field Engineer Provides: Arc Flash Request: 1) System Impedance on primary side of distribution transformers 2) "Fault Current Infinite Bus" tables showing average transformer impedances 3) Transformer fusing information Secondary Fault Current Request: 1) Transformer size 2) "Fault Current Infinite Bus" tables Rexburg Rexburg Rexburg #15 031060400-290580 12.47Y 1ph 100kva 124/240 1ph See Fault Current Infinite Bus Tab 350 AL UG triplex 80 See Fusing Tabs Padmount Data for drop down Menu Voltages 2.4∆ 4.16Y 4.16∆ 7.2Y 7.2∆ 7.62∆ 12.47Y 13.2Y 13.2 UNIGRD 12∆ 20.8Y 14.4∆ 25Y 19.9∆ 34.5Y Drop Down Menu Transformer Connection 1ph 3ph GrdWye-GrdWye 3ph Open Wye-Delta 3ph Delta-GrdWye 3ph Delta-Delta Customer Owned Transformer Drop Down Menu Xfmr Type Pole Mount Padmount Drop Down Menu Do we need number of phases here? We have voltage which is on "Request Form (Customer)" page. Or can we get rid of voltage? Do not need this list I referenced drop down to list on "Request Form (Customer)" Secondary Voltage 480Y/277 208Y/120 480 Delta 408Y/277 2400 240 Delta 120/240 Single Phase 277 Do not need this list Xfmr Size Single Phase 5 10 15 25 37.5 50 100 167 250 333 500 Three Phase 75 112.5 150 225 500 750 1000 1500 2000 2500 3750 5000 Three Phase Banks 1 2 Short Circuit Transformer Bus Current Assuming an Infinite Bus1 Table 1: 480Y/277 Three Phase Pad Mounted Transformer Transformer kVA 75 112 150 225 300 500 750 1000 1500 2000 2500 Table 2: 208Y/120 Three Phase Pad Mounted Transformer Transformer kVA 75 112 150 225 300 500 750 2 Table 3: 120/240 Single Phase Padmount and Overhead Transformers Transformer kVA 10 25 50 75 100 167 250 333 500 Infinite Bus assumes unlimited primary short-circuit current. The power company's distribution system is constantly changing resulting in system impedances that change over time. An infinite bus eliminates the need to constantly re-evaluate short circuit current. Non-Standard Transformer Table 4: Single Phase Overhead Transformers used to create 480Y/277 banks Transformer kVA 25 37.5 50 75 100 167 250 333 Table 5: Single Phase Overhead Transformers used to create three phase banks 208Y/120, 240 Closed Delta, 240 Open Delta Transformer kVA 25 37.5 50 75 100 167 500 Stock Number 4700090 4700091 4700092 4700093 4700094 4700095 4700126 4700127 4700127 4700159 4700160 Stock Number 4700210 4700211 4700212 4700213 4700214 4700280 4700276 Stock Number N/A N/A N/A N/A N/A N/A Get impedance from nameplate. Non-Standard and too much variation to define in a table. Stock Number N/A N/A N/A N/A N/A N/A N/A N/A Stock Number NA NA NA NA NA NA NA Information provided by Manufacturer % IR 1.01 0.98 0.89 0.8 0.78 0.74 0.73 0.62 0.69 0.69 0.63 Information provided by Manufacturer % IR 1.13 0.83 0.84 0.73 0.81 0.83 0.85 Information provided by Manufacturer % IR N/A N/A N/A N/A N/A N/A Information provided by Manufacturer % IR 1.2 1.2 1 0.9 0.9 0.9 N/A N/A Information provided by Manufacturer % IR 1.2 1.2 1 0.9 0.9 0.9 1.1 %IX 2.92 2.52 2.97 3.74 3.66 3.88 5.68 5.74 5.65 5.62 5.65 %IX 2.27 2.18 2.35 3.5 3.11 3.53 5.79 %IX N/A N/A N/A N/A N/A N/A %IX 1.4 1.4 1.4 1.5 1.4 1.3 N/A N/A %IX 1.4 1.4 1.4 1.5 1.4 1.3 1.6 X/R ratio 2.89 2.57 3.34 4.68 4.69 5.24 7.78 9.26 8.17 8.14 8.97 X/R ratio 2.01 2.63 2.8 4.79 3.84 4.25 6.81 X/R ratio N/A N/A N/A N/A N/A N/A X/R ratio N/A N/A N/A N/A N/A N/A N/A N/A X/R ratio N/A N/A N/A N/A N/A N/A N/A Transformer %Z 3.09 2.7 3.1 3.83 3.74 3.95 5.73 5.77 5.69 5.66 5.69 Transformer %Z 2.54 2.33 2.5 3.58 3.21 3.63 5.85 Transformer %Z 1.72 1.72 1.66 1.69 1.79 1.74 Transformer %Z 1.84 1.84 1.72 1.75 1.66 1.58 1.7 1.6 Transformer %Z 1.84 1.84 1.72 1.75 1.66 1.58 5.8 Calculated Fault Current (Amps) 2920.79959809798 4991.75469091233 5822.75532782112 7069.40268260267 9652.69599799224 15232.5244862831 15750.9088274393 20855.6227801797 31723.2715575492 42521.8881419211 52872.119262582 Calculated Fault Current (Amps) 8202.09973753281 13352.4082021936 16666.6666666667 17458.1005586592 25960.5399792316 38261.4018977655 35613 Calculated Fault Current (Amps) 2422.48062015504 6056.2015503876 12550.2008032129 18491.124260355 23277.4674115456 39990.4214559387 Calculated Fault Current (Amps) 4905.03845550149 7357.55768325224 10494.5008815381 15471.8927282104 21747.6403810187 38157.4738381392 53089.8279889573 75135.3790613718 Calculated Fault Current (Amps) 11322.4637681159 16983.6956521739 24224.8062015504 35714.2857142857 50200.8032128514 88080.1687763713 71839.0804597701 NEMA Short Circuit Ratings Panel 100 400 800 1600 3000 4000 Rating 10000 22000 22000 65000 85000 85000 For more information on Cooper Power Bay-o-net and Isolation Links see Cooper Power Catalog. Dual Sensing Bay-o-net fuses: Cooper Power Catalog Section 240-46 http://www.cooperindustries.com/content/dam/public/powersystems/resources/library/240_Fusing/24046.pdf Isolation Links: Cooper Power Catalog Section 240-47 http://www.cooperindustries.com/content/dam/public/powersystems/resources/library/240_Fusing/24047.PDF Dual Element Bay-o-net fuses: Cooper Power Catalog Section 240-48 http://www.cooperindustries.com/content/dam/public/powersystems/resources/library/240_Fusing/24048.pdf Modifications Made to Spreadsheet Date Description of Changes made to Spreadsheet Engineer