27 Jan 2015 Yang Sirui Qin Gaoyuan Sun Jingyu Zhou Xiang DH1/A3-C2/DE/E/1097 23 MAY.2014 Yang Sirui Qin Gaoyuan Sun Jingyu Zhou Xiang DH1/A3-C2/DE/E/0956 15 APR.2014 Yang Sirui Qin Gaoyuan Sun Jingyu Zhou Xiang DH1/A3-C2/DE/E/0829 10 Mar.2014 Yang Sirui Qin Gaoyuan Sun Jingyu Zhou Xiang DH1/A3-C2/DE/E/0777 28 JAN.2014 Yang Sirui Qin Gaoyuan Sun Jingyu Zhou Xiang First issue DATE PREPARED BY CHECKED BY REVIEWED BY APPROVED BY DESCRIPTION OWNER VIETNAM ELECTRICITY THERMAL POWER PROJECT MANAGEMENT BOARD CONSULTANT POWER ENGINEERING CONSULTING JOINT STOCKCOMPANY CONTRACTOR DONGFANG ELECTRIC CORPORATION LIMITED SUBCONTRACTOR GUANGDONG ELECTRIC POWER DESIGN INSTITUTE EVN Ref No.: DH1/TD/795/023/001/00 DEC Ref No.: DH1_DDBSE3_D_0101_215 PROJECT: Document Status: DUYEN HAI THERMAL POWER PLANT PROJECT CONTRACT NO.： DH1-30032010 FOR APPROVAL Document Title: Cable Sizing Study For 400V/230V Cable Of CCW Pump House Area Document No.: Rev.: F4281S-D0101-215 DUYEN HAI THERMAL POWER PROJECT Cable Sizing and Cable Voltage Drop Study CONTENTS General Introduction Reference Documents 3 Cable Sizing Criteria Cable Installation Method Voltage Drop Current Carrying Capacity Short Circuit Calculation ATTACHMENT Table of Cable Sizing Calculation DUYEN HAI THERMAL POWER PROJECT Cable Sizing and Cable Voltage Drop Study General Introduction The purpose of this document is to show the cable selection methods for cable sizing and cable voltage drop calculation for MV and LV Power Cable including 6.6kV AC power cable and 0.6/1kV AC power cable.data Input: For sizing of the cables the following conditions will apply: a) Soil temperature for cables Not less than 30 °C at 1m depth direct buried or indirect buried ducts b) Soil thermal resistivity (Refer 1.2 °C cm/W ~(converts Kevin Unit According to SSP E- 210 Cable and 1.2Km/W) wire, item 3.2.2-Cable rating) c) Group de-rating According to Manufacture’s IEC 60087 or recommendations (which ever method gives the lowest result) d) temperatures for different In the air :30°C applications In the soil: 30°C Reference Documents - EPC Contract Technical Specification (Part VII) - POWER CABLE LIST (F4281S-D1114) - Short-Circuit Analysis Report (F4281S-D0101-203) - Documents for Relevant Load List (F4281S-D0310-201,202,203) - Technical specification for power cables(DH1-DE-A3-TD-E-0094) Cable Sizing Criteria IEC60364-5-52Electrical_installations_of_buildings_– DUYEN HAI THERMAL POWER PROJECT Cable Sizing and Cable Voltage Drop Study Part_5-52Selection_and_erection_of_electrical_equipment_– Wiring_systems IEC 60502 Power cables with extruded insulation and their accessories for rated voltages from kV up to 30 kV IEC 60909-0 Short-circuit currents in there-phase a.c systems – calculation of currents IEC 60909-1 Short-circuit currents in there-phase a.c systems – Factors for the calculation IEC 60909-2 Electrical equipments – Data for Short-circuit current calculations IEC 60909-3 Short-circuit currents in there-phase a.c systems – currents during two separate EC 60909-4 Short-circuit currents in there-phase a.c systems – Examples for the calculation of short-circuit currents IEC 60332-3-23 Tests on electrical cables under fire conditions - part 324 Test for vertical flame spread of vertically Manual of power cable Cable is sized to fulfill the criteria of both current-carrying capacity and voltage drop Cable Installation Method The following method or their combinations is generally used to install cables: On multi-level cable trays/cable ladder which are inside trenches In conduit In free air, on trays, brackets, ladders, etc In cable ducts which are underground Underground installation: All cables shall be run in PVC pipes encased concrete duck bank DUYEN HAI THERMAL POWER PROJECT Cable Sizing and Cable Voltage Drop Study Above ground installation: All cables shall be run in Cable tray/Cable ladder/Conduits made of hot dipped galvanized steel with cover Covers will be provided wherever mechanical protection is required According to the cable tray/Cable ladder/Conduit routing Drawings All calculation for specific cables are based on the installation method that has the most stringent cable sizing requirements in its cable route Voltage Drop 5.1 Voltage Drop Of Normal Operation State The voltage drop is calculated in percentage of the rated nominal voltage The Calculation checks whether the voltage drop is within the required voltage drop tolerance, namely 3% of rated nominal voltage Voltage drop is defined by: ∆U(V) = √3 × I × L(R cos ∅ + X sin ∅) Where: R and X (_/km) are the resistance and reactance of a cable per kilometer; R apply for the cable resistance of 90℃ The converting process for resistance from 20℃ to 90℃ is as following: ρ: Cable resistance for meter mm2 cable (Ω) ρ = ρ0 (1 + α(θcore − 20) ρ0 : cable resistance for meter mm2 cable (Ω) at 20℃ ρ0 =0.01851 for copper α: Temperature factor; α = 0.00393, for copper θcore : Conductor maximum temperature in rated conditions (℃) In this study, θcore = 90℃ will be used Ur is the nominal voltage of the distribution board The default value is 230V for single phase and 400V for three –phase circuit n is the number of conductors in parallel per phase; DUYEN HAI THERMAL POWER PROJECT Cable Sizing and Cable Voltage Drop Study L (km) is the length of the conductor; U x is the voltage drop values by phase system, cross section and formation of the cable according to the most common Cos 0.85 value used for this calculation According to above equation, if the result calculated by I,b' satisfies the specification, the result calculated by I b is also satisfaction 5.2 Voltage Drop Of Starting Motor State The voltage drop is calculated in percentage of the rated nominal voltage The Calculation checks whether the voltage drop is within the required voltage drop tolerance, namely 5% of rated nominal voltage Voltage drop is defined by: ∆U(V) = √3 × I × n × L(R cos ∅ + X sin ∅) Where: R and X (_/km) are the resistance and reactance of a cable per kilometer; R apply for the cable resistance of 90℃ “n” (Starting Current/Normal Current ) and cos ∅ (Starting Power Factor ) is chosen according to the following table Motor Rating ＞25kW ＜25kW Starting Current/Normal Current 6 Starting Power Factor 0.4 0.3 Current Carrying Capacity The current-carrying capacity of cable is according to the following manufacturer data of document F4281-GEDI-P-ZP-0076-0 Specification document of Jiangsu Jiangyang Cable Co., Ltd which is issued in letter No DH1-DE-A3-E-13-5338 DH!-DE-A3-TD-E-0084 Technical Specification of Power Cables which is issued in letter No DH1-DE-A3-E-13-0189 DUYEN HAI THERMAL POWER PROJECT Cable Sizing and Cable Voltage Drop Study k is a coefficient equal to: -2 for single phase two wires system; -√3 for three phase four wires system; I b' (A) is the current drawn by the connected load considered to correction factors For cable installed in cable tray Ib′ = k1 ∗ k ∗ k ∗ ICable Capacity k1: is the correction factor refer to IEC 60502-2 TABLE B10 k2: is the correction factor for adjacent cables, refer to Chinese Standard GB50217-2007 Table D.0.6, k3: is the Assymetrical Factor For cable installed in conduct under ground Ib′ = k ∗ k ∗ k ∗ k ∗ k ∗ ICable Capacity k4: is the correction factor refer to IEC 60502-2, P64 TABLE B10 k5: is the correction factor refer to IEC 60502-2, P65 TABLE B13 k6: is the correction factor refer to IEC 60502-2, TABLE B.17 k7 is the correction factor refer to Chinese Standard GB50217-2007 Table D.0.6, I b is the current drawn by the connected load without consideration to correction factors Short Circuit Calculation The short circuit capacity of the cables are calculated based on the following: I = kxS/√𝐭 where t = Permissible break time after fault in seconds DUYEN HAI THERMAL POWER PROJECT Cable Sizing and Cable Voltage Drop Study S = Conductor cross section in mm2 I = Current on dead short circuit in A K = Constant.143 for XLPE- insulated copper wire DUYEN HAI THERMAL POWER PROJECT Cable Sizing and Cable Voltage Drop Study ATTACHMENT Table of Cable Sizing Calculation DUYEN HAI THERMAL POWER PLANT PROJECT Cable Sizing From(Source point) NO To(Destination point) KKS Identity of Cable Input Power(kW) Power factor (Rated) Power factor (Starting) Ur(V) Ib (A) 400 62.829 Cu/XLPE ZR-YJV22-0.6/13X35+1X16 135 0.6/1kV Cu/XLPE ZR-YJV22-0.6/13X35+1X16 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 0.6/1kV 0.6/1kV 165 0.076 0.524 （kArms） (second) （mm2） 1.197 4.379 -3.100 10.000 -1.903 14.379 4.435 0.15 12 135 165 0.067 0.524 36 44 0.104 4.61 0.668 0.078 1.055 3.860 -3.100 10.000 -2.045 13.860 5.018 0.15 14 5.878 0.0897 0.287 0.730 -3.100 10.000 -2.813 10.730 0.376 0.15 Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.061 4.61 Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.098 4.61 5.878 0.0897 1.685 4.284 -3.100 10.000 -1.415 14.284 0.641 0.15 5.878 0.0897 1.588 4.038 -3.100 10.000 -1.512 14.038 0.399 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.005 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.063 4.61 5.878 0.0897 0.018 0.047 -3.100 10.000 -3.082 10.047 7.712 0.15 4.61 5.878 0.0897 1.740 4.425 -3.100 10.000 -1.360 14.425 0.621 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X16 83 101 0.094 0.6/1kV Cu/XLPE ZR-YJV22-0.6/13X50+1X25 165 201 0.065 1.15 0.727 0.0789 1.304 4.741 -3.100 10.000 -1.796 14.741 3.315 0.15 0.387 0.493 0.0748 1.233 4.631 -3.100 10.000 -1.867 14.631 6.877 0.15 19 0.6/1kV Cu/XLPE ZR-YJV22-0.6/13X50+1X25 165 201.3 0.004 0.387 0.493 0.0748 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X10 64 1.308 4.916 2.000 10.000 3.308 14.916 6.492 0.15 18 78 0.112 1.83 2.333 0.0823 1.643 4.287 -3.100 10.000 -1.457 14.287 0.879 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/12X4 36 43.92 0.015 4.61 5.878 0.0897 0.6/1kV Cu/XLPE ZR-YJV22-0.6/12X4 1.123 2.854 2.000 10.000 3.123 12.854 0.308 0.15 36 43.92 0.015 4.61 5.878 0.0897 1.123 2.854 2.000 10.000 3.123 12.854 0.308 0.15 582.530 0.6/1kV Cu/XLPE ZR-YJV22-0.6/12X4 36 43.92 0.015 4.61 5.878 0.0897 1.123 2.854 2.000 10.000 3.123 12.854 0.308 0.15 23.741 582.530 0.6/1kV 23.741 186.410 0.6/1kV Cu/XLPE ZR-YJV22-0.6/12X4 36 43.92 0.015 4.61 5.878 0.0897 1.123 2.854 2.000 10.000 3.123 12.854 0.308 0.15 Cu/XLPE ZR-YJV22-0.6/14X10 36 44 0.114 1.83 2.333 0.0823 1.254 3.273 -3.100 10.000 -1.846 13.273 0.863 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.054 4.61 5.878 0.0897 1.492 3.793 -3.100 10.000 -1.608 13.793 0.724 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/13X35+1X16 135 165 0.064 0.524 0.668 0.078 1.008 3.687 -3.100 10.000 -2.092 13.687 5.248 0.15 14 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.118 4.61 5.878 0.0897 0.326 0.829 -3.100 10.000 -2.774 10.829 0.332 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.056 4.61 5.878 0.0897 1.547 3.933 -3.100 10.000 -1.553 13.933 0.698 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/13X50+1X25 165 201 0.067 0.387 0.493 0.0748 1.186 4.456 -3.100 10.000 -1.914 14.456 6.679 0.15 18 0.6/1kV Cu/XLPE ZR-YJV22-0.6/13X50+1X25 165 201.3 0.007 0.387 0.493 0.0748 1.310 4.921 2.000 10.000 3.310 14.921 6.068 0.15 16 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.149 4.61 5.878 0.0897 1.646 4.186 -3.100 10.000 -1.454 14.186 0.263 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.069 4.61 5.878 0.0897 1.779 4.523 -3.100 10.000 -1.321 14.523 0.567 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.066 4.61 5.878 0.0897 1.823 4.635 -3.100 10.000 -1.277 14.635 0.593 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.069 4.61 5.878 0.0897 1.906 4.846 -3.100 10.000 -1.194 14.846 0.567 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X10 64 78 0.086 1.83 2.333 0.0823 1.892 4.938 -3.100 10.000 -1.208 14.938 1.144 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X16 83 101 0.089 1.15 0.727 0.0789 1.235 4.489 -3.100 10.000 -1.865 14.489 3.499 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/13X35+1X16 135 165 0.084 0.524 0.668 0.078 1.323 4.840 -3.100 10.000 -1.777 14.840 4.019 0.15 11 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.065 4.61 5.878 0.0897 1.795 4.565 -3.100 10.000 -1.305 14.565 0.602 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.071 4.61 5.878 0.0897 1.961 4.987 -3.100 10.000 -1.139 14.987 0.551 0.15 0.6/1kV Cu/XLPE ZR-YJV22-0.6/14X4 36 44 0.065 4.61 5.878 0.0897 1.795 4.565 -3.100 10.000 -1.305 14.565 0.602 0.15 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 89.027 141.697 0.6/1kV 62.829 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 89.027 141.697 1.274 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 1864.097 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 186.410 7.472 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 317.744 1.698 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 1398.073 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 186.410 50.943 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 54.735 107.444 101.885 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 108.811 106.797 101.885 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 108.811 106.797 16.981 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 42.205 248.546 4.075 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 582.530 4.075 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 582.530 4.075 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 400 4.075 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 400 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 186.410 62.829 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 89.027 141.697 1.274 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 1864.097 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 186.410 95.093 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 108.811 114.426 95.093 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 108.811 114.426 5.094 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 466.024 11.887 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 199.725 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 186.410 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 186.410 25.471 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 42.205 165.697 50.943 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 54.735 107.444 62.829 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 89.027 141.697 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 186.410 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 186.410 12.736 In cable tray and Conduit / / 0.91 0.99 0.6 0.541 23.741 186.410 ABLV5521 A0BLV05B 20PAC21GHOO1 37 0.85 0.4 400 ABLV5531 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV05C #2 Automatic filter control box #2 Automatic filter control box 0.75 0.85 0.3 400 ABLV5551 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV05E #3 Traveling screen control box 20PAA11AT002 7.5 0.85 0.3 400 ABLV5121 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV01B CW pump station drainage pump control box AOPUA11AP001GH001 4.4 0.85 0.3 400 ABLV5281 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV02H Heater of 400/230V A0BLV A0BLV00GP401 0.85 0.3 400 ABLV5291 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV02I #1 Portable pit pump AOPUA13AP001 7.5 0.85 0.3 400 ABLV5311 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV03A ventilation power for CW pump house A0UQA00GP201 30 0.85 0.4 400 ABLV5321 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV03B Semi-gantry crane SWITCH GEAR BOX A0UQA00GP311 60 0.85 0.4 400 10 ABLV5322 Semi-gantry crane SWITCH GEAR BOX A0UQA00GP311 Semi-gantry crane A0SMP11AE001 60 0.85 0.4 400 11 ABLV5331 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV03C Cooling Water pump Heater switchboard A0UQA00GP313 10 0.85 0.3 400 12 ABLV5332 Cooling Water pump Heater switchboard A0UQA00GP313 Cooling Water pump Heater 10PAC11AP001 2.4 0.85 0.3 400 13 ABLV5333 Cooling Water pump Heater switchboard A0UQA00GP313 Cooling Water pump Heater 10PAC12AP001 2.4 0.85 0.3 400 14 ABLV5334 Cooling Water pump Heater switchboard A0UQA00GP313 Cooling Water pump Heater 20PAC11AP001 2.4 0.85 0.3 400 15 ABLV5335 Cooling Water pump Heater switchboard A0UQA00GP313 Cooling Water pump Heater 20PAC12AP001 2.4 0.85 0.3 16 ABLV5131 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV01C #1 Hydraulic-driven butterfly valve control box #1 Hydraulic-driven butterfly valve control box 7.5 0.85 0.3 17 ABLV5141 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV01D #2 Hydraulic-driven butterfly valve control box #2 Hydraulic-driven butterfly valve control box 7.5 0.85 0.3 400 18 ABLV5221 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV02B #1 CCCW booster pump control box 10PAC21GHOO1 37 0.85 0.4 400 19 ABLV5231 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV02C #1Automatic filter control box #1Automatic filter control box 0.75 0.85 0.3 400 20 ABLV5251 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV02E #1 Traveling screen control box 10PAA11AT002 7.5 0.85 0.3 400 21 ABLV5351 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV03D Double girder bridge crane SWITCH GEAR BOX A0UQA00GP312 56 0.85 0.4 400 22 ABLV5352 Double girder bridge crane SWITCH GEAR BOX A0UQA00GP312 Double girder bridge crane A0SMP11AE002 56 0.85 0.4 400 23 ABLV5361 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV03F Hydraulic pump station for the sluice gate control box Hydraulic pump station for the sluice gate control box 0.85 0.3 400 24 ABLV5371 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV03G Trash racks & rake control box A0PAA10GHOO1 0.85 0.3 400 25 ABLV5431 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV04C #3 Hydraulic-driven butterfly valve control box #3 Hydraulic-driven butterfly valve control box 7.5 0.85 0.3 400 26 ABLV5441 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV04D #4 Hydraulic-driven butterfly valve control box #4 Hydraulic-driven butterfly valve control box 7.5 0.85 0.3 400 27 ABLV5471 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV04G Illumination for CW pump house A0UQA00GP001 15 0.85 0.3 400 28 ABLV5481 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV04H Maintenance power for CW pump house A0UQA00GP301 30 0.85 0.4 400 29 ABLV5491 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV04I #4 CCCW booster pump control box 40PAC21GHOO1 37 0.85 0.4 400 30 ABLV5261 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV02F #2 Traveling screen control box 10PAA12AT002 7.5 0.85 0.3 400 31 ABLV5561 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV05F #4 Traveling screen control box 20PAA12AT002 7.5 0.85 0.3 400 32 ABLV5591 400/230V CCW PUMP HOUSE MCC A0BLV00 A0BLV05I #2 Portable pit pump control box AOPUA14AP001 7.5 0.85 0.3 400 Minimum cable size S= Io√t/k (thermal stability) 0.078 #2 CCCW booster pump control box Protection device Trip time ⊿Umt (%) Voltage (kV) 400/230V CCW PUMP HOUSE MCC A0BLV00 Short circuit current ⊿Ust (%) (%) 30PAC21GHOO1 Total Voltage Drop Motor Starting ⊿Umb (%) Ib'(A) #3 CCCW booster pump control box Total Voltage Drop Steady state ⊿Usb (%) K A0BLV05A Busbar Voltage Drop Motor Starting ⊿Umc (%) K7 Cable Construction R(Ohm/km)at 90 Deg Busbar Voltage Drop Steady state ⊿Usc (%) K6 R(Ohm/km)at 20 Deg Cable Voltage Drop Motor Starting X(Ohm/km) K5 400/230V CCW PUMP HOUSE MCC A0BLV00 0.4 n K4 ABLV5511 Cable Capacity of 30 Degree L (km) K3 Location 0.85 Size of cable （mm2） K2 Description Cable Voltage Drop Steady state Cable Information Cable Capacity of 50 Degree K1 Location 37 Starting Current/Normal Current Installed current/load current Type of Installation Description Installed current carrying Capacity Correction factor Load Information 0.668