Standard Technical Specifications for Electrical Works CABLES AND ACCESSORIES. 11 kv XLPE-Insulated Three-Core Underground Cables

Transcription

1 Standard Technical Specifications for Electrical Works CABLES AND ACCESSORIES ( Data Sheets ) 11 kv XLPE-Insulated Three-Core Underground Cables (3x240 mm 2 ) ADWEA/ADDC/AADC STANDARD : D-AAA-CAB-11-3Cx240 (Rev ) Page 1 of 11

2 Table of Content Page 1.00 GENERAL CONSTRUCTION DATA ELECTRICAL DATA OTHER DATA DRUM DETAILS SUPPORTING DOCUMENTS 11 Page 2 of 11

3 1.00 GENERAL 1.01 Manufacturer name El Sewedy Cables country of manufacturer Egypt 1.02 Manufacturer quality system applicable standards ISO certified by (Company Name) BASEC validity till (year) 4th of November Applicable standard(s) for the Cable IEC Cat A Cat A 1.04 Type test carried out yes/no yes Yes date dd-mm-yy 25/4-27/ testing station name KEMA country Netherlands 2.00 CONSTRUCTION DATA 2.01 Conductor applicable standards IEC / / type compacted round, Compact round stranded Stranded material annealed copper wires Annealed Copper Wires minimum cross-section (electrical) mm longitudinal water stopper material in conductor water blocking tape between each yes Yes layer of wires? approximate diameter mm Conductor screen Page 3 of 11

4 material extruded semi- Extruded Semiconducting compound conducting compound minimum thickness mm thermal resistivity C.m/W volume resistivity of conductor screen Ωm at 90 o C 1000 (max) allowable protrusion in conductor screen at µm 175 conductor screen & insulation interface approximate diameter mm Insulation material tree-retardant XLPE tree-retardant XLPE minimum thickness mm maximum thickness mm thermal resistivity C.m/W allowable protrusion in insulation at µm 75 insulation and insulation screen interface allowable protrusion in insulation at µm 75 conductor screen and insulation interface approximate diameter mm Insulation screen (non-metallic) material strippable extruded Strippable extruded semi-conducting semi-conducting compound compund minimum thickness mm thermal resistivity C.m/W volume resistivity of insulation screen Ωm at 90 o C 500 (max) allowable protrusion in insulation screen at µm 125 insulation and insulation screen interface approximate diameter mm Extrusion method of conductor screen, Triple extrusion insulation and insulation screen simultaneously yes/no yes Yes 2.06 Method of curing (gas/silicone/silane/long die, etc.) gas Gas Page 4 of 11

5 2.07 Method of cooling (water/nitrogen, etc.) Water/Dry 2.08 Insulation screen (metallic) material annealed cooper tapes annealed copper tapes number of layers No nominal thickness mm volume resistivity of metallic screen Ωm at 90 o C e -8 at 20 C approximate diameter mm Interstitial conductor applicable standards IEC number of cores material copper copper minimum cross section mm volume resistivity of interstitial conductor Ωm at 90 o C e -8 at 20 C material 2.10 Fillers material polypropylene yarn polypropylene Filler 2.11 Binder material polyester tape polyester tape thickness mm 0.05 approx approximate diameter mm Inner sheath applicable standards IEC material PVC ST 2 PVC - ST nominal thickness (according to IEC ) mm minimum thickness (according to IEC ) mm thermal resistivity C.m/W approximate diameter mm Armouring type galvanised galvanized steel tape steel tape Page 5 of 11

6 number of steel tapes nominal thickness mm width mm cross section mm approximate diameter mm Outer sheath applicable standards IEC material PVC ST 2 PVC - ST nominal thickness (according to IEC ) mm minimum thickness (according to IEC ) mm sulphide resistant yes/no yes yes chloride paraffin free yes/no yes Yes fire retardant according IEC Cat A yes/no yes Yes thermal resistivity C.m/W color red red length marking at every meter interval yes/no yes yes text embossed as specified yes/no yes yes 2.15 Cable overall diameter (approx.) mm Nominal weights cable with armouring kg/m steel kg/m (-/+) 2% copper kg/m (-/+) 2% 3.00 ELECTRICAL DATA 3.01 Rated voltage (Uo/U) kv 6.35 / / 11 phase + interstitial 3.02 Highest system voltage (Umax) kv Frequency H z Standard switching impulse withstand kv peak N/A N/A voltage (peak value) 3.05 Impulse withstand voltage (+90 C) kv peak Page 6 of 11

7 3.06 Power frequency withstand test voltage (4 x Uo) kv/4hrs Maximum partial discharge at 1.73 U Routine Test pc Type Test pc Dielectric stress at power frequency voltage at insulation screen kv/mm at conductor screen kv/mm Maximum current carrying capacity (at Uo) for the following conditions, L.F.=1: in ground: soil temperature=40 C, depth=1.1m, T.R.= 1.5 m.k/w cable A cables, d=15cm A cables, d=15cm A cables, d=15cm A in concrete cable trench/cable room: air= 50 0 C cable on tray/racks A to 3 cables on tray/racks A to 5 cables on tray/racks A Maximum emergency current rating at 60% A 610 at 60% load and 80% pre-load to IEC (for 4 hrs) 555 at 80% load 3.11 Copper loss at full load condition per cable W/m/phase Maximum dielectric loss per cable at normal W/m/phase Neglected voltage, normal frequency and maximum conductor temperature 3.13 Metallic screen loss (including interstitial W/m/phase 0 conductors) of cable per metre at nominal voltage, normal frequency at half load and full load conditions per cable 3.14 Maximum loss of steel tape armour per metre at W/m/phase neglected normal operating conditions and at maximum conductor temperature Page 7 of 11

8 3.15 Total losses of cable per metre at normal W/m/phase 40 operating conditions and at maximum conductor temperature 3.16 Permissible symmetrical fault current in conductor for 1.0 s duration ka for 0.5 s duration ka maximum conductor short circuit temperature C Asymmetrical fault current in metallic screen for 1.0 s duration ka for 0.5 s duration ka ** maximum metallic screen short circuit C temperature (0.5 second) 3.18 Minimum asymmetrical fault current in interstitial copper conductor for 1.0 s duration ka for 0.5 s duration ka 25 ** maximum interstitial copper conductor short C 200 circuit temperature (0.5 second) ** metallic screen and interstitial copper conductor bonded 3.19 Screening factor (ground current/total earth N/A fault current at earth faults) 3.20 Maximum permissible continuous conductor C temperature 3.21 Maximum permissible temperature of outer sheath at normal operation C at emergency operation, refer to below C at short circuit C Maximum permissible conductor temperature for C % of max. transmission capacity, prevailing maximum 100 hrs/year and 500 hrs in total (emergency overload) 3.23 Duration at which the cable can be sustained at hour 4 maximum conductor temperature under emergency situation Page 8 of 11

9 3.24 Maximum permissible short-circuit temperature for welded/pressed conductor connections C appropriate duration s Maximum DC conductor resistance at 20 C mω/km (five-digit accuracy) 3.26 Maximum AC conductor resistance at 90 C mω/km (five-digit accuracy) 3.27 Maximum DC metallic sheath resistance at 20 C Ω/km for copper tape 3.28 Minimum insulation resistance at 20 C GΩ.km As Per IEC Maximum d.c. resistance of steel tape armour µω/m 1114 per metre of cable at 20 C 3.30 Loss current to earth at three-phase system ma/km (at 90 C and Uo) 3.31 Maximum working capacitance under full load µf/km 0.47 condition 3.32 Working inductance for the conductors mh/km for metallic sheath mh/km Relative permitivity of XLPE insulation at 20 C (maximum) at 90 C (maximum) Maximum value of dielectric loss angle of cable x at nominal voltage, 50 H z and at conductor temperature of 20 o C 3.35 Dissipation factor at 90 C conductor temperature at 0.5 x Uo(max) x 10-3 according to clause at 1.0 x Uo(max) x in BS 6622 the at 2.0 x Uo(max) x 10-3 Max. increase is 20 e Maximum charging current at Uo per conductor A/km Charging capacity of three-phase system (at Uo) kvar/km Relative permitivity of outer covering 3.39 Approximate surge impedance µω/m Positive phase sequence impedance (R+jX) per µω/m j 89.5 metre of three phase circuit at 90 C Page 9 of 11

10 3.41 Zero phase sequence impedance (R+jX) per µω/m j 56 metre of three phase circuit at 90 C 3.42 Max. electrostatic capacitance per core per pf/m 470 meter of cable 4.00 OTHER DATA 4.01 Date of first commercial operation of the dd-mm-yy 1997 offered cable type 4.02 Reference list/sheet attached yes/no yes Yes 4.03 The design life of the offered cable type years Guarantee failure rate as a result of an internal breakdown (No. of failure per 100 km circuit per year) 4.05 Minimum permissible bending radius D in ducts m laid direct or in air m adjacent to joints or terminals m Maximum permissible pulling force kn Maximum permissible sidewall pressure to cable at bending point kn/m Delivery length per drum standard length m maximum length m minimum length m tolerance on length of cable % Recommended size of cable duct mm 110 inner Diameter 5.00 DRUM DETAILS 5.01 Manufacturer name EL SEWEDY CABLES country of manufacture EGYPT 5.02 Material Page 10 of 11

11 wooden yes/no no no steel with screwed lagging (returnable) yes/no yes yes lagging material wooden slabs Wooden Slabs 5.03 Overall dimensions flange diameter (max.) mm core diameter mm width (max.) mm Minimum spindle hole diameter mm Weights maximum gross weight of a full drum kg empty drum kg SUPPORTING DOCUMENTS 6.01 Whether all type test reports enclosed yes/no yes yes 6.02 Whether technical literature enclosed yes/no yes yes 6.03 Whether tables giving rating factors for variation yes/no yes yes in standard conditions of installation enclosed 6.04 Whether relevant drawings enclosed yes/no yes yes Page 11 of 11