Description Overview Rated system voltage: 6.6 kV Rated frequency: 50 Hz Number of phases: 3 System earthing: neutral resistor Earth fault current: 5 A per generator Duty type: S1 Insulation thermal class stator/rotor: F/F, vacuum impregnated Temperature rise class stator/rotor: B/B Neutral earthing resistor rating: 5 A, 10 sec Excitation: brushless (PMG) Construction According to standard: DS/EN 60034 Degree of protection outdoor IP: 56 Degree of protection indoor IP: NA Winding temperature detection: PT100 in each phase Vibration detectors required: yes, proximity type probes Preformed for portable earthing apparatus: yes Space heater: yes Painting specification: C086-TECH-M-SA-0007 external painting specification Environmental Conditions Hazardous area classification: EX II 3G EX PZ E IB IIB T3 GC Ambient temperature °C: min. -6.9, max. +25 (design +40 °C) Humidity %: 95 Project Requirements Tag no.: 80-EG-0001A/B/C Service: continuous in N+1 configuration (3 x 50%) Manufacturer: ELIN Motoren Type: HTM190E04 Location / module: weather deck Job no.: C086-TECH-E-SA-0012 Required power: 15000 kVA Rated voltage: 6.6 kV Power factor cos phi: 0.773 Location indoor/outdoor: offshore in noise hood Direct axis subtransient reactance, Xd" unsat/sat %: 16.8 % unsat / 14.0 % sat Direct axis transient reactance, Xd' unsat/sat %: 22.7 % unsat / 21.6 % sat Direction of rotation facing shaft end CW/CCW: CCW Max. allowable continuous harmonics (THD) %: 5 Vibration detectors type: proximity type Cooling Cooling method IC: IC8A1W7 Cooling medium: seawater Cooling water supply temperature max/min °C: refer to C086-TECH-Z-FD-0001 project design basis Cooling water supply pressure max/min bar g: refer to C086-TECH-Z-FD-0001 project design basis Cables and Terminals Main terminal boxes degree of protection IP: 56 Main terminal boxes material: painted steel / stainless steel Number of power cables: 3 per phase Power cable size n x mm²: (1 x 300 mm²) Power cable outer diameter mm: 43.3 Cable entry type gland/MCT/other: gland (Technip scope of supply) Auxiliary terminal boxes degree of protection IP: 56 Auxiliary boxes material: painted steel / stainless steel Other cables (specify): neutral: 1 cable, 6/10 kV, 25.4 mm Phase connection of cables on generator terminals for CCW rotation: V1 U1 W1 Generator Specifications Manufacturer: ELIN Motoren GmbH Type: HTM190E04 Degree of protection IP: 56 Frame size (IEC): IM 1005 (B3) Rotor type salient poles/cylindrical: cylindrical Synchronous speed rpm: 1500 Direction of rotation facing shaft end CW/CCW: counter-clockwise Overall dimension (L x W x H) mm: approx. 5000 x 3000 x 3100, see GA drawing for details Dimensional drawing no.: C086-TECH-E-XD-3400-001 / 10001393723 Weight of overall machine kg: 32000 Weight of rotor kg: 7861 Weight of exciter kg: 1101 Weight of heat exchanger, dry kg: 331 (each cooler bundle) Weight of coolant kg: 16 Prime mover moment of inertia J = GD²/4 kg m²: 745 (GT incl. gear) Generator moment of inertia J = GD²/4 kg m²: 735 Rated voltage kV: 6.6 Rated frequency Hz: 50 Rated power output, Sn MVA: 15 Rated power factor cos phi: 0.773 Duty type: S1 Rated current A: 1312 Max. allowable negative phase sequence current %: 9 Max. allowable continuous harmonics (THD) %: acc. IEC 5 %; acc. references 0.2 % Efficiency at 1/1 and 3/4 load %: 97.78; 97.79 - at cos phi 0.773 Field current no load A: 99 Field current rated load A: 270 Insulation class stator/rotor: F / F Temperature rise class stator/rotor: B / B Overload capability % for hours: acc. DS/EN 60034-3; 4.15 Overload capability % for seconds: acc. DS/EN 60034-3; 4.15 Sustained short-circuit % for seconds: acc. DS/EN 60034-3; 4.16 Short circuit ratio: 0.56 Direct axis subtransient reactance Xd" unsat %/±: 16.8; tol. acc. DS/EN 60034-3; 4.19 Direct axis subtransient reactance Xd" sat %/±: 14 Quadrature axis subtransient reactance Xq" %/±: 20.4 Direct axis transient reactance Xd' unsat %/±: 22.7 Direct axis transient reactance Xd' sat %/±: 21.6 Quadrature axis transient reactance Xq' %/±: 7.5 Direct axis synchronous reactance Xd unsat %/±: 20 Quadrature axis synchronous reactance Xq unsat %/±: 19.2 Negative phase sequence reactance X unsat %/±: 18.6 Negative phase sequence reactance X sat %/±: 15.7 Zero phase sequence reactance Xo unsat %/±: 7 Zero phase sequence resistance %/±: 6 Stator winding leakage reactance XL %/±: 12 Stator winding DC resistance %/±: - Negative phase sequence winding resistance %/±: - Positive phase sequence winding resistance %/±: - Direct axis S.C. subtransient time constant Td" sec: 0.02 Direct axis O.C. subtransient time constant Tdo" sec: 0.03 Quadrature axis S.C. subtransient time constant Tq" sec: 0.03 Quadrature axis O.C. subtransient time constant Tqo" sec: 0.11 Direct axis S.C. transient time constant Td' sec: 0.44 Direct axis O.C. transient time constant Tdo' sec: 4 D.C. time constant Ta sec: 0.24 Cooling method IC: IC8A1W7 Cooling water flow rate max/min m³/hr: ~ 26 Cooling water design temperature °C: inlet temperature 4-12 (C086-TECH-Z-FD-0001) Cooling water design pressure max/min bar g: 14; test pressure 21 Leak detection system: yes Winding temperature sensors type/number of: PT100 Vibration detectors type/number of: yes; Bently Nevada-series 3300 Heat exchanger material: CuNi10Fe Bearing drive end type/number of: Zollern / ZMZLB 22-250 Bearing non drive end type/number of: Zollern / ZMZLQ 22-250 Thrust bearing type/number of: NA Allowed axial thrust N: 0, no axial bearing in generator Bearing lubrication system incl./not incl.: lube oil supply by gas turbine oil system Lubricant ISO VG: cc. DIN 51 515, ISO viscosity class VG46 Bearing temperature detectors type/number of: one duplex RTD per bearing Lubrication oil pressure bar g: 1.1 - 3.5 Lubrication oil temperature °C: 55 Sound pressure level Lp dBA: 80 +3 dB tolerance Coupling type: forged flange coupling Painting specification NORSOK / other: NORSOK as amended by C086-TECH-M-SA-007 Exciter Type and manufacturer: DEV55G16 / VUES Rated current A: 270 Rated voltage V: 242 Insulation class stator/rotor: F / F Temperature rise class stator/rotor: B / B Pilot exciter rated current A: 7.5 Pilot exciter rated voltage V: 56 Excitation system description, enclosure: AC exciter with PMG; BGU bridge Automatic Voltage Regulator Type and manufacturer: Basler DECS 200 N Voltage stability, full operating range ±%: 0.25% (see note 1) Voltage drift, full operating range ±%: 0
