Industrial/Marine MJ_ series
20Pages

Three Phase Synchronous Generators 160 - 900 FRAME SIZES INDUSTRIAL / MARINE APPLICATIONS

@ MarelliGenerators @ MarelliService'

CONTENT Page AVAILABLE VOLTAGES (SPECIAL VOLTAGES) 5 INSULATION, IMPREGNATION AND PROTECTIVE TREATMENT OF WINDING 5 VENTILATION AND DIRECTION OF ROTATION 5 BEARINGS AND OVER SPEED 5 THREE PHASE SHORT CIRCUIT CURRENT 7 AUTOMATIC VOLTAGE REGULATOR SPECIFICATIONS 7 SELECTION GUIDE - INDUSTRIAL APPLICATION / LOW VOLTAGE 8 SELECTION GUIDE - INDUSTRIAL APPLICATION/MEDIUM VOLTAGE 10 SELECTION GUIDE - INDUSTRIAL APPLICATION/HIGH VOLTAGE 12 SELECTION GUIDE - MARINE APPLICATION / LOW VOLTAGE 14 SELECTION GUIDE - MARINE APPLICATION / LOW VOLTAGE / WITH EXCHANGER 16

THE COMPANY Marelli Motori S.p.A. is an Italian manufacturer of electrical machines with a tradition dating back to 1891. Today Marelli Motori is recognized internationally as a leading supplier of generators and electric motors. MarelliGenerators is the company brand specifically designed to offer a complete selection of synchronous machines for low, medium and high voltage systems up to 15 kV. Fields of applications include conventional power, renewable energy and marine industry. A wide range of standard and customised solutions is provided for industrial gen-sets, cogeneration,...

STANDARDS All generators are designed in compliance with: EN 60034-1; BS 4999-5000; VDE 0530, NF 51-100; NF 51-111; OVE M-10; NEMA MG 1.22, and conform to EU rules and are CE marked. The marine ranges are type approved by DNV. On request MarelliMotori is able to supply UL/CSA certified generators (for the US market and the Canadian market). VOLTAGE AND FREQUENCY The generators in standard configuration can operate at 50 Hz and 60 Hz. Different voltages are available on request. Frame Size Series star Parallel star Series delta Contact Marelli Motori Contact Marelli Motori 355 MB (6 leads...

OPERATING CONDITIONS Overloads During continuous duty (S1), the following overloads are allowed : 10% for 1 hour 15% for 10 minutes 30% for 4 minutes 50% for 2 minutes These overloads must be occasional and followed by one hour of running at normal load or less. Stand-by ratings are based on continuous supply of loads for any utility power failure. No overloads are allowed in stand-by duty. Single phase operation Three phase (12-wire) wound generators can be reconnected and derated to 66% for single phase operation (with a zig-zag connection). Otherwise generators with dedicated (4-wire)...

EXCITATION SYSTEM The generators are self-exciting, by means of a brushless type excitation system. The voltage is maintained within ±0,5% of the nominal value in steady state condition with a balanced and non distorting load. Auxiliary winding The excitation system of generators from frame size 200 to 450 is fed by an auxiliary winding which gives a better response to the variation in loads and sustains the power supply in the case of a short-circuit. Auxiliary winding on the 160 frame is available on request. Permanent Magnet Generators (PMG) The generators from frame size 225 mm and...

SELECTION GUIDE - INDUSTRIAL APPLICATION / LOW VOLTAGE 400V / 50Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty Stand by 125/40 105/40 80/40 163/27 150/40 ΔT cl. H 480V / 60Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty Stand by 125/40 105/40 80/40 163/27 150/40 ΔT cl. H on request on request on request on request : 690 V recommended : 690 V only. For different voltage please contact MarelliMotori. These generators are dedicated for 50 Hz or 60 Hz. For available voltage and performance when operating at different frequency contact MarelliMotori....

SELECTION GUIDE - INDUSTRIAL APPLICATION / LOW VOLTAGE 400V / 50Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty 125/40 105/40 80/40 ΔT cl. H ΔT cl. F ΔT cl. B 480V / 60Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty 125/40 105/40 80/40 ΔT cl. H ΔT cl. F ΔT cl. B on request on request on request on request on request on request on request on request on request on request on request on request on request on request on request on request : 690 V recommended. These generators are dedicated for 50 Hz or 60 Hz. For available voltage and performance when...

SELECTION GUIDE - INDUSTRIAL APPLICATION / MEDIUM VOLTAGE 3000V / 50Hz Type 6000V / 50Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty 80/40 105/40 80/40 ΔT cl. B ΔT cl. F ΔT cl. B 6600V / 60Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty 80/40 105/40 80/40 ΔT cl. B ΔT cl. F ΔT cl. B Ratings refer to following conditions: balanced non-deforming load, altitude 1000 m a.s.l., minimum power factor 0,8. All generators are dedicated for 50 Hz or 60 Hz. For available power and speed contact Marelli Motori

SELECTION GUIDE - INDUSTRIAL APPLICATION / MEDIUM VOLTAGE 3000V / 50Hz Type 6000V / 50Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty 80/40 105/40 80/40 ΔT cl. B ΔT cl. F ΔT cl. B 6600V / 60Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty 80/40 105/40 80/40 ΔT cl. B ΔT cl. F ΔT cl. B Ratings refer to following conditions: balanced non-deforming load, altitude 1000 m a.s.l., minimum power factor 0,8. All generators are dedicated for 50 Hz or 60 Hz. For available power and speed contact Marelli Motori

SELECTION GUIDE - INDUSTRIAL APPLICATION / HIGH VOLTAGE 11000V / 50Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty 105/40 80/40 ΔT cl. F ΔT cl. B 13800V / 60Hz Power rating [kVA] Temp. rise / Ambient temp. [°C] Continuous duty 105/40 80/40 ΔT cl. F ΔT cl. B Ratings refer to following conditions: balanced non-deforming load, altitude 1000 m a.s.l., minimum power factor 0,8. All generators are dedicated for 50 Hz or 60 Hz. For available power and speed contact Marelli Motori