Selection guide - Low Voltage

Content Generator applications Rating definition Operating conditions Connections ODP generators: MXB - MJB | 50 Hz 2. Standard winding 6 poles (rating: 380 - 400 - 415 V) 3. Standard winding 8 poles (rating: 380 - 400 - 415 V) 4. Single phase - parallel star - std. winding 4 poles (rating: 190 - 200 - 208 V) 5. Single phase - zig-zag - std. winding 4 poles (rating: 220 -230 V) TEAAC generators: MJV | 50 Hz TEWAC generators: MJR | 50 Hz 1. 4 poles (rating: 380 - 400 - 415 - 440 V) ODP generators: MXB - MJB | 60 Hz 1. Standard winding 4 poles (rating: 380 - 416 - 440 - 460 - 480 V) 2. Standard...

Key TEWAC Totally Enclosed Water to Air Cooled ODP Open Drip Proof TEAAC Totally Enclosed Air to Air Cooled

Operating conditions Rating definition Prime rating Prime rating is the maximum power available at a variable load for an unlimited number of hours. Marelli Motori low voltage generators are class H insulated as a standard feature. Under these conditions three different classes of temperature rise are allowed and are here below represented as over-temperature above the reference ambient temperature (ref. amb. Temp. is 40°C as defined in IEC 60034): Class B temperature rise: generator can reach a temperature rise of 80° above 40° ambient temperature. Class F temperature rise: generator can reach...

Overloads The nominal power factor is 0,8 lagging. For different power factor values the following derating factors must be applied. This overloads must be occasional and followed by one hour of running at normal load or less. Stand-by ratings are based on conti-nuos supply of loads for any utility power failure. No overloads are allowed in stand-by duty. 10% for 1 hour Overload during S1 15% for 10 minutes continuous duty 30% for 4 minutes Single phase operation MXB The rated outputs of MXB three-phase (12-wire) wound generators, when reconnected for single phase operation, can be obtained by...

12 Leads / Winding code M0 Voltages L-L Voltages Frequency Series Delta (High Delta) Voltages Frequency Series Star (High Wye) Key * Voltage not available on MJB 400 frame - neutral not available

Key * voltage not available on MJB355MB4, MJB400MB4 - neutral not available (l) Voltage not availabe on MXB generators

6 Leads / Winding code 17 - 80 Voltages

ODP Generators MXB - MJB - Standard winding 4 poles (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

(1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - Standard winding 4 poles (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

(1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - Standard winding 6 poles

ODP Generators MXB - MJB - 4 poles - Single phase - parallel star - std. winding (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

(1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - 4 poles - Single phase - parallel star - std. winding (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

(1' Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - 4 poles - Single phase - zig-zag - std. winding MXB - MJB - 4 POLES - single phase 50 Hz (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

TEAAC Generators MJV - LV 4 poles

TEAAC Generators MJV - LV 6 poles

Continuous duty rating kVA @ Temp. rise over 40 °C ambient temp. 125 AT 105 AT

TEWAC Generators MJR - LV 4 poles Continuous duty rating kVA @ Temp. rise over 40 °C ambient temp. 125 AT 105 AT

Continuous duty rating kVA @ Temp. rise over 40 °C ambient temp. 105 AT Cl. F

TEWAC Generators MJR - LV 6 poles

ODP Generators MXB - MJB - Standard winding 4 poles standard winding Moment of Inertia Weight Continuous duty rating Efficiency (1) Stand-by duty rating kVA @ Temp. rise over 40 °C ambient temp. 125 AT 105 AT 80 AT (1' Value referred to continuous duty rating / 125 AT / Temperature rise class H

(1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - Standard winding 4 poles (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

(1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - Standard winding 4 poles (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MJB - Standard winding 6 poles MJB - 6 POLES 460 V standard winding Continuous duty rating kVA @ Temp. rise over 40 °C ambient temp. Stand-by duty rating Moment of Inertia Weight J

ODP Generators MJB - Standard winding 8 poles

MJB - 4 POLES380 V dedicated winding R3 Leads Continuous duty rating kVA @ Temp. rise over 40 °C ambient temp.

ODP Generators MXB - MJB - 60 Hz dedicated winding

ODP Generators MXB - MJB - 4 poles - Single phase - parallel star - std. winding (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

(1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - 4 poles - Single phase - parallel star - std. winding (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

(1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - 4 poles - Single phase - parallel star - dedicated winding

(1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - 4 poles - Single phase - zig-zag - std. winding (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

(1) Value referred to continuous duty rating / 125 AT / Temperature rise class H

ODP Generators MXB - MJB - 4 poles - Single phase - zig-zag - std. winding (1) Value referred to continuous duty rating / 125 AT / Temperature rise class H