56007//AC MOTR;315 KW,690 V,SQUIRREL CAGE ,CRUS

Product Title:

315 kW, 690V Flameproof Squirrel Cage AC Induction Motor – Frame 355ML (Inverter/VFD Duty)

Short Description:

Heavy-duty 315 kW, 690V, 4-Pole flameproof squirrel-cage AC induction motor designed for severe industrial crusher applications. Engineered for VFD/inverter operation with Class F insulation, IP55 enclosure rating, and IC511 cooling.

Detailed Product Specifications:

1. General & Operational Parameters

• Application: Tertiary Crusher

• Motor Type: Flameproof Squirrel Cage AC Induction Motor

• Power Rating: 315 kW

• Rated Stator Voltage: 690 V

• Rated Stator Current: 320 A

• Number of Poles: 4 Nos.

• Frequency: 50 Hz ± 6%

• Duty Type: S1 (Continuous)

• Number of Starts per Hour: 2 Cold / 1 Hot

• Frame Size: 355ML

• Mounting: IM B3 (Foot Mounted)

• Shaft Extension: Single Standard

• Ambient Temperature: 50 °C

2. VFD / Inverter Duty Capabilities

• VFD Suitable: Yes

• Stress Category: Minimum Stress Category "C" (Severe) / IVIC-C (Phase-to-Phase & Phase-to-Ground) as per IEC 60034-18-41 for 2-level converters

• Voltage Rise Time: < 0.1 µs

• Carrier Switching Frequency: 50 Hz

• Total Harmonic Distortion (THD): < 5%

• Bearing Insulation: Insulated bearing or end shield provided for VFD duty operation

• Encoder Provision: Suitable for NDE side encoder mounting

3. Insulation & Enclosure Specifications

• Enclosure Rating: IP 55

• Cooling Method: IC 511

• Insulation Class: Class F (Temperature rise limited to Class B)

• Phase Separator Insulation: Minimum Class F

• Overhanging Insulation: Minimum Class F

• Winding Wire Grade: Inverter grade dual-coat enameled high-grade copper wire

• Impregnation: Vacuum Pressure Impregnation (VPI)

• Site Condition Readiness: Designed for ambient air containing conducting dust

4. Accessories & Auxiliary Features

• Temperature Monitoring: 6 x RTD (Stator Winding), 2 x BTD (Bearings) – Pt100 elements

• Thermistors: Provided on stator winding

• Space Heater: Included

• Terminal Box Configuration:

  • Rotatable in 90° steps for multi-directional cable entry

  • Separate terminal boxes provided for Space Heater and Thermistors

• Lubrication & Bearings: Re-greasing facility provided

5. Marking & Nameplate Features

Stainless steel rating plate indelibly marked with Inverter Series details, including:

• Type, frame size, kW rating at 50 °C ambient

• Serial number, voltage, current, frequency, RPM

• Number of rotor bars & stator slots, winding connection

• Weights (Motor, Stator, Rotor), GD² value, full load power factor

• Bearing details, re-greasing frequency, quantity, and grease type

• Degree of protection (IP55), Class of insulation, Duty, and Efficiency

6. Technical Documentation Provided

• General Arrangement (GA) Drawing

• Torque-Speed Curve

• Thermal Capability Curve (Hot/Cold)

• Load vs. Efficiency Curve

• Current vs. Speed Curve

• Negative Phase Sequence Withstand Curve