Overview

This technical document provides detailed specifications, ratings, dimensions, and mechanical features for a series of electrical windings identified as "Winding 311 / 0.8 Power Factor" used in three-phase and single-phase power applications. The data includes electrical ratings at various voltages, mechanical dimensions, coupling details, and mounting provisions.

1. Electrical Specifications

Power Ratings and Voltages

• Rated power factor: 0.8
• Continuous duty rating: /125k/40 (likely indicating 125 kVA at 40°C ambient temperature)
• Available for both 3-phase and 1-phase configurations
• Voltage ratings cover a wide range including 208V, 220V, 230V, 240V, 254V, 266V, 380V, 400V, 415V, 416V, 440V, 460V, and 480V

Power Capacities

• KVA ratings range approximately from 60 kVA up to 312.5 kVA depending on model and voltage
• Corresponding KW ratings range from about 48 kW to 250 kW
• Separate tables list KVA and KW values for different models (SLG274C through SLG274K) and voltage levels

2. Mechanical and Dimensional Data

Model Identification

• Models covered: SLG274C, SLG274D, SLG274E, SLG274F, SLG274G, SLG274H, SLG274J, SLG274K

Dimensions and Weights

• Dimensions (LxWxH) vary by model, e.g., 900x650x975 mm up to 1160x650x980 mm
• Net weights range approximately from 395 kg to 720 kg depending on model and configuration

Center Distances and Mounting

• Center distances include 406 mm, 466 mm, 530 mm, and 668 mm for various parts
• Separable side plates available in two versions: "A" with PMG (Permanent Magnet Generator) and "B" without PMG
• Drip-proof shutters are standard for marine use; non-marine versions available on request

Coupling Details

• Disc coupling with 3 plates, total thickness 3.6 mm
• Hub securing screws tightened to torque of 24.9 kgfm (244 Nm)
• Coupling dimensions and flange sizes provided for SAE numbers 1, 2, and 3

3. Electrical Connection and Configuration

• Connection types include Series Star, Parallel Star, Series Delta, and Double Delta
• Phase configurations: 3-phase and 1-phase
• Uniformly distributed through-holes (R-S and AR-AS) on specified bolt circles for mounting

4. Cooling and Environmental Features

• Air inlet and outlet dimensions and locations specified, including louvre counts (e.g., 683 and 536 louvres)
• Designed for ambient temperature operation at 40°C
• Drip-proof shutters standard for marine environments

5. Additional Mechanical Features

• Lifting lug holes of 30 mm diameter provided for handling
• Keyway dimensions and shaft extensions detailed for coupling compatibility
• Center of gravity (C of G) locations specified for balance and mounting

6. Summary of Critical Parameters

• Power factor: 0.8
• Continuous duty rating: 125 kVA at 40°C ambient
• Voltage range: 208 V to 480 V
• Power range: 48 kW to 250 kW (depending on model and voltage)
• Mechanical dimensions and weights vary by model, with detailed flange and coupling specifications
• Marine and non-marine versions available with drip-proof features

Conclusion

This document serves as a comprehensive technical reference for the selection, installation, and operation of Winding 311 series electrical machines with a 0.8 power factor. It includes essential electrical ratings, mechanical dimensions, coupling details, and environmental considerations to ensure proper application and integration in industrial or marine power systems.