Overview

This document provides detailed technical data and mounting dimensions for the YLKK series of vertical high-voltage three-phase asynchronous motors. The motors are designed for 6kV and 10kV voltage classes with protection ratings IP44, IP54, and IP55.

1. Technical Specifications

The technical data is organized by motor type, rated power, speed, current, efficiency, power factor, locked rotor current and torque, maximum torque, and weight. The motors cover a wide range of power outputs from 185 kW up to 3150 kW for 6kV motors and up to 2500 kW for 10kV motors.

Key Parameters

• Rated Power: 185 kW to 3150 kW (6kV), 220 kW to 2500 kW (10kV)
• Rated Speed: Various speeds including 1480, 980, 740, 590, and 490 r/min depending on pole number
• Rated Current: Ranges from approximately 16.7 A to over 359 A for 6kV motors, and 16.7 A to 171.8 A for 10kV motors
• Efficiency: High efficiency values ranging from about 90.8% to 95.8%, increasing with motor size and power
• Power Factor (cosφ): Typically between 0.70 and 0.88, improving with motor rating
• Locked Rotor Current: Approximately 5.5 to 7.0 times rated current
• Locked Torque: About 0.6 to 0.8 times rated torque
• Maximum Torque: Approximately 1.8 times rated torque
• Weight: From around 2650 kg to over 10950 kg depending on model and rating

Voltage and Protection Ratings

• 6kV motors available with IP44, IP54, and IP55 protection
• 10kV motors also available with IP44, IP54, and IP55 protection

2. Motor Types and Pole Numbers

The motors are categorized by type codes (e.g., YLKK3551-4, YLKK4001-4) where the suffix indicates the number of poles (4, 6, 8, 10, 12). The pole number affects the rated speed and electrical characteristics.

3. Mounting and Overall Dimensions

Mounting dimensions are provided for frame sizes 355, 400, 450, 500, 560, and 630. Dimensions vary with pole number and voltage class.

Key Mounting Parameters

• Frame Numbers: 355, 400, 450, 500, 560, 630
• Poles: 4, 6, 8, 10, 12 depending on frame
• Dimensions: Parameters such as N, P, M, D, E, F, G, T, LA, AC, AD, L, AF are specified in millimeters, defining shaft height, mounting hole spacing, shaft diameter, and overall length.

For example, frame 355 with 4 or 6 poles has shaft height (N) of 880 mm, overall length (L) of 2300 mm, and weight around 2650 kg. Larger frames have proportionally larger dimensions and weights.

4. Performance Characteristics and Recommendations

• The motors exhibit high efficiency and power factor suitable for industrial high-voltage applications.
• Locked rotor current and torque values indicate robust starting performance.
• Maximum torque approximately 1.8 times rated torque ensures good overload capacity.
• Weight and size increase with power rating and frame size, important for installation planning.

Summary

The YLKK series motors are designed for high-voltage industrial applications with a broad range of power ratings and speeds. They offer high efficiency, good power factor, and strong starting torque characteristics. The detailed mounting dimensions facilitate proper installation planning. Protection ratings IP44, IP54, and IP55 provide options for different environmental conditions.