YBX3 Series High-Efficiency Flameproof Three-Phase Asynchronous Motors

1. Product Overview

The YBX3 series low-voltage high-efficiency flameproof three-phase asynchronous motors are self-developed and self-designed by our company. They are totally enclosed, self-fan-cooled, squirrel-cage, high-efficiency flameproof three-phase asynchronous motors. These motors feature excellent performance, safe and reliable operation, lower vibration and noise compared with similar products, and comply with environmental protection requirements.

2. Applications

Suitable for places with explosive gas mixtures in industries such as petroleum, chemical engineering, mining, metallurgy, electric power, and machinery. They are ideal power equipment.

3. Executive Standards

3.2 GB/T 997 Classification of Types of Construction, Mounting Arrangements and Terminal Box Positions for Rotating Electrical Machines (IM Codes)

3.3 GB/T 1032 Test Methods for Three-Phase Asynchronous Motors

3.4 GB/T 1993 Cooling Methods for Rotating Electrical Machines

3.5 GB 1971 Terminal Markings and Direction of Rotation of Rotating Electrical Machines

3.6 GB/T 4772 Dimensions and Output Power Ratings for Rotating Electrical Machines

3.7 GB/T 4942.1 Degrees of Protection Provided by the Integral Enclosure of Rotating Electrical Machines (IP Codes) - Classification

3.8 GB 10068 Mechanical Vibration of Electrical Machines with Shaft Heights 56 mm and Above - Measurement and Limits of Vibration

3.9 GB/T 10069.1 Methods and Limits for Noise Measurement of Rotating Electrical Machines - Part 1: Methods for Noise Measurement of Rotating Electrical Machines

3.10 GB/T 10069.3 Methods and Limits for Noise Measurement of Rotating Electrical Machines - Part 3: Noise Limits

3.11 GB 14711 Safety Requirements for Small and Medium-Sized Rotating Electrical Machines

3.12 GB 3836.1 Explosive Atmospheres - Part 1: General Requirements for Equipment

3.13 GB 3836.2 Explosive Atmospheres - Part 2: Equipment Protected by Flameproof Enclosures "d"

3.14 GB 3836.3 Explosive Atmospheres - Part 3: Equipment Protected by Increased Safety "e"

3.15 GB 50058 Code for Design of Electrical Installations in Explosive and Fire Hazardous Environments

4. Basic Features

4.1 Frame Size: 63-355

4.2 Rated Power Range: 0.12-315kW

4.3 Number of Poles: 2~16 poles

4.4 Rated Voltage: 380V, 660V, 380/660V, 400V, 690V, 400/690V.

(Note: For the basic series, motors with power ≤3kW and voltage 380V adopt "Y" connection; motors with power >3kW and voltage 380V adopt "△" connection. Motors can also be manufactured for special voltages.)

4.5 Rated Frequency: 50Hz or 60Hz

4.6 Insulation Class: 155 (Class F)

4.7 Efficiency: Level 2. Complies with Level 2 energy efficiency specified in GB18613-2012 Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Small and Medium-Sized Three-Phase Asynchronous Motors.

4.8 Cooling Method: IC411

4.9 Mounting Type: IMB3 (Other mounting types can also be manufactured.)

4.10 Protection Class: IP55

4.11 Duty Type: S1

4.12 Explosion-Proof Mark: Ex d ⅡB T4 Gb, Ex d ⅡC T4 Gb

4.13 Standard Configuration: Indoor use

Optional Configurations: Outdoor use (W), outdoor with moderate corrosion resistance (WF1), outdoor with strong corrosion resistance (WF2), indoor with moderate corrosion resistance (F1), indoor with strong corrosion resistance (F2), tropical wet climate (TH), tropical dry climate (TA), outdoor tropical wet climate (THW), outdoor tropical dry climate (TAW).

4.14 Main Terminal Box

For frame sizes 80-355, the main terminal box is located on the top of the motor (viewed from the motor shaft extension end). The wire outlet can be adjusted in four directions. However, when the terminal box outlet faces backward (toward the non-shaft extension end), due to the influence of the lifting ring, it is necessary to lift the motor in place at the installation site, remove the lifting ring, open the terminal box cover, loosen the connecting bolts between the terminal box and the frame, and adjust the terminal box outlet to face backward.

Standard Configuration for Terminal Box Inlet: Bell mouth inlet.

Optional Configurations: Threaded pipe wiring or explosion-proof gland inlet.

5. Ordering Guide

5.1 Factors to Consider When Selecting a Motor

□ Explosion-Proof Class: Ex d ⅡB T4 Gb, Ex d ⅡC T4 Gb, etc.

□ Voltage: 380V, 660V, etc.

□ Frequency: 50Hz, 60Hz, etc.

□ Mounting Type: IMB3, IMB35, etc.

□ Operating Environment: Indoor, outdoor, ambient temperature, altitude, etc.

□ Protection Class: IP54, etc.

□ Mechanical characteristics and moment of inertia of the driven equipment.

□ Connection method between the motor and the driven equipment.

□ Starting method, starting frequency, and starting voltage drop, etc.

□ Duty Type: S1 or others.

□ Thermal Classification: 155 (Class F) or others.

□ Motor Rotation Direction: Clockwise, counterclockwise, bidirectional.

□ Terminal Box Position: Top-left, top-right, upper-right facing downward, upper-left facing downward.

□ Terminal Box Inlet Type: Bell mouth, threaded pipe wiring, gland.

5.2 Example

Requirements: Frame center height 355, 220kW, 2-pole frame with base, end cover without flange, flameproof type for factory use (Group ⅡB, Temperature Class T4), 380/660V, clockwise rotation, bell mouth inlet.

Motor Marking:

Converted to contract terms: YBX3-355M1-2 220kW 380/660V 50Hz IMB3 ExdⅡBT4Gb Bell Mouth Inlet.

5.3 For special requirements such as voltage, frequency, protection class, rotation direction, mounting type, double shaft extension, noise, vibration limits, explosion-proof mark, and terminal box inlet type, manufacturing can only be carried out after signing a technical agreement.

5.4 The data in this catalog is subject to change with technological progress without prior notice. Please pay attention to the catalog version.