Brief Introduction

Explosion proof motors are particularly widely used in coal mines, oil and gas, petrochemicals, and chemical industries, as these industries typically involve the handling and operation of flammable and explosive substances, with extremely high requirements for equipment safety. In addition, YBX3 series zone 2 motor also plays an important role in industries such as textiles, metallurgy, urban gas, transportation, grain and oil processing, paper-making, and pharmaceuticals, ensuring the safety and stability of the production process.

Explosion proof motors can be divided into the following three types and their composite types based on their basic principles of meeting explosion-proof requirements:

1. Explosion proof type (Type B)

A motor that does not cause an external explosive mixture explosion when an explosion occurs inside the motor. The motor casing has sufficient mechanical strength (high-grade cast iron, steel plate as the casing) to withstand explosive pressure and external impact without damage; All gaps that make up the entire explosion-proof shell, such as end caps and stoppers, must comply with the structural parameters (gaps and lengths) of the explosion-proof joint surface; Requirements for junction boxes, incoming devices, etc; Control the temperature of the outer shell surface to prevent it from reaching dangerous temperatures.

2. Increased safety type (Type A)

The motor should have good sealing and meet the protection level requirement of IP55; Electromagnetic design should consider reducing temperature rise; Control the time it takes for the rotor to reach a dangerous temperature during stalling, and equip it with an automatic control electrical device; Improve the inter turn, ground and phase to phase test voltage of winding insulation; Improve the inter turn, ground and phase to phase test voltage of winding insulation; Improve the reliability of conductor connections; Control the minimum unilateral clearance between the stator and rotor. In short, to prevent the occurrence of accidental sparks, arcs, or dangerous temperatures from both structural and electrical aspects, thereby improving the safety level of operation.

3. Positive pressure type (P-type)

Inject positive pressure fresh air or inert gas (such as nitrogen) into the casing to prevent external explosive mixtures from entering the explosion-proof motor inside.

Scope of use: Explosion proof and positive pressure types are suitable for all explosive hazardous areas, and explosion-proof motors (type B) are widely used in China. The manufacturing cost and price of the increased safety YBX3 series zone 2 motor are lower than those of the explosion-proof type, and it is only suitable for Zone 2 locations.

Purchasing Guide

Conduct environmental analysis: Understand the nature, level, and temperature requirements of the explosion.

Determine motor type: Select the corresponding explosion type (gas, dust, or coexistence) based on environmental classification.

Choose explosion level: Select based on the nature and level of the explosion present in the actual environment.

Consider temperature rating: Ensure that the temperature rating of the motor meets environmental requirements.

Refer to product certification: Ensure that the selected motor meets the safety standards and certification requirements of the relevant country or region.

Pay attention to motor performance: consider the power, speed, insulation level, and protection level of the motor.

Technical Specifications

Production Overview

Bearings	Metal gland	PT100	Wooden box
Rolling bearings are easy to use and maintain, reliable in operation, have good starting performance, and have high load-bearing capacity at medium speeds. Therefore, rolling bearings are widely used in the electric motor industry.‌	According to the different functions and uses of cable glands, they can be divided into ordinary glands and explosion-proof glands. Explosion proof gland heads are specifically used for explosion-proof equipment such as explosion-proof distribution boxes and explosion-proof instrument boxes, and their most important function for YBX3 series zone 2 motor is explosion-proof and isolation. ‌‌	For motor temperature measurement and other industrial sites, three wire platinum resistors are usually used, and this wire based PT100 has better accuracy. The value of 100 after PT indicates that its resistance is 100 ohms at 0 ℃ and approximately 138.5 ohms at 100 ℃. ‌	In general, the outer box of YBX3 series zone 2 motor can be made of materials such as cardboard boxes, wooden boxes, etc. It is necessary to ensure that the box has sufficient strength and cannot be too light to withstand the required pressure during transportation. If the specifications of the exported motor are large or the weight is relatively heavy, professional transportation tools such as wooden boxes, isolation boards, hanging devices, etc. need to be used for protection. Dimensions and Parts' codes