Overview
In many industrial and public industries, explosion hazards are ever-present, e.g. the chemicals industry, refineries, on drilling platforms, gas stations, feed manufacturing and sewage treatment plants. The risk of explosion is always present when gases, fumes, mist or dust are mixed with oxygen in the air in an explosive ratio close to sources of ignition that are able to release the so-called minimum ignition energy. In the chemical and petrochemical industries in particular, when crude oil and natural gas are being transported, or in mining, milling (e.g. grain and granular solids), explosion can result in serious injury to persons and damage to equipment. To ensure safety in these areas, legislators in most countries have implemented appropriate stipulations in the form of laws and regulations based on national and international standards. Explosion-protected equipment is designed such that an explosion can be prevented when it is used properly. The explosion-protected equipment can be designed in accordance with various types of protection.
The local conditions must be subdivided into specified zones by the user with the assistance of the responsible authorities in accordance with the frequency of occurrence of an explosion hazard. Device (equipment) categories are assigned to these zones. The zones are then subdivided into possible types of protection and therefore into possible equipment (product) types.
Classification of zones
Areas subject to explosion hazard are divided into zones. Zoning is based on the presence time of explosive substances and probability of explosion. Information and specifications for classification of the zones are laid down in the following standards:
• GB 3836.14, IEC/EN 60079-10-1 for gas atmospheres
• GB 12476.3, IEC/EN 60079-10-2 for dust atmospheres
Application
The explosion-proof motors are often used in the following industries to prevent explosion hazards that result in serious injury to persons and severe damage to property.
• Chemical and petrochemical industry
• Production of mineral oil and gas
• Gas works
• Gas supply companies
• Petrol stations
• Coking plants
• Mills (e.g. corn, solids)
• Sewage treatment plants
• Wood processing (e.g. sawdust, tree resin)
• Other industries subject to explosion hazards
Product Detail
Siemens series high efficiency dust explosion-proof three-phase asynchronous motor is totally enclosed, self-fan cooled high efficiency motor. The products meet the requirements of the GB18613-2023 efficiency of energy efficiency grade 3. Dust explosion-proof motor can be used for food or forage machine, wood machine, flour machine or storage, as well metal, chemicals, synthetic resin, agricultural products and all kinds of combustible dust places such as fiber, fuel and so on. Detailed types of dust refer to "dust characteristics example," but this series motors are not suitable for gas or underground coal mine with combustible dust and coal mine ground device with electrical
equipment, also can't be used in place with explosive dust and spontaneous combustion substances (e.g. phosphorus powder) but can burn without oxygen from the atmosphere. Siemens dust explosion-proof motor's performance fulfill GB 12476.1-2013 "Combustible dust environment for electrical equipment -part 1: General requirements" and GB 12476.5- 2013 "Combustible dust environment for electrical equipment - Part 5: Housing protection type" tD "", suitable for explosive dust
environment Zone 21 or zone 22.
Environmental
1. Degrees of motor protection IP65 (IEC 60034-5);
2. Altitude shall not exceed 1000m above sea-level (IEC 60034-1);
3. Allowed air temperature between -20 ºC and 40 ºC (IEC 60034-1);
4. Permitted relative humidity:
• -20 ºC ≤ T ≤ 20 ºC:100 %
• 20 ºC < T ≤ 30 ºC:95 %
• 30 ºC < T ≤ 40 ºC:55 %
Ex-Mark
Construction and mounting type
Notes
:
1)
At outdoor application, the using of protective cover (option code H00)
is recommended;
2)
At out door application the protection of shaft again jet-water is
recommended.
Certificates
Transport
FAQ
Q: What is your MOQ of this item?
A: 1PC.
For the first time cooperation, we accept trial sample order.
Q: What's your payment terms?
A: 30% T/T deposit, 70% balance before shipment or L/C at sight.
Q: What's the delivery time?
A: 30-45 days after receiving your L/C or T/T deposit.
Q: How long is your warranty?
A: 12 months after receiving B/L.