What is the difference between EXE and EXD?
Ex d or “Flameproof” means that an enclosure or junction box is constructed and certified as Explosion Protected according to the “Flameproof” standard. … Ex e, on the other hand, means that the enclosure is constructed and certified as “Explosion Protected” according to the “Increased Safety” standard.
What is a explosion proof motor?
An electric motor is considered explosion-proof when it is capable of containing an internal explosion without rupturing and putting the entire industrial facility at risk.
What is Ex e protection?
Increased Safety Ex e is an explosion protection concept applied to the installation to ensure increased security against the possibility of excessive temperatures and sparks from hazardous area electrical equipment. Equipment that normally causes sparks is excluded from use within this method of explosion protection.
Where are explosion proof motors used?
Explosion proof motors are required for industrial applications with the presence of highly combustible, pervasive materials.
What is EExe?
EExe. Increased safety motors, for Zone 1. Prevent sparks, arcs or hot spots during service, including starting, by a number of constructional or dimensional provisions, and by the use of special protection devices, designed to trip within a specified time.
What is flame proof?
: resistant to damage or burning on contact with flame.
What are 4 common types of motor enclosures?
The most common types of enclosures are:
- Open Drip Proof (ODP) …
- Weather Protected (WP1 / WP2) …
- Totally Enclosed Fan Cooled (TEFC) …
- Totally Enclosed Non-Ventilated (TENV) …
- Totally Enclosed Air Over (TEAO) …
- Totally Enclosed Forced Ventilated (TEFV) …
- XP (Explosion Proof)
How can you tell if a motor is flameproof?
- Service/class temperatures.
- Reference pressure – waveform smoothing at 5kHz.
- Flame path width and gaps.
- Ignition tests with variety of explosive gas mixtures, five tests per mixture.
- Flame transmission.
- Enclosure strength.
- Enclosure must contain explosions at 1.5 times standard explosive pressure.
What is a Class 1 motor?
Based on these classifications, Class I, Division 1 motors are built to operate in environments routinely exposed to significant quantities of potentially explosive atmospheric gases or vapors. They must be built and labeled as explosion-proof.
Is IIC better than IIB?
with an explosive gas atmosphere other than mines susceptible to firedamp. Group II equipment is subdivided into three subgroups. … – Group IIB—Atmospheres containing ethylene, or gases and vapors of equivalent hazard. – Group IIC—Atmospheres containing acetylene or hydrogen, or gases and vapors of equivalent hazard.
What is ATEX EXD?
ATEX Directive 2014/34/EU is a «new approach» directive that applies to protective systems against explosions as well as all equipment used in or related to explosive atmospheres, such as electrical and non-electrical equipment, components and safety devices, control and adjustments necessary for the safe operation of …
What type of protection is Ex e equipment?
Increased Safety (Ex e): This method of protection prevents explosions by eliminating any source of ignition. Thus no arcing components are permitted.
What is type of motor?
The electric motor is mainly classified into two types. They are the AC motor and the DC motor. The AC motor takes alternating current as an input, whereas the DC motor takes direct current.
Are brushless motors explosion proof?
Available in 70-155mm frame sizes, EX motors feature an explosion-proof housing, making them suitable for use in explosive atmospheres.
Is explosion proof the same as Div 1?
The “Combustion” or “Fire” Triangle is used to classify Hazardous Locations in the Explosion-Proof industry. … Division 1 is a subset of Class I and is classified as an area where the explosive or flammable gases, vapors or liquids mentioned above can exist under normal, everyday operating conditions.