M2GP无火花防爆电机是防爆电机的一种形式，这种电机在正常运行时不能产生电弧或火花，不能够点燃周围的爆炸性气体环境，也不太可能发生能引起点燃的故障。这是在设计中通过规定定转子间隙、电气间隙和间隔、爬电距离、风扇电阻及线速度、定转子表面温度、出线盒及电缆引入装置的密封性来保证的。所以电机在运行时不能打开，以防止外部气体进入。

质量承诺

ABB严格的质量管理及遍布全球的快速反应服务网络确保了用户售后服务及支持，这些全代表了可以信赖的ABB电机公司所体现的固有价值及承诺。

煤炭、石油和化学等工厂，在生产过程中有可能产生各种可燃性气体或蒸汽。这些物质与空气混合后就形成了具有爆炸性危险的混合物，如果达到爆炸浓度，又遇到火源时就引起爆炸的严重事故。所以EXnA||T3-M2GP无火花型系列电动机在试验和认可中按IEC60079-15严酷考核。

EXnA||T3-M2GP无火花型系列电动机在2003年1月24日通过国家防爆电气产品质量监督检验中心认可，并同时取得颁发的防爆合格认证书。

标准

无火花型电动机符合下列标准

在正常运行时，不可能出现爆炸性气体环境，如果出现也是偶尔发生并且仅是短时间存在的场所。

适用防爆危险区2区环境的工厂，2区为偶然爆炸区域。使用场所中爆炸性气体或蒸汽的类别是戊烷、甲基环己烷、石油（包括汽油）、石脑油、柴油、煤油、己烷、乙硫醇、戊醇、氯丁烷、四氢噻吩。

使用时的温度组别为T3，电动机及设备的表面温度为200℃，场所的环境温度-15℃-40℃。
技术特点

效率高

达到欧洲CEMEP-EU效率等级电机标准二级值，符合中华人民共和国国家标准GB18613-2002中小型三相异步电动机能效限定值。

双频宽电压

电压范围220V-690V，适用50HZ和60HZ电源。

噪声低
通过优化电磁设计、通风状况、结构尺寸及技术，M2QP系列电动机的噪声低。

轴承负载能力高

标准电动机选用深沟轴承，寿命长，80-225中心高电动机为型润滑，250-355设有加油装置。

可靠性好

电动机为全封闭风冷结构，防护等级IP55，材料及工艺符合环境要求。电动机机械强度高，坚固耐用，防锈防腐性强。绕组可靠性好，采用F级绝缘结构，B极考核。并可根据用户需要增加PTC热敏电阻或热敏开关。

起动方式：满压起动、Y-△起动或电抗起动

传动方式：可采用弹性联轴器正齿轮传动

绝缘、升温：F级。但定子绕组温升限值80K，即按B级考核（电阻法）。轴承允许温度不超过95℃（温度计法）。

冷却方式：IC411

使用条件：海拔不超过1000M
环温在-15℃-40℃
电压、频率和工作方式
工作电压：220-240V
380-420V
660-690V
额定频率：50HZ/60HZ
工作方式：连续（S1）
轴承：日本NSK轴承


Various kingds of flammable gases or vapor may possibly exist in coal,petrolerm and chemical industries,etc.during production.When these substances mix with air,they will form an explosive mixture.If the mixture reaches uts explosive limit and tinder is occurred,a serious explosion will certainly happen.Therefore,Ex nA/EEx nA Ⅱ T3-M2GP non-sparking motors are severely examined according to IEC60079-15during the test.
Ex nA/EEx nA ⅡT3-M2GP non-sparking motors have been approved by National Quality supervison and Inspection Center of flameproof products,and achieved Certificate of Conformity.
Ex nA/EEx nA Application areas of Ex nA/EEx nA motors
Technical Features
High efficiency
Be up to the class 2 of CEMER-EU standard and the efficiency of 3 phase small &medium induction motors of Chinese standard GB18613-2002
Dual frequency,wide voltage
The range of voltage is 220V-690V*, 50Hz and 60Hz supplies applicable.
Low noise
The M2GP range has been designed to minimize motors noise levels,by means of improving magnetic and electrical design,ventilator condition,and structure assembling size and technology.
Bearings with high load capacity
Standard motors are provided with deep-groove ball bearings,the lifetime is extended.Motors in sizes 71-225 are greased for life,and those in sizes 250-355 have a regreasing device as a standard.
High reliability
Motor are to totally enclosed fan coolde IP55.Materials and procedures satisfy with environmental requirements.The motor is mechanically strong and corrosion resistant.Windings have a good reliability in Class F insulation,and Class B inspection.PTC thermistors or therm-swithches are available on request.
The rated voltage of frame size H100 and below is 220V-480V,see EX certificate table (Page 9)
Working conditions
Ambient temperature:to be altered with the change of seasons,but do not exceed -40℃~+40℃*
Altitude:to be used lower than 1,000 meters above sea level.
Rated frequency: 50Hz/60Hz
Rated voltage: 220V~690V
Duty:Continuous(S1)
Method of Starting:can be started on full voltage motors and can be started with Y- starter or reactor.
Driving method: flexible couping or spur gear can be used for driving.
Insulation and temperature rise:
class F.But the temp.rise of the stator windings is limited at 80K,i.e.treated as class B(resistance method).Permissible working temp.of bearing shourld not be over 95℃(thermometer method).
Cooling method: IC411
Ex certification applies to a fix speed motor without frequency convertor.
*Direct starting under range -40℃~15℃ is prohibited.
Appropriate meaures should be taken to preheat motors to keep the temperature on the motor enclosure above -15℃by space heaters and heating stator windings with low voltage supply for a certain time.This direst current generating in the windings shall not exceed the rated current on the nameplate.