五队乡TUNGLEE交流电机51K120GU-CB带键槽

变频调速之所以比直流调速广泛运用是因为交流电机，不是变频调速原理具有优越性，变频调速只能应用于调速，而对力矩是无法做到控制的，原因很简单，直流调速的电枢和励磁不是耦合的，是分开的，这样对电枢电流和励磁电流能够做到控制。而交流调速，电枢电流和励磁电流是耦合的，是无法做到控制的， 尽管目前的变频调速具有矢量控制，也就是运用现代控制理论，通过矢量转换，将交流电机中耦合的电枢电流和励磁电流解开，从而对其进行控制，也就是仿真直流调速的原理。但是要做到直流调速的控制特性目前是很困难的。因此在轧机、造纸等对力矩要求很高行业，直流调速还是具有广泛性。而仅对速度控制，目前变频调速是可以逼真直流调速的特性，因为交流电机的优越性是直流电机无法做到的。 直流电机的电刷和体积的原因，限制了它的应用范围，变频调速可以说是由风机和水泵发展而来的，是由于风机和水泵节能的需要，变频调速是选择，不过我个人认为就目前电价和变频器的自身的价格相比，这种节能是毫无意义的，因为要把变频器的投资收回，最少需要5-6年，在这5-6年的时间里，工况还不知道要发生什么变化。 因此，变频器应用在需要调速，而对启动性能及力矩调节要求不是很苛刻的场合，而这种场合比比皆是，这才是变频调速普遍应用的原因。


五队乡TUNGLEE交流电机51K120GU-CB带键槽


NHSB90-L1-R3
NHSB90-L1-R4
NHSB90-L1-R5
NHSB90-L1-R6
NHSB90-L1-R7
NHSB90-L1-R8
NHSB90-L1-R10
NHSB90-L1-R12
NHSB90-L1-R15
NHSB90-L1-R20
NHSB90-L1-R25
NHSB90-L1-R30
NHSB90-L1-R35
NHSB90-L1-R40
NHSB90-L1-R50
NHSB90-L1-R60
NHSB90-L1-R70
NHSB90-L1-R80
NHSB90-L1-R100


NHSB115-L1-R3
NHSB115-L1-R4
NHSB115-L1-R5
NHSB115-L1-R6
NHSB115-L1-R7
NHSB115-L1-R8
NHSB115-L1-R10
NHSB115-L1-R12
NHSB115-L1-R15
NHSB115-L1-R20
NHSB115-L1-R25
NHSB115-L1-R30
NHSB115-L1-R35
NHSB115-L1-R40
NHSB115-L1-R50
NHSB115-L1-R60
NHSB115-L1-R70
NHSB115-L1-R80
NHSB115-L1-R100


五队乡TUNGLEE交流电机51K120GU-CB带键槽

五队乡TUNGLEE交流电机51K120GU-CB带键槽
一般固体材料中的声速随其温度升高而降低，有试验数据表明，热态材料每增加1C，声速下降1%。对于高温在役设备常常碰到这种情况。应选用高温专用和高温耦合剂（3－6C)，切勿使用普通。层叠材料、复合（非均质）材料。要测量未经耦合的层叠材料是不可能的，因超声波无法穿透未经耦合的空间，而且不能在复合（非均质）材料中匀速传播。对于由多层材料包扎制成的设备（像尿素高压设备），测厚时要特别注意，测厚仪的示值仅表示与接触的那层材料厚度。

五队乡TUNGLEE交流电机51K120GU-CB带键槽
如果入射激光束与试样法线的偏离角为q，由方程得(参考图3)：式中，Db1和Db2是由于试样形变和偏离q引起的衍射角的变化，方程可写为：如果没有其它误差源，只考虑q引起的误差，则Db1可由下述方程确定：保留到二阶q，可得：用同样的方法可得：(14)由此可得：(15)将方程和方程(15)代入方程，得应变误差为：(16)空间分辨率测量应变的空间分辨率由入射激光束的直径确定。



G11H100S-3;G11H100S-5;G11H100S-10;G11H100S-15;G11H100S-20;G11H100S-30;G11H100S-40;G11H100S-50; G11H100S-60; G11H100S-75;G11H100S-90;

G12H100S-75; G12H100S-90; G12H100S-100;G12H100S-120;G12H100S-150; G12H100S-165;



G11H200S-3; G11H200S-5; G11H200S-7.5; G11H200S-10; G11H200S-15; G11H200S-20; G11H200S-25; G11H200S-30; G11H200S-40; G11H200S-50; G11H200S-60;G11H200S-75; G11H200S-90;

G12H200S-20; G12H200S-30; G12H200S-40; G12H200S-50; G12H200S-60; G12H200S-75; G12H200S-80; G12H200S-90; G12H200S-100; G12H200S-120; G12H200S-150; G12H200S-165;

G13H200S-100; G13H200S-120; G13H200S-150; G13H200S-165; G13H200S-180;



G12H400S-3; G12H400S-5; G12H400S-7.5; G12H400S-10; G12H400S-15; G12H400S-20; G12H400S-25; G12H400S-30; G12H400S-40; G12H400S-50; G12H400S-60; G12H400S-75; G12H400S-90;

G13H400S-50;G13H400S-60;G13H400S-75;G13H400S-90;G13H400S-100;G13H400S-120;G13H400S-150;G13H400S-165;G13H400S-180;

G14H400S-100;G14H400S-120;G14H400S-150;G14H400S-165;G14H400S-180;



G13H750S-3;G13H750S-5;G13H750S-10;G13H750S-15;G13H750S-20;G13H750S-25;G13H750S-30H40;G13H750S-50;G13H750S-60;G13H750S-75;G13H750S-90;

G14H750S-30;G14H750S-40;G14H750S-50;G14H750S-60;G14H750S-75;G14H750S-80;G14H750S-90;G14H750S-100; G14H750S-120;G14H750S-150;G14H750S-180;

G15H750S-80;G15H750S-100;G15H750S-120;G15H750S-150;G15H750S-200;



G14H1500S-3;G14H1500S-5;G14H1500S-10;G14H1500S-15;G14H1500S-20;G14H1500S-25;G14H1500S-30;G14H1500S-40;G14H1500S-50;G14H1500S-60;

G15H1500S-50;G15H1500S-60;G15H1500S-75;G15H1500S-80;G15H1500S-90;G15H1500S-100;



G14H2200S-3;G14H2200S-5;G14H2200S-10;G14H2200S-15;G14H2200S-20;G14H2200S-25;G14H2200S-30;G14H2200S-40;

G15H2200S-3;G15H2200S-5;G15H2200S-10;G15H2200S-15;G15H2200S-20;G15H2200S-25;G15H2200S-30;G15H2200S-40;G15H2200S-50;G15H2200S-60;G15H2200S-75;G15H2200S-80;G15H2200S-90;G15H2200S-100;



G11V100S-M3;G11V100S-M5;G11V100S-M10;G11V100S-M15;G11V100S-M20;G11V100S-M30;G11V100S-M40;G11V100S-M50; G11V100S-M60; G11V100S-M75;G11V100S-M90;

GE11V100S-M60; GE11V100S-M75;GE11V100S-M90;

G12V100S-M75; G12V100S-M90; G12V100S-M100;G12V100S-M120;G12V100S-M150; G12V100S-M165;

GE12V100S-M75;GE12V100S-M90;GE12V100S-M100;GE12V100S-M120;GE12V100S-M150;GE12V100S-M165;



G11V200S-M3; G11V200S-M5; G11V200S-M7.5; G11V200S-M10; G11V200S-M15; G11V200S-M20; G11V200S-M25; G11V200S-M30; G11V200S-M40; G11V200S-M50; G11V200S-M60;G11V200S-M75; G11V200S-M90;

GE11V200S-M50; GE11V200S-M60;GE11V200S-M75; GE11V200S-M90;

G12V200S-M20; G12V200S-M30; G12V200S-M40; G12V200S-M50; G12V200S-M60; G12V200S-M75; G12V200S-M80; G12V200S-M90; G12V200S-M100; G12V200S-M120; G12V200S-M150; G12V200S-M165;

GE12V200S-M100; GE12V200S-M120; GE12V200S-M150; GE12V200S-M165;

G13V200S-M100; G13V200S-M120; G13V200S-M150; G13V200S-M165; G13V200S-M180;



G12V400S-M3; G12V400S-M5; G12V400S-M7.5; G12V400S-M10; G12V400S-M15; G12V400S-M20; G12V400S-M25; G12V400S-M30; G12V400S-M40; G12V400S-M50; G12V400S-M60; G12V400S-M75; G12V400S-M90;

GE12V400S-M50; GE12V400S-M60; GE12V400S-M75; GE12V400S-M90;

G13V400S-M50;G13V400S-M60;G13V400S-M75;G13V400S-M90;G13V400S-M100;G13V400S-M120;G13V400S-M150;G13V400S-M165;G13V400S-M180;

G14V400S-M100;G14V400S-M120;G14V400S-M150;G14V400S-M165;G14V400S-M180;



G13V750S-M3;G13V750S-M5;G13V750S-M10;G13V750S-M15;G13V750S-M20;G13V750S-M25;G13V750S-M30V40;G13V750S-M50;G13V750S-M60;G13V750S-M75;G13V750S-M90;

G14V750S-M30;G14V750S-M40;G14V750S-M50;G14V750S-M60;G14V750S-M75;G14V750S-M80;G14V750S-M90;G14V750S-M100; G14V750S-M120;G14V750S-M150;G14V750S-M180;

G15V750S-M80;G15V750S-M100;G15V750S-M120;G15V750S-M150;G15V750S-M200;



G14V1500S-M3;G14V1500S-M5;G14V1500S-M10;G14V1500S-M15;G14V1500S-M20;G14V1500S-M25;G14V1500S-M30;G14V1500S-M40;G14V1500S-M50;G14V1500S-M60;

G15V1500S-M50;G15V1500S-M60;G15V1500S-M75;G15V1500S-M80;G15V1500S-M90;G15V1500S-M100;



G14V2200S-M3;G14V2200S-M5;G14V2200S-M10;G14V2200S-M15;G14V2200S-M20;G14V2200S-M25;G14V2200S-M30;G14V2200S-M40;

G15V2200S-M3;G15V2200S-M5;G15V2200S-M10;G15V2200S-M15;G15V2200S-M20;G15V2200S-M25;G15V2200S-M30;G15V2200S-M40;G15V2200S-M50;G15V2200S-M60;G15V2200S-M75;G15V2200S-M80;G15V2200S-M90;G15V2200S-M100;