7DO720.7太网接口模块

7DO720.7太网接口模块
按输入电压等级分类
变频器按输入电压等级可分低压变频器和高压变频器，低压变频器国内常见的有单相220 V变频器、三相220 V变频器、i相380 V变频器。高压变频器常见有6 kV、10 kV变压器，控制方式一般是按高低一高变频器或高一高变频器方式进行变换的。 
2．按变换频率的方法分类
变频器按频率变换的方法分为交-交型变频器和交-直交型变频器。交-交型变频器可将工频交流电直接转换成频率、电压均可以控制的交流，故称直接式变频器。交直-交型变频器则是先把工频交流电通过整流装置转变成直流电，然后再把直流电变换成频率、电压均可以调节的交流电，故又称为间接型变频器。 
3．按直流电源的性质分类
在交-直-交型变频器中，按主电路电源变换成直流电源的过程中，直流电源的性质分为电压型变频器和电流型变频器

WESTINGHOUSE DS-420 2000 AMP 600V LSG AMPTECTOR I-A AIR POWER CIRCUIT BREAKER
WESTINGHOUSE DS-416H EO DO L/S/I TRIP
WESTINGHOUSE DS416-1200A-LSIG  DS4161200ALSIG
Westinghouse DS416 power air circuit breaker
Westinghouse DS416 LSIG Power Circuit Breaker 800A Sensor 600V
Westinghouse DS416 LSIG Power Circuit Breaker 1600A Sensor 600V
Westinghouse DS416 LSIG Power Circuit Breaker 1200/1600/2000A Sensor 600V
WESTINGHOUSE DS-416 CIRCUIT BREAKER MODO AMPTECTOR II-A MODEL SE
WESTINGHOUSE DS-416 CIRCUIT BREAKER 1600 AMP ()
WESTINGHOUSE DS-416 800 AMP TRIP LSIG AC AIR POWER CIRCUIT BREAKER
WESTINGHOUSE DS-416 800 AMP TRIP LSIG AC AIR POWER BREAKER DIGITRIP *AUX BAR
WESTINGHOUSE DS-416 600V 1600A Amptector I-A L/S/I AIR CIRCUIT BREAKER
Westinghouse DS-416 600 Amp Low Voltage AC Power Circuit Air Breaker
WESTINGHOUSE DS-416 400 AMP TRIP LSIG AC AIR POWER CIRCUIT BREAKER
Westinghouse DS-416 1600A Frame/Sensor Breaker Amptector Model LSI Square D
Westinghouse DS-416 1600A Frame/Sensor Breaker Amptector II-A Model TR LSI 1600
Westinghouse DS-416 1600A Frame/Sensor Breaker Amptector II Model TR SquareD LSI
Westinghouse DS-416 1600A Frame/Sensor Breaker Amptector I-A Model LSG Square D
WESTINGHOUSE DS-416 1600A AMP 600V-AC AIR LOW VOLTAGE CIRCUIT BREAKER D492626
WESTINGHOUSE DS-416 1600A 600V-AC LOW VOLTAGE CIRCUIT BREAKER B439638
WESTINGHOUSE DS-416 1600 AMP TRIP LSIG AC AIR POWER CIRCUIT BREAKER
WESTINGHOUSE DS-416 1200 AMP TRIP LSIG AC AIR POWER CIRCUIT BREAKER DIGITRIP
WESTINGHOUSE DS-416 1200 AMP TRIP LSIG AC AIR POWER CIRCUIT BREAKER
WESTINGHOUSE DS-416 1200 AMP TRIP LSIG AC AIR POWER BREAKER DIGITRIP *AUX BAR
Westinghouse DS-416 1200 Amp Low Voltage AC Power Circuit Air Breaker
Westinghouse DS-416 1200 Amp Low Voltage AC Power Circuit Air Breaker
WESTINGHOUSE DS4000 ds 4000 4000 A AMP BREAKER 6000A FUSE TRUCK 600 V VOLT
Westinghouse DS-3 T48M11S50C Transformer 50 KVA Black Label
WESTINGHOUSE DS-3 T20L11S50E 50KVA 1PH 240/480V-AC 120/240V TRANSFORMER D497680
WESTINGHOUSE DS-3 F48P11S75H5 75 KVA 480 PRIM 120/240 SEC TYPE ANN 1 PHASE
WESTINGHOUSE DS-206S CIRCUIT BREAKER MODO AMPTECTOR II-A MODEL SE
WESTINGHOUSE DS-206H LOW-VOLTAGE AC POWER CIRCUIT BREAKER 800A 635V 60Hz *XLNT*
WESTINGHOUSE DS-206H CIRCUIT BREAKER MODO DIGITRIP 510 S56LSIG
WESTINGHOUSE DS-206E CIRCUIT BREAKER MODO NO TRIP UNIT