IC697ALG445功率因数

IC697ALG445功率因数

分布式供电无法实现
一种可行的解决方案是，尽量缩短低压直流传输导线的长度，将交流/直流电源设置在负载附近。 但这需要改变整个系统的供电方式，由“集中供电”改为“分布供电”，需要安排更多的交流“取电 点”，或者采用长距离的 230Vac 或 400Vac 交流传输线。在很多应用中，考虑到低压要求或系统 设计要求等，无法实行这种方案。


普通的直流/直流转换器方案
另一个可行的解决方案是在长距离低压直流导线末端串入一台直流/直流转换器，作为“电压补偿 器”，以补偿导线上的压降引起的电压波动。并不是所有的直流/直流转换器都适用于此类应用，非常 重要的是，
1) 直流/直流转换器要有较宽的输入电压范围，允许的输入低电压要很低。
2) 直流/直流转换器自身不能有过的输入(起动) 电流需求。


PULS 普尔世的电压补偿器 CD5.241-L1
PULS 普尔世在开发电压补偿器“CD5.241-L1 ”时，认真考虑了这些应用需求，设计了 14-35Vdc的宽输入电压范围，和主动式浪涌电流以及“软”起动功能以避免普通直流/直流转换器起动时的 输入峰值电流。可以下述应用为例来说明它的特性。


Westinghouse Type SL 25MVA Transformer REP-12901 145KV highside 34.5KV lowside
WPBFV4 WESTINGHOUSE CUTLER-HAMMER On/Off/Auto/Reset
WPBFV4 WESTINGHOUSE Adv Cont Module Full Voltage Starters On/Off/Auto/Reset
WL 8094/199 High Voltage Rectifier Tube
WHU364SS Westinghouse Hey Duty Safety Switch 200 Amp 3 Pole 600V
WHU363SS Westinghouse Hey Duty Safety Switch 100 Amp 600V No Fuse
WHITE WESTINGHOUSE RBA-400 FUSE HOLDER, S# 677C371G02
WHITE WESTINGHOUSE 7881C65G03 THRYSTOR ASSEMBLY
WHITE WESTINGHOUSE 2D66621G01 BASE DRIVE BOARD *XLNT*
WH CH Westinghouse Circuit Breaker KDB3400W 400A KDB
WH CH Westinghouse Circuit Breaker KD3400K 400A 600V
WH CH Westinghouse Circuit Breaker KD3400K 400A 600V
WH CH Westinghouse Circuit Breaker KD3400 400A 600V
WESTNGHOUSE CIRCUIT BREAKER 800 AMP 600V 3 POLE LM3800
Westinhouse Numalogic PC1200-1042 Programmable Controller w/ NLMS-1100B
Westinhouse Numalogic NLRH-708P Programmable Controller w/ Input Output & Source
WESTINGTHOUSE 2343D97G09 VOLTAGE CURRENT LOOP PCB CIRCUIT BOARD B470886
WESTINGHUSE LF-50H-730 700 AMP 5000 VOLT 100 VOLT DC CONTROL
WESTINGHOUSE/VECTROL VPH1019-115-3 SCR GATE MODULE ***XLNT***
WESTINGHOUSE/SQUARE D CARRIAGE FOR 800 AMP DSL DS BREAKERS
Westinghouse/numa-logic NLM 700B-04 RAM 235P472H02P MEMORY PCB 30 DAY WARRANTY
WESTINGHOUSE/INGERSOLL RAND, MOTOR CONTROL, SIZE 5, 2045A40G05
Westinghouse/Cutler-Hammer/Eaton A980M1CAC Reversing Motor Contactor 3-phase 
Westinghouse/Cutler Hammer PRL4LD Breaker Mounting Hardware Kit 600 Amp
Westinghouse/Cutler hammer F10 Unitrol Slider Mechanism , (C1)
Westinghouse/Cutler Hammer DS206 Air Circuit Breaker
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER 600AMP TRIP MDSC3800F
Westinghouse/Cutler Hammer A201K5CXZ1 300A 600V 3-Phase Size 5 Contactor
Westinghouse/C-H TAP 365 400A 600V 3W Fusible Switch Busplug 2567D89G01 TAP365
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WESTINGHOUSE, NCG31000 U, , 600V, WESTINGHOUSE NCG31000 U 1000A 600V  
WESTINGHOUSE, NCDC312F1 U, , 600V
WESTINGHOUSE, NC31200WK U, , 600V
WESTINGHOUSE, NB3T400 U, , 600V, WESTINGHOUSE NB3T400 U 400A 600V  
WESTINGHOUSE, NB3500PF U, , 600V, WESTINGHOUSE NB3500PF U 500A 600V  
WESTINGHOUSE, NB31200WK U, , 600V
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WESTINGHOUSE, MCP0358CR N, , 600V, WESTINGHOUSE MCP0358CR N 7A 600V  
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WESTINGHOUSE, MC3800NW, , 600V, WESTINGHOUSE MC3800NW 800A 600V  
WESTINGHOUSE, MC3800FM U, , 600V, WESTINGHOUSE MC3800FM U 800A 600V  
WESTINGHOUSE, MAGNETIC STARTER, STYLE 179C921G30, SIZE 4, 135 AMPS
WESTINGHOUSE, MAGNETIC STARTER, 764A890G01, SIZE 4, 135 AMPS
WESTINGHOUSE, MA3800NW U, , 600V, WESTINGHOUSE MA3800NW U 800A 600V  
WESTINGHOUSE, MA3800F U, , 600V, WESTINGHOUSE MA3800F U 800A 600V  
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WESTINGHOUSE, LBB330W U, , 600V, WESTINGHOUSE LBB330W U 300A 600V  
WESTINGHOUSE, LBB2200 U, , 600V, WESTINGHOUSE LBB2200 U 200A 600V 2P 
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WESTINGHOUSE, LB2400 U, , 600V, WESTINGHOUSE LB2400 U 400A 600V