6FC5112-0DA01-0AA1
6FC5112-0DA01-0AA1
6FC5112-0DA01-0AA1大部分客戶在應(yīng)用模塊電源時(shí),習(xí)慣降額到10%~30%負(fù)載下應(yīng)用,他們認(rèn)為這樣降額應(yīng)用可以提高產(chǎn)品長(zhǎng)期工作的可靠性。其實(shí)不然,在電源模塊的實(shí)際應(yīng)用中,由于輕負(fù)載效率較低,若長(zhǎng)期工作在輕負(fù)載條件下,將導(dǎo)致自身?yè)p耗大,引起模塊外殼溫度升高,在多模塊使用的場(chǎng)合或密閉場(chǎng)合中將導(dǎo)致模塊失效,無法完全滿足高可靠性的應(yīng)用要求。
舉一個(gè)實(shí)際應(yīng)用的案例,某軍工客戶負(fù)載約1W,在使用模塊時(shí)認(rèn)為降額應(yīng)用可提高產(chǎn)品可靠性,所以選用國(guó)內(nèi)某品牌6W電源模塊。在標(biāo)稱電壓輸入,輸出滿負(fù)載,25℃環(huán)境溫度下測(cè)試, 測(cè)試該模塊的外殼溫度44度,高溫85度條件下測(cè)試外殼溫度達(dá)到103度。但是,若該模塊持續(xù)工作在高溫環(huán)境下,其可靠性將會(huì)降低。
這是因?yàn)樵?W負(fù)載下,模塊的轉(zhuǎn)換效率只有40%左右,從公式ΔP=Po/η-Po=1.5W中可以看出,模塊自身的損耗比負(fù)載功率還大,導(dǎo)致外殼溫度升高,反而降低了產(chǎn)品的可靠性。金升陽(yáng)R3代6W產(chǎn)品在輕負(fù)載下效率高達(dá)75%,較國(guó)內(nèi)同行提高了35%。由ΔP=Po/η-Po=0.3W可知,模塊自身?yè)p耗降到原來的五分之一。相比較而言常溫、高溫下工作我司模塊的外殼溫度降低了10度左右,由此,減少了由模塊自身?yè)p耗而引起的可靠性降低的風(fēng)險(xiǎn)。
Chemraz V-15 O-ring, Greene Tweed, GT M040001450SC513, CPD 513, 401177
CROUZET TR ELECTRICAL TIMER, RELAY, SYRELEC
Fastcom Commtech 422, RS-422/RS485 adapter, interface, PCB
AMAT 3060-01227 BRG BALL ANG CONT 25X52X15X mm, SKF 7205 BECBV
AMAT 0020-85115 FACTORY WATER CONNECTOR
TURCK U5260-40 CONNECTION CABLE, RKC 4,4T-2.2-RSC 4.4T CA, EXT 4 COND 401452
AMAT 492-17298-00 Valve, SOl, Base MT (DC)
AMAT 0020-82303 Pin,
AMAT 0020-92411 Bolt Pivot
AMAT 0040-93402 assy. rail rack L.H.
HA121 Phototransistor Optical Interrupter Switch, With Connectors
31 Gasket Front Plenum 7310-9308-01
Omron E32-TC200B, Photoelectric Switch Fiber Unit, 402256
TOSHIBA KEYPAD CBVX-7B3
NEW MODULE 1 PIECE MG50J1BS11 TOSHIBA MODULE ORIGINAL
NEW MODULE 1 PIECE MG50J1BS11 TOSHIBA MODULE ORIGINAL
TOSHIBA 72197 NSPP 72197
Toshiba EX10*MIN51 Input Module
TOSHIBA P000297920 NSFP P000297920
TOSHIBA T20FL2C41A FNFP T20FL2C41A
TOSHIBA AR166U-C-230-240V USPP AR166UC230240V
TOSHIBA T2SD811 FNFP T2SD811
TOSHIBA PA3250U-1BRS NSPP PA3250U1BRS
TOSHIBA EX2040-EXPC5 NSPP EX2040EXPC5
NEW!! Lot of 2 PCs Toshiba ER17500V?3.6V ER17500V/3.6V Battery
TOSHIBA PA2400U USPP PA2400U
TOSHIBA R-10-2H USPP R102H
TOSHIBA E-10F USPP E10F
TOSHIBA PA2484U NSPP PA2484U
NEW MODULE 1 PIECE MP6757 TOSHIBA MODULE ORIGINAL
TOSHIBA 4401795210 USPP 4401795210
TOSHIBA TS-H492B/IBAH USPP TSH492BIBAH
TOSHIBA PU-CABLE-1M NSPP PUCABLE1M
TOSHIBA A4-40E USPP A440E
TOSHIBA IC68301AFR16 FNFP IC68301AFR16
TOSHIBA IC62781AP FNFP IC62781AP
TOSHIBA IC5036AP FNFP IC5036AP
TOSHIBA IC9122P FNFP IC9122P
TOSHIBA E100C USPP E100C
TOSHIBA TKRS232 NSPP TKRS232
TOSHIBA ASD-CAB15F NSPP ASDCAB15F
Toshiba MG50G1BL3 Power Module Pull OTIS OVF30 ACA21290BJ2 Otis Elevaotr Co
TOSHIBA CAB001308-00 USPP CAB00130800