描述
電機(jī)過載的保護(hù),熱繼電器熱元件;
號(hào)流容量?jī)杀栋耄瑑杀肚邤?shù)整定。
說(shuō)明:
(1)容易過負(fù)荷的電動(dòng)機(jī),由于起動(dòng)或自起動(dòng)條件嚴(yán)重而可能起動(dòng)失敗,或需要限制起動(dòng)時(shí)間的,應(yīng)裝設(shè)過載保護(hù)。長(zhǎng)時(shí)間運(yùn)行無(wú)人監(jiān)視的電動(dòng)機(jī)或3kW及以上的電動(dòng)機(jī),也宜裝設(shè)過載保護(hù)。過載保護(hù)裝置一般采用熱繼電器或斷路器的延時(shí)過電流脫扣器。目前我國(guó)生產(chǎn)的熱繼電器適用于輕載起動(dòng),長(zhǎng)時(shí)期工作或間斷長(zhǎng)期工作的電動(dòng)機(jī)過載保護(hù)。
(2)熱繼電器過載保護(hù)裝置,結(jié)構(gòu)原理均很簡(jiǎn)單,可選調(diào)熱元件卻很微妙,若等級(jí)選大了就得調(diào)至低限,常造成電動(dòng)機(jī)偷停,影響生產(chǎn),增加了維修工作。若等級(jí)選小了,只能向高限調(diào),往往電動(dòng)機(jī)過載時(shí)不動(dòng)作,甚至燒毀電機(jī)。(3)正確算選380V三相電動(dòng)機(jī)的過載保護(hù)熱繼電器,尚需弄清同一系列型號(hào)的熱繼電器可裝用不同額定電流的熱元件。熱元件整定電流按“兩倍千瓦數(shù)整定”;熱元件額定電流按“號(hào)流容量?jī)杀栋搿彼氵x;熱繼電器的型號(hào)規(guī)格,即其額定電流值應(yīng)大于等于熱元件額定電流值。
九、測(cè)知無(wú)銘牌380V單相焊接變壓器的空載電流,求算基額定容量
產(chǎn)品廣泛應(yīng)用于:電力、石油、礦井提升、港口、供熱、燃?xì)?、供水、污水處理、冶金、造紙、紡織、化工、水利等現(xiàn)代化工業(yè)領(lǐng)域!
我們這里有您急需的停產(chǎn)備件,
優(yōu)勢(shì)現(xiàn)貨,詢不到的,買不到的,請(qǐng)聯(lián)系我們!
絕 對(duì)優(yōu)勢(shì),絕 對(duì)低價(jià)!絕 對(duì)正品,優(yōu)質(zhì)的產(chǎn)品,一流的服務(wù),充足的庫(kù)存,
歡迎來(lái)電詢價(jià),我們將會(huì)給您最優(yōu)惠的價(jià)格!
主營(yíng):世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國(guó)AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國(guó)西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(福克斯波羅):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場(chǎng)輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
ABB 3HAB2207-1 PC BOARD 3HAB22071 NEW
Mens Arctica Black Diamond Watch ASQB-D1-B2ABb 6.75ct
ABB ACS600 Drive Part#ACS60402605/ACS?60402604 Used
ABB DRY-TYPE NEMA 1 500 KVA 3 PH TRANSFORMER ABB511111
ABB Robotics 1 FT3074-5AZ21-9-?Z Servo Motor
ABB Kent-Taylor Magmaster MF 200mm Magnetic Flowmeter
ABB DPS AC DRIVE SA3100-R077-AN-?L6 75HP
ABB ACS 600 NEW OLD STOCK 52/41 AMPS ACS600
Ram Ind.Motor Soft Starter Used for 1 month ABB Start
ABB Total Flow NGC8206+Total Sonic TS9046 D-1
ABB ROBOTICS MODEL IRB 6400 ROBOT USED IRB 6400
NEW ABB 6228BZ10000D MULTIBUS SC D/F
ABB ROBOT WRIST FOUNDRY MODEL 3HAC3941–1
ABB 3BSX107435R1 3BSE040255R2
3HAC3579-1-04 ABB ROBOTICS ROBOT SERVO MOTOR
1FT3078-5AZ21-9?-Z SIEMENS ABB ROBOTICS AC SERVO MOTOR
ABB Robot Controller C5.3 Paint Robot Parts Robot 1994
ABB 58031844 Mem86-3*192K AB Stromberg
ALLEN BRADLEY MOTOR 1326AB-B2E-21 NEW 1326ABB2E21
Mens Diamond Round Cut Arctica Watch AR-D4-B2ABb 6.75ct
ABB 58171760 Mem86-3/10 Mem86-3*192K AB Stromberg
ABB 57088443 MEM 86-192K+192K RAM Memory DCG 3200-MR2
ABB K-line K800S power air circuit breaker
ABB CIRCUIT BREAKER S5H 400 AMP 3P#S5H400EWS4 803NW
ABB Megamax SACE F1S F1 F1S1250 1250 Amp 690V Breaker
ABB Inverter ACS800-01-0040-?3+P901(ACS8000100403)NIB
ABB TEACH PENDANT 3HNE00442-1/04
ALLEN BRADLEY 1326AB-B720E-S2?K7L NSFP 1326ABB720ES2K7?L
ABB 3HAB2220-1 Memory Module Expansion Pack Of 2
NEW ABB IRB 6400 ROBOT AXIS 1 MOTOR 3HAB 6738-1
ABB ROBOT WRIST 3HAB6864-1 MOTOR 1FK6083-6AZ21 NEW
ABB SNAT7780CNT MOTOR CONTROL BOARD
ABB PCB BOARD DSQC 328A 3HAC 17970-1
ABB TEACH PENDENT 3HNE 00314-1
RANSBURG ABB LECU5004-11 MICROPAK POWER SUPPLY UNIT NEW
ABB Advant keyboard IH522EN 3BSE018792R1 PU518 PU519
ABB ASEA 5752 0001-BZ 57520001-BZ DSCS-116 DSCS116 NEW
ABB 3HAB 5956-1 MEMORY EXPANSION 8 MB
ABB Type K800 S K800S 800 Amp 800A Air Breaker LI
3HNE-00313-1 ABB
1FT3101-5AZ21-9?-Z ABB ROBOTICS
ALLEN BRADLEY 1326AB-B740C-21?-K7 USPP 1326ABB740C21K7
3HAB6182-1 ABB
ABB ACS601-0050-4-0?00B1200801 AC DRIVE INVERTER
3HNE-00312-1 ABB
ALLEN BRADLEY 1326AB-B720E-S2?K7L NSPP 1326ABB720ES2K7?L
ABB ACS501-030-4-00?P2 AC DRIVE 40 H.P.ACS501030400P2
ABB Bailey IMCOM03 PS00UH Enhanced Controller
ABB ROBOTIC DRIVE 3HAB8101-8/08C
ABB ROBOTIC DRIVE 3HAB8101-8/08D
3HNE-00312-1/01 ABB
3HEA505956/00 ABB
ABB 52614759 CPU86-NDP Allen Bradley Stromberg
ABB DSQC-266G 3HAB8801-1/2B SERVO AMPLIFIER NEW
Carrier 24ABB3 13 SEER 5.0T w/20kw
ABB 57288531 MEM 86-192K Memory
ABB Operator panel PP865 PP 865,Fast shipping
ABB 57275847 USART86-INT Allen Bradley Stromberg 200042
3HAB4039-1/6 ABB ROBOTICS
ALLEN BRADLEY 1326AB-B730E-M2?L NSFP 1326ABB730EM2L
NEW ABB IRB ROBOT AXIS 4 MOTOR 3HAB6620-1
ABB Flowmeter SE41F 10″FSM4000 series
ABB 3HAB5948-1/09 Lower Cable 3HAB5948109 NEW
ABB 3HAB2241-1 CPU BOARD DSQC-325 Set Of 2 3HAB22411
ABB DMG225L 102 HP 76 KW DC MOTOR,NEW
ABB Robot Wrist 3HAB4196-1 PS-130/6-120-P-?PMB-4157 New!
ABB Automation AC Gantry Motor M3BP 1500r/min 4 pole
ABB Robot Wrist 3HAB4325-1 Refurbished by ABB
ABB STROMBERG POWERSUPPLY BOARD SAFT110POW SAFT 110 POW
ABB FLOW METER 10DX3111ADE09P1?A2EAA1132
ABB 3HAB8101-2/07A Drive NEW 3HAB81012 3HAB8101
ABB DCS 400 TOP CARD 3ADT310300R1 SDCS-CON-3 REV:E
ABB IRO 2000 Robot ABBIRO Panel View 1200
ABB Noratel Transformer Unit T2 3HAC6160-1 12970