REXROTH DPC1現(xiàn)貨

頻器，另外在此種情況下，變頻器的控制方式只能為v/f控制方式，并且變頻器無法實現(xiàn)電動機的過流、過載保護，此時，需在每臺電動機側(cè)加熔斷器來實現(xiàn)保護。
3、對于一些特殊的應(yīng)用場合，如高環(huán)境溫度、高開關(guān)頻率、高海拔等，此時會引起變頻器的降容，變頻器需放大一擋選擇。
4、使用變頻器控制高速電動機時，由于高速電動機的電抗小，會產(chǎn)生較多的高次諧波。而這些高次諧波會使變頻器的輸出電流值增加。因此，選擇用于高速電動機的變頻器時，應(yīng)比普通電動機的變頻器稍大一些。
5、變頻器用于變極電動機時，應(yīng)充分注意選擇變頻器的容量，使其大額定電流在變頻器的額定輸出電流以下。另外，在運行中進行極數(shù)轉(zhuǎn)換時，應(yīng)先停止電動機工作，否則，會造成電動機空轉(zhuǎn),惡劣時會造成變頻器損壞。
6、驅(qū)動防爆電動機時，變頻器沒有防爆構(gòu)造，應(yīng)將變頻器設(shè)置在危險場所之外。
以上內(nèi)容便是西門子變頻器應(yīng)該怎樣選擇的條件以及選擇西門子變頻器應(yīng)該注意的問題。提醒大家不管選擇哪款電力設(shè)備產(chǎn)品，符合自己要求的才是重要。

Ametek 1X599 0-100 psi 4.5" pressure gauge
WIND GENERATOR TURBINE 400 WATT WITH AMETEK MOTOR
Ametek Vacuum Motor 118148-53 120V 50/60Hz (EC4-2)
AMETEK Alpha 11 Air Sampler Pump Charger # HH0091
Ametek Drexelbrook LCS High Sensitivity Electronics
AMETEK Prestolite SAZ-4201BR Relay Switch Solenoid
AMETEK GAUGE P500 1/4 ANPT CONNECTION SIZE 2
Ametek 24337212-001 Dual Pressure Module 1708 03237212A
Ametek / USG Pressure Gauge 0-30 PSI
New Genuine Ametek Lamb 2 Stage 7.2" Peripheral Bypass Vacuum Motor 115330
AMETEK Panalarm 1423N0L Annunciator Module 1423NOL
AMETEK GAUGE WITH SEAL , 4 1/2" ,160 PSI
AMETEK USG P656 356017LG 0-1000 psi 4" STAINLESS LIQUID-FILLED PRESSURE GAUGE
Ametek Short Shaft Motor, Power Nozzle Hoover Filter Queen - # 5409-31 - NEW
AMETEK 58G3-15BE2 PRESSURE SWITCH 20-100KPA 1/4NPT 115V 17994
New Ametek / pittman GM8222D314-R3 24 VDC GEAR MOTOR
RILEY AMETEK PANALARM 50NC-120A RELAY 120V 60HZ 120 V
Ametek P844UK 2 ?” General Panel Mount Gauge New
AMETEK GAUGE PT 1088 50/260 1/2 ANPT LM
Vacuum Motor CC217L051 Ametek Lamb Oreck NEW
Ametek tachometer
AMETEK DIXSON 101P PROGRAMMABLE BAR GRAPH 0-
AMETEK DIXSON PROGRAMMABLE BAR GRAPH 0-150 DEG F (s7a)
AMETEK DIXSON 101P PROGRAMMABLE BAR GRAPH 0-60 (s7a)
AMETEK DIXSON 101P PROGRAMMABLE BAR GRAPH 0-200 PSIG
AMETEK DIXSON PROGRAMMABLE BAR GRAPH 0-200PSIG B101P
AMETEK DIXSON 101P PROGRAMMABLE BAR GRAPH 0-150 PSIG
AMETEK DIXSON 101P PROGRAMMABLE BAR GRAPH -50 to +100
AMETEK DIXSON 101P PROGRAMMABLE BAR GRAPH 0-1000 SCFM
Boeing Aircraft Flap Position Transmitter P/N 966-0013-003
AMETEK / DREXELBROOK 420-1-409 408-6200 SERIES COTE-SHIELD ENCLOSURE - USED, NIC
AMETEK HUNTER SPRING DIV GROUNDING REEL PN ML1565 NIB
AMETEK FILTER HOUSING PATENT # 4731183
OH Ametek Aircraft Load Meter Indicator P/N 8AW61LLA1
0-600 Dial Pressure Gage Ametek Liquid Filled (New in Box) Model P1559LG
AMETEK AIR VOLUME CONTROL
Ametek Mechanical Force Gauge LKG-2 with case
AMETEK PRESSURE GAUGES VACUUM V500 1/4"LM

REXROTH DPC1

NEW USG SOLFRUNT AMETEK PRESSURE GAUGE 0-30 PSI SB DIAPHRAGM 316L SST
Ametek Pressure Gauge 150894 4-1/2" -30 to 60 psi
AMETEK PRESSURE TRANSMITTER 88C002A2
AMETEK FORCE GAUGE GAGE MODEL T-10P-TC WITH FIXTURE
Lamb-Ametek #116158-01 36V 5.7 2 Stage Vacuum Motor
Ametek Hunter Spring L-5 Pound Force Gauge Gaug
LAMB AMETEK VACUUM MOTOR 116378-07 120 VOLTS 50/60 HZ
Ametek USG Vacuum/Pressur?e Gauge 170878
AMETEK TAK-ETTE 1716 DIGITAL TACHOMETER TACH METER
Ametek/Lamb Electric 115334 2-Stage 7.2in Central Vacuum Motor 110in 12A 115V
AMETEK TRIM SERIES FORCE GAGE 0-50 GRAMS T-50G-TC
AMETEK TRIM SERIES FORCE GAGE 0-4.4 NEWTONS T-4.4N
AMETEK FORCE GAUGE GAGE MODEL T-10P-TC
AMETEK HUNTER SPRING FORCE GAUGE LO-5 80 OUNCES
V36D28L0800 REPLACES AMETEK MOTOR 116883-00 120 VOLTS
Ametek Arc-Loc Movement 0-2300 psi Solid Front Gauge
Ametek 0 - 30psi panel mount gauge 1/4" brass NPT ftg.
Ametek Vacuum Gauge V1929 / 1929
AMETEK ROTRON TUBE AXIAL FAN , PART # 011040000 , 12 VDC , 6000 RPM , NIB
Panalarm AMETEK 91AF1NL24DC4C8?GP Flasher Audible Board NIB
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Ametek 2" P500 Utility Gauge
SV Allied Signal Aircraft Butterfly Valve, P/N 978558-2-1
AMETEK ROTRON 1/2 TRIMLINE X SERIES 1928XF 50AMP
PANALARM Ametek ACS-8 8 PIN RELAY (New)
Ametek U.S. Gauage 600 PSI
Ametek Alpha-3 Air Sampler Portable Sampling Pump
SV Allied Signal Aircraft Butterfly Valve P/N 978558-2-1
AMETEK HUNTER SPRING FORCE GAUGE LO-1M 16 OUNCES
Ametek US Gauge 1980 155008 60 psi size 4 1/2
ametek rotron 1.45amp 20000rpm 28vol fan
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AMETEK USG U.S. GAUGE 30 PSI 4 1/2" GAUGE 1/4 NPT NIB
DIXSON AMETEK DC AMPERS METER BW051P BWVRR2RHY1MDLX?BX02
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REXROTH DPC1

￡3000 ex VAT, new in 2009, Full working order
Returns: Accepted
Acuity Pro All-in-one Computer and Software Bundle 23"
Acuity 002-MV4000 Mentor Vision 4000 Controller Unit ! WOW !
HAAG-STREIT Lotmar Visometer(atta?chment for assessment of retinal visual acuity)
Welch Allyn PROPAQ CS 246 Multiparameter Patient Monitor Wireless Acuity w/Stand
19" Color LCD Acuity Chart System Projector Vision Chart Upgrade New
17 inch LCD Vision Acuity Test Chart Linux Platform Remote Control Wall-mounted
Good Lite illuminated acuity viewer with charts
010-PV9080 ACUITY
19" Wide Screen Color LCD Acuity Chart System Projector Vision Chart Brand New
LITHONIA LIGHTING / ACUITY SWITCHPAK SPAK 8S 120/277 LIGHTING CONTROL NEW
AS-DS40-601 ACUITY DIMENSION MODULE *NEW*
NextAcuity Digital Visual Acuity - Optometry Ophthalmolog?y Optician
Complete System Including Computer, Remote, Mount, CD
Welch Allyn PROPAQ Encore 202 EL Patient Monitor, w/ Wireless Acuity, w/ Stand
NEW RVSI MX-600 KIT Camera ACUITY CIMATRIX IDENTICS
Protocol PROPAQ Encore 202 EL Patient Monitor, w/ Wireless Acuity, w/ Stand
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Manual Halogen Projector System Acuity Cross Slide Mirror Set Screen
ACUITY IMAGING 070-200000 REV:B FRAME GRABBER BOARD
AS-DS41-601 ACUITY DETECTION SENSOR
ACUITY IMAGING CM4000 ANALOG CAMERA AND 1:2.8 50MM LENS
Acuity Visual Sensor AS-DS11-301 New
Electrohome 38-C34ANA-01 Acuity Monitor 110-240V ! WOW !
Visual Acuity Software w/remote Optometry Ophthalmology Optician
NextAcuity Software with Remote and Red/Green Glasses
Acuity SR20 symbology reader
Bausch and Lomb Vision Acuity Projector
Visual Acquiring Testing Projector w/ slide and 3 bulbs
Acuity Golf Club Set for ages 10-15
DIGITAL ACUITY SOFTWARE with Patient Education Module

REXROTH DPC1