IC697CBL811

IC697CBL811

IC697CBL811

液力偶合器是通过控制工作腔内工作油液的动量矩变化，来传递电动机能量，电动机通过液力偶合器的输入轴拖动其主动工作轮，对工作油进行加速，被加速的工作油再带动液力偶合器的从动工作涡轮，把能量传递到输出轴和负载。液力偶合器有调速型和限矩型之分，前者用于电气传动的调速，后者用于电机的起动。调速型液力偶合器效率最大值为95%。液力偶合器的效率计算的公式为：

式中：nT—为液力偶合器输出轴的速度（r/min）

nB—为电机侧液力偶合器输入轴的速度(r/min)

其效率为输入轴和输出轴的速度之比，调速越低，效率越低。

2、电磁调速

电磁调速系统由鼠笼异步电机、转差离合器、测速电机和控制装置组成，通过改变转差离合器的激磁电流来实现调速。转差离合器的本身的损耗是由主动部分的风阻、磨擦损耗及从动部分的机械磨擦损所产生的。如果考虑这些损耗与转差离合器的激磁功率相平衡，且忽略不计的话，其效率可用下式计算：

式中：n1――电动机的输出轴转速

n2――转差离合器的输出轴转速

其效率正比于输出转速，输出最大转速时其效率理论值为85%。

四、一甲泵、氨泵和氨水泵的变频调速节能

一甲泵、氨泵和氨水泵名义上是泵，实为压缩机。压缩机为恒转矩负载，选用SB70通用变频器。使用变频调速代替液力偶合器调速的方法是，将液力偶合器拆除，用联轴器连接电动机和负载轴。变频器可用手动调速方式控制，一般情况下一甲泵变频器的输出频率为35Hz～39Hz；氨泵变频器的输出为40Hz～44Hz，能够满足生产工艺要求。

NEW Powervision 113-C Cable TV Standby Power Supply

NEW Fanuc A16B-3200-0412/08A Main CPU Board Slot 1

USED Allen Bradley PLC-5/40V Processor Unit PLC5 40V

USED Allen Bradley PLC-5/V80B Processor Unit PLC5 V80B

USED 4000 Amp Siemens RL4000 Breaker Static Trip 3 LSG

USED Allen Bradley 2711P-T12C4D2 PanelView Plus 1250 A

USED Westinghouse 300 kVA Dry Type Transformer 3 phase
2400 Delta HV 480 Y / 277 LV

Siemens I-T-E RD63F200 Sentron Series Breaker 2000 amps

225 KVA 13800 480 277 480Y GE Dry Transformer 3 Phase

USED Allen Bradley PanelView Plus 1250 2711P-T12C4D1

USED Bosch PSU 5100.100 L Inverter Module MFDC D-64711

NEW Giddings & Lewis NSM2304 M.1015.6949 Servo Motor

USED Perceptron 390-0049 Enna 17" Monitor 0520776002

NEW Xycom VME XVME-977 Hard / Floppy Drive Module

Repaired USED Allen Bradley 2711E-T14C6 PanelView 1400e

USED Repaired Allen Bradley 2711E-T14C6 PanelView 1400e

USED Allen Bradley 1756-L61/B ControlLogix Processor

USED Allen Bradley 2711E-T14C6 PanelView 1400e

Liebert SI025277YANDE Interceptor Surge Suppressor

USED Allen Bradley 1756-L62S/B GuardLogix Processor

NEW ABB 3HNM06855-1 Purge Sensor 3HNM 00272-1

XYCOM XVME-660 VME BUS XVME 660 XVME660 Intel USED

USED ABB 3HNM 01868-1 Hollow Wrist Attachment TR 5002

NEW ABB Baumer 5692435L Feedback Unit PLSR 2XM0 / K10

NEW Xycom VME XVME-977 Hard / Floppy Drive Module

USED AC Tech M14300D MC Series Variable Inverter Drive

NEW Fanuc 0.5/6000 A06B-0115-B804 AC Servo Motor

USED Yaskawa CACR-IR 151515F B Servopack Servo Drive

NEW ABB 3HNM06855-1 Purge Sensor 3HNM 00272-1 .

USED Allen Bradley Complete Servo Motor System
2098-DSD-HV030-SE, MPL-B230P-VJ42AA, 1756-M0S3E
USED Allen Bradley 1336E-BRF50-AA-EN Impact AC Drive

USED Allen Bradley 150-C108NBD SMC-3 Motor Controller

SEALED Allen Bradley 1756-ENBT/A Ethernet Bridge Card

USED Allen Bradley 2098-DSD-HV050X-DN Servo Drive V1.52

150 Amp Square D Molded Case Circuit Breaker KC34150

150 Amp Square D Molded Case Circuit Breaker KC34150

USED SICK CLV490-2010 Optic Barcode Scanner CLV 490

USED Technifor UC200/E Marking Machine Controller UC200

800 Amp Square D Molded Case Circuit Breaker MH 36800

USED Allen Bradley 1785-L80B/E PLC5 Enhanced Controller

NEW Elwood Gettys M433-JCN0-0203 AC Servo Motor

USED Allen Bradley 2098-DSD-HV050X-DN Servo Drive V1.45

USED Allen Bradley 1756-LSP/B GuardLogix Processor F01

USED Allen Bradley 1756-LSP/B GuardLogix Processor

USED Allen Bradley 1756-LSP/B GuardLogix Processor

800 Amp Square D Molded Case Circuit Breaker MAP36800

USED Nordic 100 hp Soft Start Motor Controller 2364S00

Custom Enerpac Turbo w/ Enerpac Cylinder Press

600 Amp Westinghouse Circuit Breaker MA3800F 3 Pole

USED Siemens 4700-BDRMC3-11HN Panel Power Meter

Allen Bradley 2098-DSD-HV030 Ultra3000 Kinetix Drive

NEW Stearns 108705100EBF Self-Adjust Brake Assembly

400 Amp Square D Molded Case Circuit Breaker LHP36400MT

400 Amp Square D Molded Case Circuit Breaker LHP36400MT

REFURB Allen Bradley R2711-TC4X PanelView 1200 Terminal

Enerpac Enerpac Hydraulic Pump PEM 1521 PEM1521

NEW Norgren Herion 40892109000 Pressure Control Valve

USED Stanley AF-SERVO-040-001 Beta Servo Drive Unit

Lot of 37 Kromer Packers Zero Gravity Tool Balancer

SEALED Allen Bradley 1336-PB-SP23D PCB Precharge 460V