5X00070G04

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                   厦门泰尼电气有限公司

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变频器控制黄河破厂1号制冷机的例子。在该例中，变频器选用艾默生型号为TD2000-4T2000G的00KW变频器，制冷机为大连冷冻机厂生产，电机功率为190KW。PID调节是由变频器自带的内置PID调节器完成的。在根据负载变化控制制冷机转速的方法中，我们的目的是想控制制冷机吸入口的温度，由于现场温度的采样比较困难，而吸入口的温度与压力又有着一定的对应关系，且在现场管道上安装压力变送器更容些，因而在本系统中，我们采用压力传感器检测压缩机的吸入压，只要变频器控制该压力维持恒定不变，则吸入口的温度也维持恒定不变。同时考虑到制冷机工作时的安全要求，我们将该制冷机原有的温度保护、油压保护等通过中继接入变频器，保证有温度保护或油压保护动作时，变频器能立即自动停机，防止机械设备的损坏。另外该制冷机原为两地控制，采用变频后我们仍保持原有的两地控制，这样，对操作人员来说，更易于操作。WESTINGHOUSE W200M2CFC non-reversing contactor size 2

WESTINGHOUSE A200M3CAC SIZE 3 MOTOR ConTROL STARTER,USE

西屋

WESTINGHOUSE B201K1CA B/200 ConTROL SIZE 1 CONTACTOR

WESTINGHOUSE AA43P THERMAL OVERLOAD RELAY SIZE 4 NEW

WESTINGHOUSE ADVANTAGE SIZE 2 STARTER MCC BUCKET 70 AMP

WESTINGHOUSE ADVANTAGE SIZE 2 STARTER MCC BUCKET HMCP50

WESTINGHOUSE ADVANTAGE SIZE 2 STARTER MCC BUCKET 45 AMP

WESTINGHOUSE ADVANTAGE SIZE 1 STARTER MCC BUCKET 15 AMP

WESTINGHOUSE ADVANTAGE SIZE 1 STARTER MCC BUCKET 7 AMP

WESTINGHOUSE ADVANTAGE SIZE 1 STARTER MCC BUCKET HMCP03

WESTINGHOUSE ADVANTAGE SIZE 1 STARTER MCC BUCKET 30 AMP

WESTINGHOUSE SIZE 5 ConTACT KIT 477B477G05 STARTER

WESTINGHOUSE ADVANTAGE SIZE 1 STARTER MCC BUCKET 20 AMP

WESTINGHOUSE ADVANTAGE SIZE 2 STARTER MCC BUCKET 60 AMP

WESTINGHOUSE A200M3CX SIZE 3 STARTER STYLE 179C920G18

WESTINGHOUSE SIZE 3 STARTER MCC BUCKET 100 AMP HMCP100

Westinghouse Starter A200MACAC 765A837G01 Size 00

WESTINGHOUSE SIZE 3 STARTER MCC BUCKET 100 AMP HMCP100

Westinghouse A201KIAA AC Magnetic Contactor Size 1 NIB

Westinghouse S/S Safety Switch Enclosure Size 1 3-Phase

Westinghouse Safety Switch Enclosure Size 0 3-Phase

NEW Westinghouse BA13A Size 1 Thermal Overload Relay

Westinghouse GCA-530 Size 5 AC Control Contactor 3 Pole

Westinghouse B/200 Sz 00 1-Pole NO Contact Kit NIB B200

Westinghouse L-54 L54 Electrical Interconnect Sz 1 NIB

Westinghouse Size 3 Life Line Contactor Motor Starter

WESTINGHOUSE MOTOR STARTER SIZE 5

WESTINGHOUSE 52E7295 SIZE O ConTACTOR 48VDC COIL NNB

WESTINGHOUSE Contact Kit 373B331G18 SZ 00 3/4 Pole NEW

WESTINGHOUSE A200M2CAC SIZE 2 STARTER, USED

Westinghouse A210M0CAC Size 0 3 Phase Contactor

2 WESTINGHOUSE ConTACTOR STARTER SIZE 1 10 HP A201K1CA

Westinghouse A201H5CAZ1 Size 5 Contactor 3PH 300A 600V

Westinghouse A201K6CAZ1 Size 6 Contactor 3PH 600A 600V

Westinghouse 626B187G17 SIZE4 ConTACT KIT 3 POLE

Westinghouse Non-Reversing Starter Size 00 B200MACAC

Westinghouse Size 5 Wye-Delta Starter – Reman

Westinghouse Family Size Griddle NIB White

WESTINGHOUSE B-100 MANUAL MOTOR STARTER SIZE M-O

Westinghouse Size 3 Contactor 90 amp A201K3CA

Westinghouse A201K4CA Size 4 Starter

WESTINGHOUSE MODEL K A200M4CAC SIZE 4 MOTOR CONTROL

WESTINGHOUSE SIZE 5 ConTACT KIT 477B477G05 STARTER

1 NEW WESTINGHOUSE A200M1CACD SIZE 1 STARTER NIB

Westinghouse Size 2 Starter A200M 2CACM 120 Volt Coil

Westinghouse Size 2 Starter A200 with Interlock 33-3A

Westinghouse Size 2 A201 K2EA Starter 120 Volt Coil

Westinghouse A201K2CA Size 2 Contactor 3 PH 45A 25HP

Westinghouse Size 3 Starter A200M 3CX 480 Volt Coil

Westinghouse Size 00 Motor Starter, Cat# A200MACAC