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Typical Applications
This illustrates a typical application for monitoring current to a 3-Phase motor. External current transformers are
attached to each of the three incoming power lines. The secondary leads from each current transformer are
routed through the window openings in the CR4170 True RMS Current Transducer. A standard 5 Amp second-
ary current transformer is recommended to be attached to a transducer rated for 5 Amp input. With the trans-
ducer attached to a PLC, the over/under current and phase loss conditions can be monitored.
OVER/UNDER CURRENT MONITORING
Looping the primary current-carrying wire several times through the window opening may change the scaling
factor. The “actual” measurement range will be the nameplate rating of the transducer divided by the number of
wire passes. For example, the CR4220-30 has a nameplate rating of 0-30 Aac. Three passes of the wire
through the window opening will then provide an effective range of 0-10 Aac (30/3).
LOOP-POWERED AC CURRENT TRANSMITTER
DC current may be monitored by using the voltage transducer attached to a resistive shunt. The illustration
shows a CR5310-.05 transducer with an input range of 0-50 mv attached to a standard 50 mv resistive shunt.
The output is attached to a standard 0-5 Vdc panel meter.
DC CURRENT MONITORING
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transducer03a
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相关PDF资料
CR4340-20
SENSOR CURRENT 20A 120V BI MOD
CR4410-40
TRANSDCR CRRNT RMS AC 0-40AAC IN
CR5210-10
SENSOR CURRENT 10A 24V UNI MOD
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TRANSDUCER DC 0-200 ADC INPUT
CR5320-100
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CR5410-300
TRANSDCR AC/DC 0-300 AC/DC INPUT
CR6610-100
TRANSDUCER FREQNCY 5VDC 100HZ
CR9350-ACA-M
SWITCH CURRENT AC NO .61 DIA.
相关代理商/技术参数
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制造商:Sumida Corporation 功能描述: