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1 Replies and 331 Views CR8350-2000-F step response  331  1 Started by  David Gustavson I am considering using a CR8350-2000-F in a switching power supply. The spec sheet says frequency response to 200KHz. I need to know how the current transformer would respond to a 0 to 100 amp step in current. What would be the delay and rise time of the output signal Ideally a graph similar to what is on opamp datasheets would be great. Thanks, Dave Gustavson
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by  Tony HodgesJump to last post
03/21/2016 1:53 PM
1 Replies and 504 Views CR9580 Questions  504  1 Started by  Matt Mendenhall Question 1: I designed your CR9580-10-M into my system without realizing the product has such a long lead time for delivery, and I am still waiting on my first unit delivery to test and validate almost one month after I ordered it. The non-mounting case version CR9580-10 has a much shorter lead time. Does this part have just a smooth bottom, DIN rail, or How do people mount these Question 2: I plan to use the CR9580 with the output connected via an addressable switch that is connecte...
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by  Tony HodgesJump to last post
08/17/2015 5:11 PM
0 Replies and 499 Views Sensors for TDD,THD,PF  499  0 Started by  sufyaan AbdulHaseeb Hello, I would like to seek assistance in selecting appropriate sensors for a facility monitoring project. The requirements call for monitoring of AC and DC Voltage and Current of various equipment at 99.5 accuracy. I understand that Instantaneous voltage and current sensors would be required. If someone can guide me to the right product page, i can select one that meets site requirements. Thanks.
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02/26/2015 12:23 PM
0 Replies and 505 Views CR5220-300  505  0 Started by  Gabriel Isrrael Please, for part number CR5220S-300-12V we need the complete relation graph between input current and output current for input current range from -400A to 400A. Thank you!
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02/20/2015 7:15 PM
0 Replies and 509 Views CR4395 For Open Heater Application  509  0 Started by  Jim McKelvey I am interested in using the CR4395 for determining failure of a heating element in a railroad signaling environment. I have read through the relevant application document and still have a question about the operation of the output function (I am currently basing my design on use of a relay output). In my design, a PLC (installed in an instrument house in the field) receives a call for heat from a central office and in response energizes an output which turns on a heater control case (located...
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02/16/2015 5:28 PM
1 Replies and 573 Views part information  573  1 Started by  Shane O'Neill Hi,I am from Ireland and need a bit of information, We work on 230v ac system,I am looking for a current relay that will switch 230v ac 1 to 2 amps when 10amps or more passes throught the relay, or some thing similar.Could you please recommend 1 of your products that will handle this setup.As i will hopefully be ordering plent, regards shane
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by  Tony HodgesJump to last post
01/20/2015 2:30 PM
2 Replies and 561 Views Need Sump Pump Alarm  561  2 Started by  Eric Corder Hello, I need an audio (preferred)/ visual current indicator from a sump pump in the basement. i would like to monitor it from upstairs. Help
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by  Eric CorderJump to last post
01/08/2015 9:48 AM
1 Replies and 571 Views CR9580 - Signal Out (Volts)  571  1 Started by  Will Charlton On the datasheet for the CR9580-&91;10,20,50&93; Current Sensor, there are two values for the Voltage on the Signal Out. - Signal Out: 0 -5 VDC - Max. Signal Out: 12VDC Is the maximum 5 or 12 V I understand that we're talking about RMS values, but I'd like to understand under which conditions would I see a 12VDC value on the output of this device. Datasheet: http://www.crmagnetics.com/Products/Assets/ProductPDFs/CR950020Series.pdf
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by  Tony HodgesJump to last post
01/06/2015 10:53 AM
1 Replies and 751 Views CR9321-NPN current switch issue  751  1 Started by  Jonathan Barry Hi, I have a monitoring system on my home that uses the CR9321-NPN current switch to let me know how much energy I am using in a number of areas. In this case my hot water tank is reading as if the current is constantly on (when I know it isn't). Please see the website here for my home system and the hot water tank reading at 3.5kW constant. http://welserver.com/WEL0304/ In this system I am using a monitoring device called a WEL (Web Energy Logger). It is a great little device and ...
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by  Tony HodgesJump to last post
10/22/2014 3:29 PM
3 Replies and 3629 Views CR5210-2 overcurrent questions  3629  3 Started by  first last Greetings, I have two small servo motors that I’m attempting to monitor current draw at the operators station with inexpensive panel meters. The average current draw is around 400mA with peaks in the 1.25A region, but in an overload/binding situation, the motor/drive briefly spike to approx 8A before faulting out, destroying the ammeter(s). Will the CR5210-2 tolerate overcurrent conditions with no ill effects to the transducer, and/or whatever is connected to the transducers output ...
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by  Tony HodgesJump to last post
08/08/2014 9:23 AM
1 Replies and 763 Views CR3110 with 5ADC to 75ADC  763  1 Started by  Bret Beringer I need to be able to detect the presence (not level) of DC current over a range of 5A to 75A with surges of up to 300A. I am having trouble finding a burden resistor that will allow enough voltage to detect the low range and stay under the Vmax rating of the part. The max is an RMS value, so how does this play in for DC Any other suggestions are welcome.
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by  Tony HodgesJump to last post
07/22/2014 2:53 PM
3 Replies and 835 Views CR5210-100 Bidirectional IO  835  3 Started by  Kyle Fodchuk I'm spec'ing the CR5210-100 to monitor battery bank charging and discharging. Does the 10V output indicate 100A and -10V output indicate -100A
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by  Tony HodgesJump to last post
07/17/2014 12:03 PM
3 Replies and 764 Views CR6620-60-500  764  3 Started by  Ryan Blackmon This transducer is being used in an application to monitor a typically 60 Hz frequency. Where can I find instructions to properly calibrate this transducer Have you heard of this transducer having an issue with drifting
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by  Tony HodgesJump to last post
07/17/2014 12:01 PM
0 Replies and 726 Views CR8320-1600  726  0 Started by  Horacio Estabridis Hello, I just like to know the parameters tolerances for this part Thanks
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07/09/2014 10:14 AM
0 Replies and 745 Views Maximum Input Current  745  0 Started by  Kristin Chew Hi, May i know what is the maximum input current for CR4850-500 Will it get burnt if i connect my aircond of 4A as a load for example Thanks Regards, Kristin
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07/07/2014 9:07 AM
0 Replies and 735 Views cr8350-2000  735  0 Started by  David Porat what are the accuracy and percent errors of CR8350-2000
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06/17/2014 12:21 PM
1 Replies and 813 Views Input Impedance of two voltage sensors  813  1 Started by  Michael Clarke Hello CR Magnetics. We're looking for the input impedance values for the CR4580-250 AC voltage and CR5320-600 DC voltage sensors. The purpose is to determine how much voltage loss we expect in certain lengths of input sensor wire. Thanks very much, Michael, Kingston Ontario, Can.
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by  Tony HodgesJump to last post
06/04/2014 8:49 AM
1 Replies and 840 Views cr4395  840  1 Started by  Bill Napier I would like to use multiple external current transformers all looping through the 4395. My question is this: if the relay is rated 1-10 amps, and multiple motors are running through multiple external current transformers add to more than 10 amps, how will this effect the 4395 Thanks.
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by  Tony HodgesJump to last post
05/22/2014 2:10 PM
3 Replies and 963 Views CR4395 - Wound rotor motor plugging relay  963  3 Started by  Sylvain Raymond We would like to use a CR4395 to limit plugging torque on a wound rotor motor. During plugging (commanding the opposing rotating direction) the output relay would drop on overcurent, preventing the secondary accelerating resistors from being shorted (and limiting the counter torque at the motor). The frequency at the rotor varies from very low frequency at nominal speed to 120Hz at start of plugging. Plugging inhibit is removed as the motor passes through zero speed and the rotor current freq...
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by  Tony HodgesJump to last post
05/12/2014 9:20 AM
1 Replies and 1418 Views Nuisance trip with CR4395  1418  1 Started by  jyothish rk Hi, We are facing problem using CR4395.The problem is with the tripping time. The part no of the current sensing relay that we are using is CR4395-LH-120-110-B-CD-ELR-I. The tripping time that we set is usually around 3 or 4 seconds, but due to motor inrush current the relay trips immediately.Our doubt now is, whether the tripping time dial, provided in the model is for setting the inhibit time or the delay for the relay to actuate in case of fault or is common for both. Or is it that, we ar...
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by  Tony HodgesJump to last post
10/29/2013 10:39 AM
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