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1 Replies and 2269 Views
CR6240-500-50 question 2269 1
Started by Tim Yau
Hi, I'm trying to add a CR6240-500-50 inside an Allen Bradley MCC bucket. Due to space constraint, the transducer is mounted after the overload relay. Should I feed pin 1, 2, and 3 of the transducer with 3-phase 480VAC after the overload relay (see Option1) or after the circuit breaker (see Option2) My concern is if the starter is off, would the transducer still be generating the 4mA output I'm not sure if the transducer needs the 480VAC to generate its 4-20mA output or if it's sole...
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2269 |
by Tony Hodges 08/06/2013 3:42 PM |
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1 Replies and 2170 Views
CR9580 output conversion 2170 1
Started by Eric Buchanan
I can not find the factors to convert the output voltage into the measured current. Is it simply linear from 0 VDC = 0 AAC to 5 VDC = rated AAC Thanks.
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2170 |
by Tony Hodges07/23/2013 8:42 AM |
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1 Replies and 2384 Views
Difference between CR8348-2000 and CR8349-1000 2384 1
Started by Sunil Sawant
I want to measure 30 Amp inrush (surge) current for 3 secs. I have shortlisted CR8349-1000 and CR8348-2000 for the purpose. Both CTs are rated at 50 Amp. As per datasheet (CR8300 Series.pdf); Vmax rms, Te (typ) and DC Resistance of both CTs is different for same rated current. 1. What is the difference between both CTs from application point of view 2. Which CT is suitable for above mentioned application 3. Are both CTs interchangable in above mentioned ...
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2384 |
by Tony Hodges06/13/2013 8:33 AM |
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2 Replies and 2447 Views
Monitor AC motor Currents on Conveyor 2447 2
Started by Larry Laster
I would like to know the best product available. What we are trying to do is monitor current on a conveyor that has a history of breakage. The idea is to monitor the current of the AC motor into the PLC analog card(0-10)vdc and then stop the conveyor before major damage. The motor is 460 3 phase 15 horsepower 17.22 amps. When starting the conveyor the current rises to 80 amps and once the conveyor is moving the current draw is around 6 amps. We are looking at your model CR4211. Does this require...
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2447 |
by Larry Laster06/07/2013 8:44 AM |
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4 Replies and 2182 Views
CR4395 with CRGFS-100 Application Question 2182 4
Started by Tim Mik
Is there a limit to wire length from a CR4395 Module to the CRGFS-100 Also should shielded cable be used for interconnection Thanks, Tim
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2182 |
by Tim Mik06/06/2013 8:52 AM |
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1 Replies and 2365 Views
3 phase 3 wire CT instal 2365 1
Started by Art Goodman
I'm using the CR8350-2500-N current transformer to measeure 3 phase 3 wire system. I need to know the correct install for your CT. When H1 faces the source on L1 and L3, I get a Negative Active Power reading. When L1(H1) faces the source and L3(H1) faces the load my Active Power is Positive. Which way is the correct install.
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2365 |
by Tony Hodges05/28/2013 8:27 AM |
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1 Replies and 2535 Views
CT Recommendation 2535 1
Started by Joe Rocci
I have an application that requires current monitoring of a 220VAC load up 100 amps. I'd like to use a split-core CT. The output of the CT would drive a load resistor to develop a voltage that is sampled by an A-D converter in order to make various measurements. I'm looking at the 604-1000T for this. Since this is a 3000 turn unit, can I assume that, with 100 amps in the load, the output current would be 0.033A Can I also assume that, if I load it with 1000 ohms, the output voltage would be 33V...
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2535 |
by Will Lowes05/07/2013 11:21 AM |
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1 Replies and 2382 Views
amy 5395 with High and Low limit? 2382 1
Started by Ron Fial
Is there any version of the 5395 or similar product to sense DC current where the output relay closes betweeen, say, 1A and 3 A, but relay is open below 1A and relay is open above 3A. It would need two adjustments instead of the single on on the 5395. Thanks
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2382 |
by Tony Hodges04/12/2013 7:54 AM |
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1 Replies and 2495 Views
CR5210-5 2495 1
Started by Steve Smith
I have several CR5210-5 CT's I use in my EGSE Racks to monitor the main power supply current which I send to a 0-10V panel meter. I have a 28VDC power supply used to power all the front panel meters, I tapped off of this Supply to the input of a L7824CT Voltage Regulator to power the CR5210-5. I recently had to change a CT because it was outputting 10mV with no current flow, (the main pwr supply was unplugged). I now have another CT that is outputting 6mV with no current flow.I have several q...
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2495 |
by Tony Hodges03/01/2013 11:19 AM |
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1 Replies and 2569 Views
CR8448-1000 2569 1
Started by Armando Mora
I bought a CR8448-1000, but the CR8400 series data sheet doesn´t list its parameters (Ir, Vmax RMS, Te, DCR and frequency). Could you tell me about them Thanks.
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2569 |
by Tony Hodges01/18/2013 11:16 AM |
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1 Replies and 2558 Views
Effect of Multiple (in-line) transducers? 2558 1
Started by Travis W
For my application, I would like to measure single-phase and three-phase test objects in two different setups: A: Volts - Amps - Watts - Power Factor B: -- C: -- A: Volts - Amps - Watts B: Volts - Amps - Watts C: Volts - Amps - Watts How much effect, if any, would the extra transducer (or two) have on the other transducers in that 'leg' of the circuit or in comparison with the other two legs It appears that the transducers have sufficient input i...
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2558 |
by Tony Hodges12/18/2012 3:56 PM |
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1 Replies and 2559 Views
3-Phase vs 1-Phase Power Measurement 2559 1
Started by Travis W
I want to accurately measure single-phase and three-phase test objects. The test set may be connected to a single-phase or three-phase power source (depending on which test bay I'm in). The information for 6250/6260 says that all three inputs are needed. When I switch over to single-phase measurement (e.g. single-phase test object), will I need to switch over to a single-element transducer such as the 6220 (which measures with one element)
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2559 |
by Tony Hodges12/18/2012 1:39 PM |
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1 Replies and 2586 Views
Model 19 2586 1
Started by Tony Heweston
Basic 240v single phase wattmeter Hi am looking at using an AD633 four quadrant multiplier and driving the input reference voltage from a resistor network across the supply and the current reference via a Model 19 current transformer with the possible addition of a LM324 to provide some gain for the Model 19 output. Max current should be about 20amps. Would this seem to be a workable application for the Model 19 product
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2586 |
by Tony Hodges12/03/2012 10:46 AM |
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1 Replies and 2594 Views
Accuracy 8459-2000N and 8450-2000 2594 1
Started by Douglas Correa
I would like to know what is the accuracy of the 8459-2000N and 8450-2000 (current transformer) thanks in advanced!!
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2594 |
by Tony Hodges09/26/2012 12:05 PM |
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1 Replies and 2722 Views
Sense current with DC output 2722 1
Started by Mark Carlile
I've got a model 19 CT and need to get a DC output signal for monitoring a 2hp single phase AC motor. Using application guide titled 'Precision rectifier circuit for CT signal conditioning' has proven unsuccessful thus far. Details: 1) I'm assuming the two back to back zener diodes are to protect circuit from in-rush current when motor is starting. 2) Line amps will be between 5 and 15 amps. Using 10 amps with a 230 turn model 19 gives .04A. Applied to a 22ohm resistor should give ab...
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2722 |
by Tony Hodges09/26/2012 12:00 PM |
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1 Replies and 2663 Views
Spice Models 2663 1
Started by J Henzel
Are there any spice models available for the CR3110-3000 current transformers Thanks JPH
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2663 |
by Tony Hodges09/10/2012 8:33 AM |
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1 Replies and 2649 Views
CR5210 output options 2649 1
Started by Darren Barnes
Are there any custom options available for the CR5210/11 Specifically, I would like to use the output to operate a relay at full-scale voltage output. I don't want to wire to a discrete FET, then to a relay. Would prefer a ready-made module. Basically, I need a current switch that will kickout another circuit at 300 ADC. Thanks.
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2649 |
by Tony Hodges08/22/2012 10:06 AM |
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3 Replies and 3489 Views
CR5300 Input Impedance 3489 3
Started by Nathan Kingston
I would like to know the input impedance of a few different versions of the CR5300. CR5310-5 CR5310-10 CR5310-50 Thanks.
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3489 |
by Tony Hodges06/21/2012 2:08 PM |
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1 Replies and 2815 Views
CR5210-1 2815 1
Started by Ed Smith
Is the CR5210-1 bidirectional If the 0-5V output version is selected, what is the 0 current and full scale (both directions) output voltage
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2815 |
by Tony Hodges05/15/2012 10:56 AM |
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3 Replies and 3560 Views
Sensing AC current 3560 3
Started by Jim dePrado
I am looking to build a way to automatically turn on the dust collector (220V 30A) in my woodworking shop when one of the other tools is turned on (110V/220V 15-30A). Would it be possible to hook up one/many of your current sensors to the hot leg of each tool's circuit and send that signal to a relay to turn on the dust collector Which products would you recommend Any help would be appreciated. Thanks, Jim
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3560 |
by kevin wood05/10/2012 12:30 AM |