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0 Replies and 217 Views Compatible CR7310 current transformer  217  0 Started by  Warren Massey The current transformer used as an internal transformer on a CR7310 is a reasonable size for an application of mine but the application, because it will require 12 modules and their current transformers in two compact groups (modules in one, transformers in the other) it really does need to use an external coil. The two external coils suggested for use with the CR7310 are much too big for this application. Can you suggest a smaller external coil, similar in size to the the internal coil, that w...
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12/12/2023 4:07 PM
0 Replies and 895 Views CR5200 Series  895  0 Started by  Andrew Miller Hello. We often interchange equipment which can have rating of 4 Amps DC to 50 Amps DC. The equipment has a standby current (the draw used to keep the equipment ready for operation) draw of 2-7 Amps depending on the equipment. While operating, the equipment may use 3-21 Amps. Our purpose in using the transducer is for very accurate differences between standby and the initiation of operation. At times this may be only a few hundred milliamps; we have no interest in the operational amperage of th...
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12/18/2021 7:22 PM
0 Replies and 746 Views CR8300 Series  746  0 Started by  Lee Kia Ching Dear Sir/Madam, May I know if CR8350 is able to meet the requirement of <0.5 total accuracy over the temperature range of -40 to 85 °C, taken into consideration of linearity error as well Let say I am using burden of 3.4 Ohm with 100A max input current. Thank you. Regards Lee Kia
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10/26/2021 3:22 AM
0 Replies and 1704 Views CR-45 and/or CR-2550  1704  0 Started by  Fred Kersten I use heating cables to keep my home gutters from freezing. I have 3) cables; each connected to separate 15amp 110/120 VAC circuit breakers with separate illuminated switches. This lets me know when the power to each cable is turned on or not but doesn't let me know if the cable has failed or not. Two of the cables draw 0.83 - 0.75 Amps each at 120VAC. The third draws 3.35 Amps at 120VAC. Measurements were taken with a home grade Radio Shack digital multi-meter using a custom wiring plug in harn...
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12/22/2020 2:43 PM
0 Replies and 1334 Views CR5211S-50  1334  0 Started by  Kip Guerrero Hi, I've had five current transducer stop sending output voltage shortly after installing them in our system. I suspect somehow our system is 'burning' them out. On initial install we would see the output voltage we would expect but after one or two checks the output voltage would go to -2.9VDC and stay there even if current was present. We are using the current transducer for measuring Welder current a max of 35AMPs DC. We suspected that there might be in-rush or a spike from the we...
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09/09/2020 7:28 AM
0 Replies and 1088 Views CRD5110 Modbus  1088  0 Started by  Steve Fry I'm writing a program in LabView to communicate with CRD5110-150-25M serial transducer. I can set up New Serial Master for RTU, Unit ID 1, baud rate 9600, parity none, flow control none. I try to read input register location x10 but the read times out and does not return anything. I have increased the timeout to 3 seconds and it still does not work. Anyone use LabView with this transducer Or any other language with Modbus Thanks
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07/28/2020 2:45 PM
1 Replies and 1799 Views DC current transducer output  1799  1 Started by  Lorne Lambert I have a CR9321-NPN that I thought it might be activated by DC current with the information on the label. I am hoping I could be guide to a DC current switch with the same out put as the CR9321-NPN as it is connected to a 1 wire device supplied by The 24 VDC solenoid is 5000 ohms so the current is minimal. Thank you Lorne
1 1799
by  Joe SchlerethJump to last post
01/06/2020 9:50 AM
3 Replies and 1977 Views CR5200 supply voltage range  1977  3 Started by  brian w Putting CR5210 in a boat with 24 volt nominal power supply with actual range more like 22 to 32 volts. Can the CR5210 handle this supply voltage and if so are there accuracy implications
3 1977
by  Joe SchlerethJump to last post
08/13/2019 9:51 AM
7 Replies and 4180 Views Need Sump Pump Alarm  4180  7 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
7 4180
by  Araldo JanesJump to last post
05/07/2019 12:55 PM
5 Replies and 6568 Views cr9350-aca  6568  5 Started by  jim dayringer I'm using a cr9350-aca to energize a small interposing relay with a 120V coil and power draw of 9ma. Will I need a snubber circuit I found an old cut sheet for the cr9321-aca that showed a 2k ohm resistor and a .1uf capacitor as a recommended snubber. When I tried this it made the relay coil hum. The operation in either case was the same. Do I need the snubber to protect the current switch Thanks
5 6568
by  Joe SchlerethJump to last post
07/24/2018 4:11 PM
2 Replies and 2316 Views DC Current Transducer transient protection  2316  2 Started by  Joel Huang I am looking at the CR5200 Series datasheet and I cannot find any information on the voltage transient tolerated in the input current line. We currently use the 936 Series from AAC which specifies 500V/uS voltage tolerance. Is there a spec for the CR5200 Thank you.
2 2316
by  Even ChuJump to last post
07/24/2018 11:36 AM
1 Replies and 2351 Views CRD5110-300-5-M Modbus RTU  2351  1 Started by  phil hughes Anybody familiar with the Modbus commands to retrieve Data (power/amps/pf) from a CRD5110-300-5-M. We have a Allen Bradley PLC Micrologix 1100.
1 2351
by  Tony HodgesJump to last post
11/08/2017 12:34 PM
2 Replies and 2483 Views CR5310-200  2483  2 Started by  Stephanie Girard How will this transducer behave if there is some current ripple The temperature rating is 50C. What is the maximum temperature this transducer will continue operating at
2 2483
by  Stephanie GirardJump to last post
07/21/2017 4:34 PM
1 Replies and 35770 Views I need spice parameter of CT3111-3000 for simulation of CT saturation effect  35770  1 Started by  YoungSik Kim Are there any spice models available for the CR3110-3000 current transformers I want to model the saturation of transformer, so I needs spice parameter such as Hc(Coercive force), Bs(Remnant flux density), Br(Remnant flux density), A(Cross sectional area), Lm(Magnetic Length,Mean Path Length), Lg(Length of gap). N(Number of turns) thank you ref. site :
1 35770
by  Tony HodgesJump to last post
06/14/2017 10:17 AM
1 Replies and 2809 Views CR5210-5  2809  1 Started by  Emma Liu The input range is 0-5ADC and output range is 0-5VDC, but I can get the output to go up to 14.15VDC and saturated after this. Is this normal
1 2809
by  Tony HodgesJump to last post
05/24/2017 1:47 PM
1 Replies and 4467 Views CR8350-2000-F step response  4467  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
1 4467
by  Tony HodgesJump to last post
03/21/2016 1:53 PM
1 Replies and 2910 Views CR9580 Questions  2910  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...
1 2910
by  Tony HodgesJump to last post
08/17/2015 5:11 PM
0 Replies and 2735 Views Sensors for TDD,THD,PF  2735  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 3654 Views CR5220-300  3654  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!
0 3654
02/20/2015 7:15 PM
0 Replies and 2830 Views CR4395 For Open Heater Application  2830  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...
0 2830
02/16/2015 5:28 PM
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