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+--- Thread: Suitable CT clamps for M30 (/showthread.php?tid=7125)
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Suitable CT clamps for M30 - sumnerboy - 11-27-2024
Hi,
I am very interested in getting an M30 for monitoring the various circuits in my home. Some circuits only draw a 1-2A, some 8-10A, some 20-24A.
Can you please provide a list of suitable CT clamps that will work with the M30 for a various range of currents?
Ideally model numbers and specifications so we can source them directly if required.
Many thanks,
Ben
RE: Suitable CT clamps for M30 - admin - 11-27-2024
M30 support use by "CURRENT" type of CT sensor 2000:1. don't use "VOLTATE" CT sensor.
M30 MAX detect 120A current of CT sensor input channel.
here is CT sensor use for M30: https://shop.kincony.com/products/25a-current-transformer-for-kincony-m30-m16-energy-meter-board?_pos=2&_psq=ct&_ss=e&_v=1.0
RE: Suitable CT clamps for M30 - sumnerboy - 11-27-2024
(11-27-2024, 10:56 PM)admin Wrote: M30 support use by "CURRENT" type of CT sensor 2000:1. don't use "VOLTATE" CT sensor.
M30 MAX detect 120A current of CT sensor input channel.
here is CT sensor use for M30: https://shop.kincony.com/products/25a-current-transformer-for-kincony-m30-m16-energy-meter-board?_pos=2&_psq=ct&_ss=e&_v=1.0
Yes I am aware of that CT sensor. However after watching this video - https://www.youtube.com/watch?v=Q8mzBhdPrtM - I am concerned that sensor will not be very accurate for low power circuits.
You mentioned some different sensors with DC offset circuitry built in to help with accuracy of low power circuits.
Or are you suggesting those DL-CT03CL2.0 CT sensors are going to be accurate and work well for any household circuit?
RE: Suitable CT clamps for M30 - sumnerboy - 11-28-2024
(11-27-2024, 10:56 PM)admin Wrote: M30 support use by "CURRENT" type of CT sensor 2000:1. don't use "VOLTATE" CT sensor.
M30 MAX detect 120A current of CT sensor input channel.
here is CT sensor use for M30: https://shop.kincony.com/products/25a-current-transformer-for-kincony-m30-m16-energy-meter-board?_pos=2&_psq=ct&_ss=e&_v=1.0
Yep I am aware of the DL-CT03CL2.0 CT sensor. But after watching your video (https://www.youtube.com/watch?v=Q8mzBhdPrtM) it seems like those sensors are not very accurate for low power circuits.
Are you suggesting the DL-CT03CL2.0 will be fine for both low and high current circuits and give accurate results on the M30?
RE: Suitable CT clamps for M30 - admin - 11-28-2024
it's OK, we have used many this type CT sensor. In the video, it is just an example of using DC resistant transformers in situations where the quality of the power grid is very poor. The quality of the general power grid is not bad.
RE: Suitable CT clamps for M30 - chickenlegcat - 03-02-2025
I'm looking for what clamps I can use to measure the grid inputs, so I need clamps that support 200A.
I see this thing
https://shop.kincony.com/products/250a-ct-clamp-current-sensor
but it says "NOTE: this 250A CT sensor can't work with M30 directly. need customsize change the hardware to use it."
I'm willing to customize the hardware, but what exactly would I need to change?
RE: Suitable CT clamps for M30 - admin - 03-02-2025
because need customize change many resistance on PCB. about 60pcs of resistance, if you can replace by youself.
if made by KinCony, MOQ=100pcs of M30, we can produce it. also need use by 200A KCS firmware file.
RE: Suitable CT clamps for M30 - chickenlegcat - 03-03-2025
Replacing 60pcs of resistors does that mean replacing 2 resistors per channel for the regular 30 channels?
I am interested in measuring 200A using the L1 and L2 connections as labeled on this image: https://shop.kincony.com/cdn/shop/files/main3_8a1b69e3-00c2-4733-918e-7e90997c72e7.jpg
Would the 250A CT work for the L1/L2/L3 pins without modification?
RE: Suitable CT clamps for M30 - admin - 03-03-2025
Replacing 60pcs of resistors does that mean replacing 2 resistors per channel for the regular 30 channels? -- Yes
Would the 250A CT work for the L1/L2/L3 pins without modification? -- Not need, only need change hardware for current input ports.
RE: Suitable CT clamps for M30 - chickenlegcat - 03-04-2025
I think I misunderstood what L1/L2/L3 are for. Are they to measure the voltage of each phase?
If I want to measure the current of the L1/L2/L3 grid connections, would I need to dedicate 3 of the normal channels and replace 6 resistors?