current sensing relay help

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Kaylee34

Kaylee34

Silver Supporter
Dec 10, 2021
367
Virginia
Pool Size
25000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
CircuPool Universal40
Got home late last night and the electrician had been out sometime during the day. I have power to my house again! Yay! Unfortunately, what I'd asked for didn't actually happen and I only have 220v available. Right now I'm just happy to have electricity. I have to get the new equipment plumbed in and wired myself. I want to add a current sensing relay for the SWCG so it will not run if the pump isn't running. No automation, heaters, etc. just a variable speed pump and SWCG. Separate circuits for pump and SWCG. I have this current sensing relay Adjustable Current Sensing Relay: 240V AC, Adj 2.00 to 20.00A, SPDT, 10A @ 240V but I'm not sure exactly how to wire it since I have to run the SWCG on 220v. Do I need to add anything else? Help please! Thank you!
 

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Thank you all! I understand some of it but what’s eluding me is really elusive. I chatted with @JT2700 and he hasn’t wired his yet.

Off to the hardware store for more elbows then back to plumbing. I’ll be so happy to have this done!
 
Ok, here's how to wire your CSR. The diagram only shows one pass-through of the L1 line through the current sensing coil, but you are going to want to loop it through at least four times. With four loops, the current sense range is reduced to 0.5 to 5 amps. With a variable speed pump, you will run at the lowest speed that still pumps enough flow to close the SWG's flow switch. At these low speeds, you will not be pulling much current, so getting the trip range low will give you some room to use trip current adjustment. Try to get a couple of more loops through it. Six loops will give a range of 0.33 to 3.33 amps. This is the same trip range that I have and I got my trip adjustment at 20%. I haven't touched it since the day I installed it.

The selector switch in the top left-hand corner is to be slid over to the left, selecting overcurrent.

CSR.png
 
@laprjns Thank you SO MUCH! 😘

So to make sure I have this right, both the motor and SWG will be on the same breaker? Nothing goes to pin 5 on the CSR?

The electrician added a separate 20 amp 2 pole breaker in the panel for the SWG.
 
Kaylee34 said:
So to make sure I have this right, both the motor and SWG will be on the same breaker?
Click to expand...
If there is another breaker available then yes use one for the motor and the second for the SWG.

Nothing goes to pin 5 on the CSR?
Click to expand...
No connnection to Pin 5. It's the normally closed pin.

Kaylee34 said:
The electrician added a separate 20 amp 2 pole breaker in the panel for the SWG.
Click to expand...
Even better, now you can shut off the power to the SWG without affecting the motor.
2_Breaker_CSR.png
 
@laprjns You’re brilliant! It was the “normally closed” pin 5 and the jumper between 3 and 4 that I was stuck on. Thank you so much!

I’ll post up pics later today once I get everything done. Thank you again!
 
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Well, looks like I might get things wired today but still no pump or SWG. Went in the garage, cut on the radio, fired up my saw and bam! No power. Main tripped in the sub panel. :( AC not working and clothes dryer shut off. Lights in the house being weird. Called the electrician. He said it sounds like I’ve dropped a leg and sorry he’ll come as soon as he can but it will be at least 2 weeks. Meantime he will see if he can get someone else out to check it.
 

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Long, frustrating day with nothing much accomplished. At this rate it will be time to shut everything down for the year before it’s finished.
 
So.... caught Covid. Yay. But, I'm very happy to report that the wiring finally got done and so far, seems to be working perfectly. 4 loops is all that will physically go through the coil with 12ga wire. Control panel shuts down if the pump is turned off. Haven't tested or played with it beyond that yet at this point but if, big if, time and fatigue allow this weekend, I'll run a few tests. Have a suction side air leak to find and fix also.
 
laprjns said:
Ok, here's how to wire your CSR. The diagram only shows one pass-through of the L1 line through the current sensing coil, but you are going to want to loop it through at least four times. With four loops, the current sense range is reduced to 0.5 to 5 amps. With a variable speed pump, you will run at the lowest speed that still pumps enough flow to close the SWG's flow switch. At these low speeds, you will not be pulling much current, so getting the trip range low will give you some room to use trip current adjustment. Try to get a couple of more loops through it. Six loops will give a range of 0.33 to 3.33 amps. This is the same trip range that I have and I got my trip adjustment at 20%. I haven't touched it since the day I installed it.

The selector switch in the top left-hand corner is to be slid over to the left, selecting overcurrent.

View attachment 425436
Click to expand...

I know this is old, but are you concerned that "L1" is live all the time regardless of the CSR position?
 
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