Correct submersible voltage?


Old 03-18-08, 12:31 AM
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Correct submersible voltage?

My 2 hp, 3 wire submersible recently stopped producing water. I have a Franklin 2 HP deluxe controller. Well depth is about 500'. Pump seems to be running and doesn't trip. I did the resistance checks listed inside the control box, but I'm not positive I did them correctly. Anyway, the voltages I'm getting at both the control box and the j-box at the well head are as follows: red=280v, yellow=125v, black=125v. Do these voltages seem correct? Is it possible that replacing the control box might solve the problem or am I looking at having the pump pulled? I have no reason to suspect the water isn't there, no complaints from the neighboring properties. Also, the past couple of times I've pumped into my holding tank, I got the impression the gpm output was dropping, then this past weekend, nothing. So, it didn't quit all at once.
Thanks. Al
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Old 03-18-08, 04:57 AM
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Where are you located? The voltages don't follow US logic, and appear to be high. Where are you measuring the voltages from and to? (Ground, each other, etc.)
Old 03-18-08, 10:35 AM
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have to ask chandler why you believe the voltage appear to high.

Nominal voltage in the US is 120 but the POCO is allowed +-10% which would allow 108 to 132 volts. I work in and area where the 480 volt (nominal) supply runs an even 500 volts all the time.

the 280 volt reading is from the start winding circuit and a cap will cause you to have a high reading. That is what it is designed to do.

ark, do you have access to a clamp on ammeter? and are you very comfortable with electricity?
Old 03-19-08, 01:02 AM
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Thanks for responding...I'm located in Young, AZ. I'm measuring voltage to ground from each of the three wires individually. I'm pretty comfortable with electricity, but need to get a clamp-on meter. I'll get one before I head back up.(the well in question is on a piece of property that we use on the weekends). Also, the whole set-up is only about 2 years old. So, what tests would you suggest I run next?
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