Greetings good people,

Has anyone used one of these cheap Chinese soft starter modules on pump motor running off a solar inverter?

The modules are SCR based with adjustable soft-start time and voltage (0-30 seconds, 150-250Vac). There's no integrated bypass contactor.

I want to consider using one instead of a VFD to run a 1.5kW (2hp, 10.8A full load current, 35A starting current) single-phase submersible pump off a 5kW Deye hybrid.

A photo of such a module with its heatsink is attached. Thank you.

 

Edited August 15, 20224 yr by Kilowatt Power
Edit: Remove duplicate picture

Get yourself one of these jojo pumps.

https://www.jojo.co.za/products/1-5kw-vsd-booster-pump/

Pricey but worth it.

 Makro

That soft starter is for 3 phase.

6 minutes ago, FuzzyBullets said:

 Makro

Sorry. You looking for a submersible pump.

19 minutes ago, FuzzyBullets said:

That soft starter is for 3 phase.

Not if you see it only has 4 wires. Not 6 as per the picture below the post. 2 are marked input and 2 output.. This is then wired through to the pump.

Should work.

3 hours ago, FuzzyBullets said:

Get yourself one of these jojo pumps.

Thanks but unfortunately I already have a single phase submersible pump.

7 hours ago, Scorp007 said:

That soft starter is for 3 phase.

I'll get a single-phase soft starter like the one below

17 hours ago, FuzzyBullets said:

Should work.

I'll give it a go based on the number of positive reviews I've read on AE. Shall definitely feedback after installation.

On 2022/08/16 at 9:48 AM, Kilowatt Power said:

I'll give it a go based on the number of positive reviews I've read on AE. Shall definitely feedback after installation.

Any update on how the soft starter worked?

On 2023/05/16 at 11:41 PM, Jack007 said:

Any update on how the soft starter worked?

Hello @Jack007. I ended up getting a different series by the same manufacturer. The slightly more advanced version is branded Noker and comes with a built-in bypass contactor, comprehensive motor protection functions and optional Modbus communication. Working like a charm! 

We manufacture single phase soft starter locally in SA.

1.1kw single phase borehole pump inrush of 22Amp brought down to 9Amp inrush.

Check our website. www.teralec.co.za

Edited May 20, 20233 yr by Teralec

19 hours ago, Teralec said:

We manufacture single phase soft starter locally in SA.

1.1kw single phase borehole pump inrush of 22Amp brought down to 9Amp inrush.

Check our website. www.teralec.co.za

Hi Teralec. I am in PE. What do you have to support a 0.55kw or 0.75kw standard house water tank pump soft start? Looking to try save my inverter over the long run.

Many thanks

James

[email protected]

Hello @Kilowatt Power, Wanted to get an update on how you got on with the Noker soft starter. Any issues as of yet? I am looking to power mine off my inverter too!

Does anyone have a (Chinese) soft starter module for sale, I do not wish to wait a few months for delivery from Ali express. I have a 1kw single phase borehole  pump - startup current too high for my inverter. Can contact me at [email protected]

Thanks. Koos. 

9 minutes ago, Beugleuce said:

Does anyone have a (Chinese) soft starter module for sale, I do not wish to wait a few months for delivery from Ali express. I have a 1kw single phase borehole  pump - startup current too high for my inverter. Can contact me at [email protected]

Thanks. Koos. 

They are available at Electromann SA.

https://electromannsa.co.za/shop-the-latest-affordable-gadgets-online/220v-single-phase-motor-soft-starter-module-controller-4kw/?gad_source=1&gclid=CjwKCAiAudG5BhAREiwAWMlSjJP_FsNCaLqM35yuMTaKQ45Y49kV__1T5MpZ5oe7pAS8M8GfaijbmBoCOy4QAvD_BwE