Search

Premium Membership

Get 15% OFF on Pro Premium Plan with discount code: UX21M. Study specialized electrical engineering articles and papers in Low- and High-Voltage areas.

Home / Technical Articles / Soft starter for potable water well pump (wiring diagram, troubleshooting example)

Introduction to application

This article will analyze a real example of an electrical switchboard for a potable water well pump, containing a soft starter as one of the major components. Besides the explanation of the wiring diagram and working logic, some technical problems which were occurred during start-up and operation will be described also.

Wiring diagram and troubleshooting the soft starter for potable water well pump
Wiring diagram and troubleshooting the soft starter for potable water well pump

Well pump is installed underground, on the bottom of vertical, narrow, about 30 meters long pipe. From that depth, clean water is transferred via a pipeline constructed above the ground to a large reservoir tank at the top of steel made supporting structure in the form of a tower.

The pump’s flow is determined by its construction and hydraulic resistance of the pipeline. This resistance consists of two components:

  • Static: which is defined by the height difference between a reservoir as a destination point and pump as source point; and
  • Dynamic: which is defined by the friction of pipeline’s inner walls for given flow rate. No flow control by electrical means was required, hence the use of variable frequency drive was not necessary.

Table of contents:

  1. Basics about soft starters
  2. Example of wiring diagram
  3. Troubleshooting example
    1. Problem
    2. Solution

Premium Membership Required

This technical article/guide requires a Premium Membership. You can choose an annually based Plus, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers. With EEP’s premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.

Check out each plan’s benefits and choose the membership plan that works best for you or your organization.

Note that premium members with an Enterprise subscription plan have a 50% discount on all EEP Academy’s video courses and bundles.

SPECIAL OFFER:15% OFF on Pro premium plan with discount code: UX21M

Log In »Learn More »

Premium Membership

Get access to premium HV/MV/LV technical articles, electrical engineering guides, research studies and much more! It helps you to shape up your technical skills in your everyday life as an electrical engineer.
More Information
author-pic

Miodrag Kokotovic

Graduated from Faculty of Electrical Engineering, within University of Belgrade, in the field of electrical power systems. Expert in electrical part of tender preparation, design, procurement, construction and commissioning of treatment plants and pumping stations, electrical power quality and energy management.

Leave a Comment

Tell us what you're thinking... we care about your opinion!

Electrical Engineering Courses

Learn to design electrical power and industrial automation systems through professional video courses.