Lauritz Knudsen MU-G25 Three Phase Submersible Pump Controllers (With Single Phase Preventer) of 25HP| Relay Range 28-42A | 360V AC | FASD (With Wideband Coil)
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Lauritz Knudsen MU-G25 Three Phase Submersible Pump Controllers (With Single Phase Preventer) of 25HP| Relay Range 28-42A | 360V AC | FASD (With Wideband Coil)
- Description
- Specifications
- Documents
- Warranty
- Reviews
Description
About the Product
The Three Phase Fully Automatic Star Delta Controller for Submersible Pump Application is a control & protection unit designed for starting & operating high-capacity three phase submersible pump motors using reduced voltage starting.
It automatically transitions from star to delta configuration to reduce starting current & mechanical stress, making it suitable for borewell installations, agricultural irrigation systems, & industrial water pumping applications where reliable motor control & protection are essential.
How the Star Delta Controller Works
This controller ensures smooth & efficient motor operation through an automatic staged starting process:
• Starts the motor in star configuration with reduced voltage
• Minimizes inrush current during startup
• Automatically switches to delta configuration after a preset interval
• Enables efficient operation at full motor capacity
• Reduces electrical & mechanical stress on the motor & connected equipment
• Improves overall system reliability during motor startup
Star-delta controllers are widely used for high-capacity motors where direct-on-line starting may lead to excessive current draw & voltage fluctuations.
Electrical Configuration
• Phase: Three Phase
• Control Type: Fully Automatic Star Delta Starter
• Application: Submersible pump motor control
• Function: Reduced voltage motor starting & protection
• System Compatibility: Low-voltage three phase systems
• Usage: Automatic star-to-delta transition
Construction & Design
The controller is engineered for reliable performance in demanding pumping applications:
• Integrated star-delta switching & control system
• Heavy-duty enclosure suitable for panel-mounted installations
• Designed for stable & continuous motor operation
• Optimized electrical arrangement for dependable performance
• Suitable for agricultural, commercial, & industrial environments
Safety & Protection
• Reduces high starting current during motor startup
• Minimizes stress on motor windings & rotating components
• Protects against overload conditions
• Provides phase-related protection for motor safety
• Improves equipment life & operational reliability
• Ensures safe & controlled motor operation
Mounting & Durability
• Suitable for panel mounting installations
• Designed for pump control panels & motor starter systems
• Suitable for outdoor & agricultural installations when housed in appropriate enclosures
• Resistant to demanding environmental conditions
• Designed for long operational life & dependable service
Application Domains
• Submersible pump systems
• Deep borewell installations
• Agricultural irrigation systems
• Industrial water pumping systems
• High-capacity motor control applications
• Water supply & distribution systems
Key Features
• Fully automatic star delta controller
• Reduced voltage motor starting capability
• Automatic star-to-delta transition
• Reduces starting current & motor stress
• Integrated motor control & protection functionality
• Suitable for high-capacity submersible pump applications
• Designed for agricultural & industrial use
Applications
• Agricultural irrigation projects
• Borewell pump installations
• Industrial pumping systems
• Water distribution networks
• Motor control panels
• Large-scale water management systems
FAQs
1. What is a star delta controller used for?
Ans: It is used to start three phase motors with reduced voltage, helping reduce starting current & improve system protection.
2. Why is star delta starting preferred for larger motors?
Ans: It minimizes inrush current & mechanical stress, making it suitable for high-capacity motors.
3. How does the automatic transition work?
Ans: The controller starts the motor in star mode & automatically switches to delta mode after the motor reaches the required operating condition.
4. Is this controller suitable for submersible pumps?
Ans: Yes, it is specifically designed for three phase submersible pump motor applications.
5. Does the controller provide motor protection?
Ans: Yes, it helps protect against overload conditions & phase-related electrical faults.
6. Where is this controller commonly installed?
Ans: It is commonly used in borewell installations, irrigation systems, industrial pumping stations, & water management applications.
7. What are the benefits of automatic operation?
Ans: Automatic operation improves reliability, reduces manual intervention, & ensures consistent motor performance.
Overview
| Coil Voltage | 360V |
|---|---|
| DOL/SASD/ FASD | FASD |
| Conformity to Standard | IS/IEC 60947-4-1 |
| Contactor Electrical Life - AC3 | 1 Million Operations |
| Discount Percentage | Between 0-10 % |
| Mechanical Life | 10 Million Operations |
| Service temperature | -5˚C to 55˚C |
| type | MU-G25 |
| Rated Impulse Withstand Voltage | 8kV |
| Rated Insulation Voltage | 690V |
| With/ Without WLC | Without WLC |
| HP | 25HP |
| Length(mm) | 400 |
| Breadth(mm) | 147 |
| Height(mm) | 408 |
| Relay Range (A) | 28 - 42 A |
Warranty
- All products listed in the price list are covered by a warranty against manufacturing defects for a period of 18* months from the date of purchase.
- For Lauritz Knudsen MCBs & Isolators mounted inside Lauritz Knudsen Distribution Boards, an extended warranty of 5 years is provided.
- In the event of a defect due to faulty workmanship or other associated reasons, the manufacturer will, at its discretion, remedy the defect or replace the faulty parts or the entire product as soon as possible, free of cost.
- This warranty is subject to proper usage and efficient maintenance and does not cover defects arising from fire, accidents, inefficient maintenance, faulty operation, or deliberate or accidental damage.
- The warranty does not cover damage to power electronic components such as thyristors & IGBTs, which primarily fail due to over-temperature or over-voltage. Users must take adequate precautions to eliminate such conditions.
- The manufacturer shall not be responsible or liable for any special, incidental, social, or consequential losses (including loss of profits), punitive damages, injury, or damages of any kind solely attributable to defect or failure of its products.
- The manufacturer shall not be liable in any manner for issues related to or failure in the performance of any other equipment to which the product is connected.
Reviews
Description
About the Product
The Three Phase Fully Automatic Star Delta Controller for Submersible Pump Application is a control & protection unit designed for starting & operating high-capacity three phase submersible pump motors using reduced voltage starting.
It automatically transitions from star to delta configuration to reduce starting current & mechanical stress, making it suitable for borewell installations, agricultural irrigation systems, & industrial water pumping applications where reliable motor control & protection are essential.
How the Star Delta Controller Works
This controller ensures smooth & efficient motor operation through an automatic staged starting process:
• Starts the motor in star configuration with reduced voltage
• Minimizes inrush current during startup
• Automatically switches to delta configuration after a preset interval
• Enables efficient operation at full motor capacity
• Reduces electrical & mechanical stress on the motor & connected equipment
• Improves overall system reliability during motor startup
Star-delta controllers are widely used for high-capacity motors where direct-on-line starting may lead to excessive current draw & voltage fluctuations.
Electrical Configuration
• Phase: Three Phase
• Control Type: Fully Automatic Star Delta Starter
• Application: Submersible pump motor control
• Function: Reduced voltage motor starting & protection
• System Compatibility: Low-voltage three phase systems
• Usage: Automatic star-to-delta transition
Construction & Design
The controller is engineered for reliable performance in demanding pumping applications:
• Integrated star-delta switching & control system
• Heavy-duty enclosure suitable for panel-mounted installations
• Designed for stable & continuous motor operation
• Optimized electrical arrangement for dependable performance
• Suitable for agricultural, commercial, & industrial environments
Safety & Protection
• Reduces high starting current during motor startup
• Minimizes stress on motor windings & rotating components
• Protects against overload conditions
• Provides phase-related protection for motor safety
• Improves equipment life & operational reliability
• Ensures safe & controlled motor operation
Mounting & Durability
• Suitable for panel mounting installations
• Designed for pump control panels & motor starter systems
• Suitable for outdoor & agricultural installations when housed in appropriate enclosures
• Resistant to demanding environmental conditions
• Designed for long operational life & dependable service
Application Domains
• Submersible pump systems
• Deep borewell installations
• Agricultural irrigation systems
• Industrial water pumping systems
• High-capacity motor control applications
• Water supply & distribution systems
Key Features
• Fully automatic star delta controller
• Reduced voltage motor starting capability
• Automatic star-to-delta transition
• Reduces starting current & motor stress
• Integrated motor control & protection functionality
• Suitable for high-capacity submersible pump applications
• Designed for agricultural & industrial use
Applications
• Agricultural irrigation projects
• Borewell pump installations
• Industrial pumping systems
• Water distribution networks
• Motor control panels
• Large-scale water management systems
FAQs
1. What is a star delta controller used for?
Ans: It is used to start three phase motors with reduced voltage, helping reduce starting current & improve system protection.
2. Why is star delta starting preferred for larger motors?
Ans: It minimizes inrush current & mechanical stress, making it suitable for high-capacity motors.
3. How does the automatic transition work?
Ans: The controller starts the motor in star mode & automatically switches to delta mode after the motor reaches the required operating condition.
4. Is this controller suitable for submersible pumps?
Ans: Yes, it is specifically designed for three phase submersible pump motor applications.
5. Does the controller provide motor protection?
Ans: Yes, it helps protect against overload conditions & phase-related electrical faults.
6. Where is this controller commonly installed?
Ans: It is commonly used in borewell installations, irrigation systems, industrial pumping stations, & water management applications.
7. What are the benefits of automatic operation?
Ans: Automatic operation improves reliability, reduces manual intervention, & ensures consistent motor performance.
Overview
| Coil Voltage | 360V |
|---|---|
| DOL/SASD/ FASD | FASD |
| Conformity to Standard | IS/IEC 60947-4-1 |
| Contactor Electrical Life - AC3 | 1 Million Operations |
| Discount Percentage | Between 0-10 % |
| Mechanical Life | 10 Million Operations |
| Service temperature | -5˚C to 55˚C |
| type | MU-G25 |
| Rated Impulse Withstand Voltage | 8kV |
| Rated Insulation Voltage | 690V |
| With/ Without WLC | Without WLC |
| HP | 25HP |
| Length(mm) | 400 |
| Breadth(mm) | 147 |
| Height(mm) | 408 |
| Relay Range (A) | 28 - 42 A |
Warranty
- All products listed in the price list are covered by a warranty against manufacturing defects for a period of 18* months from the date of purchase.
- For Lauritz Knudsen MCBs & Isolators mounted inside Lauritz Knudsen Distribution Boards, an extended warranty of 5 years is provided.
- In the event of a defect due to faulty workmanship or other associated reasons, the manufacturer will, at its discretion, remedy the defect or replace the faulty parts or the entire product as soon as possible, free of cost.
- This warranty is subject to proper usage and efficient maintenance and does not cover defects arising from fire, accidents, inefficient maintenance, faulty operation, or deliberate or accidental damage.
- The warranty does not cover damage to power electronic components such as thyristors & IGBTs, which primarily fail due to over-temperature or over-voltage. Users must take adequate precautions to eliminate such conditions.
- The manufacturer shall not be responsible or liable for any special, incidental, social, or consequential losses (including loss of profits), punitive damages, injury, or damages of any kind solely attributable to defect or failure of its products.
- The manufacturer shall not be liable in any manner for issues related to or failure in the performance of any other equipment to which the product is connected.