Hunan, China
Business Type:
Manufacturer/Factory, Trading Company, Other
Management System Certification:
ISO 9001, ISO 14001
OEM/ODM Service
Sample Available
MEI Awards

Controller, Duplex Pump Controller, Duplex Pump Control Panel manufacturer / supplier in China, offering Three Phase, Duplex Pump Controller (L932-B) Phase Unbalance Protection, Water Pump Control Panel L932, Three Phase Single Pump Controller (M931) Which Has Phase Unbalance Protection and so on.

Diamond Member Since 2012
Audited Supplier
Supplier Homepage Products Three phase duplex pump Three Phase, Duplex Pump Controller (L932-B) Phase Unbalance Protection

Three Phase, Duplex Pump Controller (L932-B) Phase Unbalance Protection

Min. Order: 10 Pieces
Port: Ningbo, China
Production Capacity: 10000 Sets Per Month
Payment Terms: L/C, T/T, Western Union, Paypal
Task: Program
Structure: Closed-Loop
Mathematical Model: Linear
Signal: Continuous
Function: Automatic Control
Certification: ISO: 9001, CE

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Basic Info.

Model NO.
Leading or neutral
Transport Package
small size
HS Code
NO.1 About Product

Three Phase,Duplex Pump Controller(L932-B)Phase Unbalance Protection

Model L932-B is specially designed for pressure booster pumping system, by adopting pressure transmitter (0.5-4.5V), pump user can easily set the different pressure value and observe the dynamic pressure value in the pipeline.

Parameter form
General details
ApplicationControl & protect booster pump only
Main technical data
Start typeDirect on line
Qty of controlled pumpDublex pump
Rated input voltageAC380V Three phase
50HZ/ 60HZ
Rated output power0. 75kw-4kw (1hp-5.5hp)
5.5kw-11kw (7.5hp-5.5hp)
Protection function 

Over load protection
Pump stalled protection
Dry run protection with sensor free
Under voltage protection
Over voltage protection
Repeat start protection
Phase unblance protection
Phase reversal protection
Open phase protection

Control characteristic
Connecting 0.5-4.5V pressure transmitter to replace pressure switch Duplex pump control
.Main pump / standby pump automatically alternate
.Main pump / standby pump automatically switch against malfunction
.Standby pump participate running if required
Other featuresLCD screen displaying dynamic real time pressure value & pump running status
Pump shaft anti-rust
Pump accumulative running time displaying
Pump last five faults record displaying
Present one dry contact point (BA port)
Present RS485 port
Present user remote monitor
LCD screen locked function under Auto state
Push button calibration
Main installation data
Working temperature
Working humidity
Degree of protection
Install position
Unit dimension (L x W x H)
-25ºC-- +55ºC
20%--90%RH, no drips concreted
Wall mounting

Typical Application Example
Three Phase, Duplex Pump Controller (L932-B) Phase Unbalance Protection

Typical usage scenarios include
    -Holidays houses
    -Water supply from wells
    -Irrigations of greenhouses, gardens, agriculture

    -Rain water reuse
    -Industrial plants
    -Waste water tank / Sewage sink

NO.2 About us

1)Company Information 
     Brief Introduction
Since 2001, Leading Science & Technology company has been providing pump control and protection solutions to pump users.
Today Leading Science & Technology offers a wide range of pump control panel & pump control accessories for the pump control and protection market.

Our products: Intelligent Pump Controller, Sewage Pump Controller, Booster Pump Controller, Deep Well Pump Control Box, Submersible Pump Controller, Pump Motor Starter,Programmable Logic Controller, IOT Pump Controller, Reverse Osmosis Controller.

For more information, please visit: 

    Our office & Team
Three Phase, Duplex Pump Controller (L932-B) Phase Unbalance Protection

Leading company has three major departments:
1. Sales Team
2. R&D Team
3. Production Team
Sales team collect the information and technical requirements from pump manufacturers, pump distributors, pump users etc and report to our R&D team. According to the information, R&D team will evaluate firstly and start to research,develop and test the pump controller. Finally once the pump controller is workable, our production team will produce.

With our team members' close cooperation, Leading company has been developing many unique control and protection technology for pump industry.

2)Our trading fair&Communication&Feedback
Three Phase, Duplex Pump Controller (L932-B) Phase Unbalance Protection
Three Phase, Duplex Pump Controller (L932-B) Phase Unbalance Protection

NO.3 Our production capacity

Three Phase, Duplex Pump Controller (L932-B) Phase Unbalance Protection
Welcome to our factory field trip.

N0.4 FAQ       
Can i have some samples ?
Yes ,we can send you samples for testing,contact us for details 
What's delivery time ?
For standard pump control panel ,it usually takes about 7 working days;
For non-standard,it usually takes 15-20days ,please contact us for details;

Can I do OEM or ODM ?
Yes,we have our own engineering team and we do accept OEM and ODM,but there is ordering quantity requirement;
How does your factory do the quality control ?
Our production process follow up the ISO standard and we control the product quality from the raw materials to the finished product,each of our control panel will be fully assembled and strictly tested before packing and shipping ;
What is the approximate life time for your control panel ?
The designed life time of control panel is 8 years ;
What is your after sales service policy ?
According to the ordering quantity,we will give some free spare parts or controller for maintenance or replacement and we will give technical training;
How can i trust you ?
We have being developing the pump control panel manufacturing and selling for 15 years ,now many pump supplier from China and overseas are using our controller to control and protect their pump and motor.

Where is your location and transportation guide?
From Guangzhou to Changsha takes 1hour by air, 2.5hour by high speed train
From Shanghai to Changsha takes 1.5hour by air, 5hour by high speed train
From Beijing to Changsha takes 2.5hour by air
From Hong Kong to Changsha takes 2hour by air

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