Three Phase Full Protection Pump Control Panel L931

Task: Program
Structure: Closed-Loop
Mathematical Model: Non-Linear
Signal: Continuous
Function: Automatic Control
Certification: CE
Customization:

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Basic Info.

Model NO.
L931
Condition
New
Customized
Customized
Material
Plastic
Transport Package
Paper Carton
Specification
CE
Trademark
Leading Science & Technology
Origin
China
HS Code
90328990
Production Capacity
5000PCS/Year

Product Description

Application: Control & Protect three phase pump, DOL
Single Pump Control Panel Model L931

L931 is a pump Automation designed to protect three-phase pumps from dry-well ,dead-head,jammed impeller,rapid cycle,overvoltage and undervoltage ,three unbalnace ,open phase,Phase reversal ,pump installed etc conditions and control pump on/off automatically as per the external signal from float switch ,pressure controller ,probe etc .
It can protect and control 380v,0.75-15kw pumps,
A calibration adjustment allows L931 to be calibrated your specific pumping applications,thereby reducing the possibility of false or nuisance tripping.
A proprietary microcontroller based on voltage,power factor and current-sensing circuit constantly monitors for power fluctuations ,overcurrent and underload conditions.
When an abnormality ,such as loss of suction,is detected ,L931 deactivates its output AC Contact and directly disconnects the pump motor.
L931 then begins its user selectable "restart delay"(dry-well recovery)timer.
When the timer expires or power is removed and reapplied ,L931 reactivates its output AC Contact and allows the pump to turn back on .

Our special design makes it a very reliable and sensitive protection against pump dry running without installation of any probe/sensor in the deep well.

 
Model L931-B
Main technical data  
.Start type Direct on line
. Qty of controlled pump Single pump
. Rated input voltage: AC380V Three phase
50HZ/ 60HZ
. Rated output power: 0. 75kw-4kw (1 hp-5. 5hp)
5. 5kw-11kw (7.5hp-15hp)

15kw (20hp)
 
 
 
 
Protection function
Over load protection
Pump stalled protection
Dry run protection
Under voltage protection
Over voltage protection
Repeat start protection
Phase unbalance protection
Phase reversal protection
Open phase protection
 
Control characteristic
Connecting 0.5-4.5V pressure transmitter to replace pressure switch
Pump start and stop according to different pressure value setting
 
 
 
Other features
LCD screen displaying dynamic real time pressure value
Pump start and stop pressure value can be easily setting on the LCD screen
Pump accumulative running time recording
Pump last five faults record displaying
Presenting 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
IP54
Wall mounting
310 x 220x 120mm


Main Spec:
Rated Input Voltage: AC 220V/50HZ, Three Phase
Rated Output Power: 0.75KW-4KW / 5.5KW-11KW / 15KW

Main Features:
-Built in function switch:
Applied for water supply by liquid level control or booster
Applied for drainage by liquid level control
-Auto/Manual switch
-Starts and stops the pump in accordance with the different liquid level or pressure setting.
-Push Button Calibration
-Automatically stop the pump in the case of water shortage, protecting it from drying running without installing the float switch or liquid probe in the well
-Pump accumulative running time displaying
-Pump last five fault record displaying
-LCD displays pump running information
-Protect the pump against Over /Under Voltage; Over Current; Pump Shaft Rust; Rapid Cycle etc.
-Grade of Protection IP 54
-Visual & Audio alarm for fault prompt
-Present remote monitor
-Present one dry contacting point
-Visual & Audio alarm for fault prompt

About us:
Hunan Leading Science & Technology Development Co., Ltd is the professional manufacturer of intelligent pump control system applied for monitoring and protecting of pumps in home and industry use;

Leading Science & Technology has always been a leader in the production, research & development of intelligent pump control system and relative pump control products. Million of our prime products have been sold on the market for stable quality and reasonable price.

Leading Science & Technology has established stable relations with many pump producers and distributors from China and overseas.
Till now, Leading Science & Technology we have passed CE, ISO9001: 2008 certificate.

Three Phase Full Protection Pump Control Panel L931
Three Phase Full Protection Pump Control Panel L931

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