Multiple constant pressure water supply frequency inverter

Features

Multiple constant pressure water supply frequency inverter
Special for constant pressure water supply system
Plastic(0.4~18.5KW) and steel case(22KW and above)
Build-in more than 13 years' water treatment experiences
Modbus communication for master-slave pumps
1AC 220V, 0.4kw~315kW
3AC 220V, 0.4kw~315kW
3AC 380V, 0.4kw~630kW
Fully automatic operating
Infineon IGBT inside
Easy installation, easy commissioning
High control accuracy
Robust design
Very less wiring connection
Constant Pressure controlled stably

Multiple constant pressure water supply frequency inverter
Specifications
Features
Selection
Multiple constant pressure water supply frequency inverter:Specifications

Item

Technical Index

Specification

Input

input voltage

1AC 220~240V±15%
1AC 220~240V±15%
3AC 380~460V±15%

Input frequency

50 / 60Hz±5%

Output

Output voltage

0~rated input voltage

Output frequency

0~100Hz

Control Features

Control mode

Manual control
Auto control

Operation command mode

Keypad control
Terminal control
Serial communication control (Modbus)

Overload capacity

150% / 60s, 180% / 10s, 200% / 1s.

PID control

Built-in PID control standardly.

Automatic voltage regulation

Keep output voltage constant automatically when input voltage fluctuating

Main

Protection

Functions

Pressure

Upper limit protection

Lower limit protection

Lack of water

Lack of water protection

Motor

Motor overload protection

Rust-proof & freeze-proof

Rust-proof and freeze-proof protection

Pipeline

Pipeline broken protection

Applications

Water supply system

Deep well pump, submersible pump, sewerage pump, pipeline pump, booster pump, multistage pump, centrifugal pump etc.

Special for living water supply system, hot water supply system, high-rise water supply system, fire fighting water supply system, sewer system and irrigation system etc.

Human machine interface

LED display

Pressure setting, system pressure, output frequency, output voltage, output current, etc.

Two lines display.

Environment

Ambient temperature

-10~50°C, without direct sunshine.

Humidity

90%RH or less (non-condensing).

Altitude

≤1000M: output rated power, >1000M: output derated

Storage temperature

-20~60°C

Multiple constant pressure water supply frequency inverter:Features

 
Easy installation
1

Mounted on the wall or in the control cabinet.
2

Modbus communication, very less wiring connection.
3

Multiple pumps system, only one pressure sensor is necessary.
 
Easy operation
1

Few parameters setting.
2

Press-to-go, fully automatic running.
3

Pressure setting can be changed easily.
 
Smart master-slave control
1

Master inverter and slave inverter can be operated alternately, prolong the pump's life time.
2

Pumps are switched smoothly, no pressure vibration.
3

Pumps are increased / decreased automatically, alwasy keep constant pressure.



一 1.Schematic diagram of constant pressure water supply for the main and auxiliary three pumps

一 2. Wiring diagram of three water pump main and auxiliary constant pressure water supply inverter

Multiple constant pressure water supply frequency inverter:Selection

Inverter Model Motor Rated Input Current (A) Rated Output Current (A)
kW HP
1AC 220V±15%
KD386-00040S2 0.4 0.5 5.4 2.3
KD386-00075S2 0.75 1 8.2 4
KD386-00150S2 1.5 2 14 7
KD386-00220S2 2.2 3 24 9.6
KD386-00400S2 4 5 30 17
KD386-00550S2 5.5 7.5 45 25
3AC 220V±15%
KD386-00040T2 0.4 0.5 3.4 2.3
KD386-00075T2 0.75 1 5 4
KD386-00150T2 1.5 2 9.5 7
KD386-00220T2 2.2 3 11 9.6
KD386-00400T2 4 5 20.5 17
KD386-00550T2 5.5 7.5 27 25
KD386-00750T2 7.5 10 35 32
KD386-01100T2 11 15 46.5 45
KD386-01500T2 15 20 62.5 60
KD386-01850T2 18.5 25 76 75
KD386-02200T2 22 30 92 90
KD386-03000T2 30 40 113 110
KD386-03700T2 37 50 157 152
KD386-04500T2 45 60 180 176
KD386-05500T2 55 75 214 210
KD386-07500T2 75 100 310 304
KD386-09000T2 90 125 365 350
KD386-11000T2 110 150 430 426
KD386-13200T2 132 175 531 520
KD386-16000T2 160 210 620 585
KD386-18500T2 185 250 665 650
KD386-20000T2 200 260 785 725
KD386-22000T2 220 300 880 820
KD386-25000T2 250 330 960 900
KD386-28000T2 280 370 1050 1000
KD386-31500T2 315 420 1130 1110
3AC 380V±15%
KD386-00075T4 0.75 1 3.4 2.8
KD386-00150T4 1.5 2 5 4.4
KD386-00220T4 2.2 3 6.5 5.8
KD386-00400T4 4 5 11 10
KD386-00550T4 5.5 7.5 14.6 13
KD386-00750T4 7.5 10 20.5 17
KD386-01100T4 11 15 26 25
KD386-01500T4 15 20 35 32
KD386-01850T4 18.5 25 38.5 37
KD386-02200T4 22 30 46.5 45
KD386-03000T4 30 40 62 60
KD386-03700T4 37 50 76 75
KD386-04500T4 45 60 92 90
KD386-05500T4 55 75 113 110
KD386-07500T4 75 100 157 152
KD386-09000T4 90 125 180 176
KD386-11000T4 110 150 214 210
KD386-13200T4 132 175 260 253
KD386-16000T4 160 210 310 304
KD386-18500T4 185 250 365 350
KD386-20000T4 200 260 385 380
KD386-22000T4 220 300 430 426
KD386-25000T4 250 330 485 465
KD386-28000T4 280 370 531 520
KD386-31500T4 315 420 620 585
KD386-35500T4 350 470 665 650
KD386-40000T4 400 530 785 725
KD386-45000T4 450 600 880 820
KD386-50000T4 500 660 960 900
KD386-56000T4 560 750 1050 1000
KD386-63000T4 630 840 1130 1100