Submersible pump precautions

<

Dadonghai Pump Technical Support: Notice for Submersible Pumps
1, install the leakage protector
Leakage protector is also called life-saving device, and its role can be understood from the word "life-saving device." Because the submersible pump works underwater, it is easy to cause electrical loss due to electrical leakage and even cause electrical shock. If the leakage protector is installed, as long as the leakage value of the submersible pump exceeds the operating current value of the leakage protector (generally no more than 30 mA), the leakage protector will cut off the power of the submersible pump to avoid power leakage and ensure safety.
2, abnormal power supply voltage
In rural areas, due to the relatively long low-voltage power supply lines, the voltage at the end of the line is often too low. When the phase voltage is lower than 198 volts and the line voltage is lower than 342 volts, the speed of the submersible pump motor decreases. When the rated speed is less than 70% of the rated speed, the starting centrifugal switch will close, causing the starting winding to be energized for a long time and generate heat or burn out. Windings and capacitors. Conversely, excessive voltage causes the motor to overheat and burn out the winding. Therefore, during the operation of the submersible pump, the operator must observe the power supply voltage at any time. If it is less than 10% of the rated voltage and more than 10% of the rated voltage, the motor should be stopped to find out the cause and remove the fault.
3, avoid frequent switching
Do not switch the submersible pump frequently. This is because the electric pump will generate back flow when it stops. If it is turned on immediately, the motor load will start, causing the starting current to be too large and the winding to burn out. Due to the large current at start-up, frequent start-up can also damage the submersible pump motor windings.
4, let the submersible pump long-term overload work
To avoid long-term over-loading of submersible pumps, do not pump water with high sediment content and observe at any time whether the current value is as specified on the nameplate. If excessive current is found, check the shutdown. In addition, the electric pump dehydration operation time should not be too long, so as not to make the motor overheated and burned.

Whole set for Electro-magnet: Electro-magnet chuck, rectifier, cable drum jigger, cable connector, wireless remote control.

Complete close structure: use fully sealed structure, high humidity proof.

Great suction, low energy consumption: optimal design by the computer ,seasonably structured, light weight, great suction, low energy consumption.

Long service life: magnet exciting coil by the special craft processing, improving the electrical performance and mechanical property. Thermal rating of Insulation material reach C grade.

Energy efficiency: usually use constant voltage, also choose strong excitation control (DC-290V/220V) and constant current power. It can improve lifting force, save energy and improve economic performance.

Easy to install, operate and maintain

Crane Electromagnet is a common Lifting Equipment for crane.

Electromagnet

Details

Three types for option:

1. Normal temperature type (DC-220V TD-60%)

2. High frequency type (DC-220V TD-75%)

3. High temperature type (DC-220V TD-60)     

Model

Diameter

(mm)

Current

(A)

Power (kW)

Lifting capacity (cold/hot state) (kgs)

Steel ball

Steel ingot

Steel scrap

MW5-70L/1

700

15

3.3

2500

380/200

120/100

MW5-80L/1

800

18

3.96

3000

480/250

150/130

MW5-90L/1

900

26.6

5.85

4500

600/400

250/200

MW5-110L/1

1100

35

7.7

6500

1000/800

450/400

MW5-120L/1

1200

45.5

10

7500

1300/1000

600/500

MW5-130L/1

1300

54

11.9

8500

1400/1100

700/600

MW5-150L/1

1500

71.2

15.6

11000

1900/1500

1100/900

MW5-165L/1

1650

75

16.5

12500

2300/1800

1300/1100

MW5-180L/1

1800

102.4

22.5

14500

2750/2100

1600/1350

MW5-210L/1

2100

129

28.4

21000

3500/2800

2200/1850

MW5-240L/1

2400

154

33.9

26000

4800/3800

2850/2250

Application

Electromagnet Application


Crane Electromagnet

Crane Electromagnet,Scrap Yard Crane Electromagnet,Electromagnet Lifter,2 Ton Lifting Magnet

Jiangxi Mide Industrial Co., Ltd. , https://www.midecrane.com