The use of submersible pump taboo

Submersible pump is a pump body and motor to connect each other, and together into liquid under the operation of pump products. In the process of using this product needs to be kept in mind some key, specific as follows: one, avoid is not grounding submersible pump adopt maintenance is a national mandatory standard requirements. As long as adopt maintenance ground, to ensure the personal safety of use. If there is no maintenance earthing, once the casing leakage, constitute the basis of the submersible pump outlet water and pumping water charged, endanger human and animal safety, waste a lot of electricity. If the submersible pump of the metal shell and fit the national standard of grounding body ( Grounding resistance is not greater than 4 Ω) Grounding connection, when submersible pump casing leakage, electricity flows through the metal casing pump, grounding line maintenance, grounding system, the earth, ground wire and power transformer homework form a closed loop, when leakage through the large, especially in front of the body contact, can make the maintenance of submersible pump device ( Fuse fuse or breaker tripping) , block the leakage of the submersible pump power supply. Second, avoid is not device leakage apparatus maintenance submersible water pump operation in the water, easy to leakage form electrical energy loss and even cause electric shock. If equipped with leakage apparatus maintenance, as long as the submersible pump leakage value beyond leakage action of maintaining current value ( It is generally not exceed 30 ma) , leakage maintenance device will block the power of the submersible pump. WQ submersible stationary 3, avoid abnormal voltage on the voltage too high and too low will make submersible water pump temperature rise too high, shorten use life and even burned submersible pump. Country due to the low voltage power lines is longer, the end of the line voltage is too low, between high voltage is often the case. Therefore, in the process of use of submersible pump, the operator must survey the power voltage at any time, if below 10%, below the additional voltage higher than the additional voltage more than 10%, or current is greater than 20% of the submersible pump extra current, should immediately stop, and to avoid abnormal voltage boot. Four, avoid motor rotation now there are many types of submersible pump is the opposite direction can water turn and turn, but when rotary water yield and large current, back after a long time will damage motor windings. Therefore, should be taken before submersible water pump into the water to connect power to check the direction of rotation is correct. If the three phase reversal submersible pump impeller, should immediately stop, swap any two phase in the three-phase conductor in the cable connection.
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