Hydraulic pipe machine

ac motor Lamination 220v class B/F 

Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. silicon steel stamping 

5. stunning performance 
Withstand voltage test (puncture test) is a test electrical appliances, electrical equipment, electrical equipment, electrical wiring and electrical safety equipment such as one of the main methods of ability to withstand overvoltage. The division of frequency withstand voltage test and two kinds of dc withstand voltage test. Power frequency withstand voltage test the permanent magnet motors for sale test voltage for the participants equipment more than one times to several times the rated voltage, not less than 1000 v. The pressure time: for porcelain and liquid as the main equipment of electric motor low rpm the insulation for 1 minute, for organic solid as the main equipment of the insulation for 5 minutes, for the voltage transformer is three minutes, for oil-immersed power cable for 10 minutes. Dc withstand motor electric voltage test can be passed the test of the different voltage when the value of leakage current and leakage current - voltage characteristic curve drawing. Electrical equipment by the withstand voltage test can find a local insulation defects, be affected with damp be affected with damp and aging.

Squirrel-cage asynchronous motor soft starter application - soft starter start,stop,features

Total pressure for water pump type load,motor starter,water,will be in a very short period of time to full speed in case of pipe bend,high-speed flow impact on the pipe wall,make a big impact,the formation of water hammer effect,can damage piping.If the water pump in front of the line is longer,when sudden stop water pump motor,high speed water flow will impact to the pump impeller,produce very big impact,can make the impeller deformation or damage.Shandong plant no.1,no.2 water pump room,undertake the task motor magnet the seepage discharge of underground powerhouse.Water pump room 1 6 motor rated power is 110 kw,the rated current of 202.2 A;2 water pump room 3 motor rated power is 75 kW,rated current 140 A.In the operation of the pump in the problems are: 1,overhaul of deep well water pump room of no.generator generator set 1,due to stop when the pump water hammer is too big,the original cast iron check valve blowout,now although change slow close check valve,alleviate the water hammer effect,but the water hammer will damage to the motor brake non- return plate.


2 water pump room 2 low pressure pump,water hammer effect makes the pump impeller damage.In April 2005,shandong factory for no.1,no.2 water pump room 9 pump control system is reformed,change from the previous relay control system to the programmable controller to control.Water pump motor for direct starting before modification,and electricalmotor1.blogspot.com now with ABB PST the soft starter.Through to the soft starter motor Settings of various parameters get better starting performance.Booster time: 3 s,starting voltage: 60%,current limiting multiples: 4 ie.Motor starting,the starting voltage 60% Ue,when four times starting current to rated current,output electrical motor voltage stability,until reduced to limit the following current,boosting process will continue,ensure the starting current is always less than 4 times the rated current,as shown in figure 2.Pump shut down,the water hammer effect caused by noise,vibration,often appear non-return valve fracture,short service life of pump pipeline rupture of fault,even the most difficult problem in the water supply system is the damage when the pump stop water hammer,soft starter excellent soft stop function is fundamentally solve this problem.Through to the soft starter Settings of various parameters to make the pump to obtain better braking performance.Decompression time: a t1 t2 = 3 s,end voltage: 60% Ue.

Low voltage circuit breaker DZ15 series and DZ20 series

1) DZ15 series:DZ15 series circuit breaker has obvious quick points in function and electrical

control circuits in mini electric motor operating machinery used in distribution,motor and lighting circuit overload protection and short circuit protection.2) DZ20 series:DZ20 series not only have the ability of fast closing and opening,also equipped with alarm contacts,available for distribution in the electrical control circuit.DZ series annotation type as follows:(1) DZ wholesalemotor.blogspot.com is code breaker,said plastic shell type circuit breaker;(2) design code;(3) the rated breaking capacity code (Y-plain,J-high type,type G-the highest,C-economical);(4) shell level rated current (A);(5) derived code (P-electric operation,L-leakage operation);The number of 6;All landowners trip code (0-no trip,1-thermal trip,2-electromagnetic trip,3-double trip).End attachment code (0-without attachment,2-shunt tripping device,3,undervoltage tripping device,4-auxiliary electric motors price contact shunt tripping device,5-shunt undervoltage tripping device,6-two groups of auxiliary contacts,7-under voltage trip auxiliary contact);Pet-name ruby attachment auxiliary code (0-no alarm gasoline generator contacts,8-there are alarm contacts).

Brushless synchronous generator is how to generate electricity?

Three-phase brushless synchronous generator excitation system are connected by a coaxial communication issue of ac exciter,after rotating rectifier rectifier for direct current (dc), Then sent to the generator exciting winding.Ac exciter is rotating armature type of three-phase medium frequency generator,the diesel generators prices frequency of www.dongfeng-motor.com generator frequency three times Left electricalmotor1.blogspot.com and right sides,which can improve the perkins diesel generator setexcitation response speed.Exciting winding is stationary,controlled by the automatic voltage regulator AVR excitation.Rotating rectifier Have high reliability,using the three-phase half wave bridge rectifier and three-phase full-wave bridge rectifier,firmly fixed on the rotor,with the current measurement And fault indicating device.