2014年11月30日星期日

The installation of the switch and outlet boxes and panel, connection is not in conformity with the requirements


 Stator And Rotor ac induction motor parts 

Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 
3. Material: silicon steel 
1, the phenomenon of electric motors (1), the box embedded too deep, different level; Panels and Water pump wall body between cracks, lac pollution, not flat. (2), box with mortar sundry. (3), phase line of switch and outlet, the zero lamination line, PE line are concatenated phenomenon. (4) the wires, switches, sockets thrum exposed, fixed bolt looseness, box conductor is absence. 2, root cause analysis (1), embedded box without reliable fixation, template expansion mode, installation time coordinates are not accurate. (2), construction personnel is not strong sense of responsibility, the use of electrical safety importance understanding insufficiency, the easier. (3), there is not reasonable to save material. 


Electric Motors 1 HP 3PH
Specifications
1. Shape: squirrel cage
2. CE.ISO CCC 
3. Side Terminal Box 
4. Free Foot Mounting 

5. 100% copper wire 
3, preventive measures (1), in close coordination with small diesel generator set diesel engine the civil engineering professional, accurate reliable fixed box; When embedded box is deep, should be equipped with a box. Installing a panel to horizontal flat vertical, application level calibration level, ensure the installation height of unity. In addition, diesel generator set after install panel to full seams, are not allowed to leave aperture, be clean protection panel. (2), strengthen supervision and management, ensure the phase switch and outlet line, zero line, PE line rotor and stator protection cannot be concatenated, clean up the first container of mortar. (3), fixed size when stripping, guarantee the thread tidy uniform, thread www.facebook.com/guohong.trading after installation not naked; To strong pressure wire at the same time, the single conductor when the insert line hole should be generator set spread into twin, screw tight, tight. (4), switch, socket box wires should have certain allowance, is 100-150 - mm; To resolutely put an end to the unreasonable material greed.

Brushless dc servo motor characteristics


Y2 series high power China ac motor

Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration 
Moment of inertia of small, low starting voltage and no-load current; Contact the reversing system, generator greatly improve the motor speed, maximum speed up to 100 RPM, 100; Brushless servo control in the implementation of the acmotor2.blogspot.com servo motor, squirrel cage induction motor without encoder also can realize single phase induction motor the control of speed, position, torque, etc; ac motors three phase induction motor generator There is 3 phase induction motor no brush wear condition, in addition to high speed, also has a long service life, low noise, diesel generator set no electromagnetic ac motors interference, etc.

DBJ08-20-98 household electric equipment should meet the following standard

 AC motor aluminum 2800 rpm motor fan cover 
Specifications
1. Customised 
2. good quality 
3. Surface treatment: Galvanize 
4. AC motor 
4, appropriate chooses protective type electrical outlet, the configuration should not be less than the following provisions: buy, buy, decorate a BBS, diesel generator property BBS: (1) single bedroom set and www.dongfeng-motor.com single- phase three pole socket two single-phase poles, single-phase three pole air conditioning a socket; (2), double bedroom, living room and master bedroom set and single phase three pole socket three single-phase poles, single-phase three pole air conditioning a socket; Single-phase poles (3) the kitchen set and single phase three pole single phase motor combination electric outlet and single phase three pole with each a switch socket, and three phase induction motor near the platoon lampblack machine highly single-phase three pole a socket; 

CCC CE ROHS UL VDE Certification and 115/120 V AC Voltage 220V&120V induction motor
Specifications
1. Specifications1.3-phase asynchronous motors 
2. IEC standard 
3. OEM 
4. Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54 
(4) the toilet set single-phase poles and single-phase three alternator generator pole a socket, a washing machine of toilet, should add the single phase three pole switch socket, a toilet socket splash proof should be adopted. The above regulations is minimum, almost every family to feel the socket is synchronous generator not enough, want to use temporary line socket board added as a supplement, a socket board up three or four electric equipment is a common ac motor phenomenon, if these are small capacity, electrical equipment such as home computer for four or five socket, it is www.dongfeng- motor.com allowed. If the socket board at the same time, electric kettle, electric heater etc. Large capacity magnetic generator electric equipment is not allowed, because the wire would overload fever.

2014年11月27日星期四

Stepper motor and ac servo motor performance comparison different running performance


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 
Stepper motor control for the open loop control, single phase motor start frequency is too high or too much load step easy appear lost or blocked, stops frequently occur high speed overshoot phenomenon, so as to ensure the control accuracy, should handle the ascending and descending speed acmotor2.blogspot.com problem. Ac servo single squirrel cage induction motor phase motor drive electric water pump system for closed-loop control, the actuator can small synchronous generator diesel engine be three phase induction motor directly to the 3 phase induction motor motor encoder feedback signal sampling, internal position loop and speed loop, ac induction motor general won't electric generator appear step motor lose step or overshoot phenomenon, more reliable control performance.

2014年11月26日星期三

DBJ08-20-98 household electric equipment should meet the following standard


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 
3, as people living standard rise, electric rice fort, microwave oven, air conditioner, electric kettle, electric spot squirrel cage induction motor chung person households, household electricity load is growing rapidly, 1 kw of power load is not enough, so DBJ08-20-94 household electricity load design power of 4 kw, watt-hour meter to choose 5 (20) A. Price increase of residents' income and household electrical appliances, make electric motor parts a home acmotor2.blogspot.com two air conditioners, color TV sets and squirrel cage induction motor computers in the home is not new, has prompted a surge in household electricity load again, therefore DBJ08-20-98 household small diesel engine electricity load design power increased generator to 4-8 kw by 4 kw. The Induction motor high standards had permanent magnet generator been designed by 6 kw, high standards of commercial electric generator housing and more than 130 m2 residence designed by 8 kw, watt-hour meter ac motors are all made of 10 (40) A single-phase watt-hour meter.

2014年11月24日星期一

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.

The inverter no-load current is greater than the load current

 115/120 V AC Voltage and Three-phase Phase small 240v electric motor
Specifications
1.Specifications1.3-phase asynchronous motors 
2.IEC standard 
3.OEM 
4.Voltage:50HZ &60HZ;380V&415V 
5.Protection class: IP54 
A 75 kw micro can WIN - G9 inverter commissioning the strange phenomenon Cause: a cement plant users to send a 75 kw can WIN - G9 frequency converter, the cause of the problem is, in the operation of the fire smoke in the inverter, the inverter downtime. Check, the power input circuit of the machine for three phase half controlled bridge, using the principle of controlled rectifier, on the main loop of the dc energy storage capacitor "soft power" and save the small power inverter commonly used rechargeable contactor. In fact half controlled bridge in this here is equivalent to non-contact soft blunt electricity switch. Inspection found that one of the thyristor module electrical motor 12v 1000w terminals have obvious signs of flashover arc burning, but the measurement is not short circuit. Found in the disassembly easily fixed nut landed, flashover reason seems to be a connecting screw loose, causing poor contact. The module for a combination of a diode and a one-way thyristor. And then check the control panel and inverter main circuit, without exception. The module, more than two phase half controlled bridge as the ac electric motor power input, after power on, with a small power 2.2 kW three-phase motor, feel no problem, switch to the new module after a same model, then to the site for installation.

DONGFENG Brand Two Speed Motor
Specifications
1. DONGFENG Brand Two Speed Motor 
2. 3000RPM-750RPM 
3. Electrical motor 
4. factory price best quality 

5. 100% copper 
 Precaution, first will run to 5 hz frequency, frequency converter load as a fan, motor connector off first, make the motor no-load running. This trial run, got a fright! Frequency at 5 hz, no-load running current 45 a, although feel slightly larger, but consider for a possible repair, or frequency converter for motor winding parameters such as starting curve or torque compensation made adjustment caused by waiting for a reason, without notice. When up to 10 hz inverter panel shows the current and the output current is measured with clip-on table, have reached the 100 a! And the oscillation amplitude of the output current is great, but test the three-phase output voltage, about 70 v, balanced and stable. The motor cable release, electric logging on the inverter output, output frequency 10 hz, the output voltage is 70 v, 20 hz to 150 v, 35 hz to 250 v, after decreasing with frequency, to 50 hz, 400 v. In this process, the measurement of three-phase output voltage balance is very good. The inverter output of V/F curve electricalmotor1.blogspot.com accords with quadratic load torque characteristics. No problem. Output voltage balance and stability, and the output current is too large and the current volatility, obviously for the load caused by abnormal. This is lead to the conclusion of conventional judgment.

Brushless dc motor of the three-phase bridge inverter main circuit of the there are two kinds of control mode

 ac three phase asynchronous electric motor stator 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 
Brushless dc motor of the three-phase bridge inverter main circuit of the control mode has two kinds:. Conduction mode and three three conduction mode. Two way switch tube conduction under the law and of the three-phase winding back emf waveform is shown in figure 2. Two kinds of works, each cycle has 6 kinds of conduction state, every 60. Electrical work status change. . Conduction mode, with only two switch tube at any time and at the same time conduction. Switch tube conduction sequence: VT1, VT2 - > VT2, VT3 - > VT3, VT4 - > VT4, VT5 - > VT5, VT6 - > VT6, VT1. Each switch www.dongfeng-motor.com tube conduction, 120. Electric point of view, there are 60. Electric Angle without conduction time, never happen through fault, this way of work, also known as two-phase conduction star three-phase six ways. 


Y2 series 0.75kW (1HP) AC Motor for Speed Control
Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
Three three conduction mode refers to the three switch tube at any time and at the same time conduction, switch tube conduction order: VT1, VT2, VT3 - > VT2, VT3, VT4 - > VT3, electric fan motor VT4, VT5 - > VT4, VT5, VT6 - > VT5, VT6, VT1 - > VT6, VT1, VT2. Each switch tube conduction, 180. , the conduction time increased, and if one tube conduction and shut off with a delay, through AC synchronous lamination generator short circuit occurs, causing damage to the device. In addition to good use. Conduction way flat part of the square wave air-gap magnetic field, make the output of the motor is large, the electromagnetic torque is greater than three three conduction mode, and torque stability is good.

2014年11月23日星期日

Ac frequency conversion compressor motor

ac three phase asynchronous electric motor stator 
Specifications
1. 20 years manufacturing experience 

2. competitive price,high quality 
Ac frequency conversion compressor motor is general three-phase ac asynchronous motor, dc brushless dc permanent magnet motor is of frequency conversion compressor rotor motor. Three phase motor Frequency conversion power module is also called intelligent power transistor, referred to as "IPM, a thick film integrated encapsulation. This article focuses on the output of the ac frequency conversion air conditioning circuit, there single phase induction motor are three kinds of common frequency conversion power circuit. One kind is to use a separate IPM, as shown in figure 1, IPM 11 terminals, direct welding outside control main edition; A circuit board is made of IPM and frequency conversion circuit integration, the whole circuit in the polyester encapsulation, and control ANP gost motor main board with a communication port control, is unable to repair; One is using IPM and drive circuit or the power supply circuit of frequency conversion power template, IPM has 21 terminal, control element can be seen, can repair, and control main board have signal connection.

The starting current of the machine

 AC Induction Plastic motor fan 
Specifications
1. Customised 
2. good quality 
3. 20 years manufacturing experience 
1, the circuit breaker to choose 3 times of the rated current is correct! Because the starting current is in an instant. Circuit breaker due to inertia too late response! 2, the Angle of operation and starting current ratio, Angle is 1.73 times of stars! Marked on the Single phase motor motor nameplate! The motor starting current why so big? In the next work, meet a problem: a current rating of 12 a submersible pump, starting current biggest reached 227 a, the wholesalemotor.blogspot.com result will be a upstream switch thermomagnetic tripping protection action. Insulation resistance, no problem, we check the motor is started normally (general starting current in 200 when A normal boot), motor running current of 9.2 A. General starting current is about 4 ~ 7 times the rated current, what reason can make the starting current is so large, whether related to pump lobe jamming? Supplementary question. You refers to the phase insulation of the cable? Haven't test, the motor rated voltage is 380 v, no star 3 phase induction motor triangle the circuit, because running current is normal, so wrong into triangular possibility is not big, besides the two motor starting current is the same, at the same time, the possibility of the same fault is small. In addition, permanent magnet motor also want to ask, two motors at the same time, the starting current will stack?

Models such as five p10, what is the meaning of the 5 p20? How to choose?

 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 
5 p10, 10 is behind the accuracy limit factor. 5 p10 said when a current is 10 times of the rated primary current, the winding composite error of plus or minus 5% or less. The significance of accurate electricalmotor1.blogspot.com limit coefficient is within the scope of guarantee error in the plus or minus 5%, multiples of a current must not exceed the rated current, if the primary current is bigger, be about to choose 5 p20, might even choose 5 p30. By the calculation, for example, you need to have protection, short circuit current under the largest operation mode is 4 KA, you choose the current transformer is 150/5, 5 P10, ANP gost motor this means the current transformer in 10 times a * 150 = 150 a = 1.5 KA, can guarantee the winding composite error of plus or minus 5% or less; 

115/120 V AC Voltage and Three-phase Phase small 240v electric motor
Specifications
1.Specifications1.3-phase asynchronous motors 
2.IEC standard 
3.OEM 
4.Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54 
And probably after short circuit, current exceeds 1.5 KA, even achieve 4 KA, then carlt composite error of plus or minus 5% or less, if choose 150/5, 5 P30 current transformer, current transformer in 150 a * 30 times = 4500 a = 4.5 KA, can guarantee winding composite error of plus or minus 5% or less, but only 4 KA maximum short- circuit current, in the full range, can ensure the accuracy of protective current transformer. But in practical application, in order to reduce costs, protect the electric generator does not need too high accuracy, 10 p have been able to meet this need, and when choosing current transformer, also it is not necessary to ensure the maximum short-circuit current, also guarantee the accuracy, generally near the protection setting value can guarantee accuracy.

2014年11月20日星期四

Frequency conversion air conditioning inverter touch panel circuit analysis a


motor Lamination ac motor blender parts 

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

5.stunning performance 
With the popularity of household air conditioner, air conditioning maintenance is becoming a hot spot currently maintenance and repair of earning profit points, the ac electric motor frequency conversion air conditioning is one of the most confusing for maintenance personnel. This article by shinco KFR - 32 gwa/BP frequency conversion air conditioning inverter power template, for "mitsubishi" intelligence "PM20CTM060" analyzes the use of frequency conversion module, the mysteries of the inverter output circuit, increase your confidence in maintenance. Frequency conversion air conditioning is the contemporary advanced frequency conversion technology, frequency conversion air conditioning compressor speed is controlled by CPU according to the working environment and artificial set speed, so as to change the refrigerating capacity, satisfy people to the subjective requirement of the air conditioning. 


OEM industrial electric motors
Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
Frequency conversion acmotor2.blogspot.com air conditioning with a small starting current, to adapt to the wide voltage range and rapid cooling and heating, low temperature heating ability, low noise, stable performance, high reliability, long service life, use comfortable, intelligent control humanization, etc. Frequency conversion circuit with ac frequency conversion and dc frequency conversion in two forms. Two different mainly CPU control inverter output frequency conversion power module of electric motor 12v 500w six power tube conduction of the number, the differences between the phase and pulse width, the direct current (dc) after frequency conversion power module, ac frequency conversion output frequency variable three-phase alternating current, direct current frequency conversion output frequency variable pulsating direct current.

How to visually distinguish between ac and dc motor?

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

5.stunning performance 
Look from the other end of the motor output shaft, a blade is ac motor, can see the commutator (or see 3 phase ac auto parts induction motor commutator and carbon brush dc motor. If told two motors as big power, small volume of ac motor. Generally it is. Don't look at brand dc and ac motor is to judge? Can only see the inside of the motor acmotor2.blogspot.com terminal block wiring board, from Induction motor below strips can tell, is the dc and ac motor.

Current transformer

Cast Iron electrical motor auto spare parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality

3. Delivery Detail:within 10 days after receiving deposit 
Micro current transformer is similar to the transformer is also according single phase motor to the principle of electromagnetic induction to work, is the voltage and the micro current transformer of transformer transformation transform is current. As shown in figure measured current winding N1, called the primary winding (or the original winding, primary winding); Winding N2 measuring instrument, electric motor price known as the secondary winding (or) vice winding and secondary windings. Micro current transformer primary winding current I1 and I2 secondary winding current ratio, than the actual current K. Micro current transformer in the motor electric rated electric current work shed than called current transformer rated current ratio, expressed in Kn. Micro current transformer can be roughly divided into two classes, measuring current transformer and protection current transformer.

2014年11月19日星期三

Switch products of new technology in recent years



Cast Iron electrical motor auto spare parts 

Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality

3. Delivery Detail:within 10 days after receiving deposit 
In the network packets of data flow can be respectively in 2, 3, or 4 layer for identification. Each layer will provide more detailed information about the data flow. In the second layer, each packet of data flow through the motor electric source site and destination MAC address is identified. Within the broadcast domain, layer 2 switching function is limited, this is because the source and destination MAC address is only account for a packet of information in a rough. Layer 2 switches can provide cheap and high bandwidth Internet connection, but they are unable to provide necessary control data flow of the trunk. In the third layer, the data flow through the source and destination network IP address is identified, the ability to control the data flow is limited to the source, ANP gost motor destination address.

gost motor 7.5kw
Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
 If a client is using multiple applications on the same server at the same time, the layer 3 information is not detailed description to each application flow, which makes it impossible to identify the different data streams, more can't one by one for each data flow to implement different control rules. The fourth floor is the transport layer of the OSI model. It is responsible for coordination of network communication between the source and destination system. TCP (transmission control protocol) and UDP (user datagram protocol) are located in the fourth floor. In the fourth layer, each packet contains can be used to identify only send the package information application. Can do this because the TCP and UDP header generator set contains "port", the port can determine each package contains application protocols. The port number of the layer 4 header information and the layer 3 header source - goal combination can realize accurate control of real information. Specific application dialogue can flow control between the client and the server, if the switching router is a full-featured, is all this work can be done at wire speed.

Single-phase transformer economical one



motor Lamination ac motor blender parts 

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

5.stunning performance
Cost of small capacity transformer single-phase power supply system construction, light load area can reduce construction investment. Big load region of single-phase power supply acmotor2.blogspot.com system renovation, must have a larger economic investment. I see, some pilot single-phase transformer in residential quarters, is a large transformer into multiple small transformer, near load installation, shorten the distance, a low pressure trunk, due to the distance of the source to auto parts the load is certain, shortening the distance between motor parts low voltage power supply, is bound to extend the transmission distance, this transformation requires a lot of investment, such as electric motor 12v 500w the original 3 unit 30 families use 160 kVA three-phase transformer.

 high efficiency high power electric motor Y2 motor
Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 
4. low noise and vibtration
switch to three single-phase 50 kVA transformer power supply, table 2 lists two retrofit scheme of materials and the change of loss, obviously increased the construction investment. First, in order to reduce the low voltage main line loss, to introduce the high voltage line load center, increase the high voltage line construction investment. Secondly, using many sets of small capacity transformer no-load loss and load loss, after all is more than the original list of large transformer. Third, the purchase funds are many sets of small capacity transformer is greater than the single purchase money of big capacity transformer. As residential electricity more abroad, several or each use of a single-phase transformer, because countries rich, large amounts of money into the electric power department. Although the investment is bigger, for their overall economical.

The use of voltage transformer should be paid attention to the following matters


 electric motor stator rotor lamination motor parts 
Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. silicon steel stamping 
5.stunning performance 
1) the secondary side of voltage transformer at work can not be short circuit. In normal work, the second primary side current is very ac electric motor small, almost open state, when the secondary side short circuit, the current large impedance is small (secondary side) will be burning equipment. 2) the secondary side of voltage transformer must be grounded at one end, to prevent the primary and secondary side stroke wear, high pressure into the secondary side, endangers one's personal and equipment safety. 3) voltage transformer connection, one should be paid attention to, the polarity of the secondary side terminals. 


OEM industrial electric motors

Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
So as to ensure the accuracy of measurement. 4) the primary and secondary side of voltage transformer are usually should be installed fuse as short circuit protection, primary side should be ANP gost motor installed at the same time isolating switch for safety maintenance. 5) in a circuit and a side PT ark: popular, high screen top small bus voltage of the power supply is provided by the PT ark, PT incase there are both measured PT and PT measurement motor electric (the original is that requires the separation of PT and PT measurement is measurement, the rules and regulations of because measuring the level of transformer is higher than the level of protection of transformer, but now such as no special requirements are not separated, sharing), all small busbar voltage on the top of the screen, for other qualification high voltage measurement, metering, protection with power supply, etc

2014年11月18日星期二

Power frequency withstand voltage test

 Cast Iron electrical motor auto spare parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality
3. Delivery Detail:within 10 days after receiving deposit 
Series resonance overvoltage withstand test device for the power frequency single phase motor withstand voltage test pressure (also called variable frequency series resonance devices or series resonance overvoltage withstand test equipment), is the latest generation, especially suitable electric motor low rpm for large capacity capacitive products (such as generator, cable, etc.) of ac withstand voltage test equipment. This is the product of simple operation, reliable quality, small volume, light weight, very convenient for use. The equipment can be used for 1, 6 kv, 500 kv ac acmotortrading.blogspot.com withstand voltage test of high voltage crosslinked cable 2, 3 generator ac withstand voltage test, ac withstand voltage test of GIS and SF6 switch 4, 6 kv, 500 kv transformer power frequency overvoltage withstand test 5, and other electric power high voltage equipment, such as bus, casing, ac withstand voltage test of transformer. The complete set of equipment is composed of variable frequency power supply, excitation transformer, reactor, voltage divider.

How much is the no-load current of asynchronous motor?

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

5. stunning performance 
Formula is the scene quickly calculate motor no-load current of specific numerical formula, it is a lot of the test data. It is in line AC synchronous generator with "the no-load current of the motor is the 1/3 of its rated current". At the same time it is in line rotor and stator with practice experience: "the no-load current of the motor, shall not exceed the capacity of the kw number can be used for" the principle of (after repair of old, small capacity motor). Formula "capacity by about eighty percent for" refers to the general motor no-load current value is about 0.8 times the number of nominal capacity kw motor. No-load current of medium-sized, 4 or 6 pole motor, is the number of motor capacity kw 0.8 times; New series, large capacity, small number of level 2 of the motor, the no-load current calculation according to the number of 3 phase induction motor "xinda sixty percent less"; To the old, old series, smaller volume, the number of large more than 8 pole motor, the no-load current, calculated on "is a small number of very many kilowatts", namely the no-load current value kw number approximately equal capacity, but is generally less than kilowatts.

The use of current transformer should be paid attention to the following content

 electric motor stator rotor lamination motor parts 
Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. silicon steel stamping 
5. stunning performance
1) current transformer secondary side absolutely not open during use. Used in ac electric motor the process of removing instrument or relay, should be prior to secondary side short circuit. When installation, wiring should be reliable, should not be secondary side installation fuse; 2) secondary side must be grounded at one end. Prevent damage of the primary and secondary side insulation, high voltage into the secondary side, endangers one's personal and equipment safety; 3) when wiring should pay attention to polarity. The polarity of the primary electric motor low rpm and secondary side of current transformer terminals, all show that the polarity with letters. 4) primary side concatenated in line, the secondary side of relay or measuring instrument series. PT, voltage motor electric transformer, English spelling Phase voltage Transformers, is the primary side of high voltage meter or relay in proportion into suitable rated voltage of 100 v conversion equipment. The working principle of electromagnetic voltage transformer and transformer are the same. Also known as a TV or YH (old symbols).

2014年11月17日星期一

Switch control equipment


Cast Iron electrical motor auto spare parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality

3. Delivery Detail:within 10 days after receiving deposit 
In computer network system, the concept of exchange is the improvement of the Shared work patterns. Have we been introduced before the HUB of the HUB is A Shared equipment, the HUB itself does not recognize the destination address, host A to magnet generator host B when the same local area network data transmission, data packets in with the architecture of the HUB is broadcast on the network mode of transmission, by every one terminal via validation data in baotou address information to determine whether to accept. That is to say, in this way of working, the same time can only transmit a set of data frames on the network of communication, if a collision have to try again. This way is Shared network bandwidth. Switches have a very high bandwidth of the back of the bus and internal exchange matrix. 


OEM industrial electric motors
Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
All switch ports are articulated in the back on the bus, the control circuit receives packets, deal with port looks for acmotor2.blogspot.com in memory in order to determine the destination MAC address table (network adapter hardware address) of the NIC (NIC) articulated in which port, through internal exchange matrix quickly to send the packet to the destination port, if there is no destination MAC to broadcast to all ports, exchange the opportunity to "learn" after receiving port in response to the new address, and put it in the internal address table. Using switches can also keep the network "block", through contrast address table, only allows the necessary three phase asynchronous motor network traffic through the switch. Through switches filtering and forwarding, can effectively isolate the broadcast storm, reduce the occurrence of package and the wrong package by mistake, avoid sharing conflict.