Q: What is EMI? What is the difference between EMS and EMC?
Answer: There are many English abbreviations in the field of electrical interference. The EMI (Electro Magne TIc Interference) literary translation here is electromagnetic interference. This is a compound word, we should consider "electromagnetic" and "interference" separately.
The so-called "interference" refers to the two layers of meaning that the performance of the device is reduced after interference and the interference source that interferes with the device. The first layer means that lightning causes the radio to produce noise. When the motorcycle is driving nearby, the TV screen appears snowflake, pick up the phone and hear the radio sound, etc. These can be referred to as "BC I", "TV I" and "Tel I". , these abbreviations have the same "I" (interference) (BC: broadcast)
So which part of EMI is the EMI standard and EMI detection? Of course, the second layer of meaning, the source of interference, also includes the electromagnetic energy before being disturbed.
Followed by "electromagnetic." If the charge is stationary, it is called static electricity. When different potentials move in unison, an electrostatic discharge occurs, a current is generated, and a magnetic field is generated around the current. Electromagnetic waves are generated if the direction and magnitude of the current continue to change.
Electricity exists in various states, and we collectively refer to all of these states as electromagnetic. Therefore, EMI standards and EMI testing are to determine the state of the electricity being processed, to determine how to detect, and how to evaluate.
What is the difference between EMS and EMC?
EMS (Electro MagneTIc SuscepTIbility) literal translation is "electromagnetic sensitivity." It is intended to mean the ease with which performance is degraded due to electromagnetic energy. To be easy to understand, we like to compare electronic devices to humans, and compare electromagnetic energy to a cold virus. The sensitivity is whether it is susceptible to a cold. If it is not easy to catch a cold, it means that the immunity is strong, that is, the English word Immunity, that is, strong anti-electromagnetic interference.
EMC (Electro Magne TIc Compatibility) literal translation is "electromagnetic compatibility." It means that the electromagnetic energy generated by the equipment does not interfere with other equipment or the electromagnetic energy of other equipment.
The term EMC has its very broad meaning. As blind people touch, you feel very different from reality. In particular, electromagnetic phenomena that are contrary to the design intent should be considered as EMC problems.
Electromagnetic energy detection, anti-electromagnetic interference test, statistical processing of test results, electromagnetic energy radiation suppression technology, natural electromagnetic phenomena such as lightning and geomagnetism, influence of electric field magnetic field on human body, international standard of electric field strength, transmission path of electromagnetic energy, Relevant standards and restrictions are included in EMC.
Q: There have been a lot of things with the term interference recently. What is interference?
A: The concept of “interference†has been used more and more recently, and it corresponds to what must exist. Anything that is not desirable can be called “interferenceâ€.
Specific to "electromagnetic interference", it can be divided according to the seven categories listed below:
According to the source of the division
According to the propagation path
According to the cause of radiation interference
According to the working principle of different devices
Divided by frequency of occurrence
Divided by frequency range
Different AC power supplies
The ways of interference propagation are “conducted interference†transmitted through power lines, signal lines, ground lines, earth, etc., and “space interference†directly transmitted through space.
Power Meter is a monitoring and testing instrument which determines the power consumption of a connected appliance and the cost of the electricity consumed.
Built-in 3.6V rechargeable Batteries ( . The purpose of the batteries is to store the total electricity and memory setting
Resetting
If an abnormal display appears or the buttons produce no response, the instrument must be reset. To do this,
press the RESET button.
Display Mode
Entire LCD can be displayed for about 1 minute and then it automatically gets into Model. To transfer from
one mode to the other, press the FUNCTION button.
Mode 1: Time/Watt/Cost Display Display duration(how long) this device connect to power source.LCD on first line shows 0:00 with first two figures mean minutes(2 figures will occur while occur at 10 min) and the rest shows seconds. After 60mins, it displays 0:00 again with first two numbers meas hour(2 figures will occur at 10hours)and the rest shows minutes. The rest can be done in the same manner which means after 24 hours, it will re-caculate. LCD on second line displays current power which ranges in 0.0W 〜 9999W. LCD on third line displays the current electricity costs which ranges in O.Ocost 〜 9999cost. It will keep on O.OOcost before setting rate without other figures.
Mode 2: Time/Cumulative electrical quantity Display Display duration(how long) this device connect to power source.
LCD on first line shows 0:00 with first two figures mean minutes(2 figures will occur while occur at 10 min) and the rest shows seconds. After 60mins, it displays 0:00 again with first two numbers meas hour(2 figures will occur at 10hours)and the rest shows minutes. The rest can be done in the same manner which
means after 24 hours, it will re-caculate. LCD on second line displays current cumulative electrical quantity which ranges in 0.000KWH 〜 9999KWH without other figures. LCD on third line displays"DAY"- "1 'Will be showed on numerical part(the other three figures will be showed at carry) which means it has cumulated electrical quantity for 24hours(one day). The rest can be done in the same manner untill the maximal cumulative time of 9999 days.
Mode 3: TimeA^bltage/Frequency Display LCD on first line displays the same as Mode 1 dones. LCD on second line displays current voltage supply (v) which ranges in 0.0V 〜 9999V .LCD on third line displays current frequency (HZ) which ranges in 0.0HZ 〜 9999Hz without other figures.
Mode 4: Time/Current/Power Factor Display LCD on first line displays the same as Mode 1 dones.LCD on second line displays load current which ranges in 0.0000A 〜 9999A. LCD on third line displays current power factor which ranges in 0.00PF 〜 LOOPF without other figures.
Mode 5:Time/Minimum Power Display LCD on first line displays the same as Mode 1 dones. LCD on
second line displays the minimum power which ranges in 0.0W 〜 9999W. LCD on third line displays character of "Lo" without other figures.
Mode 6: Time/Maximal Power Display LCD on first line displays the same as Mode 1 dones. LCD on second line displays the maximal power which ranges in 0.0W 〜 9999W. LCD on third line displays character of "Hi" without other figures.
Mode 7: Time/Price Display LCD on first line displays the same as Mode 1 dones. LCD on third line displays the cost which ranges in O.OOCOST/KWH 〜 99.99COST/KWH without other figures.
Overload Display: When the power socket connects the load over 3680W, LCD on second line displays the''OVERLOAD[ with booming noise to warn the users, (selectable choice)
Supplemental informations:
1: Except [OVERLOAD[ interface, LCD on first line display time in repitition within 24hours.
2: LCD on first line, second line or third line described in this intruction take section according to two black lines on LCD screen. Here it added for clarified purpose.
3. Mode 7 will directly occur while press down button "cost".
4. [UP"&"Down" are in no function under un-setting mode.
Setting Mode
1. Electricity price setting
After keeping COST button pressed lasting more than 3 seconds(LCD on third line display system defaults price, eg O.OOCOST/KWH ),the rendered content begins moving up and down which means that the device
has entered the setting mode. After that, press FUNCTION for swithing , then press "UP"and "DOWN" button again to set value which ranges in OO.OOCOST/KWH 〜 99.99COST/KWH. After setting all above, press COST to return to Mode7 or it will automatically return to Mode7 without any pressing after setting with data storage.
Power meter socket, Energy meter socket, Energy meter cost socket, Power meter cost socket, Energy power meter socket
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