2015年1月29日星期四

Cncelegroup Saturation characteristics of the core material to use emergent output voltage stable.

Advantages: reliable, overload, output short circuit protection automatically, simple mcb circuit breaker structure, large voltage range anti-interference ability.
Disadvantages: Weight big, bulky, expensive, noisy, core temperature rise, the operating frequency of the input power requirement is high.
Applications: computer-related products, medical monitoring systems, process control systems, automatic test equipment, radio and television equipment, telecommunications equipment, Power Transformer automatic plug-in machines, production lines, printing equipment, plastic injection equipment, automatic teller machines, SMT equipment, research and testing.
Magnetic amplification exchange regulator basic structure:
By changing the series in the primary circuit of the magnetoresistive magnetic amplification autotransformers to stabilize the output voltage of the transformer.
Advantages: High voltage accuracy, fast response time.
Disadvantages: heavy weight, large volume, high price.
Applications: sophisticated electronic Voltage stabilizer equipment, medical equipment, computer rooms, laboratories, product aging and testing.

2015年1月26日星期一

Circuit breaker Fault performance, cause analysis, summarized excluded

Failure Analysis
Boot no output, no voltage indication, or no start
⒈ overvoltage or undervoltage Circuit breaker protection of the (internal regulator output voltage adjustable potentiometer)
⒉ wrong phase and lack of protection of the (three-phase exchange any two phases)
⒊ main control board is bad (replace)
⒋ output AC is bad (replace)
The output voltage is not normal
⒈ same tune regulator (replace sub-tone regulator)
⒉ over the regulator's own voltage range (to replace a wide range of regulator)
⒊ travel limit switch is bad (replace)
⒋ phase circuit board is mcb circuit breaker bad (replace)
⒌ servo motor burned (replacement)

2015年1月23日星期五

electric transformer, Circuit breaker Unregulated

⒈ over the regulator's own voltage range (to replace a wide range of regulator)
⒉ travel limit switch is bad (replace)
⒊ board is bad Circuit breaker (replace)
⒋ servo motor burned (replacement)
Work trip for no reason
⒈ small total gate capacity selection (replacing the appropriate capacity air switch)
⒉ air switch is bad (electric transformer,)
⒊ momentary surge voltage is too high (to replace non-contact high-precision voltage regulator)
Regulators Internal buzzing sounds great
⒈ overload load up (after reduction connected equipment)
⒉ internal debris inside Electric transformer (to remove debris)
Regulators Internal loud creak
⒈ voltage instability (normal)
⒉ Brush surface grime (after removing dirt outage calls)
Regulators can not run automatically
⒈ automatic toggle switch is not turned on (on)
⒉ circuit board failure (electric transformer,)
Press the panel no boost or buck buck
(Non-power regulator is no such function)
⒈ servo motor burned (replacement)
⒉ travel limit switch is bad (replace)
⒊ circuit board burned (replacement)
⒋ manual, automatic knob is not open to the manual (open to the manual)
Tips: If the regulator fails, can not be mcb circuit breaker ruled out when they can not stop when the power supply to the back-end equipment; please contact a professional company.

2015年1月20日星期二

Circuit breaker Regulators general maintenance inspection items are as follows:

⒈ regulator if there is design, installation defects;
⒉ check regulator load current, operating Inverter Power Supply voltage is normal;
⒊ check for leaks oil regulator phenomenon, oil level, oil color, temperature not exceeding the allowable value, ONAN top oil regulator is generally below 85 ℃, strong oil-cooled and water-cooled stable and strong oil pressure should be at 75 ℃ or less;
Check the regulator ⒋ high and low voltage ceramic casing is clean, circuit breaker, damage and flashover traces of discharge;
Terminals ⒌ check whether the regulator is bad, overheating;
Check whether ⒍ normal regulator operation sound; have a uniform electromagnetic buzzing sound during normal operation, such as the internal discharge crackling sound may be breakdown of the winding insulation, such as electromagnetic acoustic uneven, probably iron core through the core bolt or nut loose;
Check the regulator ⒎ hygroscopic agent reaches saturation;
⒏ Check regulator is normal oil sectional door, sectional Air circuit breaker door to the gas and the radiator relay sectional door is in the open state;
⒐ check regulator diaphragm tube explosion is complete, whether carved glass diaphragm has "ten";
⒑ check regulator cooling device is operating properly, the heat pipe temperature is uniform, whether the pipe clogging;
Check the chassis ground ⒒ regulator is good;
Whether filled with gas relay ⒓ check oil, no gas is present;
⒔ outdoor regulators focus on checking the foundation is good, with or without foundation sinking of change sets bar, checking whether the firm poles, wood, stem root rot whether the phenomenon.
⒕ indoor regulator, focus on checking doors and mcb circuit breaker windows are in good condition, check the wire gauze shutters are complete;
⒖ other items should be checked.

2015年1月17日星期六

electric transformer Electricity Related difference

Electricity is generated a magnetic field, the magnetic field also can be converted into electricity. Put a pass on the AC coil, it will generate an alternating magnetic field electric transformer, then the alternating power transformers magnetic field through the other coil, the coil will induce a voltage to another, it is the principle of the transformer, the transformer and the number two a coil turns relating; simply put, is the use of magnetic coupling of the transformer principle, all the former secondary winding (coil) composition, size, and is proportional to the voltage across the coil turns of the coil, so that the number of turns of the primary and secondary windings the ratio determines the transformer turns ratio this. It is clear that there is no role of regulator transformers, because the secondary voltage with the primary voltage changes.
Regulator principle is the use of negative feedback, so to speak, will be open to the half faucet tap, faucet mounted at the exit of a sensor that can detect how much water, if the water Electric transformer volume electric transformer, and will automatically will tap off a small point, if a small amount of water, it will automatically open a large number of taps, so always keep a constant amount of water. Regulators principle generally the case, there can be detected a change in output voltage of the circuit (the error amplifier inverting input voltage dividing resistors sampling circuit, this circuit can be reduced to only one integrated chip) in the voltage regulator, when the output voltage changing when the output voltage change is detected by the chip circuit provides feedback to the servo motors, servo motors driven by another location jib automatically adjust the brush, so that the output voltage stability, which is the easiest regulator.
In summary said, there is no regulation of the role of the transformer, but the use of negative feedback can be designed with the role of regulator transformer, this is no problem, but in Inverter Power Supply general the transformer is not the case. Transformer in a certain range of output voltage change is small, said regulator is not a concept.

2015年1月14日星期三

Cncelegroup power circuit breaker

All regulators, have taken advantage of the same technology to achieve stable output voltage. Output voltage dividing resistors connected to the amplifier inverting input Switchgear & Substation terminal of the sampling error, the error amplifier non-inverting input connected to a reference voltage. Always try to force the error amplifier input equal at both ends. To this end, it provides the load current to ensure that the output voltage stability (ie negative feedback).
Regulators pictures regulator and UPS are different concepts, but many of my friends are always wrong to think the regulator is UPS, essentially there is a difference; UPS into line and back-up, general computer equipped belong back-up, and it belongs to an emergency power supply; back-up is an electronic switching regulator with the regulator part, can be used as the regulator Used, but regulators are not effective; regulator: it is against voltage instability designed primarily as a back-end equipment protection purposes, for equipment protection function better. electric energy meter Generally large UPS systems must also be equipped with a bypass regulator that LW-PLG regulator. The above describes the concept of the regulator, UPS is here to talk about what?
UPS in Chinese means "uninterruptible power supply" is the English "Uninterruptible Power Supply" acronym, it can protect the computer system after a power outage to continue working for some time to allow the user to save an emergency, so you do not work due to power failure or loss of influence data. It is in the computer systems and network applications, mainly plays two roles: one for emergency use, to prevent a sudden power failure affecting the normal operation, causing damage to a computer; the second is to eliminate surges on mains, instant high voltage, instantaneous low voltage, wire noise and frequency Air circuit breaker offset and other "power pollution", to improve power quality, providing high-quality power for computer systems.

2015年1月11日星期日

Circuit breaker inverter

In principle, the basic application, UPS is a storage device containing, as the main component in the inverter, power protection devices output voltage frequency stabilization. Voltage stabilizer Rectifier consists of several parts, batteries, inverter and static switches and other components.
1) rectifier: rectifier is a rectifier, simply means that the AC (AC) is converted to direct current (DC) devices. It has two main functions: first, the alternating current (AC) into direct current circuit breaker, supplied to the load by filtering, or the supply of the inverter; second, to provide a charging voltage to the secondary battery. Therefore, it is also to play a role in the charger;
2) Battery: UPS battery is used as a storage means for electrical energy, which consists of several cells connected in series, which determines the size of the capacity sustain discharge (supply) time. Its main function is: when the mains is normal, the electrical energy is converted into chemical energy stored in the battery inside. When the mains fails, the chemical energy into electrical energy supplied to the inverter or the load;
3) Inverter: Popular speaking, the inverter is a direct current (DC) is converted to alternating current (AC) of the device. It consists of an inverter bridge, control logic and filter circuit;
4) Static Switches: static switch, also known as static switch, power transformers which is a non-contact switch, is a two SCR AC switch (SCR) reverse parallel composition, the closing and opening by logic controller control. Conversion type and model is divided into two. Conversion type switch is mainly used for two-way power supply system, its role is to automatically switch from the road all the way to the other; and models switch is mainly used in parallel with the mains inverter or multiple inverters.
Regulator is stable voltage by beating the relay. When the grid voltage slight fluctuations, or within a certain range of open or close other appliances will cause the power regulator circuit is activated automatically corrected, frequently beating the relay. Each relay beat shift, will make a brief power supply interruption occurs. Although this does not affect the normal use interrupt other household appliances, but highly sensitive computer literacy interference inside is great, every regulator beating shift, like an instantaneous pulse input in the computer, the computer is likely Switchgear & Substation to cause an error signals serious cases cause damage to the hard disk or floppy drive stuck.

2015年1月8日星期四

electric transformer Authenticate

General medical device class stage power needs through FCC-B, electric transformer, EN55011550226120461000 such as electromagnetic compatibility and immunity Air circuit breaker to electromagnetic interference testing. Select the completion of these tests not only within the right equipment to ensure the electromagnetic influence other electronic components, and medical equipment can reduce development cycles and time to market prior to the subjects.
Size and high power density
In addition to medical and multifunction devices, high-precision detection and adjustment direction, the smaller size and portability is a development direction. This requires medical equipment supply must have a higher power output in a smaller board area conditions.
Special Applications
Centralized power supply products on the market mcb circuit breaker are mostly standard output, even though there are some products can be by way of an external power supply circuit, output adjustment, the adjustment range is not large, but stability is also problematic. If you hit a low voltage, high current or high voltage DC on how to handle the situation, of course, can be used to customize the way, but the price is quite high, the customer can accept.
Price
Today the price of medical equipment due to fierce competition, has gradually transparent, especially some small home medical equipment, prices have been very popular and mass. Switchgear & Substation So this requires an important part of medical devices - power, there must be price competitive.