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How to properly using the Aluminum Electrolytic Capacitor in end-place or circuits boards ?

How to properly using the Aluminum Electrolytic Capacitor in end-place or circuits boards ?

2019-06-25

Aluminum electrolytic capacitors  may cause explosion,fire,or other serious hazard if used outside the specified operating conditions. Please familiarize yourself with the instructions below before using these capacitors.

Item

Instructions

Operating temperature, ripple current

1.

Check the operating and installation environment  and use     the capacitor within the range of the rated performance specified in    the catalog or specifications.

2.

Maintain operating temperature and ripple current within the specified    ranges. Base your choice of capacitors on the maximum load conditions.A    capacitor will overheat under excessive current,potentially resulting in    short circuit, fire, or other major failure.

3.

A    capacitor also generates the self heating.Please bear in mind that the    capacitor heats up the interior of the equipment,and take appropriate    precautions.Operate the unit under normal conditions and check the temperature    of the area surrounding the capacitor.

4.

The    permissible ripple current declines with the rise in ambient temperature (the    temperature of the capacitor's surroundings). Consider the permissible ripple    current at the maximum predictable ambient temperature.

5.

Electric characteristics change as frequencies change. Check frequency    changes in order to choose the right capacitor. Special attention needs to be    given to the self heating and short life time both low and high    frequency,when equivalent series resistance and inductance change.

Applied voltage and other operating conditions

1.

In    general,capacitors have polarity.Applying reverse voltage or AC voltage to a    capacitor may activate the vent or cause a short circuit, fire or other major    failure. Use a special AC capacitor for AC voltage.

2.

Use    a bipolar capacitor for circuits whose polarity reverses. However, as in any    other case, do not use a bipolar capacitor in an AC circuit.

3.

Do    not apply voltage in excess of the rated voltage. When an AC voltage is    superimposed on DC voltage. prevent the peak value from exceeding the rated    voltage. Excessive voltage may cause a short circuit, fire, or other major    failure.

4.

Specifications    on surge voltage have restricted conditions and therefore do not guarantee    long hours of operation.Voltage should never exceed the rated voltage of the    capacitor. even for brief periods. Choose your capacitor accordingly.

5.

When    connecting more than one capacitor in parallel,give proper consideration to    the resistance of the wiring.Establish the connections so that the wiring    resistance will be equal at every capacitor.

6.

When    connecting more than one capacitor in series, all must be of identical    rating, then the balancing     resistors  connected  in parallel. At that time, design the    circuit so that equal voltage levels are applied to all the capacitors.    Ascertain that the voltage applied to each individual capacitor does not    exceed its rated voltage.

7.

Take    into account the service life of the equipment in the use of the capacitor.    Use of the capacitor beyond its service life risks such failures as safety    vent activation or short circuit. Replace as necessary at regular inspection.

8.

Do    not use a capacitor for a circuit that is quickly charged and discharged repeatedly.    Use a dedicated capacitor for an application like a welding unit or photo    flash charging/discharging.  Consult us    for selecting  the proper capacitor,  since the control circuits of certain    rotation equipment, like servo motors, charge and discharge repeatedly.

9.

Even    slow charging/discharging can shorten the service life of a capacitor,    resulting in premature failure, where there are marked changes in voltage    changes. Check the installation in your equipment carefully and consult us.

10. 

General    purpose capacitors should not be used for a circuit involving rapid charge    and discharge or an A.C. circuit. Capacitors specially made for such    applications should be used.
     →Check    the self heating of the capacitor used in such a circuit in addition to the    types and levels to be imposed to the capacitor of the rapid    charge/discharge, rush current and voltage.

Before installation

1.

Check    the specifications of the capacitors, and install them within the prescribed    specifications.

2.

Do    not reverse the polarity. Do not use a capacitor where reverse voltage is    applied, even if it appears problem-free. Not taking these precautions could    lead to a major failure.

3.

Dropping    or otherwise impacting a capacitor may result in a decline in its electric    performance, causing a failure. Do not use any capacitor whose packaging has    a noticeable abnormality on delivery.

4.

Do    not distort the shape of the capacitor, which may lead the major failures    such as liquid leakage or short circuit.

5.

Do    not reuse a capacitor that has previously been installed on a machine and    energized. No capacitor can be reused ( with the exception
     of    removal for measuring electrical performance during periodic checkups).


Shenmao:The Foremost Leading manufacturer of Aluminum Electrolytic Capacitor over 49 years!Shenmao:The Foremost Leading manufacturer of Aluminum Electrolytic Capacitor over 49 years!

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