Use aluminum electrolytic capacitor considerations

If the aluminum electrolytic capacitor is used under non-prescribed conditions, it can cause major malfunctions such as explosion and fire. Please confirm the following precautions before use. Design Use Temperature and Ripple Current

1. The use temperature and ripple current should be within the specified range. Capacitors, such as excessively large currents, can cause abnormal heat, short circuit, fire, and other fatalities.

2. The capacitor itself is a heating element and will cause the temperature inside the machine to rise. Please be careful to confirm the temperature around the capacitor in the normal state of the machine.

3. The ripple current allowed to pass should decrease with increasing ambient temperature (the temperature around the capacitor), and the maximum ambient temperature and frequency of use should be taken into consideration when passing ripple current.

Applied voltage 1. Capacitors have polarity. When reverse voltage or AC voltage is applied, it can cause fatal problems such as fire. 2. Use a bipolar capacitor in the polarity conversion circuit, but this case is not used in the AC circuit. 3. When superimposing the AC component on the DC voltage, the peak value should not exceed the rated voltage, otherwise it may cause fatal major defects such as short-circuit fire. 4. If multiple capacitors are connected in parallel, wire resistance and so on should be considered. 5. Multiple capacitors connected in series are capacitors of the same specification. Connect the voltage equalizing resistors in parallel. The design must consider that the voltage applied to the capacitors is exactly the same. 6. Can not be used to repeat the rapid charge and discharge circuit, welding equipment, such as charge and discharge, capacitor, please design. 7. Even if it is not fast charged and discharged, a large voltage change will lead to a deterioration of the life characteristics, and it is necessary to actually confirm or contact Highly. Use environment When the capacitor is used in water, oil, and other conductive liquids or in a crystalline state, it will cause a malfunction. In addition, if the sealing apron or the explosion-proof valve adheres with oil, the airtightness will be reduced, and the capacitor should not be used in the state of attached liquid. 2. Gases containing halogen compounds such as hydrogen sulfide, nitrous acid, sulfurous acid, and bromine, and hazardous gases such as ammonia should not be placed on or used with capacitors. Once these gases enter the interior of the capacitor, corrosion can occur. Avoid fumigation and insecticide spraying. 3. Do not place and use capacitors with ozone, ultraviolet rays, or radiation. 4. Do not use capacitors in places with large vibration shocks. Installation Pre-installation prerequisites 1. The reverse polarity cannot be reversed. Even if the appearance is not abnormal, this type of capacitor cannot be used. It has been damaged. 2. Do not install brackets or apply external force to the sealing section, as this may cause poor sealing and may cause leakage and rupture of the sleeve. 3. If the capacitor is subjected to a drop or the like, its electrical performance deteriorates, causing a failure and not allowing the capacitor to be impacted. 4. Do not use the assembled capacitors after the assembly is energized, and do not use them except for the capacitor that was removed to test the electrical performance at periodic inspections. Installation method 1. Bolt-type explosion-proof valve (on the cover), please do not face down, because of concerns about the electrolyte, the fixed agent flow from the explosion-proof valve. 2. No wire circuit can be found near the explosion-proof valve. The discharge of the electrolyte when the explosion-proof valve is working may cause accidents such as fire. 3. Do not install heat sinks around the capacitor and on the back of the board (under the capacitor). 4. Do not affect the work of the explosion-proof valve. There should be some space in the upper part of the explosion-proof valve. Capacitor diameter interval φ36 3mm or more φ40 or more and 5 mm or more Bolt type capacitor 1. The terminals of the terminal screws allow the current to be as follows, and also to vibrate large machines. Please discuss separately. 2. The screws that are ordered are used for wire thicknesses up to 2mm and screw lengths longer than 2mm. 3. It is recommended to use φ6 for the M5 washer hole diameter. If the hole diameter is too large, poor contact between the terminal surface and the washer may cause partial heating failure.

custody

1. Keep capacitors in the room, avoid direct sunlight, indoor temperature is 5 to 35, humidity is 75% (25°C), deadline is less than 3 years, capacitor leakage current increases for more than 3 years, please perform voltage processing. 2. The humidity is stored in the same environment as the above environment. 3. Store as much as possible. 4. According to the phenomenon of capacitor recovery, the charge will be generated. If the hand cannot directly contact the capacitor terminal, it will be electrically shocked. Use a resistor (10~100Ω) or the discharge plate to discharge before use. Test run 1. Do not touch the capacitor terminals directly due to the possibility of electric shock. 2. Capacitor terminals must not be short-circuited by electrical conductors. 3. Conductive solutions such as acids and bases cannot be attached to capacitors. 4. Use environment Please confirm the design environment. Check

1. Capacitors on industrial equipment should be inspected periodically. Check item:

(1) Appearance: Obvious abnormality such as pressure valve status, nightfall, etc. (2) Electrical properties: capacity, losses, leakage currents, and items included in the specifications. The electrical performance test is based on a 20°C reference and is placed at 20°C. After the capacitor has reached a certain temperature, it is tested. Can you use please discuss. Periodic inspection, cut off the switch, test after full discharge. 2. Capacitors that have exceeded their useful life must be replaced. Replace them with full replacement. If old capacitors are used together with new capacitors, the ripple current may not be balanced.

In case

1. In the complete use, when a gas is detected, cut off the main power and remove the power plug from the socket. 2. When the explosion-proof valve of the capacitor is in operation, the temperature of more than 100 gas will be ejected. Do not put your face up and do not go near the gas lift. 3. The sprayed gas intrudes into the eyes. Immediately wash it with clean water. 4. The electrolyte is attached to the skin and washed with soap. It must not be absorbed into the mouth. Abandoned occasions 1. Classification of metal swarf is more suitable for the management and formation of industrial waste than the deep-buried thing (electrolyte solution). Please entrust a specialized industrial waste disposal company to consider that the disused product can no longer enter the market. 2. Because it is aluminum, most of it cannot be completely burned. Note the following when burning: If it is sealed and burned, it will cause an explosion and damage to the opening or opening. The outer packaging material (plastic bag) will produce toxic gas at low temperature and burn at high temperature. 3. Deliberately dissecting the capacitor can cause electric shock and other injuries. Others 1. For details, refer to EIAJ RCR-2367, Precautions for Using Fixed Aluminum Non-Solid Electrolytic Capacitors for Electronic Equipment. 2. Please contact us if you do not know.