Precautions for the use of dc screen batteries_chuanyang electric Co., ltd.
Precautions for the use of DC screen storage batteries
Date of publication: 2019-6-17
1. Operating status The operating status of the battery is different, the degree of battery aging will also be different, the operating mode is single, the battery discharge capacity will be very low, almost no activation, and the capacity will be reduced a lot..If the operation mode is changeable, the operation is frequent and the battery is discharged in the field, the activation frequency of the battery will be higher, and the capacity will remain at a higher level..2. The defects of the battery. Because it is a maintenance-free battery, and the DC system is automatically controlled in the charging mode, it is reliable in operation, so the manufacturer recommends that the battery is activated once a year..However, there are potential problems with the battery, but it has not been revealed in the first two years. After the battery has been running for two years, the battery capacity has begun to drop significantly..3. I don’t understand the performance of the DC screen battery. According to the requirements of the DC system anti-accident measures, the floating charging operation of the battery pack should be floated in a constant voltage mode except for the special regulations of the manufacturer. When floating charging, the single battery should be strictly controlled. The upper and lower limits of the floating charge voltage to prevent the battery from being damaged by the charging voltage, that is, to avoid long-term overcharging or undercharging.Taking the commonly used valve-controlled ⑩ sealed lead-acid battery as an example, it is found through experiments that when the actual float charge voltage is 5% different from the specified float charge voltage, the service life will be shortened by half.In daily maintenance, the specific requirements for charging parameters of different models and manufacturers of batteries cannot be treated differently. Arbitrary setting of charging parameters will eventually cause damage to the battery performance..Fourth, the battery charging and discharging frequency and depth are reduced. The operating mechanism of some system circuit breakers is electromagnetic. The large closing current indicator is a large current bulb, which increases the discharge current of the battery. When the field is activated, the battery capacity is always maintained at a high level.As the operating mechanism of the circuit breaker is gradually replaced with a spring energy storage type, the closing current is small, and the indication is replaced with a small current energy-saving bulb, which reduces the discharge current of the battery, which makes the activation frequency of the battery extremely low, and the active material of the battery substrate gradually Cured, the battery capacity gradually decreases.5. Irregular battery installation. Irregular battery installation, damage to the battery during storage and transportation, and non-compliance with the battery’s working environment temperature and ventilation conditions will adversely affect the battery’s life and performance..You may be interested: The working principle of the DC screen The main technical parameters of the buried transformer during the activation process of the DC screen Battery The performance characteristics of the landscape buried transformer How to solve the heat dissipation problem of the buried transformer Multi-point ground fault of the core of the buried transformer judge
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