1. Avoid installing low-voltage meter boxes on distribution transformers

Should be gradually remove the remote mountainous area of low pressure metering box installed on distribution transformer, as far as possible to the indoor installation, such as a few years ago I destroy without electricity township, to facilitate management to prevent power loss, the remote mountainous areas have installed low pressure metering box, because of the long running, metering box glass damage or low-voltage distribution transformer damage of pile head cannot be replaced in time, the burn out due to the rain of watt-hour meter distribution transformer is damaged.

 

2. Reasonably choose the capacity of distribution transformer

It is also very important to choose the capacity of the distribution transformer rationally, which can neither cause the over-load of the distribution transformer to burn out, nor cause the waste of large horse-drawn trolley type. The capacity of distribution transformer should be chosen reasonably according to the load of users. A 100 kV? When the power factor of A distribution transformer is 0.85, it can carry 85 kW load.

 

3. Avoid installing low-voltage meter boxes on distribution transformers

Should be gradually remove the remote mountainous area of low pressure metering box installed on distribution transformer, as far as possible to the indoor installation, such as a few years ago I destroy without electricity township, to facilitate management to prevent power loss, the remote mountainous areas have installed low pressure metering box, because of the long running, metering box glass damage or low-voltage distribution transformer damage of pile head cannot be replaced in time, the burn out due to the rain of watt-hour meter distribution transformer is damaged.

 

4. Choose the installation place of distribution transformer reasonably

The installation of distribution transformers should meet the requirements of users' voltage, and try to avoid the installation of distribution transformers in barren mountains, vulnerable to lightning attack and far from residential areas, which is not convenient for operators to maintain regularly, not easy for staff management.

 

5. Strengthen the measurement of electricity load

In the peak period of electric load, the load measurement of each distribution transformer should be strengthened and the number of measurement should be increased when necessary. The unbalanced distribution transformer with three-phase current should be adjusted in time to prevent the failure of user equipment caused by excessive neutral line current.

 

6. Add insulation cover on high and low of distribution transformer

In order to prevent natural disaster and external damage, if necessary, the high and low voltage insulation cover is installed in the small areas and forest protection areas with narrow roads to prevent the power distribution transformer from dropping something and causing the low voltage short circuit to burn out the transformer.

 

7. Reasonable configuration of high-low voltage fuse for distribution transformer

Distribution transformer high and low voltage fuse melt configuration is not reasonable, easy to cause the distribution transformer serious overload and burning the distribution transformer. High and low pressure melt configuration should follow: voltage capacity of 100 kV? The transformer below A is equipped with A fuse body of 2.0-3.0 times rated current; Is the injection capacity at 100 kV? The transformer above A is equipped with A melt of 1.5 ~ 2.0 times rated current; The rotor low-voltage side fuse shall be configured with a slightly larger current rating.

 

8. Do not adjust the tap switch without permission

Due to the difference of power load in winter and summer, the voltage level is slightly different. In order to meet the demand of voltage, some rural electricians adjust the tap switch at will without carrying out related test, resulting in the tap switch is not in place, causing interphase short circuit and burning the distribution transformer.

 

9. Strengthen daily management

Inspect the line regularly and cut down the trees to prevent the branches from hitting the wire and causing a low voltage short circuit to burn out the distribution transformer. The lack of daily management of the distribution transformer enables the transformer to run without oil for a long time, and when the respirator is installed at the end or the silicone is not replaced in time, which makes the distribution transformer wet with water and easy to cause accidents. The distribution transformer itself has the quality problem, because the distribution transformer installation place is far away, some construction personnel put the untested distribution transformer into operation without authorization, the electricity is used temporarily, but burns out the transformer.

 

10. The high and low voltage side of distribution transformer should be equipped with lightning arresters

Lightning arresters should be added to the distribution transformer in the multi-mine area. If the arresters are unqualified or fail to be replaced in time, the transformer will be easily damaged by lightning. Every year the thunderstorm season, should send the lightning arrester to repair test department after passing the test to install in time, prohibit to use the unqualified product.

 

11. Measure the grounding resistance of distribution transformer regularly

The distribution transformer is seriously oxidized after long-term operation (especially when the grounding leads are replaced by aluminum wires), the grounding resistance increases, and the ground grounding body rusts and breaks, resulting in neutral point potential excursion. When lightning strikes or overvoltage occurs, accidents are easy to occur. According to the regulations, the grounding device should meet: 100kV? A power distribution transformer grounding resistance is not more than 10 Ω, 100 kv? More than A distribution transformer grounding resistance is not greater than 4 Ω.

 

12. Check the low-voltage lead of distribution transformer regularly

It is strictly forbidden to use the wire itself as the wire nose and directly go to the distribution transformer low-voltage pile head. The connection point between the lead and the distribution transformer pile head should be checked regularly to prevent burning of the distribution transformer low-voltage pile head due to loose.

In order to make the power distribution transformer operate safely for a long time and have fewer faults, as the operation manager, it is necessary to check, maintain and measure frequently, find problems and deal with them timely, so as to avoid burning the power distribution transformer.

 

In order to ensure the distribution transformer has the operation conditions and prevent the transformer from burning, the baoding oil-immersed transformer must be inspected on site before operation, and some preventive measures should be taken to avoid or eliminate the transformer in the bud, so as to minimize the accident rate.

 

Baoding zhongyi electric material manufacturing co., LTD is a professional manufacturer of transformer for baoding transformer factory. It has professional production equipment, hoisting, tooling and testing equipment, and has established a perfect quality management system.

 

Main products of the company: baoding dry type transformer, baoding box type transformer, baoding oil immersed transformer, baoding high and low voltage complete sets of equipment. I companies to follow "detail decides success or failure, honesty molded the future" of the enterprise purpose, adhere to "quality measuring market, seek development by innovation, to management for efficiency" business philosophy, to make my company's products are widely used in power plant, chemical, construction, mining, metallurgy, rail transportation and other industries, to meet the needs of various users, my company rely on superior product quality, thoughtful service, won the trust of our customers.