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May 27,2024

This is the correct way to use the multimeter, the old electrician with the right?

① Use a multimeter to develop a good habit, that is, before each measurement to see if the gear is placed correctly. With such a habit, the probability of burning the table will be greatly reduced. ② Select the range should try to make the pointer indicate near the 2/3 of the full scale, and the reading is more accurate. If you don't know the size of the measured voltage and current, you should select a large range block, and then readjust the range according to the reading size to make the reading accurate. ③ When measuring resistance, it is necessary to reset the zero after changing the range block so that the reading can be accurate. If it is not adjusted to zero, it means that the battery voltage in the table is insufficient and the battery should be replaced.

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This is the correct way to use the multimeter, the old electrician with the right?

May 27,2024

Does the unqualified appearance of power fittings affect the use?

Electric fittings belong to metal fittings, which can play the role of transmitting mechanical load, electrical load and protection, and can be used to connect and combine into a variety of devices. The hardware used in the power system needs to bear a large pulling force to ensure the normal connection of the circuit. Therefore, the damage of the power hardware will cause the line failure. 10kV and above high-voltage distribution lines are mostly laid in the open air except for a small number of cables laid underground. However, there is a problem of hot-dip galvanized layer in appearance. If the hot-dip galvanized layer is uneven, with yellow spots, plating leakage, plating thorns, etc., plating leakage and unevenness are easy to corrode the gold fixture body, affect the strength, plating thorns, and easily stab the operator during installation and use.

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Does the unqualified appearance of power fittings affect the use?

May 27,2024

The main function of aluminum alloy tension clamp

Aluminum alloy strain clamp is mainly used for corner, connection, and terminal connection. The spiral aluminum-clad steel wire has strong tensile strength and no concentrated stress, which can protect the optical cable and assist in vibration reduction. The whole set of optical cable tension fittings includes: tension pre-twisted wire and matching connection fittings. The grip of the wire clamp is not less than 95% of the rated tensile strength of the optical cable, which is convenient and fast to install and reduces the construction cost. It is suitable for ADSS optical cable lines with gear distance ≤ 100 m and line angle <25. Strain clamps are used to hold the wire to withstand the tension of the wire and hang the wire to the tension string group or the metal fitting on the tower.

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The main function of aluminum alloy tension clamp

May 27,2024

Problems Considered in the Structure of U-shaped Hoop

(1) The U-shaped hoop should have sufficient strength and rigidity to transmit tension and friction and support the weight of the structure. A steel plate with a thickness of 10mm to 20mm can be used. (2) Since the U-shaped hoop connecting plate is a member that directly supports the tension of the bolt, it needs to have sufficient strength and rigidity. According to theoretical calculations and practical experience, steel plates with a thickness of 24mm to 30mm are suitable. (3) Since the bolts on the U-shaped hoop connecting plate are arranged in double rows, the outer row of bolts generates a large eccentric moment on the U-shaped hoop body when pressure is applied, which adversely affects the power transmission of the U-shaped hoop body. Therefore, the screw assembly should be as compact as possible. It is recommended to meet only design and power transmission requirements. (4) In order to increase the rigidity of the U-shaped hoop connecting plate and reliably transmit the screw tension in the vertical direction, a reinforcing plate should be set for the connecting plate every 2-3 rows of screws.

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Problems Considered in the Structure of U-shaped Hoop

May 27,2024

What are the factors that affect line loss?

What are the factors that affect the line loss of power fittings manufacturers? 1, frequency changes have an impact on line loss. 2. The change of voltage has an impact on the line calculation. 3, the transmission of reactive load has an impact on line loss. 4, the load rate has an impact on the line loss. 5, meter reading has an impact on line loss. 6, management work has an impact on line loss.

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What are the factors that affect line loss?
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