Charging pile is now a common energy supply equipment, but there are still a lot of people do not know how many square wires are needed to install charging pile. Charging pile wire harness thickness can not be unified, mainly by the charging pile capacity and wire harness in the flow of power to withstand the voltage to determine, generally speaking, the charging pile wire than other wires are much thicker, today we learn how to install the charging pile when choosing the right cable.

Cable selection

A charging pile can be single-phase or three-phase. Regardless of whether it is dual-phase or single-phase, you need to calculate how much AC incoming current is.

(1) For single-phase charging pile (AC charging pile) I=P/U

(2) For three-phase charging pile (DC charging pile) I=P/(U*1.732)

After calculating the current in this way, select the cable according to the current size.

The selection of cables can refer to the relevant manuals or regulations such as:

(1) Single-phase charging pile is generally 7KW (AC charging pile)

According to I=P/U=7000/220=32A 4 mm square copper core cable should be used.

(2) Three-phase charging pile (DC pile)

15KW current 23A cable 4 mm square

30KW current 46A cable 10 mm square

60KW current 92A cable 25 sq mm

90KW current 120A cable 35 mm square

In addition, all charging piles should have zero and ground lines.

Therefore, the single-phase cable should be three-core, and the three-phase cable should be five-core.

Charging pile construction requirements

As an electric vehicle charging pile (peg) on the power distribution side of the power grid, the particularity of its structure determines the characteristics of the automated communication system, which is characterized by many measured points and scattered, wide coverage and short communication distance. And with the development of the city, the network topology requires a flexible and extensible structure, therefore, the selection of electric vehicle charging pile (peg) communication mode should consider the following issues:

Reliability -- The communication system should withstand harsh environments and strong electromagnetic interference or noise interference for a long time, and maintain smooth communication.

Construction costs - Consider the cost of construction and the cost of long-term use and maintenance under the premise of reliability.

Two-way communication - not only the upload of information, but also the delivery of control.

Data transmission rate of multiple services - With the continuous growth of terminal business volume in the future, the communication between the main station to the sub-station and the sub-station to the terminal requires more and more high data transmission rate to achieve multiple services.

❺ Flexibility and scalability of communication -- Charging piles (plugs) are characterized by multiple, wide and dispersed control points, requiring the adoption of standard communication protocols. With the development of "ALL IP" network technology and the continuous growth of power operation business, IP-based service bearer needs to be considered. At the same time, it is required to facilitate installation, construction, commissioning, operation and maintenance.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable.