Conomel

Power quality issues (three-phase imbalance)

Power quality issues (three-phase imbalance)

  Under normal operation of the system, the unbalanced capacity and electrical location of single-phase loads (such as electrified railways, electric arc furnaces, and electric welding machines) in a three-phase system will cause the three-phase imbalance in the system.

  The harm of three-phase imbalance: it will cause the neutral line current to increase, thereby increasing the power loss of the line; it will cause local heating and aging of the neutral line, and even a fire; it will cause the impedance drop of the neutral line, which will cause the neutral point to drift and the zero-ground voltage to be high Safe operation of microcomputer-based electrical equipment; resulting in reduced processing of distribution transformers and increased losses, which can easily cause the distribution transformer to heat up or even burn out.

  Significance of controlling three-phase imbalance: reducing the neutral current and avoiding neutral line heating; avoiding problems that endanger the safety of electrical equipment caused by voltage drift at the neutral point; avoiding reduced output and heat generated by the distribution transformer due to three-phase imbalance Wait for a series of questions.

HOT INFO

Knowledge of switchgear power distribution
Knowledge of switchgear power distribution
Time of issue : 2019-11-18 16:59:00
Switchgear: refers to a complete set of power distribution devices that are assembled from primary equipment and secondary equipment according to a certain circuit scheme. It is used to control and protect the lines and equipment. It is divided into fixed and handcart styles. The line voltage level can be divided into high voltage switchgear (fixed and handcart) and low voltage switchgear (fixed and drawer). The structure of the switch cabinet is similar, and it is mainly divided into a bus room, a circuit breaker room, a secondary control room (instrument room), and a feeder room. Generally, steel plates are used to isolate the rooms.
See more information
How to solve the electrical fault?
How to solve the electrical fault?
Time of issue : 2019-11-18 16:59:00
There are various electrical fault phenomena. For example, the same type of fault may have different fault phenomena, and different types of faults may be the same fault phenomenon. The identity and diversity of this fault phenomenon bring complexity to find the fault. . However, the failure phenomenon is the basic basis for finding electrical faults and the starting point for finding electrical faults. Therefore, we must carefully observe and analyze the failure phenomena, find out the most important and typical aspects of the failure phenomena, and find out the time and place of the failure , Environment, etc.
See more information

Conomel

CONOMEL (CHINA)

Tel: 0086-755-26602705     Fax:0086-755-26909258      Mailbox:china@conomel.com

Add: No. 198, Daxin Road, Nantou Street, Nanshan District, Shenzhen

Copyright © 2019 Conomel (Shenzhen) Technology Co., Ltd. all rights reserved

粤ICP备18151755号

 

Copyright © 2019 Conomel (Shenzhen) Technology Co., Ltd. all rights reserved

粤ICP备18151755号