2020-07-24 11:00

Notes on choosing bus GB311.1-1997 "Insulation Coordination of High Voltage Transmission and Transformation Equipment" stipulates: (8) Try to avoid that there is no air gap between the two busbars. ...

2020-07-24 10:59

Busbar parts that do not require busbar thermal and electrodynamic effects verification (1) Adopt fuse protection and connect to the bus bar under the fuse (except current-limiting fuse). (2) Busbar...

2020-07-24 10:58

The minimum span when the commonly used rectangular busbars are arranged relative to the thickness direction of the busbars For example: for a 31.5kA system, ich takes 80kA, such as for KYN28-12 s...

2020-07-24 10:58

Bus electrodynamic effect For the 31.5kA/4S system, the minimum cross-sectional area of the grounded copper busbar is: S=330×86.7% =287mm2 Calculated according to the above formula, corresponding to...

2020-07-24 10:57

Busbar ampacity calculation I4=2.45Id In the formula, I4 is the current carrying capacity of the four-layer copper busbar (A). Note: Two-layer and above copper bars mean that there is an air gap be...

2020-07-24 10:56

Relationship between busbar layout and current carrying capacity The current carrying capacity of the busbar is higher than that when it is placed horizontally. Generally, when the busbar is laid fl...

2020-07-24 10:56

Common sense of copper bar selection 1 Introduction 2 Types of busbars In indoor switchgear and control equipment, the busbars are divided into rectangular, circular, D-type, U-shaped, etc. according ...

2020-07-24 10:55

Insulation powder film forming defects and solutions The problems that occur during the use of insulating powder are summarized below for reference.   4. Dimples in the coating film: impro...

2020-07-24 10:53

Copper bars, aluminum bars, bus bars, bus bars, bus bar insulation powder, epoxy powder problems and solutions 1. Usage of products Thermal spraying method: the workpiece is preheated to 180~240C, t...