Busway now implements the standard??

The standard implemented by the busway industry is GB7251, which is equivalent to the international standard IEC439.

The national standard for intensive busway implementation currently has only one GB low-voltage complete switchgear and control equipment Part II: Special requirements for busbar trunk system (busway). Intensive busway former Ministry of Machinery Industry has a JB standard:

Dense insulated bus trunk system (dense insulated bus duct) JB T 9662-1999. But now dense busway is a product required by CCC.

Knowledge link] Closed busway (referred to as busway) is a busbar system composed of metal plates (steel plates or aluminum plates) to protect the shell, conductive bars, insulating materials and related accessories. It can be made into a plug-in closed busway with plug-in junction boxes at intervals, or a feed-in closed busway without a junction box in the middle. In the power supply system of high-rise buildings, the power and lighting lines are often set up separately, and the bus duct is installed vertically along the wall in the electrical shaft as the main power supply line.

Hello! I am a professional manufacturer technical engineer of busway!

The standard implemented by the busbar busway industry is GB7251, which is equivalent to the international standard IEC439, specifically:

1.National Standard (Low-voltage Complete Switchgear and Control Equipment Part I: Type Test or Partial Type Test Complete Sets of Equipment).

2.National Standard (Low-voltage Complete Switchgear and Control Equipment Part II: Special Requirements for Bus Trunk System (Bus Duct)".

Know the encyclopedia library map ) to solve.

Suggestion. You can do it according to the old standard.

The standard implemented by the busway industry is GB7251, which is equivalent to the international standard IEC439. The national standard for the implementation of intensive bus trace pin groove currently has only one GB low-voltage complete switchgear and control equipment Part II: Special requirements for bus trunk system (bus duct).

The former Ministry of Machinery Industry has a JB standard: Dense Insulated Bus Trunk System (Dense Insulated Bus Duct) JB T 9662-1999. But now dense busway is a product required by CCC.

Legal basis: Constitution of the People's Republic of China Article 53 Citizens of the People's Republic of China must abide by the Constitution and laws, keep state secrets, protect public property, abide by labor discipline, abide by public order, and respect social morality.

Legal analysis: The standard implemented by the busway industry is GB7251, which is equivalent to the international standard IEC439. The national standard implemented by the dense busway currently has only one GB low-voltage complete switchgear and control equipment Part II:

Special requirements for the bus trunk system (bus duct). The former Ministry of Machinery Industry has a JB standard: Dense Insulated Bus Trunk System (Dense Insulated Bus Duct) JB T 9662-1999.

But now the dense busway is a product that the CCC requires to hold macros.

Legal basis: Constitution of the People's Republic of China Article 53 Citizens of the People's Republic of China must abide by the Constitution and the law, keep state secrets, protect public property, abide by labor discipline, abide by public order, and respect social morality.

Lawyer analysis: the standard implemented by the busway industry is GB7251, which is equivalent to the international standard IEC439. The national standard implemented by the dense busway currently has only one GB low-voltage complete switchgear and control equipment Part II:

Special requirements for the bus trunk system (bus duct). The former Ministry of Machinery Industry has a JB standard: Dense Insulated Bus Trunk System (Dense Insulated Bus Duct) JB T 9662-1999.

But now dense busway is a product required by CCC.

Legal basis]:

Constitution of the People's Republic of China Article 5 Citizens of the People's Republic of China must abide by the Constitution and laws, keep state secrets, take care of public property, abide by labor discipline, abide by public order, and respect social morality.