Standard No.:	GB 7251.3-1997
English Name:	Low-voltage switchgear and controlgear assemblies--Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use-Distribution boards
Chinese Name:	低压成套开关设备和控制设备 第三部分:对非专业人员可进入场地的低压成套开关设备和控制设备--配电板的特殊要求
Chinese Classification:	K31    Low-voltage distribution electrical equipment
Professional Classification:	GB    National Standard
Issued by:	State Technical Supervision Bureau
Issued on:	1997-01-02
Implemented on:	1998-10-1
Status:	superseded
Superseded by:	GB 7251.3-2006 Low-voltage switchgear and controlgear assemblies—Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskille GB/T 7251.3-2006
Superseded on:	2007-3-1
Abolished on:	2007-03-01
Language:	English
File Format:	PDF
Word Count:	5500 words
Price(USD):	160.0
Delivery:	via email in 1~3 business day

本标准给出了用于封闭式配电板（箱）（DBU）带有保护器件的户内固定式型式试验成套设备（TTA）的补充要求，这类设备适用于民用或适合于在非专业人员（外行人）可以进入的场地使用。配电板（箱）包括控制设备及信号设备。它们用于交流，其标称对地电压不超过300V。输出电路包含有短路保护器件，在输入总负载电流不超过250A时，每个短路保护器件的额定电流不超过125A。