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7

S T R U C T U R E   A N D   F U N C T I O N

6   Earthing blade
7   Fixed earthing contact

6 7

6

7

Figure 2: Example of 

an earthing switch 
mounted in a 

switchgear panel, 

shown in the closed 
position

Figure 2

Summary of Contents for ST-E Series

Page 1: ... ST E Earthing switch 24 kV INSTRUCTION MANUAL ST E Earthing switch 24 kV Safety Reliability Flexibility ...

Page 2: ......

Page 3: ... Table of contents 005 005 006 007 008 009 1 Summary 2 Technical data 3 Structure and function 4 Maintenance 5 Drawings ...

Page 4: ...e relevant information in the instruction manual for all actions involving switchgear Danger Pay special attention to the hazard notes in the instruction manual marked with this warning symbol Make sure that the specified criteria are not exceeded under switchgear operation and maintenance Ensure the instruction manual is accessible to all personnel involved in installation operation and maintenan...

Page 5: ...e earthing switches are supplied as kits with a pre assembled active part and corresponding earthing contacts supplied loose Correct installation of these parts in a switchgear panel results in a functioning earthing switch Routine tests to GB T 1985 or IEC 62271 102 are to be carried out at assembling site accordingly 2 Technical data Earthing switch Type ST E 210 ST E 275 Pole centers P mm 210 2...

Page 6: ...it conforms to that show in the dimensional drawings 6 ST E EARTHING SWITCH INSTRUCTION MANUAL 1 2 3 4 5 6 1 Driving shaft 2 Toggle spring 3 Actuating shaft 4 Earthing conductor 5 Short circuiting bridge 6 Earthing blade Figure 1 Example of the active part of an earthing switch mounted on a switchgear panel partition without fixed earthing contacts Figure 1 The earthing switch has a snap action cl...

Page 7: ...7 STRUCTURE AND FUNCTION 6 Earthing blade 7 Fixed earthing contact 6 7 6 7 Figure 2 Example of an earthing switch mounted in a switchgear panel shown in the closed position Figure 2 ...

Page 8: ...ut inspection and maintenance of the earthing switches at appropriate intervals together with the switchgear particularly in exceptional operating conditions and or under adverse environmental influences such as pollution and aggressive air Check whether the operating mechanism functions smoothly and easily Carry out general visual examination for the condition of mechanical fasteners dirt moistur...

Page 9: ... 5 Drawings 9 DRAWINGS Earth position Open position ...

Page 10: ...tions subject to change without notice ABB Xiamen Switchgear Co Ltd No 885 FangShanXiEr Road Xiang an District Xiamen Fujian 361101 Tel 0592 602 6033 Fax 0592 603 0505 ABB China Customer Service Hot Line TEL 800 820 9696 400 820 9696 mail cn ep hotline abb com www abb com ...

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