Download e-book for iPad: ABB Electrical Installtion Handbook by Malestorm

By Malestorm

ISBN-10:

ISBN-13: 1301301301001

ISBN-10: 6086511993

ISBN-13: 9786086511999

ISBN-10: 6100812002

ISBN-13: 9786100812002

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Extra info for ABB Electrical Installtion Handbook

Sample text

2 Trip curves 3 General characteristics Trip curve electronic releases PR 122/PR123 release – Other protection functions Trip curve electronic releases The following curves refer to the particular protection functions provided for PR122/PR123/PR332/PR333.

For T4 In = 320 A, T5 In = 630 A and T6 In = 630 A ⇒ I3 max = 10 x In. Only the electronic settings are available. 9-1 In disabled at 8 In t=k 10-1 10-1 T7 S,H,L t=k T7 V 10-2 10-2 10-3 10-3 10-1 10 1 10 x In 102 I [kA] 10-1 1 10 10 2 I [kA] For T7 In = 1250 A, 1600 A ⇒ I3 max = 12 x In. 13 0,5 0,4 103 102 0,7 0,95 0,6 0,8 1 0,9 1,5 t [s] t [s] 2 D C 102 10 B 4 A 6 8 D C 101 1 10 12 B A 1 10-1 10-2 10-3 10-1 10 1 10 2 I [kA] 10-2 10-1 1 1,05 101 Note: for PR211/P-I releases, consider the curves relevant to function I only.

IEC 60255-3 Trip curve electronic releases t [s] Emax PR122/P-PR123/P PR332/P- PR333/P The following three curves refer to the protection function L complying with Std. IEC 60255-3 and integrate the standard one; they are applicable in coordination with fuses and MV circuit-breakers. 2 Trip curves 3 General characteristics Trip curve electronic releases PR 122/PR123 release – Other protection functions Trip curve electronic releases The following curves refer to the particular protection functions provided for PR122/PR123/PR332/PR333.

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ABB Electrical Installtion Handbook by Malestorm


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