ABB HU Instruction Leaflet page 24

Transformer differential relays
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41-347.12C
Figure 19. Outline and Drilling Plan of the Type HU and HU-1 Relays in the FT31 Case
*
Denotes change since previous issue
ABB Automation, Inc.
Substation Automation & Protection Division
4300 Coral Ridge Drive
Coral Springs, FL 33065
954 752-6700
800 523-2620
www.abb.com/papd
*Sub 4
3519A68
ABB Automation, Inc.
Substation Automation & Protection Division
7036 Snowdrift Road, Suite 2
Allentown, PA 18106
610 395-7333
800 634-6005
.

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