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Group D, 7/8 inch, Class 2, Drawing
This drawing provides mechanical specifications, outline dimensions, and mounting information for Group D, 7/8-inch, Class 2 current transformers.
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Group C, 3/4 inch, Class 2, Drawing
This drawing provides mechanical specifications, outline dimensions, and mounting information for Group C, 3/4-inch, Class 2 current transformers.
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Group B, 3/4 inch, Class 2, Drawing
This drawing provides mechanical specifications, outline dimensions, and mounting information for Group B, 3/4-inch, Class 2 current transformers.
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Group A, 5/8 inch, Class 2, Drawing
This drawing provides mechanical specifications, outline dimensions, and mounting information for Group A, 5/8-inch, Class 2 current transformers.
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Technical Paper: Voltage Restrained Time Overcurrent Relay Principles, Coordination, and Dynamic Testing Considerations
Dynamic response of 51/27R relays in which the overcurrent element conforms to the dynamic characteristic defined in ANSI C37.112.
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Technical Paper: Upgrading Intertie Protection to meet TX PU Standards
Utilizing multifunction relays as the sole means of protection, not only for the plant and its generation, but also for the utility.
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Technical Paper: Successful DG Projects: Design and Build Considerations
Design and build challenges for four DG projects.
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Technical Paper: Reliability Considerations of Multifunction Protection
Reliability of numerical multifunction protection systems against predecessor technologies.