Protection Features - GE D90 Plus Instruction Manual

CHAPTER 2: PRODUCT DESCRIPTION
Front panel USB port

Protection features

Distance protection
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 7: Front panel control example
The front panel of the D90
This makes downloading and uploading faster and more convenient.
Figure 8: Front panel USB connection
Plus
The D90 is designed for superior performance and ease-of-use, providing a single
platform solution for protecting transmission lines from medium voltage (MV) to extra high
voltage (EHV) and cables of various voltage levels. The scalable platform consists of
protection, control, automation, monitoring, communication, digital fault recorder (DFR)
and security functionality. The incrementally scalable concept allows customization in
building the device to suit specific user requirement. The truly convergent platform
integrates multiple devices eliminating external devices and reduces the footprint of relay
panels resulting in reduced wiring, commissioning and capital costs.
Plus
The core of the D90 relay is the subcycle distance function providing a high degree of
sensitivity and selectivity for all types of faults. The distance function features five zones of
phase and ground distance protection, providing the user the utmost flexibility of making
each zone directional, non directional, or reverse. This allows customization to a variety of
applications, including primary line protection, backup protection for busbars, and backup
Plus
provides a USB 2.0 port for simple data transfer and access.
DEVICE OVERVIEW
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