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GE 850 User Manual

GE 850
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6–126 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
POWER ELEMENTS CHAPTER 6: PROTECTION SETPOINTS
Power Elements
Figure 6-54: Power Elements Display Hierarchy
Level 1 Level 2 Level 3 Level 4 Level 5
Setpoints
Device
System
Inputs
Outputs
Protection
Monitoring
Control
FlexLogic
Data Capture
Power
Frequency
Voltage
Current
Wattmetric Ground Fault
Directional Power
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Testing

Table of Contents

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GE 850 Specifications

General IconGeneral
BrandGE
Model850
CategoryProtection Device
LanguageEnglish

Summary

850 Feeder Protection System

Common Setpoints

Provides a general description of common setpoints and their operational characteristics.

Device

Covers device configuration modes (Simplified/Regular) and custom configuration options.

Current Elements

Details various current-based protection elements like TOC, IOC, and directional overcurrent.

Local Control Mode (breakers and switches)

Details local control operations for breakers and switches via front panel or contact inputs.

FlexLogic

Explains the arrangement of internal digital logic and user-programmed parameters for flexible control.

Specifications

Provides detailed technical specifications for the device, including protection, input/output, and communication parameters.

Voltage Elements

Introduces undervoltage, overvoltage, and frequency protection elements.

Breaker Failure (50BF)

Details the Breaker Failure scheme for detecting and responding to breaker failures.

Cautions and Warnings

Outlines safety indicators, general precautions, and specific warnings for installation and operation.

Security

Explains Basic Security and CyberSentry features, including roles, password complexity, and AAA server authentication.

Autoreclose

Covers the Autoreclose scheme for automatic reclosing after faults.

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