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DEMA 400 Series User Manual

DEMA 400 Series
118 pages
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DPM 400 D
DIRECTIONAL PROTECTION RELAY
USER GUIDE

Table of Contents

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DEMA 400 Series Specifications

General IconGeneral
BrandDEMA
Model400 Series
CategoryRelays
LanguageEnglish

Summary

Main Menu Overview

Main Menu Sections

Protection Settings Menu

Current Protection Settings Configuration

Configures settings for phase and earth overcurrent, thermal overload.

Voltage Protection Settings Configuration

Configures settings for over/under voltage and negative sequence voltage.

Frequency Protection Settings Configuration

Configures settings for low, over, and rate-of-change frequency protection.

Power Protection Settings Configuration

Configures settings for directional active/reactive over/under power.

Protection and Reset Curves

Current Protection Settings

Phase Overcurrent Protection (ANSI 50/51P)

Protects against overcurrents in phases.

Earth Overcurrent Protection (ANSI 50/51N)

Protects against earth overcurrents.

Voltage Protection Settings

Frequency Protection Settings

Power Protection Settings

Directional Active Over-Power Protection (ANSI 32OP)

Starts when total active power reading exceeds the starting value.

Directional Active Low Power Protection (ANSI 32UP)

Starts when total active power reading falls below the starting value.

Directional Reactive Over-Power Protection (ANSI 32OQ)

Starts when total reactive power reading exceeds the starting value.

System Settings Menu

Device Configuration Settings

CT/VT Settings Details

Ethernet Interface Settings Configuration

Function Test Procedures

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