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DEMA DPM 400 D - User Manual

DEMA DPM 400 D
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DPM 400 D
DIRECTIONAL PROTECTION RELAY
USER GUIDE

Table of Contents

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Summary

Introduction to DEMA 400 Series Relays

General Characteristics of DEMA 400 Series Relays

Physical Properties - Case and LEDs

3.1 Case and Construction

Describes the relay's stainless steel case, PVC coating, terminal blocks, and earthing provisions.

3.2-3.5 Relay Status LEDs

Details the function and behavior of Phase Fault, Earth Fault, Trip, and Alarm LEDs.

Physical Properties - Front Panel Interface

3.6-3.8 LEDs, Ethernet Port & Front Cover

Covers Power/Error LEDs, Ethernet port, and IP52 front cover.

3.9-3.14 Display, Buttons and Unit Lock

Describes the TFT display, multifunctional/reset buttons, and the internal unit lock mechanism.

Physical Properties - Labels and Connectors

3.15-3.18 Device Label, Earthing, Terminals & Coating

Explains device labels, earthing screws, terminal blocks, and special case coating.

Physical Properties - Internal Unit and Mounting

3.19-3.22 Circuit Diagram, Internal Unit & Mounting Tracks

Details the circuit diagram, internal unit design, and mounting tracks for the relay.

Physical Properties - Protection and Locking

3.23-3.24 Case Earthing Contact & Faraday Cage

Covers case earthing continuity and the Faraday cage for internal component protection.

Physical Properties - Locking Mechanisms

3.25-3.29 Unit Terminals, Locking & Handles

Describes terminal blocks, unit tracks, locking mechanisms, and handle/trigger functions.

Physical Properties - Case Mounting

3.30-3.33 Cover Screws, Plugs & Mounting Holes

Details cover mounting screws, terminal plugs, lock pivots, and mounting holes.

Main Menu Overview

4.1 Informations

Displays device-specific data like serial number, firmware version, and hardware details.

4.2 Measurements

Provides real-time monitoring of voltage, current, power, and frequency measurements.

4.3 Protection Settings

Allows configuration and adjustment of various protection functions and their parameters.

4.5 System Settings

Manages device language, date-time, display settings, and other system configurations.

4.6 Configuration

Enables field installation setup, phase rotation, blocking modes, and communication settings.

Summary

Introduction to DEMA 400 Series Relays

General Characteristics of DEMA 400 Series Relays

Physical Properties - Case and LEDs

3.1 Case and Construction

Describes the relay's stainless steel case, PVC coating, terminal blocks, and earthing provisions.

3.2-3.5 Relay Status LEDs

Details the function and behavior of Phase Fault, Earth Fault, Trip, and Alarm LEDs.

Physical Properties - Front Panel Interface

3.6-3.8 LEDs, Ethernet Port & Front Cover

Covers Power/Error LEDs, Ethernet port, and IP52 front cover.

3.9-3.14 Display, Buttons and Unit Lock

Describes the TFT display, multifunctional/reset buttons, and the internal unit lock mechanism.

Physical Properties - Labels and Connectors

3.15-3.18 Device Label, Earthing, Terminals & Coating

Explains device labels, earthing screws, terminal blocks, and special case coating.

Physical Properties - Internal Unit and Mounting

3.19-3.22 Circuit Diagram, Internal Unit & Mounting Tracks

Details the circuit diagram, internal unit design, and mounting tracks for the relay.

Physical Properties - Protection and Locking

3.23-3.24 Case Earthing Contact & Faraday Cage

Covers case earthing continuity and the Faraday cage for internal component protection.

Physical Properties - Locking Mechanisms

3.25-3.29 Unit Terminals, Locking & Handles

Describes terminal blocks, unit tracks, locking mechanisms, and handle/trigger functions.

Physical Properties - Case Mounting

3.30-3.33 Cover Screws, Plugs & Mounting Holes

Details cover mounting screws, terminal plugs, lock pivots, and mounting holes.

Main Menu Overview

4.1 Informations

Displays device-specific data like serial number, firmware version, and hardware details.

4.2 Measurements

Provides real-time monitoring of voltage, current, power, and frequency measurements.

4.3 Protection Settings

Allows configuration and adjustment of various protection functions and their parameters.

4.5 System Settings

Manages device language, date-time, display settings, and other system configurations.

4.6 Configuration

Enables field installation setup, phase rotation, blocking modes, and communication settings.

DEMA DPM 400 D Specifications

General IconGeneral
Amperage10A
Contact TypeSPDT
Rated Current10A
Contact Configuration1 Form C (SPDT)
Mechanical Life10, 000, 000 operations
Protection DegreeIP40
Coil Voltage24V DC
Electrical Life100, 000 operations
Voltage250V AC/30V DC
Rated Voltage250V AC/30V DC

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