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Self-reclosing overcurrent and earth leakage protection

Self-reclosing overcurrent and earth leakage protection

Product catalog summary

Overview: The document provides comprehensive technical details on self-reclosing overload and earth leakage protection systems, focusing on relays and circuit breakers designed for automatic reclosure and earth leakage protection. It covers specifications, operational procedures, standards compliance, and applications for various models.

Specifications: The document details specifications for models like REC2, WRU RA, WRU-10 RAL, and others. Key specifications include:

Protection Class: Electromechanical, Class A, and superimmunized types.
Measurement: Instantaneous value and True Root Mean Square (TRMS).
Sensitivity: Adjustable from 30 mA to 3 A, with some models up to 30 A.
Delay: Fixed or adjustable, ranging from 20 ms to 1 s, with programmable options.
Reclosure: Number of reclosures and time intervals specified, with programmable settings available.

Procedures: Operational procedures include:

Automatic reclosure sequences with specified time intervals.
Insulation monitoring mode for safe reclosure.
Manual and automatic reset options.

Standards: Compliance with international standards such as IEC 61008-1, IEC 60947-2, IEC 60755, and IEC 62020 ensures reliability and safety.

Applications: Suitable for installations requiring earth leakage protection, such as lighting panels, telephony installations, refrigeration chambers, and public infrastructure like traffic lights and ATMs.

Key Features: Features include:

Built-in transformers for compact design.
LED indicators for operational status and fault detection.
Remote signaling and control capabilities.
DIN rail mounting for easy installation.

Product Selection: A product selection table details compatibility of different relays with circuit breakers and their applications.

Key Components and Features:

Main Relay: Provides protection with pre-alarm and locking features.
Voltage Input: Allows external triggering and reclosing.
Fitting and Size: Compatible with DIN 46277 (EN-50022) profile, reduced three-module size.
Connection: Utilizes pluggable terminals.

Specific Products:

WRU-10 RAL: Differential relay with built-in transformer and display, offering programmable reclosure.
RGU-10 RAL: Electronic earth leakage protection relay with superimmunized type A relay and true RMS monitoring.
CBS-4 RA/RAL: Intelligent earth leakage protection suitable for centralized supervision.
CBS-8: Protection for up to 8 networks with RS-485 communications.
WRKRT-25: Relay with built-in transformer for self-reclosing earth leakage and overload protection.

Technical Specifications:

Earth Leakage Protection: Class A superimmunized, true RMS measurement, programmable sensitivity and delay.
Reclosure Features: Programmable number of reclosures and time between reclosures.
Construction: Designed for DIN rail mounting, with various module sizes and protection degrees.
Standards Compliance: Complies with standards like IEC 61008-1, IEC 755, IEC 255-5.

Applications: Ideal for installations in locations difficult to monitor, ensuring maximum security and continuity of electrical service.

Motorized Circuit Breakers: Specifications include:

Earth Leakage Protection: Class A superimmunized with TRMS measurement, sensitivity of 0.03/3 A, and a fixed delay of 20 ms.
Motorized Circuit Breakers: Available in series like RECmax MP, MT, MT-FDE with current ratings up to 250 A.
Standards Compliance: Products comply with IEC standards such as IEC 61008-1, IEC 947-2, and IEC 60898.

Features:

Remote control capabilities for connection/disconnection.
LED indicators for device status (ON/OFF).
Test/Reset functionality for checking and resetting the device.

Construction and Installation:

Designed for DIN rail mounting with varying dimensions based on the number of poles.
Protection degree of IP 40 for embedded components.

Reclosure and Safety:

Systems allow multiple reclosures with specific intervals between attempts.
Safety interlocking features to prevent unauthorized access.

RECmax P Circuit Breaker: Specifications include:

Current Ratings: Available from 6A to 63A, with C and D curve options.
Power Supply: Operates at 230 V, 50-60 Hz, with a power consumption of 5 VA.
Output Contacts: Rated at 250 Vac, 1 A.
Operating Temperature: -10 to +50 ºC.
Protection Degree: IP 20 for terminals, IP 41 for the back panel.

Features:

Self-Reclosing Functionality: Programmable number of reclosures and time intervals.
Safety Interlocking: Integrated with a disconnection lever.
Remote Control and Signaling: Includes local LED indicators and remote signaling capabilities.

Applications: Suitable for automatic reclosing of motorized circuit breakers, particularly in systems using MT or MT-FDE series breakers.

Product and Accessory Relations: Compatibility with various accessories such as adaptor panels, contactors, and earth leakage transformers.

Catalog excerpts

Self-reclosing overcurrent and earth leakage protection-1

Self-reclosing overload and earth leakage protection

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Self-reclosing overcurrent and earth leakage protection-2

Self-reclosing overload and earth leakage protection P2- Self-reclosing overload and earth leakage protection Self-reclosing earth leakage relay· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-5 Earth leakage relay with built-in transformer· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-7 Differential relay with built-in transformer and display (type A)· · · · · · · · · · · · · · · · · ·...

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Self-reclosing overcurrent and earth leakage protection-3

Self-reclosing overload and earth leakage protection Complete overload and earth leakage protection and reclosure equipment· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-37 Self-reclosing motorized circuit breaker (up to 63 A) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-38 · · Overload reclosing relay· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-40...

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Self-reclosing overcurrent and earth leakage protection-4

Self-reclosing overload and earth leakage protection Product selection table Earth Leakage Earth leakage switch Earth Leakage Earth Leakage External toroidal Earth Leakage Associated circuit breaker Earth Leakage Earth Leakage Earth Leakage Earth Leakage Earth Leakage Contactor Earth Leakage Earth Leakage Earth Leakage + circuit breaker Earth Leakage + circuit breaker Earth Leakage + circuit breaker Earth Leakage + circuit breaker Earth Leakage + circuit breaker Earth Leakage + circuit breaker Earth Leakage + circuit breaker Earth Leakage + circuit breaker Earth Leakage + circuit breaker Earth...

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Self-reclosing overcurrent and earth leakage protection-5

Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing RCCB with Self-reclosing system Self-reclosing earth leakage relay Description REC2 is a 2 or 4-pole earth leakage switch associated to a compact motor and control set that enables the automatic and safe reclosure of the installation, provided that the leakage is not permanent. Output contact available in REC2C model The earth leakage switch is reclosed automatically, in accordance with the work mode selected (switch on the front): }} Time sequence mode: after a switch trip, REC2 will make 6 reclosing...

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Self-reclosing overcurrent and earth leakage protection-6

Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing Self-reclosing earth leakage switch Self-reclosing earth leakage device References With output contact Class Motor Reconexion Automatica CARGA / LOAD Contacto auxiliar Contacto auxiliar Auxiliary contact

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Self-reclosing overcurrent and earth leakage protection-7

Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing Earth leakage relay + contactor Earth leakage relay with built-in transformer Description }} Self-reclosing electronic earth leakage protection relay with built-in transformer, a diameter of Ø 25 or Ø 35 mm (depending on the type), with earth leakage trigger }} is connected to a contactor or similar It element as a circuit breaker }} Type A relay, with high-frequency current filtering and high immunity. Monitoring in true root mean square (TRMS) }} Adjustable sensitivity and trigger timer. }} Number...

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Self-reclosing overcurrent and earth leakage protection-8

Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing Earth leakage relay + contactor Earth leakage relay with built-in transformer Switched relay mV ac proportional to the leakage current Switched relay mV ac proportional to the leakage current Remote signaling (outputs) Control of the circuit breaker Time between reclosures (s) Other earth leakage relays Switched relay mV ac proportional to the leakage current Simple relay, NO, positive safety Alarm relay: 1 simple relay NO-SP Alarm relay: 1 simple relay NO (*) The delay is cancelled in all relays...

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