Relé Falta e Sequência de Fase - KRFSF14N - 220-380V 50/60HZ c/neutro - Kayama

Technical Description

The Kayama KRFSF14N Phase Failure and Phase Sequence Relay with Neutral is an electronic device designed for monitoring three-phase electrical systems with neutral, assisting in detecting unsuitable conditions related to phase presence and phase order.

The model has a stated voltage range of 220 to 380 VAC, frequency of 50/60 Hz, and is intended for systems using a neutral conductor.

Technical Characteristics

• Brand: Kayama
• Model: KRFSF14N
• Type: Phase failure and phase sequence relay
• Configuration: with neutral
• Stated voltage: 220–380 VAC
• Frequency: 50/60 Hz
• Monitored system: three-phase with neutral
• Main functions: phase failure and phase sequence monitoring
• Purpose: monitoring and protection of compatible three-phase electrical systems

Neutral Version

The stated difference of the KRFSF14N is its neutral connection configuration.

This must be taken into account when designing and wiring the installation.

The electrical diagram for the exact model should always be followed.

Phase Failure Monitoring

Phase failure can affect motors and other three-phase loads, causing reduced torque, overheating, poor performance or process interruption.

The KRFSF14N can form part of the control logic used to prevent or interrupt operation under an unsuitable phase condition.

Phase Sequence Monitoring

Incorrect phase sequence can reverse the rotation direction of three-phase motors.

The KRFSF14N can assist with monitoring this condition before equipment operation.

Three-Phase Motor Applications

The relay may be incorporated into motor enable and protection logic where phase presence and sequence are important.

Dedicated motor protection devices remain necessary.

Pumps, Compressors and Fans

Pumps, compressors, fans and exhaust systems may depend on correct motor rotation.

The relay can assist with supply monitoring before these loads are enabled.

Use with Contactors

The KRFSF14N can operate within the control circuit of a properly sized contactor.

The relay performs monitoring while the contactor handles power switching.

Complementary Protection

The KRFSF14N does not replace circuit breakers, fuses, overload relays, short-circuit protection, surge protection or other devices required by the electrical design.

220–380 VAC / 50–60 Hz

The product is stated for 220–380 VAC and 50/60 Hz systems.

Compatibility with the actual network and wiring configuration must be confirmed before installation.

Installation

Installation should be performed by qualified personnel.

Before energizing, verify:

• three-phase supply;
• neutral conductor;
• system voltage;
• network frequency;
• phase identification;
• phase sequence;
• control circuit;
• protection devices;
• exact product wiring diagram.

Safety

Disconnect the circuit and confirm absence of voltage before installation or maintenance.

The KRFSF14N should not be used alone as a functional safety device.

Registration Information

• Brand: Kayama
• Model: KRFSF14N
• Voltage: 220–380 VAC
• Frequency: 50/60 Hz
• Configuration: with neutral
• Type: Phase failure and phase sequence relay

Kayama Quality

The Kayama KRFSF14N Phase Failure and Phase Sequence Relay with Neutral is part of Kayama's range of components for monitoring and protection of three-phase electrical systems.