RET620 变压器保护测控装置

Description

RET620 变压器保护测控装置

RET620 变压器保护测控装置

Specialized transformer protection devices for protecting, controlling, measuring and monitoring power transformers and booster transformers, including generator transformer sets in power systems and industrial distribution systems

RET620 transformer protection measurement and control device constitutes differential main protection of double-winding power transformer and power generator transformer group. The RET620 also includes an optional automatic voltage regulation function and in-line tap-changer. The RET620 is also suitable for transformers of all Y-Δ connections with single or double buses with one or two circuit breakers and multiple switch switches. The device supports a wide range of manual and electric disconnecting switches and ground switches. The number of controllable devices depends on the input and output requirements of other applications. The amount of available I/O is increased according to the needs of ABB’s RIO600 remote I/O device.

The RET620 transformer protection measurement and control device features support for the substation IEC61850 communication standard, which covers vertical and horizontal communication, including GOOSE messages with switching signals and analog signals, as well as setting values based on IEC 61850-8-1. The device also supports DNP3, IEC 60870-5-103, and Modbus® protocols. Through PRP or HSR protocols, the RET620 provides an optional Ethernet interface for redundant Ethernet without delay or a self-healing RSTP ring network communication in the event of a communication failure. The solution eliminates the effects of a single point of failure and improves communication reliability. Applicable to Ethernet-based IEC 61850, Modbus® and DNP3 protocols.

The RET620 transformer protection measurement and control device is a member of the 620 series of ABB’s Relion® product family.

Major advantage
A relay protection unit integrates protection, control, measurement and monitoring functions
Provides comprehensive protection and control functions for double-winding transformers
With pre-configured standard configurations, you can also quickly and easily meet different application requirements through functional configuration
Pluggable design for quick installation and testing
Large LCD display with editable single line charts, accessible locally or via an easy-to-use HMI based Web browser
Thoughtful product life cycle service

Main characteristics
Comprehensive transformer protection control features for dual winding transformers, including advanced fast differential protection with inrush current braking
Supports a variety of neutral ground modes, with high impedance or low impedance limited ground fault principle
Optional transformer automatic on-load voltage regulation function
Optional arc protection
IEC61850 1st and 2nd editions are supported, including redundant HSR and PRP, GOOSE and IEC61850-9-2
Supports Modbus, DNP3, IEC 60870-5-103 communication protocols and different time synchronization methods, including IEEE 1588 v2 Precision Time protocol