RET650 1MRK008516-BA Transformer protection device

The RET650 1MRK008516-BA is a transformer protection device belonging to ABB’s Relion 650 family. The device provides fast and selective protection, monitoring and control for two – and three-winding transformers, autotransformers, generator transformer groups and shunt reactors. It is designed to operate correctly over a wide frequency range to accommodate changes in the frequency of the power system during disturbances and generator start-up and shutdown. The device has very low requirements for the main current transformer (CT), so no additional CT is required.
The RET650 offers a variety of protection features, including differential protection, impedance protection, current protection, voltage protection, frequency protection, and secondary system monitoring. The differential protection feature with built-in transformer ratio matching and winding bank compensation is ideal for demanding applications.
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Description

Overview

Essential details：RET650 1MRK008516-BA Transformer protection device

Product Description

The RET650 1MRK008516-BA is a transformer protection device belonging to ABB’s Relion 650 family. The device provides fast and selective protection, monitoring and control for two – and three-winding transformers, autotransformers, generator transformer groups and shunt reactors. It is designed to operate correctly over a wide frequency range to accommodate changes in the frequency of the power system during disturbances and generator start-up and shutdown. The device has very low requirements for the main current transformer (CT), so no additional CT is required.
The RET650 offers a variety of protection features, including differential protection, impedance protection, current protection, voltage protection, frequency protection, and secondary system monitoring. The differential protection feature with built-in transformer ratio matching and winding bank compensation is ideal for demanding applications. In addition, it provides low impedance limited ground fault protection as a complement to sensitive and fast primary protection against winding ground faults.
The device also has a variety of backup protection functions, such as instantaneous phase overcurrent protection, four-step overcurrent protection, thermal overload protection, overexcitation protection, over/under voltage protection. In addition, the RET650 has built-in disturbance and event recorders, which provide users with important data for disturbance analysis after a failure.

RET650

Product parameter

The parameter information of RET650 1MRK008516-BA transformer protection device is quite extensive, including but not limited to the following aspects:
Protection function:
Differential protection (T2WPDIF and T3WPDIF) : Suitable for two – and three-winding transformers.
Low impedance Limited Ground Fault Protection (REFPDIF).
High impedance differential protection (HZPDIF).
Impedance protection, including power swing detection (ZMRPSB), underimpedance protection (ZGCPDIS), load intrusion protection (LEPDIS).
Current protection:
Instantaneous phase overcurrent protection (PHPIOC).
Four-step phase overcurrent protection (OC4PTOC).
Instantaneous Residual overcurrent protection (EFPIOC).
Four-step residual overcurrent protection (EF4PTOC).
Voltage protection:
Two-step undervoltage protection (UV2PTUV).
Two-step overvoltage protection (OV2PTOV).
Two-step residual overvoltage protection (ROV2PTOV).
Overexcitation protection (OEXPVPH).
Frequency protection:
Underfrequency protection (SAPTUF).
Rate of Change Protection (SAPLRC).

APPLICATION

The RET650 is designed with future application flexibility in mind, making it ideal for new build and retrofit installations. The unit integrates primary protection and a range of backup protection functions to improve power system performance while reducing hardware engineering, installation time, and space and spare parts requirements.
In addition, the RET650 provides compatibility with a variety of communication protocols, including IEC 61850, DNP3.0, IRIG-B, and EIA-485, ensuring interoperability with other power systems.
When ordering RET650 1MRK008516-BA products, you need to select the right configuration according to the specific application requirements. For example, different power modules, communication and processing modules, analog input modules, and binary input/output modules can be selected. In addition, different protection functions and logic function modules can be selected according to needs to meet specific protection requirements.

Superiority products RET650 1MRK008516-BA Transformer protection device

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