REF601CE446BB1NH ABB DCS feeder protection relay

• Brand
  ABB
• Model
  REF601CE446BB1NH
• Product Name
  Compact Numerical Feeder Protection and Control Relay
• Country of Origin
  Finland
• HS Code
  85364900
• Dimensions
  406mm×76mm×152mm
• Weight
  2.1kg
• Operating Temperature
  -25°C to +70°C
• Storage Temperature
  -40°C to +85°C
• Power Supply
• Warranty
  12 month
• Product Status
  New and original

ABB REF601CE446BB1NH Product Introduction and Technical Specifications

Electrical Input & Output Parameters

Auxiliary Power Supply Input: Wide universal power supply range of 24V to 265V AC/DC, compatible with various industrial power supply modes, with strong voltage fluctuation tolerance

Rated Frequency: 50Hz/60Hz auto-sensing, automatically adapting to different regional power grid frequency standards

Current Input Specification: Support site-selectable 1A or 5A CT secondary current input, matching mainstream power transformer parameters

Signal Input: Configurable multi-channel binary digital input, collecting on-site breaker status, switch position and auxiliary signal information

Control Output: Programmable relay contact output, supporting circuit breaker tripping, closing and fault alarm signal output, with reliable load driving capability

Protection Action Speed: ≤20ms instantaneous overcurrent protection response time, ultra-fast fault isolation; arc protection response time up to 3ms with optical fiber sensor configuration

Communication Interface: Built-in RS485 interface, supporting Modbus RTU, IEC 60870-5-103 and IEC 61850 multiple mainstream communication protocols

Data Sampling Performance: 4kHz high sampling rate, supporting 128-cycle fault waveform recording for accurate fault data analysis

Product Characteristics

This ABB numerical protection relay has outstanding industrial power-grade characteristics. It adopts high-precision digital sampling chips and industrial-grade components, with high measurement accuracy and stable long-term operation performance. The built-in multi-level electromagnetic shielding design can resist strong electromagnetic interference in substation and industrial power distribution environments, effectively avoiding protection misoperation and signal distortion. It supports adaptive power grid frequency and CT parameter selection, with strong on-site adaptability. The compact modular integrated structure realizes high integration of protection, monitoring and communication functions, saving switchgear installation space. It complies with international IEC and ANSI power industry standards, with standardized protection algorithms and reliable action logic. The whole machine has excellent aging resistance and vibration resistance, supporting 24-hour uninterrupted continuous operation of power distribution systems, and features intelligent signal filtering and data calibration functions to ensure the authenticity and accuracy of monitoring data.

Product Advantages

In terms of performance advantages, the ultra-fast fault response speed minimizes power fault impact range and power outage time, greatly improving power supply reliability. Diversified standard protection characteristics and flexible programmable logic meet the personalized protection demands of different distribution network structures. High-precision sampling and fault recording functions provide complete data support for power grid operation analysis and fault troubleshooting. In terms of application advantages, the ultra-wide universal AC/DC power supply design eliminates power supply matching restrictions and adapts to various on-site power supply conditions. Multiple mainstream communication protocols ensure seamless docking with SCADA, substation automation and remote monitoring systems, with strong system compatibility. Pre-configured default functions simplify on-site commissioning steps and shorten project debugging cycle. In terms of cost advantages, the highly integrated multi-function design replaces multiple single-function protection devices, reducing overall system procurement cost. The low failure rate and long service life reduce later maintenance, calibration and equipment replacement costs, improving the long-term economic operation benefit of power distribution systems.

Application Cases & Scenarios

The ABB REF601CE446BB1NH protection relay is widely used in medium and low-voltage power distribution protection and control scenarios across various industries. In power industry, it is applied to urban and rural distribution substations, serving as core protection equipment for overhead lines, cable feeders and distribution transformers to ensure safe and stable operation of public power grids. In industrial manufacturing fields such as petrochemical, metallurgy and mining, it protects factory internal power distribution feeders and high-power electrical equipment, preventing equipment damage and production shutdown caused by power faults. In new energy industry, it is deployed in photovoltaic power stations and wind power distribution systems, realizing protection and monitoring of distributed power generation feeders. In public infrastructure fields including commercial buildings, airports and subway systems, it provides reliable power safety protection for public power distribution systems. In addition, it is also applicable to industrial parks, water treatment plants and other scenarios requiring high-reliability power distribution protection, being a mainstream compact intelligent protection device for modern intelligent power distribution systems.

Core Functions

The ABB REF601CE446BB1NH relay integrates comprehensive power protection, monitoring and control core functions to meet full-scenario distribution network operation demands. It provides complete overcurrent protection, earth fault protection, thermal overload protection, overvoltage and undervoltage protection, as well as frequency abnormal protection, covering all common feeder power faults to realize rapid fault identification and isolation. It supports multiple standard inverse-time protection characteristics including NI, VI, EI and LI, which can be flexibly matched according to power grid operation modes to optimize protection coordination. Equipped with cold-load pick-up function, it effectively stabilizes the re-energization process of distribution feeders and avoids protection misoperation. The device integrates real-time power parameter monitoring, accurately collecting and calculating voltage, current, power and frequency data of the power grid. It has powerful fault recording and event logging functions, automatically recording fault waveforms, action time and operation events to support post-fault analysis and system optimization. In addition, it supports local HMI manual configuration and remote online parameter debugging, with flexible programmable logic and timer functions, realizing personalized protection scheme setting and intelligent linkage control of power distribution equipment.