Product Model: REF610C11HCHN
Brand: ABB
Product Type: Feeder Protection Relay (REx 6xx Platform)
Product Variant: This suffix specifies a fully configured hardware and software package for a specific application.
Core Standard Specifications (Base REF610 Model):
Supply Voltage: 24-250 VDC / 48-250 VAC
Operating Temperature: -40°C to +70°C
Protection Functions: Three-phase and ground-fault overcurrent (50/51, 50N/51N), directional ground-fault (67N), two-step under/overvoltage (27/59), thermal overload (49), breaker failure (50BF), four-shot auto-reclosing (79).
Control & Metering: Programmable logic (CFC), sequence of events (SOE), disturbance recorder, measurement of I, V, P, Q, PF, energy.
Communications: Two ports: 1x RS-485 (Modbus RTU) and 1x optional (Ethernet, PROFIBUS DP, IEC 61850).
Standards: IEC 60255, IEEE C37.90, IEC 61000-4.
Product Configuration Breakdown (Based on Suffix)
The suffix REF610C11HCHN defines this specific variant:
C: Standard 19" 1/3 rack mounting case.
11: Standard power supply range (e.g., 24-250 VDC/48-250 VAC).
H: Hardware configuration, typically indicating a specific set of binary inputs/outputs (e.g., 6 inputs / 4 outputs).
C: Communication option, here likely indicating the standard dual-port configuration (RS-485 + optional slot).
H: HMI type, specifying a high-resolution, backlit graphical display.
N: Application software variant, denoting the High-Set Neutral Overcurrent (HS-NOC) protection feature. This is a specialized function for applications like resistance-grounded or Petersen coil systems, where fast clearing of high-magnitude ground faults is critical while maintaining selectivity for low-current faults.
This relay is a comprehensive feeder management device designed for protection, control, and monitoring of utility and industrial distribution feeders, with a specific focus on systems requiring sensitive and selective ground-fault protection.
Core Adaptation Scenarios
Scenario 1: Ground-Fault Protection in Resistance-Grounded Industrial Networks
A large industrial plant (e.g., petrochemical, mining) with a medium-voltage resistance-grounded distribution system experiences an arcing ground fault. The fault current is intentionally limited to a low value (e.g., 25-400A) by the neutral grounding resistor to reduce damage, but it must still be cleared quickly to prevent escalation.
Adaptation Solution: The REF610C11HCHN, with its HS-NOC (High-Set Neutral Overcurrent) function, is ideally suited. It can be set with a sensitive, time-delayed pickup for the nominal resistor current to detect and alarm on incipient faults, while the "High-Set" element provides an instantaneous trip for high-magnitude faults (e.g., if the fault evolves or bypasses the resistor). This provides both selectivity and speed, enhancing safety and limiting equipment damage, a standard application in paper mill and oil refinery substations.
Scenario 2: Upgrading Legacy Protection on a Critical Plant Incomer Feeder
A manufacturing facility's main incoming 10kV feeder is protected by old electromechanical overcurrent relays. They offer no ground-fault directional logic, no auto-reclosing, and no communication for SCADA integration, making fault location slow and coordination with utility protection difficult.
Adaptation Solution: Replacing the old relays with the REF610C11HCHN provides modern digital protection, including directional ground-fault (67N) to correctly identify faulted feeders, four-shot auto-reclosing (79) to restore power after transient faults, and Modbus communication for full integration into the plant's energy management system. This upgrade at a data center substation improved fault clearance time by 70% and provided complete visibility into feeder performance.
Service Guarantee and Support
Warranty Service: This protection relay is supplied with a comprehensive 12-month warranty. It is guaranteed to be fully functional and configured to its specified order code, including the HS-NOC software feature.
Technical Support: Our protection specialists offer dedicated support:
Application Engineering: Assistance in applying the HS-NOC function and coordinating settings with your system's grounding design.
Configuration & Integration: Support for setting the relay via PCM600 software, and integration into SCADA/control systems via Modbus or other protocols.
Documentation: Provision of the 1MRK 511 306-BEN technical manual and application guides.
Reducing Decision-Making Concerns: We verify that the hardware configuration (H) matches your required I/O count and that the specialized N software is appropriate for your system's grounding type, ensuring a perfect fit for your technical requirements.
Related Product Recommendations
ABB PCM600 Software: The configuration and setting tool for all ABB REx 6xx relays.
Test Equipment: Primary or secondary injection test set for commissioning and periodic testing of the protection scheme.
Communication Modules: Optional plug-in communication cards for Ethernet (REC601) or other protocols if not pre-equipped.
Mimic Display: An optional HMI201 graphical mimic display for enhanced local visualization.
If you need to verify the specific I/O configuration or discuss the application of the HS-NOC feature for your system, please contact us immediately.
● Contact Information:
* WhatsApp: [https://wa.me/+86 19389860630](https://wa.me/+86 19389860630)
* Email: hnjlyori@163.com
