Description
CT secondary rated: 1 A /5 A mixed input supported
System frequency: 50 Hz /60 Hz
Differential operate time: ≤ 15 ms for internal busbar fault
Auxiliary supply: 80‑250 V DC / 85‑265 V AC
Power consumption: ≤45 W whole device
Communication interfaces: Ethernet(IEC61850), RS485, optical communication optional
Fault disturbance recording: Multiple‑cycle waveform storage, event log storage capacity >2000 records
Mounting mode: 19‑inch standard cabinet rack‑mount
Operating temperature: −25 ℃ ~ +70 ℃
Storage temperature: −40 ℃ ~ +85 ℃
Humidity: 5‑95 %RH non‑condensing
EMC compliance: IEC 60255‑22‑1 /‑22‑2 /‑22‑3
Certifications: CE, UL, IEC 61850, IEC 60255 standards approval
Core function: busbar low‑impedance differential protection with restraint characteristic. Built‑in zone selection logic, breaker failure protection, overcurrent backup protection, voltage monitoring functions. Collect breaker and disconnector auxiliary status via binary input modules, output trip commands via binary output relays. Real‑time electrical measurement, fault waveform recording, sequence‑of‑event logging. Parameter configuration and diagnosis via PCM600 engineering tool; local HMI for status display and manual operation. Complete hardware self‑diagnosis, fault alarm uploading to station control system.
19‑inch standard rack‑mount installation in substation protection cabinet. Wire CT circuits strictly follow polarity requirements, avoid open‑circuit risk of current transformer secondary side. Auxiliary power supply shall match rated voltage range. After hardware replacement, download complete project configuration, perform protection logic test, CT polarity check, trip‑loop action test. Verify IEC 61850 communication with station control system.
High‑voltage and extra‑high‑voltage substations, power plant main‑bus protection. Applicable for single‑bus, double‑bus, double‑breaker, one‑and‑a‑half‑breaker primary‑wiring schemes, widely used in power grid and heavy‑industry power‑supply secondary protection systems.
- Relion 670 series professional busbar‑differential‑protection IED, low‑impedance differential algorithm, fast fault tripping speed.
- Support mixed 1A/5A CT input, no requirement for intermediate CT, reduce site transformation workload.
- Modular hot‑swap hardware design, convenient for on‑site maintenance and spare‑part replacement.
- Rich built‑in functions: zone selection, breaker‑failure protection, backup overcurrent, disturbance recording and event logging.
- Native IEC 61850 communication support, adapt to digital substation construction requirements.
- Industrial spare‑part for maintenance and retrofitting of legacy ABB Relion 670‑series busbar‑protection devices.
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