REB 670 1MRK004822-BB | Generator Protection Relay

Description

Main Features and Advantages

The **REB 670 (1MRK004822-BB)** delivers comprehensive generator protection with 24 multi-function protection elements including synchrocheck and loss-of-field capabilities. Its dual redundant CPUs ensure 99.999% availability through simultaneous function execution with cross-check validation. Advanced harmonic restraint algorithms prevent false differential trips during magnetizing inrush, while the high-resolution 1ms time-stamped events capture precise fault sequences. The relay’s unique “adaptive dead-time control” minimizes switching transients during grid reconnection. Key advantages include <30ms decision time for 100% stator ground protection, IEC 61850 Ed.2 certified communications supporting GOOSE messaging, and panoramic waveform recording with 96 cycles of pre-fault data. The local HMI interface offers intuitive disturbance recorder analysis without external tools.

Application Fields

Engineered for mission-critical power generation assets, the **REB 670 (1MRK004822-BB)** protects generators from 1MVA to 600MVA across diverse energy production facilities. Power plants deploy it for conventional steam and gas turbines requiring ANSI 78/40/46/59G compliance. Hydroelectric installations utilize its 0.5-3Hz under-frequency protection for turbine runaway prevention. Offshore wind farms rely on its corrosion resistance and IEC 60255-26 compliance for salt-mist environments. Industrial applications include CHP (Combined Heat and Power) systems requiring reverse power blocking and marine vessels demanding IEC 60945 certified protection. Other key applications include black start generator synchronization, peaker plant rapid response networks, and data center backup power systems requiring 99.9995% availability with automated synchronization checks.

Related Products

Complementary ABB protection relays include the **RET 670** transformer protection system and **REG 670** generator protection with voltage regulation. For smaller generators, the **REL 670** provides compact protection in the same platform. Automation solutions feature **REC 670** bay controllers and **REF 615** feeder protection units. The **RED 670** provides busbar differential protection while the **RES 670** offers breaker management functions. Modern alternatives include the **Relion® 615** series with IEC 61850 SCL configuration tools. Testing solutions include the **OTP 300** test equipment designed specifically for REL/RET/REG/REB relays.

Installation and Maintenance

Installation preparation: Verify CT/VT ratios and burden ratings before wiring the **REB 670 (1MRK004822-BB)**. Use shielded twisted pair cables grounded only at the relay panel for analog inputs. Maintain ≥50mm clearance above/below relay for airflow and avoid direct sunlight exposure. Set correct system frequency (50Hz/60Hz) via front panel before commissioning. Maintenance procedures: Semi-annually perform secondary injection tests with ABB’s **RT 420** test kit to validate protection thresholds. Check firmware versions quarterly via PCM600 software and update following ABB security bulletins. Verify time synchronization via IRIG-B or SNTP annually (±1ms accuracy requirement). For CT saturation testing, inject 20x nominal current to confirm correct linearity.

Product Guarantee

As ABB-certified partners, HONG KONG SAUL ELECTRICAL LIMITED provides 1-year comprehensive warranty on the **REB 670 (1MRK004822-BB)**, covering all hardware and functional performance. Our protection relay specialists offer lifetime technical support including configuration assistance and setting calculations. Emergency replacements ship within 24 hours globally with pre-configured templates matching your protection schema. Calibration services include NIST-traceable reports for metering accuracy. For older generator protection systems, we provide migration engineering services for **REG 216** to **REB 670** upgrades with disturbance record conversion. Commissioning packages include end-to-end functional testing with ABB test protocols.

Please contact Sunny sales@xiongbagk.cn for the best price.

➱ sales manager: Sunny
➱ email mailto: sales@xiongbagk.cn
➱ Skype/WeChat: 18059884797
➱ phone/Whatsapp: + 86 18059884797
➱ QQ: 3095989363
➱ Website:www.sauldcs.com