The SIPROTEC 7RW80 unit is a numerical protection device that can perform control and monitoring functions and therefore provide the user with a cost-effective platform for power system management, that ensures reliable supply of electrical power to the customers. The ergonomic design makes control easy from the relay front panel. A large, easyto-read display was a key design factor.

Control

The integrated control function permits control of disconnect devices, grounding switches or circuit-breakers through the integrated operator panel, binary inputs, DIGSI 4 or the control or automation system (e.g. SICAM)

Programmable logic

The integrated logic characteristics (CFC) allow the user to add own functions for automation of switchgear (e.g. interlocking) or switching sequence. The user can also generate
user-defined messages. This functionality can form the base to create extremely flexible transfer schemes.

Operational measured value

Extensive measured values (e.g. I, V), metered values (e.g. Wp, Wq) and limit values (e.g. for voltage, frequency) provide improved system management.

Operational indication

Event logs, trip logs, fault records and statistics documents are stored in the relay to provide the user or operator with all the key data required to operate modern substations.

Line protection

For the enhancement of the feeder protection the 7RW80 provides several stages for voltage and frequency protection.

Generator and transformer protection

Through implemented voltage, frequency and overexcitation protection the SIPROTEC 7RW80 can be used for generators and transformers in case of defective voltage or frequency control, full load rejection or operation in islanding generation systems.

System decoupling and load shedding

For system decoupling and load shedding the SIPROTEC 7RW80 provides voltage, frequency, rate-of-frequencychange and rate-of-voltage-change protection.

Load restoration

For power system recovery, frequency protection and load restoration are available in SIPROTEC 7RW80.

Switchgear cubicles for high/medium voltage

All units are designed specifically to meet the requirements of high /medium-voltage applications. In general, no separate measuring instruments (e.g., for current, voltage, frequency,…) or additional control components are necessary.