Voltage and Frequency Protection 7RW80 With (2NO)

Microcomputer System :-
Apart from processing the measured values, the microcomputer system (μC) also executes the actual protection
and control functions.

• Filtering and preparation of the measured quantities
• Continuous monitoring of the measured quantities
• Monitoring of the pickup conditions for the individual protective functions
• Interrogation of limit values and sequences in time
• Control of signals for the logic functions
• Output of control commands for switching devices
• Recording of messages, fault data and fault values for analysis
• Management of the operating system and the associated functions such as data recording, real-time
clock, communication, interfaces, etc.
• The information is distributed via output amplifiers (OA).

Binary Inputs and Outputs :-
The computer system obtains external information through the binary input/output boards (inputs and
outputs). The computer system obtains information from the system (e.g remote resetting) or from external
equipment (e.g. blocking commands). These outputs include, in particular, trip commands to circuit breakers
and signals for the remote indication of important events and conditions.

Application Scope :-
The digital voltage and frequency protection SIPROTEC 4 7RW80 is a versatile device designed for protection,
control, and monitoring of transformers, electrical machines and distribution systems. The device can be used for
• System decoupling or for load shedding if ever there is a risk of a system collapse as a result of inadmissibly large frequency drops
• Monitoring voltage and frequency thresholds Voltage, frequency and overexcitation protection can be used to protect generators and transformers in the event of
• Defective voltage control or defective frequency control
• Full load rejection
• Islanding generation systems.

Flexible Protection Functions :-
The flexible protection function is applicable for a variety of protection principles. The user can create up to 20
flexible protection functions and configure them according to their function. Each function can be used either
as an autonomous protection function, as an additional protective element of an existing protection function
or as a universal logic, e.g. for monitoring tasks.