Siemens SIPROTEC 4 7VE61 User Manual

Undervoltage Protection 27
•
Two-stage undervoltage measurement for one of the 6 input voltages of the device
•
Separated tripping delay time
•
Settable drop-off to pickup for both stages
Overvoltage Protection 59
•
Two-stage overvoltage measurement for one of the 6 input voltages of the device
•
Separated tripping delay time
•
Settable drop-off to pickup for both stages
Frequency Protection 81 O/U
•
Monitoring on undershooting (f<) and/or overshooting (f>) with 4 frequency limits and delay times that
are independently adjustable
•
Insensitive to harmonics and abrupt phase angle changes
•
Settable undervoltage threshold.
Frequency Change Protection
•
Monitors whether the frequency overshoots (df/dt>) and/or undershoots (-df/dt<) a set limit value, with 4
individually settable limit values or delay times
•
Variable measuring windows
•
Coupling to frequency protection pickup
•
Settable undervoltage threshold.
Vector Jump
•
Sensitive phase jump detection to be used for network disconnection.
Analog Outputs
•
Output of up to four analog operational measured values (depending on the variant ordered).
Threshold Value Monitoring
•
6 freely assignable messages for threshold monitoring
•
Implementation of fast monitoring tasks via CFC.
User-defined Functions
•
Internal and external signals can be logically combined to establish user-defined logic functions
•
All common logic functions (AND, OR, NOT, Exclusive OR, etc.)
•
Time delays and limit value interrogations
•
Processing of measured values, including zero suppression, adding a knee characteristic for a transducer
input, and live-zero monitoring.
Breaker Control
•
Circuit breakers can be opened and closed manually via programmable function keys, via the system
interface (e.g. by SICAM or LSA), or via the operating interface (using a PC with DIGSI)
•
Feedback information on circuit breakers states via the breaker auxiliary contacts
•
Plausibility monitoring of the circuit breaker position and monitoring of interlocking conditions for
switching operations.
Introduction
1.3 Characteristics
22 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017

Siemens SIPROTEC 4 7VE61 Specifications

General

Brand	Siemens
Model	SIPROTEC 4 7VE61
Category	Power distribution unit
Language	English