1 Introduction
26
7UM61 Manual
C53000-G1176-C127-3
Inadvertent Ener-
gizing Protection
• Damage limitation on inadvertent switching on of a stationary generator by fast
opening of the generator switch.
• Instantaneous value acquisition of the phase currents.
• Operational state and voltage supervision as well as fuse failure monitor are the
enable criteria.
Threshold Supervi-
sions
• 6 freely assignable indications for threshold supervision.
• Implementation of fast supervision tasks with CFC.
Temperature Detec-
tion by Thermobox-
es
• Acquisition of any ambient temperatures or coolant temperatures using thermobox-
es and external temperature sensors.
Phase Sequence In-
version
• Selectable L1, L2, L3 or L1, L3, L2 via setting (static) or binary input (dynamic).
User-Defined Func-
tions
• 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 charac-
teristic 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 inter-
face (using a PC with DIGSI
®
).
• Feedback information on circuit breakers states via the breaker auxiliary contacts.
• Plausibility monitoring of the circuit breaker positions and interlocking conditions for
switching.
Measured Values
Monitoring
• Increased reliability thanks to monitoring of internal measuring circuits, of auxiliary
power supply, and of hardware and software.
• Current transformer and voltage transformer secondary circuits are monitored
using symmetry checks.
• Trip circuit monitoring possible via external circuitry.
• Phase sequence check.
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