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Breaker Failure
Protection
Inadvertent
Energization
DC Voltage/DC
Current Protection
Analog Outputs
Threshold
Supervision
Temperature
Detection Using
Thermoboxes
Phase Rotation
Changing
User-Defined
Functions
7UM62 Manual
C53000-G1176-C149-3
• Different prolongation of cool-down time constants for rest/operation period is taken
into consideration;
• Disabling of the start inhibit is possible if an emergency start-up is required.
• Breaker failure condition determined by current flow after a trip signal has been
issued, or the breaker position indication (binary input) can be evaluated;
• Breaker failure protection initiated by the tripping of any integrated protective
element that trips the circuit breaker (internal start);
• Initiation possible through a binary input from an external protective device
(external start).
• The inadvertent accidental energizing protection serves to limit damages by
accidental connection of the standing generator by a fast actuation of the generator
breaker;
• Evaluation of negative sequence component of the three phase currents;
• Released by operational condition check, undervoltage supervision, and fuse
failure monitor.
• DC voltage detection via integrated isolating amplifier (measuring transducer);
• Suited for measurement of small DC currents;
• Can be set for overvoltage (overcurrent) or undervoltage (undercurrent);
• Optional average value or true r.m.s. value formation; the latter is suited to AC
voltage measurement.
• Output of up to four analog operational measured values (depending on the variant
ordered).
• 6 freely assignable indications for threshold supervision;
• Realization of fast supervision tasks with CFC.
• Detection of any ambient or coolant temperature using external thermoboxes and
external temperature detectors (RTDs).
• Selectable L1, L2, L3 or L1, L3, L2 with a setting (static) or binary input (dynamic).
• Internal and external signals can be logically combined to establish user-defined
logic functions;
• All common logic functions are available for programming (AND, OR, NOT,
Exclusive OR, etc.);
• Time delays and limit value inquiries are available;
• Processing of measured values, including zero suppression, adding a knee
characteristic for a transducer input, and live-zero monitoring.
1.3 Features
11
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