Table of Contents
Advertisement
1 Introduction
1.3
Characteristics
General Features
• Powerful 32-bit microprocessor system
• Complete digital processing of measured values and control, from the sampling of
• complete galvanic and reliable separation between the internal processing circuits
• Suited for lines with 2 ends, even with transformers in the protected zone (order
• simple device operation using the integrated operator panel or a connected person-
• storage of fault messages as well as instantaneous values for fault recording
Differential
• Differential protection system for 2 ends with digital protection data transmission
Protection
• Protection for all types of short-circuits in systems with any starpoint conditioning
• Reliable differentiation between load and fault conditions also in high-resistant,
• High sensitivity in case of weakly loaded system, extreme stability against load
• Phase segregated measurement ensures that the pickup sensitivity is independent
• Suited for transformers in the protected zone (order variant)
• Detection of high-resistant, weak-current faults due to high sensitivity of the protec-
• Insensitive against inrush and charging currents – also for transformers in the pro-
• High stability also for different current transformer saturation
• Adaptive stabilisation that is automatically derived from the measured quantities
• Fast, phase segregated tripping also on weak or zero infeed ends (breaker intertrip)
• low frequency dependency
• Digital protection data transmission; communication between devices via dedicated
• Communication possible via a single copper wire pair (typically 15 km, max. 30 km,
• Synchronization via GPS possible. resulting in automatic correction of transmission
• Permanent monitoring of the protection data transmission concerning disturbance,
• Phase segregated tripping possible (for operation with single-pole or single-and
22
the analog input values, the processing and organization of the communication
between devices up to the closing and tripping commands to the circuit breakers
from the measurement, control, and power supply circuits by analogue input trans-
ducers, binary inputs and outputs and the DC/DC or AC voltage converters
option)
al computer with operator guidance
current-weak faults by adaptive measuring procedures
jumps and power swings
of the fault type
tive functions
tected zone – and against higher-frequency switching transients
and the configured current transformer data
communication links (in general optical fibre) or a communication system
depending on used cable type)
time differences thus increasing once more the sensitivity
failure or transfer time deviations in the transmission network with automatic trans-
fer time correction
three-pole auto-reclosure) (order variant)
7SD610 Manual
C53000-G1176-C145-4
Advertisement
Table of Contents
