Recording; User-Programmable Elements - GE 845 Instruction Manual

CHAPTER 1: INTRODUCTION

Recording

User-Programmable Elements

845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
TAP CHANGER FAILURE
Operating Parameter:.......................................Tap Changer Position
Time Delay: ............................................................0.00 to 600.00 s
Timer Accuracy:...................................................±3% of delay setting or ±2 cycles (whichever is greater) from
TRANSIENT RECORDER
Default AC Channels:.........................................12 currents + 4 voltages
Configurable Channels: ...................................16 analog and 32 digital channels
Sampling Rate:.....................................................128/c, 64/c, 32/c, 16/c, 8/c
Trigger Source:.....................................................Any element pickup, dropout or operate, digital input or
Trigger Position:...................................................0 to 100%
Storage Capability:.............................................Non-volatile memory
DATA LOGGER
Data Logger channels: .....................................16
Data Logger Rate: ..............................................1 cycle, 1 sec., 30 sec., 1 min., 15 min., 30 min., 1 hour
Inputs:.......................................................................Any analog parameter from the list of available analog
Data Collection Mode: ......................................Continuous, Triggered
Trigger Source:.....................................................Any digital flag from the list of digital flags
Trigger Position:...................................................0 to 50% in steps of 1%
Channel 1(16) Mode:..........................................Sample, Min, Max, Mean
EVENT RECORDER
Number of events:..............................................1024
Header: ....................................................................relay name, order code, firmware revision
Content:...................................................................any element pickup, any element operate, digital input
Data Storage:........................................................non-volatile memory
Time-tag Accuracy: ...........................................to one microsecond
FLEXLOGIC
Lines of code:........................................................1024
Supported operations: .....................................NOT, XOR, OR (2 to 16 inputs), AND (2 to 16 inputs), NOR (2 to
Inputs:.......................................................................any logical variable, contact, or virtual input
Number of timers:............................................... 32
Pickup delay: .........................................................0 to 60000 (ms, sec., min.) in steps of 1
Dropout delay:......................................................0 to 60000 (ms, sec., min.) in steps of 1
Timer accuracy:................................................... ±3% of delay setting or ±¼ cycle (whichever is greater) from
pickup to operate
output change of state, FlexLogic operand
parameters
change of state, digital output change of state, self-test
events
16 inputs), NAND (2 to 16 inputs), latch (reset-dominant),
edge detectors, timers
pickup to operate
SPECIFICATIONS
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