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345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS
CHAPTER 1: INTRODUCTION
Data capture
TRANSIENT RECORDER
Buffer size: .............................................................3 s
No. of buffers:.......................................................1, 3, 6
No. of channels:...................................................14
Sampling rate:......................................................4, 8, 16, or 32 samples per cycle
Triggers: ..................................................................Manual Command
Contact Input
Virtual Input
Logic Element
Element Pickup/Trip/Dropout/Alarm
Data: .........................................................................AC input channels
Contact input state
Contact output state
Virtual input state
Logic element state
Data storage:........................................................RAM - battery backed-up
FAULT RECORDER
Number of records:............................................1
Content:...................................................................Date and Time, first cause of fault, phases,
Currents: Ia, Ib, Ib, Ig/Isg, In - magnitudes and angles
Voltages: Van, Vbn, Vcn, Vab, Vbc, Vca, Vaux - magnitudes
and angles
System frequency
EVENT RECORDER
Number of events:..............................................256
Header:....................................................................relay name, order code, firmware revision
Content:...................................................................event number, date of event, cause of event,per-phase
current, ground current, sensitive ground current, neutral
current, ground differential current, negative sequence
current, restraint current, per-phase differential current, per-
phase differential second harmonic current, thermal
capacity
Data Storage:........................................................RAM - battery backed up; retained for 3 days
CLOCK
Setup: .......................................................................Date and time
Daylight Saving Time
IRIG-B: ......................................................................Auto-detect (DC shift or Amplitude Modulated)
Amplitude modulated: 1 to 10 V pk-pk
DC shift: 1 to 10 V DC
Input impedance: 40 kOhm ± 10%
Accuracy with IRIG-B:....................................... ± 1 ms
Accuracy without IRIG-B:................................± 1 min / month
Control
LOGIC ELEMENTS
Number of logic elements:.............................16
Trigger source inputs per element: ............2 to 8
Block inputs per element: ...............................2 to 4
Supported operations: .....................................AND, OR, NOR, NAND, XOR, XNOR, Pickup / Dropout timers
Pickup timer: .........................................................0 to 60000 ms in steps of 1 ms
Dropout timer:......................................................0 to 60000 ms in steps of 1 ms
Summary of Contents for 345
Page 89: ...CHAPTER 3 INTERFACES SOFTWARE SETUP 345 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL 3 35 ...
Page 92: ...3 38 345 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL SOFTWARE SETUP CHAPTER 3 INTERFACES ...
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