Data Capture; Control - GE Multilin 345 Instruction Manual

SPECIFICATIONS

Data capture

Control

1–12
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
Data: ......................................................................... AC input channels
Data storage:........................................................ RAM - battery backed-up
FAULT RECORDER
Number of records:............................................ 1
Content:................................................................... Date and Time, first cause of fault, phases,
EVENT RECORDER
Number of events:.............................................. 256
Header:.................................................................... relay name, order code, firmware revision
Content:................................................................... event number, date of event, cause of event,per-phase
Data Storage:........................................................ RAM - battery backed up; retained for 3 days
CLOCK
Setup: ....................................................................... Date and time
IRIG-B: ...................................................................... Auto-detect (DC shift or Amplitude Modulated)
Accuracy with IRIG-B:....................................... ± 1 ms
Accuracy without IRIG-B:................................± 1 min / month
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
Contact Input
Virtual Input
Logic Element
Element Pickup/Trip/Dropout/Alarm
Contact input state
Contact output state
Virtual input state
Logic element state
Currents: Ia, Ib, Ib, Ig/Isg, In - magnitudes and angles
Voltages: Van, Vbn, Vcn, Vab, Vbc, Vca, Vaux - magnitudes
and angles
System frequency
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
Daylight Saving Time
Amplitude modulated: 1 to 10 V pk-pk
DC shift: 1 to 10 V DC
Input impedance: 40 kOhm ± 10%
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION