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350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS
CHAPTER 1: INTRODUCTION
Data capture
TRANSIENT RECORDER
Buffer size: .............................................................3 s
No. of buffers:......................................................1x192, 3x64, 6x32
No. of channels:..................................................14
Sampling rate:......................................................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
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, per-phase voltage (VTs connected in “Wye”), or
phase-phase voltages (VTs connected in “Delta”), system
frequency, power, power factor, thermal capacity
Data Storage: .......................................................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%
RTC Accuracy: ± 1 min / month at 25°C
Control
LOGIC ELEMENTS
Number of logic elements:.............................16
Trigger source inputs per element:............3
Block inputs per element: ...............................3
Supported operations: .....................................AND, OR, NOT, 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
BREAKER CONTROL
Operation: ..............................................................Asserted Contact Input, Logic Element, Virtual Input, Manual
Command
Function:.................................................................Opens / closes the feeder breaker
AUTORECLOSE
Reclose attempts:...............................................Up to 4 shots
Time Delay Accuracy:.......................................0 to 3 cycles (AR Dead Time selected)
Elements:................................................................Inputs, Outputs, Breaker Status (52 status)
