GE Multilin 850

1–26 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS CHAPTER 1: INTRODUCTION
FLEXELEMENTS
Number of elements:........................................8
Operating signal: ................................................Any analog actual value, or two values in a differential mode
Operating signal mode:...................................Signed, or Absolute value
Operating mode:.................................................Level, Delta
Comparison direction:......................................Over, Under
Pickup Level: .........................................................-30.000 to 30.000 pu in steps of 0.001 pu
Hysteresis: .............................................................0.1 to 50.0% in steps of 0.1%
Delta dt:...................................................................40 msec to 45 days
Pickup and dropout delays:...........................0.000 to 6000.000 s in steps of 0.001 s
FLEXSTATES
Number of States: ..............................................256 logical variables grouped under 16 Modbus addresses
Programmability:................................................Any FlexLogic operand, any digital input, any virtual input,
any remote input
NON-VOLATILE LATCHES
Type:.........................................................................Set-dominant or Reset-dominant
Range:......................................................................16 individually programmed
Output:.....................................................................Stored in non-volatile memory
Execution sequence:.........................................As input prior to protection, control and FlexLogic
FLEXCURVES
Number: ..................................................................4 (A through D)
Reset points:..........................................................40 (0.00 to 0.98 x pickup)
Operate points:....................................................80 (1.03 to 20.0 x pickup)
Time delay:............................................................ 0 to 200,000,000 ms in steps of 1 ms
Saturation level: ..................................................20 times the pickup level
TAB PUSHBUTTONS
Number of elements:........................................1 (20 Tab Pushbuttons)
Data Storage:........................................................Non-volatile memory
Mode:........................................................................Self-reset, latched
Display Message:................................................2 lines; 15 characters per line
Dropout Timer:.....................................................0.000 to 60.000 s in steps of 0.005
Auto-reset Timer:................................................0.2 to 600.0 s in steps of 0.1
Hold Timer:............................................................0.1 to 10.0 s in steps of 0.1
Timer Accuracy:..................................................±3% of delay setting or ±¼ cycle (whichever is greater) from
pickup to operate
USER-PROGRAMMABLE LEDS
Number: ..................................................................17 (14 + 3 PB LEDS) for Membrane and Rugged Front Panels
Programmability:................................................any logic variable, contact, or virtual input
Reset mode: .......................................................... self-reset or latched
USER-PROGRAMMABLE PUSHBUTTONS
Number of pushbuttons:................................. 3 (Membrane and Rugged Front Panels)
Mode:........................................................................Self-reset, latched
Display message: ...............................................2 lines of 13 characters on each line
Dropout timer:......................................................0.000 to 60.000 s in steps of 0.005
Auto-reset timer:.................................................0.2 to 600.0 s in steps of 0.1
Hold timer: ............................................................. 0.0 to 10.0 s in steps of 0.1
Metering
RMS PARAMETERS
Currents
Parameters:...........................................................Phase A, B, C, Neutral, Ground
Accuracy: ...............................................................± 0.25% of reading or ± 0.2% of rated (whichever is greater)
from 0.1 to 2.0 x CT
± 1% of reading > 2.0 x CT