GE D90 Plus - Page 29

CHAPTER 2: PRODUCT DESCRIPTION SPECIFICATIONS
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 19
AUXILIARY OVERVOLTAGE
Pickup level:...........................................................0.000 to 1.100 pu in steps of 0.001
Dropout level:........................................................<98% of pickup
Level accuracy:....................................................±0.5% of reading from 10 to 208 V
Pickup delay: .........................................................0.00 to 600.00 seconds in steps of 0.01
Reset delay: ...........................................................0.00 to 600.00 seconds in steps of 0.01
Timing accuracy: ................................................±3% of operate time or ±4 ms (whichever is greater)
Operate time:........................................................<2 cycles at 1.10 × pickup at 60 Hz
AUXILIARY UNDERVOLTAGE
Pickup level:...........................................................0.000 to 1.100 pu in steps of 0.001
Dropout level:........................................................>102% of pickup
Level accuracy:....................................................±0.5% of reading from 10 to 208 V
Curve shapes:.......................................................GE IAV inverse, definite time
Curve multiplier: ..................................................0.00 to 600.00 in steps of 0.01
Timing accuracy: ................................................±3% of operate time or ±4 ms (whichever is greater)
BREAKER FAILURE
Mode:........................................................................single-pole, three-pole
Current supervision: ..........................................phase current, neutral current
Supervision pickup:............................................0.001 to 30.000 pu in steps of 0.001
Supervision dropout:.........................................<98% of pickup
Supervision accuracy at 0.1 to 2.0 × CT:..±2% of rated
Supervision accuracy at >2.0 × CT: ............±2.5% of reading
Time accuracy: ....................................................±3% or 4 ms (whichever is greater)
BREAKER FLASHOVER
Operating quantity:............................................phase current, voltage, and voltage difference
Pickup level voltage:..........................................0.000 to 1.500 pu in steps of 0.001
Dropout level voltage:.......................................97 to 98% of pickup
Pickup level current: ..........................................0.000 to 1.500 pu in steps of 0.001
Dropout level current:.......................................97 to 98% of pickup
Level accuracy:....................................................±0.5% or ±0.1% of rated (whichever is greater)
Pickup delay: .........................................................0.000 to 65.535 seconds in steps of 0.001
Time accuracy: ....................................................±3% or ±42 ms (whichever is greater)
Operate time:........................................................<42 ms at 1.10 × pickup at 60 Hz
CONTACT INPUTS
Input rating:...........................................................300 V DC maximum
On threshold:.........................................................70% of nominal voltage setting or 20 V (whichever is greater)
Off threshold: ........................................................30% of nominal voltage setting or 15 V (whichever is greater)
Bounce threshold:...............................................50% of nominal voltage setting or 20 V (whichever is greater)
AZ threshold:.........................................................80% of nominal voltage setting
Overvoltage threshold:.....................................130% of nominal voltage setting or 285 V maximum
Maximum current:..............................................10 mA during turn on, 0.5 mA steady-state
Nominal voltage:.................................................24 to 250 V
Input impedance:................................................active
Recognition time:................................................<1 ms
Debounce timer:..................................................1.50 to 16.00 ms in steps of 0.25
Chatter detection timer: ..................................1 to 100 seconds
Chatter state changes: ....................................10 to 100
DISTURBANCE DETECTOR (50DD)
Type:..........................................................................sensitive current disturbance detector
Range: ......................................................................0.004 to 0.04 pu (twice the current cut-off level threshold)