1. INTRODUCTION SR469 SPECIFICATIONS
1-5
OVERLOAD / STALL PROTECTION / THERMAL MODEL
Overload Curves: 15 Standard Overload Curves
Custom Curve
Voltage Dependent Custom Curve, for High Inertia Starting
(all curves time out against average phase current)
Curve Biasing: Phase Unbalance
Hot/Cold Curve Ratio
Stator RTD
Running Cool rate
Stopped Cool Rate
Line Voltage
Overload Pickup: 1.01 - 1.25 (for service factor)
Pickup Accuracy: as per Phase Current Inputs
Timing Accuracy: ±100ms or ± 2 % of total time
Elements: Trip and Alarm
PHASE SHORT CIRCUIT
Pick-up Level: 4.0 - 20.0 x CT primary in steps of 0.1
of any one phase
Time Delay: 0 - 1000 ms in steps of 10
Pickup Accuracy: as per Phase Current Inputs
Timing Accuracy: +50ms
Elements: Trip
MECHANICAL JAM
Pick-up Level: 1.01 - 3.00 x CT primary in steps of 0.01
of any one phase, blocked on start
Time Delay: 1-30 s in steps of 1
Pickup Accuracy: as per Phase Current Inputs
Timing Accuracy: ±0.5 s or ± 0.5 % of total time
Elements: Trip
UNDERCURRENT
Pick-up Level: 0.10 - 0.95 x CT primary in steps of 0.01
of any one phase
Time Delay: 1 - 60 s in steps of 1
Block From Start: 0 - 15000 s in steps of 1
Pickup Accuracy: as per Phase Current Inputs
Timing Accuracy: ±0.5 s or ± 0.5 % of total time
Elements: Trip and Alarm
CURRENT UNBALANCE
Unbalance: I
2
/I
1
if Iavg>FLA
I
2
/I
1
x Iavg/FLA if Iavg<FLA
Range: 0-100 % UB in steps of 1
Pick-up Level: 4 - 40 % UB in steps of 1,
Time Delay: 1 - 60 s in steps of 1
Pickup Accuracy: ±2%
Timing Accuracy: ±0.5 s or ± 0.5 % of total time
Elements: Trip and Alarm
GROUND INSTANTANEOUS
Pick-up Level: 0.1 - 1.0 x CT primary in steps of 0.01
Time Delay: 0 - 1000 ms in steps of 10
Pickup Accuracy: as per Ground Current Input
Timing Accuracy: +50ms
Elements: Trip and Alarm
PHASE DIFFERENTIAL INSTANTANEOUS
Pick-up Level: 0.05 - 1.0 x CT primary in steps of 0.01
of any one phase
Time Delay: 0 - 1000 ms in steps of 10
Pickup Accuracy: as per Phase Differential Current Inputs
Timing Accuracy: +50ms
Elements: Trip
ACCELERATION TIMER
Pickup: transition of no phase current to > overload pickup
Dropout: when current falls below overload pickup
Time Delay: 1.0 - 250.0 s in steps of 0.1
Timing Accuracy: ±100ms or ± 0.5 % of total time
Elements: Trip
JOGGING BLOCK
Starts/Hour: 1 - 5 in steps of 1
Time Between Starts: 1 - 500 min.
Timing Accuracy: ±0.5 s or ± 0.5 % of total time
Elements: Block
RESTART BLOCK
Time Delay: 1 - 50000 s in steps of 1
Timing Accuracy: ±0.5 s or ± 0.5 % of total time
Elements: Block
RTD
Pickup: 1 - 250
O
C in steps of 1
Pickup Hysteresis: 2
O
C
Time Delay: 3 s
Elements: Trip and Alarm
UNDERVOLTAGE
Pick-up Level: Motor Starting: 0.60 - 0.99x Rated in steps of 0.01
Motor Running: 0.60 - 0.99x Rated in steps of 0.01
of any one phase
Time Delay: 0.1 - 60.0 s in steps of 0.1
Pickup Accuracy: as per Voltage Inputs
Timing Accuracy: <100 ms or ± 0.5 % of total time
Elements: Trip and Alarm
OVERVOLTAGE
Pick-up Level: 1.01 - 1.10x Rated in steps of 0.01
of any one phase
Time Delay: 0.1 - 60.0 s in steps of 0.1
Pickup Accuracy: as per Voltage Inputs
Timing Accuracy: ±100ms or ± 0.5 % of total time
Elements: Trip and Alarm
VOLTAGE PHASE REVERSAL
Configuration: ABC or ACB phase rotation
Timing Accuracy: 500 - 700 ms
Elements: Trip
FREQUENCY
Required Voltage: > 30% of full scale in Phase A
Overfrequency Pickup: 25.01 - 70.00 in steps of 0.01
Underfrequency Pickup:20.00 - 60.00 in steps of 0.01
Accuracy: ± 0.02 Hz
Time Delay: 0.1 - 60.0 s in steps of 0.1
Timing Accuracy: <100ms or ± 0.5 % of total time
Elements: Trip and Alarm
REDUCED VOLTAGE START
Transition Level: 25 - 300 % FLA in steps of 1
Transition Time: 1 - 250 s in steps of 1
Transition Control: Current, Timer, Current and Timer
REMOTE SWITCH
Configurable: Assignable to Digital Inputs1- 4
Timing Accuracy: 100ms max.
Elements: Trip and Alarm
SPEED SWITCH
Configurable: Assignable to Digital Inputs1- 4
Time Delay: 1.0 - 250.0 s in steps of 0.1
Timing Accuracy: 100ms max.
Elements: Trip
LOAD SHED
Configurable: Assignable to Digital Inputs1- 4
Timing Accuracy: 100ms max.
Elements: Trip
PRESSURE SWITCH
Configurable: Assignable to Digital Inputs1- 4
Time Delay: 0.1 - 100.0 s in steps of 0.1
Block From Start: 0 - 5000 s in steps of 1
Timing Accuracy: ±100 ms or ± 0.5 % of total time
Elements: Trip and Alarm
VIBRATION SWITCH
Configurable: Assignable to Digital Inputs1- 4
Time Delay: 0.1 - 100.0 s in steps of 0.1
Timing Accuracy: ±100 ms or ± 0.5 % of total time
Elements: Trip and Alarm
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