GE Multilin 469, Instruction Manual

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2–8 469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 2: INTRODUCTION
power factor; 3-phase real (kW), apparent (kVA), and
reactive (kvar) power; thermal capacity used; relay
lockout time, current demand; kvar, kW, and kVA demand;
motor load, torque
OUTPUT RELAYS
Relay contacts are unsafe to touch when the 469 is energized! If the output relay
contacts are required for low voltage accessible applications, it is the customer's
responsibility to ensure proper insulation levels.
Configuration: .................................................6 Electromechanical Form C
Contact material: ..........................................silver alloy
Operate time: ..................................................10 ms
Make/carry:.......................................................10 A continuous
30 A for 0.2 s
Max ratings for 100000 operations:
2.2.3 Protection
ACCELERATION TIMER
Pickup: .................................................................transition of no phase current to > overload pickup
Dropout:..............................................................when current falls below overload pickup
Time delay:........................................................1.0 to 250.0 s in steps of 0.1
Timing accuracy: ...........................................±100 ms or ±0.5% of total time
Elements:............................................................Trip
CURRENT UNBALANCE
Unbalance: ........................................................I
2
/ I
1
if I
avg
> FLA
I
2
/ I
1
× I
avg
/ FLA if I
avg
< FLA
Range:..................................................................0 to 100% UB in steps of 1
Pickup level:.......................................................4 to 40% UB in steps of 1
Time delay:........................................................1 to 60 s in steps of 1
Pickup accuracy: ...........................................±2%
Timing accuracy: ...........................................±0.5 s or ± 0.5% of total time
Elements:............................................................Trip and Alarm
FREQUENCY
Req’d voltage: .................................................>30% of full scale in phase A
Overfrequency pickup: ...............................25.01 to 70.00 Hz in steps of 0.01
Underfrequency pickup: ............................20.00 to 60.00 Hz in steps of 0.01
Accuracy:............................................................±0.02 Hz
Time delay:........................................................0.1 to 60.0 s in steps of 0.1
VOLTAGE BREAK MAX.
LOAD
DC
RESISTIVE
30 V 10 A 300 Ω
125 V 0.5 A 62.5 Ω
250 V 0.3 A 75 Ω
DC
INDUCTIVE L/
R=40ms
30 V 5 A 150 Ω
125 V 0.25 A 31.3 Ω
250 V 0.15 A 37.5 Ω
AC
RESISTIVE
120 V 10 A 2770 VA
250 V 10 A 2770 VA
AC
INDUCTIVE
P.F.=0.4
120 V 4 A 480 VA
250 V 3 A 750 VA