Protection - GE 469 Instruction Manual

2.2.3

Protection

2–8
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
Max ratings for 100000 operations:
DC
RESISTIVE
DC
INDUCTIVE L/
R=40ms
AC
RESISTIVE
AC
INDUCTIVE
P.F.=0.4
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
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
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
30 A for 0.2 s
VOLTAGE BREAK
30 V 10 A
125 V 0.5 A
250 V 0.3 A
30 V 5 A
125 V 0.25 A
250 V 0.15 A
120 V 10 A
250 V 10 A
120 V 4 A
250 V 3 A
/ I if I > FLA
2 1 avg
I / I × I / FLA if I
2 1 avg avg
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 2: INTRODUCTION
MAX.
LOAD
300 Ω
62.5 Ω
75 Ω
150 Ω
31.3 Ω
37.5 Ω
2770 VA
2770 VA
480 VA
750 VA
< FLA