1-6
469 Motor Management Relay
GE Power Management
1.2 SPECIFICATIONS
1 INTRODUCTION
1
ANALOG CURRENT OUTPUT
Type:
Active
Range:
4 to 20 mA, 0 to 1 mA
(must be specified with order)
Accuracy:
±1% of full scale
4 to 20 mA maximum load: 1200
Ω
0 to 1 mA maximum load: 10 k
Ω
Isolation:
36 V
pk
(Isolated with RTDs and Analog Inputs)
4 Assignable Outputs:
phase A current
phase B current
phase C current
3 phase average current
ground current
phase AN (AB) voltage
phase BN (BC) voltage
phase CN (CA) voltage
3 phase average voltage
hottest stator RTD
hottest bearing RTD
hottest other RTD
RTD # 1 to 12
Power factor
3 phase Real power (kW)
3 phase Apparent power (kVA)
3 phase Reactive power (kvar)
Thermal Capacity Used
Relay Lockout Time
Current Demand
kvar Demand
kW Demand
kVA Demand
Motor Load
Torque
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 to 1.25 (for service factor)
Pickup Accuracy: as per Phase Current Inputs
Timing Accuracy: ±100 ms or ±2% of total time
Elements:
Trip and Alarm
OUTPUT RELAYS
Configuration:
6 Electromechanical Form C
Contact Material: silver alloy
Operate Time:
10 ms
Max ratings for 100000 operations:
TERMINALS
Low Voltage (A, B, C, D terminals): 12 AWG max.
High Voltage (E, F, G, H terminals): #8 ring lug, 10 AWG
wire standard
PHASE SHORT CIRCUIT
Pickup Level:
4.0 to 20.0
×
CT primary in steps of 0.1
of any one phase
Time Delay:
0 to 1000 ms in steps of 10
Pickup Accuracy: as per Phase Current Inputs
Timing Accuracy: +50 ms
Elements:
Trip
MECHANICAL JAM
Pickup Level:
1.01 to 3.00
×
FLA in steps of 0.01 of any
one phase, blocked on start
Time Delay:
1 to 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
Pickup Level:
0.10 to 0.95
×
CT primary in steps of
0.01 of any one phase
Time Delay:
1 to 60 s in steps of 1
Block From Start: 0 to 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
VOLTAGE
MAKE/CARRY
BREAK
MAX.
LOAD
CONTINUOUS
0.2s
DC
RESISTIVE
30 V
10 A
30 A
10 A
300 W
125 V
10 A
30 A
0.5 A
62.5 W
250 V
10 A
30 A
0.3 A
75 W
DC
INDUCTIVE
L/R=40ms
30 V
10 A
30 A
5 A
150 W
125 V
10 A
30 A
0.25 A
31.3 W
250 V
10 A
30 A
0.15 A
37.5 W
AC
RESISTIVE
120 V
10 A
30 A
10 A
2770 VA
250 V
10 A
30 A
10 A
2770 VA
AC
INDUCTIVE
P.F.=0.4
120 V
10 A
30 A
4 A
480 VA
250 V
10 A
30 A
3 A
750 VA
Содержание MOTOR MANAGEMENT RELAY 469
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