SR469 SPECIFICATIONS 1. INTRODUCTION
1-4
1.3
SR469 SPECIFICATIONS
POWER SUPPLY
Options: LO / HI (must be specified when ordering)
Range: LO: DC: 20 to 60 Vdc
AC: 20 to 48 Vac @ 48 to 62 Hz
HI: DC: 90 to 300 Vdc
AC: 70 to 265 Vac @ 48 to 62 Hz
Power: 45 VA (max), 25VA typical
Proper operation time without supply voltage: 30 ms
PHASE CURRENT INPUTS
CT Primary: 1-5000 A
CT Secondary: 1 A or 5 A (must be specified with order)
Burden: Less than 0.2 VA at rated load
Conversion Range: 0.05-20 x CT
Accuracy: at < 2 x CT: ± 0.5% of 2 x CT
at
≥
2 x CT: ± 1% of 20 x CT
CT Withstand: 1 second @ 80 times rated current
2 seconds @ 40 times rated current
continuous @ 3 times rated current
GROUND CURRENT INPUTS
CT Primary: 1-5000 A
CT Secondary: 1 A or 5 A (setpoint)
Burden: Less than 0.2 VA at rated load for 1A or 5A
Less than 0.25 VA for 50:0.025 @ 25A
Conversion Range: 0.02-1 x CT primary Amps
Accuracy: ± 0.5% of 1xCT for 5A
± 0.5% of 5xCT for 1A
± 0.125 A for 50:0.025
CT Withstand: 1 second @ 80 times rated current
2 seconds @ 40 times rated current
continuous @ 3 times rated current
DIFFERENTIAL PHASE CURRENT INPUTS
CT Primary: 1-5000A
CT Secondary: 1 A or 5 A (setpoint)
Burden: Less than 0.2 VA at rated load
Conversion Range: 0.02-1 x CT
Accuracy: ± 0.5% of 1xCT for 5A
± 0.5% of 5xCT for 1A
CT Withstand: 1 second @ 80 times rated current
2 seconds @ 40 times rated current
continuous @ 3 times rated current
VOLTAGE INPUTS
VT Ratio: 1.00-150.00:1 in steps of 0.01
VT Secondary: 273 Vac (Full Scale)
Conversion Range: 0.05-1.00 x Full Scale
Accuracy: ± 0.5% of Full Scale
Max. Continuous: 280 Vac
Burden: > 500 k
Ω
DIGITAL INPUTS
Inputs: 9 opto-isolated inputs
External Switch: dry contact < 800
Ω
, or
open collector NPN transistor from sensor
6 mA sinking from internal 4K
Ω
pullup @ 24Vdc
with Vce < 4Vdc
SR469 Sensor Supply: +24Vdc @ 20 mA Max.
RTD INPUTS
RTDs: 3 wire type 100
Ω
Platinum (DIN.43760)
100
Ω
Nickel
120
Ω
Nickel
10
Ω
Copper
RTD Sensing Current: 5mA
Isolation: 36 Vpk (Isolated with Analog Inputs and Outputs)
Range: -50 to +250
o
C
Accuracy: ± 2
o
C
Lead Resistance: 25
Ω
Max per lead for Pt and Ni type
3
Ω
Max per lead for Cu type
No Sensor: >1000
Ω
Short/Low Alarm: < -50
o
C
TRIP COIL SUPERVISION
Applicable Voltage: 20-300 Vdc / Vac
Trickle Current: 2-5mA
ANALOG CURRENT INPUTS
Current Inputs: 0-1 mA, 0-20mA or 4-20 mA (setpoint)
Input Impedance: 226
Ω
+/-10%
Conversion Range: 0-21 mA
Accuracy: +/- 1% of full scale
Type: passive
Analog Input Supply: +24VDC @ 100mA max.
Response Time:
≤
100 ms
COMMUNICATIONS PORTS
RS232 Port: 1, Front Panel, non-isolated
RS485 Ports: 2, Isolated together @ 36Vpk
Baud Rates: RS485: 300,1200,2400,4800,9600,19200
RS232: 9600
Parity: None, Odd, Even
Protocol: Modbus
RTU / half duplex
ANALOG CURRENT OUTPUT
Type: Active
Range: 4-20 mA, 0-1 mA (must be specified with order)
Accuracy: +/- 1% of full scale
4-20 mA maximum load:1200
Ω
0-1mA maximum load: 10 k
Ω
Isolation: 36 Vpk (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 # 1-12
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
OUTPUT RELAYS
Configuration: 6 Electo-Mechanical Form C
Contact Material: silver alloy
Operate Time: 10ms
Max Ratings for 100000 operations
VOLTAGE MAKE/CARRY
CONTINUOUS
MAKE/CARRY
0.2s
BREAK MAXIMUM
LOAD
DC 30Vdc 10A 30A 10A 300W
RESISTIVE 125Vdc 10A 30A 0.5A 62.5W
250Vdc 10A 30A 0.3A 75W
DC 30Vdc 10A 30A 5A 150W
INDUCTIVE 125Vdc 10A 30A 0.25A 31.3W
L/R=40ms 250Vdc 10A 30A 0.15A 37.5W
AC 120Vac 10A 30A 10A 2770VA
RESISTIVE 250Vac 10A 30A 10A 2770VA
AC 120Vac 10A 30A 4A 480VA
INDUCTIVE 250Vac 10A 30A 3A 750VA
P.F.=0.4
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
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