ABB RELION REX640 Technical Manual page 1742

Section 14
Technical data
1736
Table 1492: RTD/mA inputs and mA outputs
Description
RTD inputs Supported RTD
sensors
Supported resistance
range
Maximum lead
resistance (three-wire
measurement)
Isolation
Response time
RTD/resistance
sensing current
Operation accuracy
mA inputs Supported current
range
Current input
impedance
Operation accuracy
mA outputs Supported current
range
Maximum loop
impedance
Operation accuracy
Table 1493: Signal outputs and IRF output
Description
Rated voltage
Maximum continuous burden (resistive load, AC)
Continuous contact carry
Make and carry for 3.0 s
Make and carry 0.5 s
Breaking capacity when the control-circuit time
constant L/R<40 ms, at 48/110/220 V DC
Minimum contact load
Value
TCR 0.00385 (DIN
43760)
100 Ω platinum TCR 0.00385
250 Ω platinum TCR 0.00618 (DIN
100 Ω nickel 43760)
120 Ω nickel TCR 0.00618
250 Ω nickel TCR 0.00618
0...4 kΩ
100 Ω per lead
2 kV (inputs to protective earth)
<1 s
<1 mA rms
Resistance Temperature
± 2.0% or ±1 Ω ±1°C
±0...20 mA
44 Ω ±0.1%
±0.5% or ±0.01 mA
±0...20 mA
700 Ω
±0.1 mA
Value
250 V AC/DC
1250 VA
5 A
10 A
15 A
1 A/0.25 A/0.15 A
10 mA at 5 V AC/DC
1MRS759142 C
REX640
Technical Manual