ABB RET 54 Series Technical Reference Manual, General page 92

RET 54_
92
Transformer Terminal
Technical Reference Manual, General
Table 5.2.1-4 RTD/analog inputs
Supported RTD sensors
Max lead resistance
(three-wire measurement)
Accuracy
Isolation
Sampling frequency
Response time
RTD / Resistance sensing
current
Current input impedance
Table 5.2.1-5 Signal outputs
Max system voltage
Continuous carry
Make and carry for 0.5 s
Make and carry for 3 s
Breaking capacity when control circuit time-
constant L/R <40 ms, at 48/110/220 V DC
Table 5.2.1-6 Power outputs
Max system voltage
Continuous carry
Make and carry for 0.5 s
Make and carry for 3 s
Breaking capacity when control circuit time
constant L/R <40 ms, at 48 V DC
110 V DC
220 V DC
Minimum contact load
TCS (Trip Circuit Control voltage range
Supervision)
Current drain through
the supervision circuit
Minimum voltage
(threshold) over a
contact
1) two contacts in series
Table 5.2.1-7 Analog outputs
Output range 0...20 mA
0.5% of full scale
Accuracy
600 
Max load
Isolation 2 kV (output to output, output to inputs and output to protective earth)


Response time 85 ms
100 Platinum TCR 0.00385 (DIN 43760)
250 Platinum
TCR 0.00385
1000  Platinum
TCR 0.00385
100 Nickel
TCR 0.00618 (DIN 43760)
120  Nickel
TCR 0.00618
250 Nickel
TCR 0.00618
1000 Nickel
TCR 0.00618
10  Copper
TCR 0.00427
120  Nickel
TCR 0.00672 (MIL-T-24388C)
200  per lead
 0.5% of full scale
 1.0% of full scale for 10 Copper RTD
2 kV (inputs to outputs and inputs to protective earth)
5 Hz
Filter time + 30 ms (430 ms...5.03 s)
max 4.2 mA RMS
6.2 mA RMS for 10  Copper
274   0.1%
250 V AC/DC
5 A
10 A
8 A
1 A/0.25 A/0.15 A
250 V AC/DC
5 A
30 A
15 A
1)
5A
1)
3A
1)
1A
100 mA, 24 V AC/DC (2.4 VA)
20...265 V AC/DC
approx. 1.5 mA (0.99...1.72 mA)
20 V AC/DC (15...20 V)
1MRS755225