ABB RET 54 Series - Page 92

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