ABB Relion 620 Series - Rtd;Ma Inputs

14.6 RTD/mA inputs
Table 1090: RTD/mA inputs
Description Value
RTD inputs Supported RTD sensors
100 Ω platinum
250 Ω platinum
100 Ω nickel
120 Ω nickel
250 Ω nickel
10 Ω copper
TCR 0.00385 (DIN 43760)
TCR 0.00385
TCR 0.00618 (DIN 43760)
TCR 0.00618
TCR 0.00618
TCR 0.00427
Supported resistance range 0...2 kΩ
Maximum lead resistance
(three-wire measurement) 25 Ω per lead
Isolation
2 kV (inputs to protective earth)
Response time <4 s
RTD/resistance sensing cur-
rent Maximum 0.33 mA rms
Operation accuracy Resistance Temperature
± 2.0% or ±1 Ω
±1°C
10 Ω copper: ±2°C
mA inputs Supported current range 0…20 mA
Current input impedance 44 Ω ± 0.1%
Operation accuracy ±0.5% or ±0.01 mA
1MRS757644 H Technical data
620 series
Technical Manual
1197