ABB UNITROL 1020 - Page 180

Chapter 9 - Technical Data 
172 3BHS335648 E82 UNITROL 1020 User Manual
3~ Phase Input
(2
Accuracy
(4
(-40 to 70 °C / 25 °C)
1% / 0.1%
Continuous current at 40 °C
20 A
Resolution
440 mV rms
Continuous current at 55 °C
15 A / 20 A
(3
Machine Current Measurement
Recommended Excitation Current
Full range current 1A / 5A
2.8 / 13.4 A ac
1~ Phase Input
(2
Nominal current
1 to 5 A ac
Continuous current at 40 °C
12 A / 20 A
(3
Shunt resistor
10 mOhm
Continuous current at 55 °C
10 A / 15 A
(3
Maximum current for 10 s
22 A rms
Maximum current for 1 s
38 A rms
Recommended Excitation Current
Maximum current for 100 ms
54 A rms
DC Input
(2
Common mode range
5 V p
Continuous current at 40 °C
20 A
(3
Accuracy
(4
(-40 to 70 °C / 25 °C)
1% / 0.1%
Continuous current at 55 °C
15 A /20 A
(3
Resolution
0.2% of In
Impedance to Pe (not galvanically
insulated from Pe)
500 Ohm
IGBT with Free Wheeling Diode
Max. forward voltage of integrated
freewheeling diode (25 °C, I
F
= 30 A)
2.6 V
M.a.s.l. >1000m derating factor
Remarks
(1:Start voltage:
Load condition
no load at Vdig
100 mA at Vdig
Ambient
-40 °C
0 °C
-40 °C
0 °C
Input
DC
<0.5
Ohm
Imax <4.0 A
Pmax = 100 W
18 V dc
18 V dc
18 V dc
18 V dc
3 ph
<0.5 Ohm
9 V ac
9 V ac
11 V ac
9 V ac
1ph
<2.0 Ohm
30 V ac
16 V ac
55 V ac
24 V ac
(2: Excitation current can be raised by choosing improved cooling or mounting of an aluminum plate. Temperature
behavior is dependent on input voltage, single, three phase or DC input and its value as well as on the resistance
load of the exciter winding. Max heat sink temperature of 90 °C must not be exceeded. Please contact ABB for
further information.
(3: With external capacitor of 1 mF
Requirements:
Min. Voltage: >=450 V
Temp. Range: -40...85 °C
Oper. lifetime at 85: >5000h
Ripple curr. at 100Hz at 85: >5ª
ESR 20°C 100Hz: <120mOm
Recommended type: Manufacturer Evox Rifa PEH200TO4100M, PEH200YK410TM, PEH169YO4100M
(4: Frequency bandwidth: 10...200 Hz. Define the accuracy up to 150 Hz with 3% and up to 200 Hz with 10%
(5: Voltage measurement shall always be connected over potential transformers (PT’s)
In case Um > 250Vac, the star point of the secondary side must be connected to PE
PT configuration : Three phase (star point connected to PE)  Max nominal value 500Vac
Single phase / Three phase GN  Max nominal value 250Vac