17.3 Energizing inputs
Table 553: TRM — Energizing quantities, rated values and limits for transformer inputs
Description
Value
Frequency
Rated frequency f
r
50 or 60 Hz
Operating range f
r
± 10%
Current inputs
Rated current I
r
0.1 or 0.5 A
1)
1 or 5 A
2)
Operating range 0 – 50 A 0 – 500 A
Thermal withstand 100 A for 1 s
500 A for 1 s
*)
20 A for 10 s 100 A for 10 s
8 A for 1 min 40 A for 1 min
4 A continuously 20 A continuously
Dynamic withstand 250 A one half wave 1250 A one half wave
Burden < 1 mVA at I
r
= 0.1 A < 10 mVA at I
r
= 1 A
< 20 mVA at I
r
= 0.5 A < 200 mVA at I
r
= 5 A
*)
max. 350 A for 1 s when COMBITEST test switch is included.
Voltage inputs
**)
Rated voltage V
r
100 or 220 V
Operating range 0 – 420 V
Thermal withstand 450 V for 10 s
420 V continuously
Burden < 50 mVA at 100 V
< 200 mVA at 220 V
**)
all values for individual voltage inputs
Note! All current and voltage data are specified as RMS values at rated frequency
1) Residual current
2) Phase currents or residual current
Section 17 1MRK 511 287-UUS A
Technical data
646
Technical manual
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