Technical data
38
Frequency
Item
Standard
Data
Rated system frequency
IEC 60255-1
50 Hz or 60Hz
Internal current transformer
Item
Standard
Data
Rated current I
r
IEC 60255-1
1 or 5 A
Nominal current range
0.05 I
r
to 30 I
r
Nominal current range of sensitive
CT
0.005 to 1 A
Power consumption (per phase)
≤ 0.1 VA at I
r
= 1 A;
≤ 0.5 VA at I
r
= 5 A
≤ 0.5 VA for sensitive CT
Thermal overload capability
IEC 60255-1
IEC 60255-27
100 I
r
for 1 s
4 I
r
continuous
Internal voltage transformer
Item
Standard
Data
Rated voltage V
r
(ph-ph)
IEC 60255-1
100 V /110 V
Nominal range (ph-e)
0.4 V to 120 V
Power consumption at V
r
= 110 V
IEC 60255-27
DL/T 478-2001
≤ 0.1 VA per phase
Thermal
overload
capability
(phase-neutral voltage)
IEC 60255-27
DL/T 478-2001
2 V
r
, for 10s
1.5 V
r
, continuous
Auxiliary voltage
Item
Standard
Data
Rated auxiliary voltage U
aux
IEC60255-1
110 to 250V DC
Permissible tolerance
IEC60255-1
±%20 U
aux
Power consumption at quiescent
state
IEC60255-1
≤ 50 W per power supply module
Power consumption at maximum
load
IEC60255-1
≤ 60 W per power supply module