Specifications

7SR242 Duobias Performance Specification
©2010 Siemens Protection Devices Limited Chapter 3 - Page 7 of 45
1.2.3 AC Voltage
Nominal Operating Range
Vn
40 to 160 V Up to 270 V
fn
50, 60Hz 47 to 62Hz
1.2.3.1 Burden
Attribute Value
AC Burden  0.01 VA at 110 V
1.2.4 Binary (Digital) Outputs
Contact rating to IEC 60255-0-2
Attribute Value
Carry continuously 5A AC or DC
for 0.5 s 20A AC or DC
Make and carry
(L/R d 40 ms and V d 300 V)
for 0.2 s 30A AC or DC
AC resistive 1250 VA
AC inductive
250 VA at p.f. d 0.4
DC resistive 75 W
Break
( d 5 A and d 300 V)
DC inductive
30 W at L/R d 40ms
50 W at L/R d 10ms
Contact Operate / Release Time 7ms / 3ms
Minimum number of operations 1000 at maximum load
Minimum recommended load 0.5 W at minimum of 10mA or 5V