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Chapter 3) 7SR17 Rho Performance Specification
1.2
Energising Quantities
1.2.1
Auxiliary Power Supply
IEC60255-11 & EATS 48-4
Nominal Operating Range
24 to 60 VDC
V
80 to 250 VDC
aux
115 VAC 50/60Hz
*No relay operation outside of this range is permissible or implied.
Burden
1.2.1.1
Attribute
24V DC
60V DC
80V DC
250V DC
115V AC
Chapter 3) Page 8 of 46
Absolute Range*
18 to 72 VDC
64 to 300 VDC
92 to 138 V rms AC
47.5-52.5/57-63Hz
Minimum
User Access (back light)
Maximum
Minimum
User Access (back light)
Maximum
Minimum
User Access (back light)
Maximum
Minimum
User Access (back light)
Maximum
Minimum
User Access (back light)
Maximum
Low voltage PSU suitable for 24VDC,
30VDC,48VDC and 60VDC systems
High Voltage PSU suitable for 115VAC,
110VDC and 220VDC systems.
High Voltage PSU suitable for 115VAC,
110VDC and 220VDC systems.
Value
3.9 W
5.3 W
8.0W
3.9W
5.2 W
7.3W
4.0W
5.5W
6.5W
4.2W
5.4W
7.5W
9VA 0.5PF approx.
10VA 0.5PF approx.
15VA 0.5PF approx.
©2014 Siemens Protection Devices Limited
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