Chapter 3) 7SR242 Duobias Performance Specification
©2015 Siemens Protection Devices Limited
Chapter 3 Page 8 of 50
1.2 Energising Quantities
1.2.1 Auxiliary Power Supply
1.2.1.1
Rating
Nominal
Operating Range
V
AUX
30, 48, 110, 220 VDC
24 to 290 VDC
1.2.1.2
Burden
Battery loading can be estimated from the following approximate figures:
Attribute
Watts
30V 48V 110V 220V
Quiescent Relay (inc. ‘PROT HEALTHY’ LED)
6.0 5.7 5.0 4.9
Backlight
1.3 1.3 1.3 1.3
LED - Red or Green)
Each LED
0.04 0.04 0.04 0.04
LED – Yellow
Each LED
0.08 0.08 0.08 0.08
Binary Output
Each
Output 0.25 0.25 0.25 0.25
Optional F.O. / RS485 / RS232
Data Comms Interface
1.0 1.0 1.0 1.0
Optional IEC 61850 Comms Interface
2.0 2.0 2.0 2.0
Summary of Contents for 7SR242 Duobias
Page 1: ...Answers for energy 7SR242 Duobias Transformer Protection Relay Reyrolle Protection Devices ...
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