Chapter 3) 7SR242 Duobias Performance Specification
©2015 Siemens Protection Devices Limited
Chapter 3 Page 13 of 50
1.3 Functional Performance
1.3.1 Instrumentation
Instrument Value
Reference
Typical accuracy
I
Current
0.1In to 2.0In
1 % or 1 %
In
V
Voltage
0.1Vn to 1.2Vn
1 % or 1 %
Vn
1.3.2 Data Communication
1.3.2.1
USB Data Communication Interface
Attribute
Value
Physical layer
Electrical
Connectors
USB-Type B
1.3.2.2
Fibre optic Data Communication Interface (Optional Rear Mounted Port COM3 / COM4)
Attribute
Value
Physical layer
Fibre-optic
Connectors
ST
TM
(BFOC/2.5)
Recommended fibre
62.5/125 m glass fibre with ST connector
Optical wavelength
820nm
Launch power (into recommended fibre)
-16 dBm
Receiver sensitivity
-24 dBm
1.3.2.3
RS485 Data Communication Interface (Standard Rear Port)
Attribute
Value
Physical layer
Electrical
Connectors
4mm Ring Crimp
1.3.2.4
RS485 Data Communication Interface (Optional Rear Mounted Port COM3)
Attribute
Value
Physical layer
Electrical
Connectors
4-way Plug
1.3.2.5
RS232 Data Communication Interface (Optional Rear Mounted Port COM3))
Attribute
Value
Physical layer
Electrical
Connectors
9-way D-plug
Summary of Contents for 7SR242 Duobias
Page 1: ...Answers for energy 7SR242 Duobias Transformer Protection Relay Reyrolle Protection Devices ...
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Page 6: ...6 www siemens com energy ...
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