7SR105 Rho Description of Operation
©2018 Siemens Protection Devices Chapter 1 Page 40 of 57
4.3 Phase Reversal (46 PH REV)
Gn 46 PH REV Setting
is the ratio of NPS:PPS current. A high value indicates incorrect current phase rotation.
This can be used to prevent inadvertent reverse operation of the motor.
Gn 46 PH REV Setting
sets the NPS:PPS current percentage pick-up.
An output is given after elapse of the
Gn 46 PH REV Delay
setting.
Operation of the phase reversal elements can be inhibited from:
Gn 46 PH REV U/C Guarded
Operation of the undercurrent guard function
Inhibit 46 PH REV
A binary or virtual input.
<
<
&
<
<
&
Inhibit 46PHREV
&
Enabled
Gn 46 PH REV
Element
Yes
Gn 46 PH REV U/C
Guarded
Gn 46 PH REV U/C
Guard Setting
I
A
I
B
I
C
Gn 46 PH REV
Setting
En
Gn 46 PH REV
Delay
46 PH Rev
Figure 4-3 Logic Diagram: Phase Reversal Detection (46 PH REV)
Summary of Contents for 7SR105 Rho
Page 1: ...Answers for energy 7SR105 Rho User Manual Motor Protection Relay Reyrolle Protection Devices ...
Page 2: ...Siemens Protection Devices 2 ...
Page 95: ...7SR105 Rho Technical Manual Chapter 4 Page 2 of 70 2018 Siemens Protection Devices ...
Page 99: ...7SR105 Rho Technical Manual Chapter 4 Page 6 of 70 2018 Siemens Protection Devices ...
Page 127: ...7SR105 Rho Technical Manual Chapter 4 Page 34 of 70 2018 Siemens Protection Devices ...
Page 153: ...7SR105 Rho Technical Manual Chapter 4 Page 60 of 70 2018 Siemens Protection Devices ...
Page 155: ...7SR105 Rho Technical Manual Chapter 4 Page 62 of 70 2018 Siemens Protection Devices ...
Page 157: ...7SR105 Rho Technical Manual Chapter 4 Page 64 of 70 2018 Siemens Protection Devices ...