Measured Earth Fault (67/50G,67/51G) - Siemens Solkor 7PG2113 Technical Manual
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2.8
Measured Earth fault (67/50G,67/51G)
Voltage Inputs:
Current Inputs:
Disable:
Map Pickup LED:
Other protection functions may overlap with these functions during testing, it may be useful to disable some
functions to avoid ambiguity. Derived EF, Measured EF, Sensitive EF & Restricted EF protections can be
Enabled/Disabled individually or as groups in the 'Function Config' menu.
Measured EF elements can be separated from Derived EF and Sensitive EF by secondary injection of current
through the I
input circuit only.
4
If any of these elements are defined as directional the correct voltage phase direction will be required to produce
an operation of those elements.
©2012 Siemens Protection Devices Limited
Figure 2.8-1 Measured Earth Fault
V
(V
), V
(V
), V
(V
) for directional elements
L1
A
L2
B
L3
C
I
(I
)
4
G
50CBF, 79
51G-n/50G-n - Self Reset
7PG2113/4/5/6 Commissioning & Maintenance
Chapter 6 Page 37 of 77
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