7Pg2114 & 7Pg2116 - Siemens Solkor 7PG2113 Technical Manual

3.3.2 7PG2114 & 7PG2116
Voltage Inputs:
Current Inputs:
Disable:
Map Pickup LED:
The presence of NPS current without NPS voltage is used to indicate a current transformer failure.
Apply normal 3P balanced current with a crossover of any two phases at a level above 60CTS Inps setting.
Measure the delay to operation.
Apply 3P balanced voltage with a similar phase crossover to the current. Increase the applied 3P voltage until the
CTS element resets.
Reduce the 3P voltage to cause CTS operation again. Gradually reduce the 3P current until the element resets.
Setting
60CTS Delay
60CTS Inps
60CTS Vnps
©2012 Siemens Protection Devices Limited
Figure 3.3-2 Current Transformer Supervision 7PG2114/6
V (V ), V (V ), V
L1 A L2 B
I (I ), I (I ), I (I
L1 A L2 B L3
51N, 46IT, 46DT, 46BC
60CTS - Self Reset
Table 3.3-2 7SR12 60CTS Test Results
7PG2113/4/5/6 Commissioning & Maintenance
(V )
L3 C
)
C
Measured
Chapter 6 Page 65 of 77