Siemens Solkor 7PG2113 Technical Manual page 244

Phase Is DTL
(Amps) (sec)
REF
It is also desirable to check the operating voltage achieved with the setting resistor and all parallel CTs connected
but de-energised. A higher capacity test set will be required for this test. Adequate current must be supplied to
provide the magnetising current of all connected CTs. Precautions should be taken to ensure that no personnel
are at risk of contact with any of the energised secondary wiring during the test.
Settings Data Voltage Setting
To complete testing of the REF requires primary injection through the phase and residual (REF) CT in series to
simulate an out of zone fault and ensure stability of the relay. The test can then be repeated with the REF CT
secondary connections reversed to prove operation.
2.10.1.1 Element Blocking
The Restricted Earth Fault element can be blocked by Binary Input Inhibit. This functionality should be checked.
Element
Check correct indication, trip output, alarm contacts, waveform record.
Check that any shorting links are removed after testing.
©2012 Siemens Protection Devices Limited
P.U. Current
Amps
Table 2.10-2
Table 2.10-3 64H Operating Voltage
64H
Table 2.10-4
7PG2113/4/5/6 Commissioning & Maintenance
Tolerance Operate Time
2 x Is
64H Results
Measured
BI Inhibits
64H Inhibit
Tolerance
Chapter 6 Page 46 of 77