are still isolated and the IED is in test mode. Before removing the test handle, checkthe measured values in the IED.Not until the test handle is completely removed, the trip and alarm circuits are restoredfor operation.Verify that the contact sockets have been crimped correctly and thatthey are fully inserted by tugging on the wires. Never do this withcurrent circuits in service.Current circuit1. Verify that the contacts are of current circuit type.2. Verify that the short circuit jumpers are located in the correct slots.Voltage circuit1. Verify that the contacts are of voltage circuit type.2. Check that no short circuit jumpers are located in the slots dedicated for voltage.Trip and alarm circuits1. Check that the correct types of contacts are used.4.11 Checking the binary input/output circuits M11722-2 v4Do not insert anything else to the female connector but thecorresponding male connector. Inserting anything else (such as ameasurement probe) may damage the female connector and prevent aproper electrical contact between the printed circuit board and theexternal wiring connected to the screw terminal block.4.11.1 Binary input circuits M11722-4 v3Preferably, disconnect the binary input connector from the binary input cards. Checkall connected signals so that both input level and polarity are in accordance with theIED specifications.Section 4 1MRK 502 073-UUS AStarting up56 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062Commissioning manual
