ABB REG650 ANSI, Руководство по вводу в эксплуатацию

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Correct possible errors before continuing to test the circuitry.
Test the circuitry.
• Polarity check
• VT circuit voltage measurement (primary injection test)
• Earthing check
• Phase relationship
• Insulation resistance check
The polarity check verifies the integrity of circuits and the phase relationships. The
check must be performed as close to the IED as possible.
The primary injection test verifies the VT ratio and the wiring all the way from the
primary system to the IED. Injection must be performed for each phase-to-neutral
circuit and each phase-to-phase pair. In each case, voltages in all phases and neutral
are measured.
3.9 Using the RTXP test switch
The RTXP test switch is designed to provide the means of safe testing of the IED. This
is achieved by the electromechanical design of the test switch and test plug handle.
When the test plug handle is inserted, it first blocks the trip and alarm circuits then it
short circuits the CT secondary circuit and opens the VT secondary circuits making
the IED available for secondary injection.
When pulled out, the test handle is mechanically stopped in half withdrawn position.
In this position, the current and voltage enter the protection, but the alarm and trip
circuits are still isolated. Before removing the test handle, check that no trip or alarms
are present in the IED.
Not until the test handle is completely removed, the trip and alarm circuits are restored
for operation.
Verify that the contact sockets have been crimped correctly and that
they are fully inserted by tugging on the wires. Never do this with
current circuits in service.
Current circuit
1. Verify that the contacts are of current circuit type.
2. Verify that the short circuit jumpers are located in the correct slots.
Voltage circuit
Section 3
1MRK 502 049-UEN A
Starting up
30
Commissioning manual