ABB 615 series Technical Manual page 492

Section 4
Protection functions
486
level and polarity are in accordance with the protection relay specifications. However,
attention must be paid to the electrical safety instructions.
Always check the binary output circuits from the protection relay to the equipment
interface to make sure that all signals are connected correctly. If a particular output needs
to be tested, the corresponding wiring can be disconnected from the terminal of the
protection relay during testing. Check all the connected signals so that both load and
polarity are in accordance with the protection relay specifications. However, attention
must be paid to the electrical safety instructions.
Checking optical connections
Check that the Tx and Rx optical connections are correct.
A relay equipped with optical connections requires a minimum depth of
180 mm (7.2 inches) for plastic fiber cables and 275 mm (10.9 inches) for
glass fiber cables. Check the allowed minimum bending radius from the
optical cable manufacturer.
Applying required settings for the protection relay
Download all calculated settings and measurement transformer parameters in the
protection relay.
Connecting test equipment to the protection relay
Before testing, connect the test equipment according to the protection relay specific
connection diagram.
Pay attention to the correct connection of the input and output current terminals. Check
that the input and output logical signals in the logic diagram for the function under test are
connected to the corresponding binary inputs and outputs of the protection relay. Select
the correct auxiliary voltage source according to the power supply module of the
protection relay. Select the correct auxiliary voltage source according to the power supply
module of the protection relay.
1MAC059074-MB A
615 series ANSI
Technical Manual