1MRK 511 434-UEN A
Section 4
Commissioning SAM600
SAM600 Process Bus I/O System
41
Operation Manual
Use the approved SFP module and fiber optic cables with LC connectors in order
to establish a communication connection with bay level protection and control
devices.
If SAM600 modules are deployed in marshalling kiosks close to the primary
equipment in the field, fiber optic patch panels are recommended to terminate the
rugged outdoor cable at the entry of the marshalling kiosk and use more flexible
optical cable for internal connections. Verify electrical and communication
connections
After installation, verify that SAM600 modules are correctly connected to the other
parts of the protection system. This is done with SAM600 modules and all
connected circuits de-energized.
Verifying VT circuits
Check that the wiring is in strict accordance with the supplied
connection diagram. Correct possible errors before continuing to the
test circuitry.
Execute the following steps for testing 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 phase relationships. The
check must be performed as close to the SAM600 module as possible.
The primary injection test verifies the VT ratio and the wiring all the way from the
primary system to the SAM600 module. 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.
Verifying CT circuits
Check that the wiring is in strict accordance with the supplied
connection diagram. Correct possible errors before continuing to the
test circuitry.
The CTs must be connected in accordance with the circuit diagram provided with
SAM600-CT, both with regards to phases and polarity. The following tests shall be
performed on every primary CT connected to SAM600-CT: