Inspections Upon Receipt; Inspection Of Features And Ratings; Electrical Check - Siemens SIPROTEC 7SJ62 Instruction Manual

3.2

Inspections Upon Receipt

3.2.1

Inspection of Features and Ratings

Ordering Number
3.2.2

Electrical Check

Power-Up
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7SJ62 Manual
C53000-G1140-C121-1
Verify that the 7SJ62 has the expected features by checking the complete ordering
number with the ordering number codes given in Sub-section A.1 of the Appendix.
Also check that the required and expected accessories are included with the device.
The ordering number of the device is on the nameplate sticker attached to the top of
the case or housing. The nameplate also indicates the current, voltage, and power
supply ratings of the device. A verification that these ratings are the expected values
is especially important. The jumpers for the control voltage of the binary inputs are set
at the factory for a DC control voltage equal to the DC voltage rating of the power sup-
ply. The jumpers can be changed if a different control voltage is to be used.
Operating conditions that meet VDE 0100/5.73 and VDE 0105 Part 1/7.83, or national
and international standards, are to be observed.
Before applying power supply voltage or measuring quantities for the first time, be
sure the device has been in the operating area for at least two hours. This time period
allows the device to attain temperature equilibrium, and prevents dampness and con-
densation from occurring.
Warning!
The following inspection steps are done in the presence of dangerous voltages. Only
appropriately qualified personnel familiar with and adhering to safety requirements
and precautionary measures shall perform these steps.
Ensuring safe grounding and applying power supply voltage are sufficient for a first
electrical inspection of the device.
Connect the ground of the device to the ground of the location. The ground of a 7SJ62
designed for flush-mounting is on the back panel. The ground of a device designed for
surface-mounting is on the terminal with the grounding symbol.
With the protective switches (e.g. test switches, fuses, or miniature circuit breakers)
for the power supply open, prepare the connections to the power supply. Verify that
the power supply voltage has the correct magnitude. Check polarity connections to the
device inputs. Follow the appropriate connection diagram in the Appendix, Section
A.2.
Close the protective switches to apply the power supply.
The green "RUN" LED on the front panel must light after no more than 0.5 second, and
the red "ERROR" LED must go out after no more than 10 seconds.
Initial Inspections
3-3