GE B30 Instruction Manual page 61

3 HARDWARE 3.1 DESCRIPTION
The relay follows a convention with respect to terminal number assignments which are three characters long assigned in
order by module slot position, row number, and column letter. Two-slot wide modules take their slot designation from the
first slot position (nearest to CPU module) which is indicated by an arrow marker on the terminal block. See the following
figure for an example of rear terminal assignments.
3
Figure 3–11: EXAMPLE OF MODULES IN F AND H SLOTS
The torque used to connect the terminal blocks to the back of the relay chassis (screws a, b, c shown) is 9 inch-pounds. For
the connections to the terminal blocks (rows 1 to 8), use a minimum of 17 inch-pounds. During manufacturing, the power
supply and CPU modules are installed in slots B and D of the chassis with 13 inch-pounds of torque on the screws at the
top and bottom of the modules.
GE Multilin B30 Bus Differential System 3-9