Basler Electric BE1-87T - Manual (Page 60)

4-18 BE1-87T Installation 9171300990 Rev V
Step 2. Withdraw the cradle assembly (see Figure 4-19).
Step 3. Remove the four screws that attach the front panel to the cradle assembly, and remove the
front panel.
Step 4. With a slight side-to-side rocking motion, withdraw Analog Board #1.
Figure 4-20. Side View of Cradle Assembly
Disabling Unused Inputs
To eliminate the possibility of a spurious input from induced currents within the relay, special internal
jumpers have been provided to disable any inputs that are not connected to CT wires.
CAUTION
Disabling unused inputs requires disassembly of the relay and must be done
when the relay has been taken out of service. Access to the input-disabling
jumpers requires the removal of the Analog #1 Board, shown in Figure 4-19.
To avoid personal injury or equipment damage, do NOT proceed unless
thoroughly familiar with the instructions in sections Relay Operating
Precautions and Relay Disassembly: Precautions.
MOTHERBOARD
FRONT
PANEL
FRONT
PANEL
MOTHERBOARD
SINGLE-PHASE THREE-PHASE
ANALOG BOARD #1
POWER SUPPLY
POWER SUPPLY
ANALOG BOARD #2
ANALOG BOARD #1
ANALOG BOARD #1
ANALOG BOARD #1
ANALOG BOARD #2
UPPER SWITCH BOARD
LOWER SWITCH BOARD
UPPER SWITCH BOARD
LOWER SWITCH BOARD
D638-003
2-23-93
BE1-87T
0 A
0 B
0 C