GE Multilin D30 Line Distance Relay 3-333 HARDWARE 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS31. Remove the C37.94 module (76 or 77):The ejector/inserter clips located at the top and at the bottom of each module, must be pulled simultaneously in orderto release the module for removal. Before performing this action, control power must be removed from the relay.The original location of the module should be recorded to help ensure that the same or replacement module is insertedinto the correct slot.2. Remove the module cover screw.3. Remove the top cover by sliding it towards the rear and then lift it upwards.4. Set the Timing Selection Switches (Channel 1, Channel 2) to the desired timing modes (see description above).5. Replace the top cover and the cover screw.6. Re-insert the C37.94 module Take care to ensure that the correct module type is inserted into the correct slot posi-tion. The ejector/inserter clips located at the top and at the bottom of each module must be in the disengaged positionas the module is smoothly inserted into the slot. Once the clips have cleared the raised edge of the chassis, engagethe clips simultaneously. When the clips have locked into position, the module will be fully inserted.Figure 3–41: IEEE C37.94 TIMING SELECTION SWITCH SETTING
