Transducer Inputs/Outputs - GE UR F35 Series Instruction Manual

3.2 WIRING
The auto-burnish circuitry has an internal fuse for safety purposes. During regular maintenance, check the auto-
burnish functionality using an oscilloscope.
NOTE
Transducer input modules can receive input signals from external DCmA output transducers (dcmA In) or resistance tem-
perature detectors (RTDs). Hardware and software are provided to receive signals from these external transducers and
convert these signals into a digital format for use as required.
Transducer output modules provide DC current outputs in several standard DCmA ranges. Software is provided to config-
ure virtually any analog quantity used in the relay to drive the analog outputs.
Every transducer input/output module has a total of 24 terminal connections. These connections are arranged as three ter-
minals per row with a total of eight rows. A given row can be used for either inputs or outputs, with terminals in column "a"
3
having positive polarity and terminals in column "c" having negative polarity. Since an entire row is used for a single input/
output channel, the name of the channel is assigned using the module slot position and row number.
Each module also requires that a connection from an external ground bus be made to terminal 8b. The current outputs
require a twisted-pair shielded cable, where the shield is grounded at one end only. The following figure illustrates the trans-
ducer module types (5A, 5C, 5D, 5E, and 5F) and channel arrangements that can be ordered for the relay.
Wherever a tilde "~" symbol appears, substitute with the slot position of the module.
NOTE
The following figure show how to connect RTDs.
3-20
Figure 3–20: TRANSDUCER INPUT/OUTPUT MODULE WIRING
F35 Multiple Feeder Protection System
3 HARDWARE

3.2.7 TRANSDUCER INPUTS/OUTPUTS

GE Multilin