Settings; Settings Structure - GE GEK-106273L Instruction Manual

5. SETTINGS

5.1

SETTINGS STRUCTURE

All the settings of the MIF relay, together with the procedure to change their value, are described in this chapter. First
of all, a complete list of settings is shown, including ranges, units, step and factory default value. Then, the settings
requiring more detailed comments are individually explained.
The MIF relay provides two settings tables (table 2 is accessible in the ADVANCED SETTINGS group), stored in
E2PROM memory (permanent memory). Using a setting or through a communications command (or through a digital
input in models with OPTION 1 or 2), it is possible to select which table is active, and then used by the relay
protection algorithms.
Settings can be accessed and modified either using the relay faceplate keypad, or using a computer connected to the
relay through any of the relay communications ports, and the ENERVISTA MII SETUP program. The use of the
keypad to modify settings is described in chapter 6. If the computer is used to handle the settings, the following steps
must be considered:
1. Make sure your communication cable matches the scheme shown in figure 3.9.
2. Connect the communications cable between the relay (or modem) and the computer serial port.
3. Run the ENERVISTA MII SETUP program. The procedure to install and use the ENERVISTA MII SETUP program
is described in section 1.2.2. SOFTWARE INSTALLATION and in section 4. HUMAN INTERFACE.
4. Make sure that the communications parameters in the relay match the ENERVISTA MII SETUP configuration
settings. The communications parameters shown in the relay faceplate display, within the configuration menu are:
- COMMUNICATION SPEED
- PASSWORD (please refer to section 4.1.5.)
- RELAY NUMBER
For instructions on how to check and modify ENERVISTA MII SETUP program communications parameters please
refer to chapter 4. HUMAN INTERFACE.
Check that the relay number and password in the MIF display match the numbers entered in the dialog window of the
ENERVISTA MII SETUP, after clicking on Relay Connection.
CT transformation ratio settings allow to view the current measures in primary line values.
Examples of setting:
Phase Current Transformer: 300/5
Neutral Current Transformer: 100/2
GEK-106273L
PRODUCT DESCRIPTION
CT PH Setting: 60
CT N Setting: 100
MIF Digital Feeder Protection 5-27