3. USER INTERFACE PANEL
3.1. Construction
Panel consists of 8 sections as below; y Operation section
y Local control section y Fault indication section y Voltage elements section y Sequence status section y System diagnostic section y Battery test section y Menu control section
3.1.1. Operation Section
OPENPressing OPEN push-button sends a trip signal to the Recloser.
CLOSE
Pressing CLOSE push-button sends a close signal to the Recloser.
Units operating with firmware version 2.18 or later have a feature of Close Time Delay. The Close Time Delay allows a delay of 0.00 to 600.00 seconds after pressing the close push-button before closing the recloser.
POSITION LED
Indicates the position of the Recloser. Position indicator is based on the Recloser 52a contacts.
3.1.2. Local Control Section
All indicators show status of Control function. The indicators are continuously ON when the control function is enabled and the indicators are continuously OFF when control function is DISABLE. The push-button toggles Enable/Disable.
PROTECTION ENABLED
All Protection elements are enabled
GROUND ENABLED
Ground Protection elements are enabled
SEF ENABLED
SEF Protection elements are disabled
RECLOSE ENABLED
Reclose function is enabled
CONTROL LOCKED
Front panel function is unlocked
REMOTE ENABLED
Remote control is enabled
ALTERNATE SETTINGS
Alternate setting is disabled Primary Setting is enabled
PROGRAM 1
Program 1 function is disabled
PROGRAM 2
Program 2 function is disabled
HOT LINE TAG
Hot Line Tag function is disabled
Protection Enabled
When illuminated, all protection elements are enabled. The protection enabled condition can be disabled by pressing the Protection Enabled push button on the front panel. The front panel LED will illuminate on each source of all protection enabling.
NOTE : Although all protection elements are enabled, ground protection elements and SEF element are operated individually.
Ground Enabled
When Ground Enable LED is ON, the ground over-current elements are enabled. The enabled Ground can be disabled by pressing the Ground Enabled push-button on the front panel.
SEF Enabled
When SEF Enable LED is on, the Sensitive Earth Fault(SEF) element is enabled. The enabled SEF can be disabled by pressing the SEF Enabled push-button on the front panel.
Reclose Enabled
When Reclose Enable LED is on, the reclose(79) element is enabled. The enabled reclose element can be disabled by pressing the Recloser Enabled push-button on the front panel.
Control Locked
When Control Locked LED is on, all functions in operation section and all functions in Local control section are locked. These can be unlocked by pressing the Control Locked push-button on the front panel.
NOTE : Even though Control Locked function is locked, OPEN, Lamp Test, Battery Load Test and menu control section can be normally operated.
Remote Enabled
When Remote Enabled LED is on, all remote control functions (e.g. SCADA system) are enabled. This can be disabled by pressing the Remote Enabled push-button on the front panel. SCADA control refers to supported communications protocol such as DNP3.0.
Alternate Enabled
When Alternate Enabled LED is on, the Alternate setting is activated. When Alternate Enabled LED is off, the primary setting is activated.
Program 1
A function installed in Program1 is operated when Program1 LED is On. Depending on user’s request, Manufacturer sets a function in Program1.
Program 2
A function installed in Program2 is operated when Program2 LED is On. Depending on user’s request, Manufacturer sets a function in Program2.
Hot Line Tag
When Hot Line Tag LED is on, the Hot Line Tag function is enabled.
3.1.3. Fault Indication Section
Indicates current on the phase or neutral lines is above the minimum pickup setting as programmed in any of the EVRC2A over-current elements.
y Phase Instantaneous over-current Elements y Phase Time over-current Elements
y Phase Definite Time High Current Lockout Element y Ground Instantaneous over-current Elements y Ground Time over-current Elements
y Ground Definite Time High Current Lockout Element y Sensitive Ground Time Over-current Elements y Negative Instantaneous over-current Elements y Negative Time over-current Elements
y Negative Definite Time High Current Lockout Element
y Phase, Neutral, Ground, Sensitive Ground, and Negative Sequence Directional Control
TRIP TYPE
y INST : Shows high current trip (50-1) y DELAY : Shows delay trip(51)
y HIGH CURR’ : Shows high current lockout(50-2)
FAULT INDICATION
y A, B, C : Indicates an over-current fault has occurred on one of the phase lines y G : Indicates an over-current fault has occurred on the neutral line
y SEF : Indicates a sensitive earth fault has occurred on the neutral line y FI RESET : Reset fault indication/Lamp test
3.1.4. Voltage Elements Section
Indicates that voltage pickup element is operated. y Two Under voltage Elements
y Two Over voltage Elements y Synchronism Element
y Under/Over frequency Element
27 : Under voltage pickup 59 : Over voltage pickup 25 : Synchronism check pickup 81 : Under/Over frequency pickup
3.1.5. Sequence Status Section
Indicates the current status of programmed sequence procedure.
RESET : Sequence shows resetting
CYCLE : Sequence shows running
LOCKOUT : Sequence shows lockout
Figure 3-6. Sequence Status Section
3.1.6. System Diagnostic Section
Indicates Diagnostic status of the EVRC2A. Control run indicates (green) the EVRC2A has successfully passed its internal diagnostic test. Self Check (Red) indicates the EVRC2A has failed in its internal diagnostic test.
CONTROL RUN
Status of EVRC2A systems shows normal
SELF CHECK
Status of EVRC2A systems shows warning
Figure 3-7. System Diagnostic Section
3.1.7. Battery Test Section
Indicates the system power status of the EVRC2A. AC supply indicates the EVRC2A has external power source. Charge indicates the EVRC2A is charging Battery. Discharge indicates the EVRC2A has failed in battery load testing.
AC SUPPLY
Status of supplying the external AC power.
CHARGE
Status of charging the battery.
DISCHARGE
Status of discharged battery.
Figure 3-8. Battery Test Section
BATTERY LOAD TEST
Push-button for battery load test.
LCD displays during Battery Load Testing.
LOAD(V) : On Test, Battery is disconnected from the Figure 3-9. Battery Test Mode
charge circuit and connect the battery with load resistor and check the battery. Load resistor shall be connected with AC supply.
CHARGE[V] : Display the voltage of charge circuit. STATUS : Display Battery status and charge circuit status.
- B-OK : When the battery voltage is between 21V ~ 28V - B-HI : When the battery voltage is over 28V
- B-DF : When the battery voltage is between 15V ~ 21V - B-LO : When the battery voltage is below 15V
- C-OK : When the charge circuit is between 25V ~29V - C-HI : When the charge circuit is over 29V
- C-LO : When the charge circuit is below 25V
NOTE : All information above is provided by remote mode.
[BATTERY TEST MODE] LOAD(V) : 25.00 CHARGE(V): 26.50 STATUS : B-OK C-OK
3.1.8. Menu Control Section
The Liquid Crystal Display (LCD) of the EVRC2A displays four lines of twenty characters each.
LCD DISPLAY
4x20 Characters display
CONTROL KEYS [▲] [▼] [◀] [▶]
Arrow keys are used for moving through the menu window and the changing of the setting value
[▲] (METER) : Up arrow key is used to move to the meter menu, operable in menu starting mode [▼] (AWAKE) : Down arrow key is used for panel awake from sleep mode
[◀] (EVENT) : Left arrow key is used to move to the event menu, operable in menu starting mode [▶] (SET) : Right arrow key is used to move to the setting menu, operable in menu starting mode [FUN] : To move to main menu when present mode is in starting mode
[ESC] : To cancel for data input mode or return the display to the previous level [ENT] : To select sub menu or data input
[FUN] Key
Press [FUN] key to enter Main menu for displaying information or changing settings. [FUN] key is also used to display a help message in setting change mode and to cancel the help message display.
[ESC] Key
The ESC key can be used to cancel data input mode and return to the previous menu.
[ENT] Key
ENT key is used to select a menu by using Up and Down arrow key. Enter key is also used to accept a new setting by using Up or down arrow key.
[◀] [▶] Key
Use the left and right arrow keys to move cursor in the data input mode and change display message.
[▲] [▼] Key
Use Up and Down arrow keys to move through the various menus and to decrease or increase value in the data input mode.
PORT1
PORT1 is the port to communicate whit an Interface Software. Communication frame between EVRC2A and a master can be monitored and saved by using “DNP Frame Monitor” menu of the Interface Software.