GROUP BUTTON RELAY CIRCUIT - PART 9

GROUP BUTTON RELAY CIRCUIT

NWWNR (Normal Common Point Button Relay)

- When NWWN button is pressed , NWWNR is energised provided SMR is in picked up condition and RWWNR is in droped condition .

- When NWWNR relays are energized, thenn WNCR relay is dropped.

RWWNR

- When RWWN- Pressed , RWWNR- energized, Provided SMR (↑), NWWNR(↓).

- When RWWNR - Energized, then WNCR (↓)


GBNR

- When GBN- Pressed , GBNR- energized, Provided SMR (↑).

GRNR

- When GRR- Pressed , GRNR- energized, Provided SMR (↑).

EOVNR

- EOVR: Pressed, EOVNR: Energized , Provided SMR(↑) condition.


EWNR

- EWWN  : Pressed, EWWNR: Energized , Provided SMR(↑) condition.

EGGNR

- When EGGN- Pressed, EGGNR- Energised. 
- Whenever it is required to put back a signal to ON position during emergency , it can be done by pressing the signal button concerned alone with the EGGN button, as SM controlling relay front contact is not provided in both the circuits.


EUYNR

- EUYR: Pressed, EUYNR: Energized , Provided SMR(↑) condition.

CH1NR

- When CH1N- Pressed, CH1NR- Energized, Provided 

1. SMR (↑), GNCR(↑), UNCR(↑).
2. No point Button is pressed.
3. No Siding Button is Pressed

CH2NR

When CH2N- Pressed, CH1NR- Energized, Provided 

1. SMR (↑), GNCR(↑), UNCR(↑).
2. No point Button is pressed.
3. No Siding Button is Pressed

G-31 LCNR

- When LXN - Pressed, LXNR - Energized, Provided 

1. SMR (↑), GNCR(↑), UNCR(↑).
2. No point Button is pressed.
3. No CH Button is pressed.
4. No Siding Button is Pressed