380 KV GIS THOSHIBA

INTER LOCK FOR CIRCUIT BREAKER (GAS & HYDRAULIC OIL)

1. For tripping operation the HYDRAULIC OIL pressure must be 25.5 MPa and GIS gas pressure of the CB compartment should be 0.7 MPa . Breaker failure should be initiates If CB is failure to trip condition.

2. For closing operation the HYDRAULIC OIL pressure must be 27 MPa and GIS gas pressure of the CB compartment should be 0.725 MPa .

3. Normal condition Gas pressure CB 0.75 MPa, Gas pressure other compartment 0.6 MPa, Hydraulic Oil pressure 31.5 MPa

380kV CT-VT-Calculation

CT & VT CALCULATION OF 380KV SUBSTATION

DOWNLOAD FROM HERE

KVS100 SYN RELAY CB INPUT

How to give CB input to KVAS100 SYN check relay to start the syn check function ?

LOGIC FUNCTION ----------- SCHEME Fn Links-1 -------- set 000000000100011

INPUT Start chsyn ------------00000001

48 DC voltage available in relay

Take +ve voltage connect with CB "b" contact (NC)

When CB is open relay will start the Syn function give permit to close the CB

Relay will reset when CB is closed.

FIBER OPTIC CABLES

FIBER OPTIC CABLES USED FOR LINE DIFFERENTIAL AND DRP PANEL

MAKE: OPTOKON CO . LTD

MULTIDUPLEX

J-V (ZN) H 2G 62.5/125 BLUE (2.8 mm) (850 nM)

PATCH CORD TERMINATION

TESTING TIPS -2

Voltage for fuse failure relay should take at final stage of the voltage circuit.

It will block the operation of the main relay if any open wiring and faultily FT switch open operations.