BATTERY TESTING

1.Don't short the battery bank +ve and -ve in same battery or total bank.

2.IF 2 volt battery after discharge test the voltage should be 1.75 v or as per data schedule.If less than this value battery should be change.

3.The individual can't test in the site level.Each cell as 2 volts and it can't drive more current and total discharge time will take more time.New replacing batteries should test with total batter bank.

4.The discharge test load current will calculate by Load Vs Time chat available in battery bank manual.

GIS GAS FILLING

The Gas monitor pressure Gauge used in GIS is Designed to show the reading as pressure readings convert to 20 Dec temperature.

When ever fill the gas in GIS connect one Digital Gauge parallel with Analog gauge which is show the reading with normal room temperature reference.

BUSBAR PROTECTION TRIP

1.In transformer feeder busbar protection will operate both the High side breaker and
lower side breaker

2.BF stage -1 and BB protection will initiate TC1 & TC2 of all breakers.

MICOM 142 DOCR TRIPPING CONDITION

Relay will trip single phase faults reference with other phase voltage

For three phase fault relay will take last one min memorised RYB voltage.

If one hour maintenance shout down memory voltage will errised then any bady switch on the CB with three fault there is no voltage in memory and relay will not operate for this fault.But in Line protection relay SOTF will operate.

RED 500 to DTR CONNECTION

RED 500 to DTR RJ pin connection (1 2 3 4 5 6) to ( 3 6 1 4 5 2 )