ISOLATIOR STATUS REB 500

 

For REB 500 ABB relay isolstor status contact should be Early make and late breake

 

 

 

 

 

GENERATOR FOR BATTERY CHARGER

1. Generator for Battery charger commissioning should be more then 220KVA

2. Normally generators are Thyristor control and voltage will regulate according with load .

3. Battery chargers contain RLC circuit and it will rise the generator voltage abnormal value.

4. Connect some external lighting loads rather then battery charger to avoid this abnormal condition.

RESISTORS & DIODES & CAPACITORS

POWER TRANSFORMER ERECTION

115kv 67MVA Transformer

1.Erection takes total 8 days with 15 man power
2.Vaccuming of main tank take 3 days upto  -0.5tar
3.Oil circulation 3 days
4.Oil Filling and setteling 1 days

=8+3+3+1=15 days / Transformer  

SAS GIS EQUIPMENT OPERATION

As per SEC requirement the GIS operations ( Open /Close) should be like below.

GIS Local Cubicle Control panel contain one multi position switch
There are four position available

1.Emergency

All operation should be in LCC panel Open/close switches

2.Local

All operation should be through Bay Control relay mounted in LCC panel

Its checks all hoard wire interlock and BCU software interlock

3. Remote

All operation from HMI and SCADA

4. OFF

There is no operation from any where.