Hello
Step-down transformer (20kv /6.6KV ) 22MVA CT ration 2000/1, was tripped by (Sepam 2000) differential Protection Unit .
I've measured the Transformer insulation resistance for both primary and secondary side ,all results was great 7 G-ohm.
I've primary injected current in CTs ,all CT...
Dear all experts
we are swapping a step-up power transformer of (35MVA 11kv/20kv) that has been defected due to low winding Insulation , but we are facing:
The old Transformer is provided with CT in side the primary winding of the Oil Transformer connected
to relay 87T (SEPAM 2000) but...
hello
we have got multi function protection relay (SEPAM) I need to test saturation point of the core balance current transformer using current injector, what is the procedure
hello for all
Our step up power Transformer 11kv\20kv 35M va was defected due to low winding Insulation resistance
Now we are swapping a spare transformer to be fixed , but while testing the insulation resistance of 20kv calble it gives:
L1 24 G-ohm
L2 31 G-ohm
L3 1.6 G-ohm
Does it mean cable...
hello
An electrical oil transformer of 35KVA step up 11KV/20KV has tripped by
-bucholoz relay -differentiation protection -50N
An Insulation test for windings gave : 170 Kohm in sec / 4Mohm in primary
Oil Dielectric test tripped in 13KV..
after oil regeneration done :
Oil Dielectric test now...
Hello
If you have got a 3phase generator and you've used it to supply a single phase load (you can not share the 1ph load into the 3 generator phases )
can you get the maximum power out of the generator or you can get 1/3 of full KVA ?
