There are several methods.
Caveat: Some numerical relays are not fooled by the smallest step change in values. - make increment steps as small as possible.
Powerswing is characterised by slow three phase Z locus aproaching Z origin.
Powerswing (dz/dt) say to trip on all but Z1: My first try...
Hi 521AB,
The flaw in your logic is the implication that a relay that is innacurate during steady-state tests, will suddenly be accurate during dynamic conditions.
In essence, this is the worth of steady state testing.
If a a relay is innaccurate steady-state, it hasn't got a hope of being...
Typically, I use 5% for static and some digital, 3% on certain digital relays, 7 % on some electromechanicals.
I have had to stretch some starting reaches to 10%, but I use 10% tolerance rarely.
As a rule though I would use 5% as a starting point and let empirical experiance dictate a...
XRIO functionality 101, as I see it:
An XRIO converter can import a data source, possibly from 3rd party software, the relay setting software. The same XRIO converter can also use manually inputed data.
Broadly the XRIO converter manipulates this data into meaningful quantities. That is to say...
Different countries have different conventions. Follow your geographical regions convention to avoid confusion.
On HV CT's the casing is live and is bonded to either P1 or P2 and sometimes selectable.
In this instance, the orientation of a CT with respect to protected plant is important for...
In terms of hardware, I'd be looking for 6 current sources, (the higher the compliance voltage the better) and minimum of four voltages.
Binary inputs should double as oscillographic measuring channels.
In this regard I believe the Doble F6150 pips the CMC 256-6.
However with regards to...
