Thytronic NA11 User Manual

33
NA11 - Manual - 02 - 2009
FUNCTION CHARACTERISTICS
Conventions
Phase rotation direction
The conventional rotation direction for the current phasors is counter-clockwise.
Cyclic phase sequence order
For three phase rotating currents, a direct cyclic sequence is defi ned when the three phases are
L1, L2, L3 ordered, while an inverse cyclic sequence is defi ned when the three phases are L1, L3, L2
ordered..
fasori.ai fasori.ai
fasori1.ai
I
L1
I
L3
I
L2
I
L1
I
L2
I
L3
Direct sequence cyclic order Inverse sequence cyclic order
fasori1.ai
I
L1
I
L3
I
L2
I
L1
I
L2
I
L3
Direct sequence cyclic order Inverse sequence cyclic order

Thytronic NA11 Specifications

General

Brand	Thytronic
Model	NA11
Category	Relays
Language	English