GE LPS-D, Инструкция по эксплуатации

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GE Power Management LPS-D Line Protection System 6-
13
6 FUNCTIONAL TESTS (USER SETTINGS) 6.5 ZONE REACH TESTS
6
The real and imaginary components of Z are given by
The magnitude is then given by:
The settings are:
Z
1
= [________] (Zone magnitude)
Z
n
= [________] (magnitude of Zones 2, 3, and 4)
4. Calculate the impedance angle, øZ , for each zone, where øZ is the phase angle of the expression,
and is given by
The settings are
øZ
1
= [________]° (impedance angle of Zone 1)
øZ
n
= [________]° (impedance angle of Zones 2, 3, and 4)
5. Choose the IT test angle (øI) for the zone:
øI
1
= [________]° (Zone 1)
øI
2
= {________]° (Zone 2)
øI
3
= [________]° (Zone 3)
øI
4
= [________]° (Zone 4)
6. Calculate VNOM for each zone by substituting the values of Z
R
, Z , øZ , and øI into Equation 6–19 or 6–20.
V
NOM 1
= [________] Volts rms (nominal test voltage Zone 1)
V
NOM 2
= [________] Volts rms (nominal test voltage Zone 2)
V
NOM 3
= [________] Volts rms (nominal test voltage Zone 3)
V
NOM 4
= [________] Volts rms (nominal test voltage Zone 4)
If Zone 4 is reversed (Protection Setting 408: Z4DIRECTN = REVERS), remember to add 180°
to both the test angle
øI
4
and the impedance angle øZ
4
.
Z
( )
real
2
3
---
POSSEQANG
( )
cos
K
0
3
------
ZERSEQANG
( )
(eq. 6–21) cos
+ =
Z
( )
imag
2
3
--- POSSEQANG
( )
sin
K
0
3
------ ZERSEQANG
( )
(eq. 6–22) sin + =
Z Z
( )
2
real
Z
( )
2
imag + (eq. 6–23) =
2
3
---
 
 
POSSEQANG
∠
K
0
3
------
 
 
ZERSEQANG
∠
+
∅
Z arc
Z
( )
imag
Z
( )
real
----------------------
 
 
(eq. 6–24) tan
=
NOTE