GE T60

5-116 T60 Transformer Protection System GE Multilin
5.4 SYSTEM SETUP 5 SETTINGS
5
In our example, the following phase and zero-sequence compensation equations would be used:
For Winding 1:
;; (EQ 5.16)
For Winding 2:
;; (EQ 5.17)
g) MAGNITUDE, PHASE ANGLE, AND ZERO SEQUENCE COMPENSATION
Complete magnitude, phase angle, and zero sequence compensation is as follows:
(EQ 5.18)
(EQ 5.19)
(EQ 5.20)
where: , , and = magnitude, phase and zero sequence compensated winding w phase currents
= magnitude compensation factor for winding w (see previous sections)
, , and = phase and zero sequence compensated winding w phase currents (see earlier)
240° lag
270° lag
300° lag
330° lag
Table 5–13: PHASE AND ZERO SEQUENCE COMPENSATION FOR TYPICAL VALUES OF 
comp

comp
[w] Grounding[w] = “Not within zone” Grounding[w] = “Within zone”
I
A
p
w I
C
w=
I
B
p
w I
A
w=
I
C
p
w I
B
w=
I
A
p
w
2
3
---
I
C
w
1
3
---
I
A
w–
1
3
---
I
B
w–=
I
B
p
w
2
3
---
I
A
w
1
3
---
I
B
w–
1
3
---
I
C
w–=
I
C
p
w
2
3
---
I
B
w
1
3
---
I
A
w–
1
3
---
I
C
w–=
I
A
p
w
1
3
-------
I
C
w
1
3
-------
I
B
w–=
I
B
p
w
1
3
-------
I
A
w
1
3
-------
I
C
w–=
I
C
p
w
1
3
-------
I
B
w
1
3
-------
I
A
w–=
I
A
p
w
1
3
-------
I
C
w
1
3
-------
I
B
w–=
I
B
p
w
1
3
-------
I
A
w
1
3
-------
I
C
w–=
I
C
p
w
1
3
-------
I
B
w
1
3
-------
I
A
w–=
I
A
p
w I
B
w–=
I
B
p
w I
C
w–=
I
C
p
w I
A
w–=
I
A
p
w
2
3
---
I
B
w–
1
3
---
I
A
w
1
3
---
I
C
w++=
I
B
p
w
2
3
---
I
C
w–
1
3
---
I
A
w
1
3
---
I
B
w++=
I
C
p
w
2
3
---
I
A
w–
1
3
---
I
B
w
1
3
---
I
C
w++=
I
A
p
w
1
3
-------
I
A
w
1
3
-------
I
B
w–=
I
B
p
w
1
3
-------
I
B
w
1
3
-------
I
C
w–=
I
C
p
w
1
3
-------
I
C
w
1
3
-------
I
A
w–=
I
A
p
w
1
3
-------
I
A
w
1
3
-------
I
B
w–=
I
B
p
w
1
3
-------
I
B
w
1
3
-------
I
C
w–=
I
C
p
w
1
3
-------
I
C
w
1
3
-------
I
A
w–=
I
A
p
1
2
3
---
I
A
1
1
3
---
I
B
1–
1
3
---
I
C
1–=
I
B
p
1
2
3
---
I
B
1
1
3
---
I
A
1–
1
3
---
I
C
1–=
I
C
p
1
2
3
---
I
C
1
1
3
---
I
A
1–
1
3
---
I
B
1–=
I
A
p
w
1
3
-------
I
A
2
1
3
-------
I
B
2–=
I
B
p
w
1
3
-------
I
B
2
1
3
-------
I
C
2–=
I
C
p
w
1
3
-------
I
C
2
1
3
-------
I
A
2–=
I
A
c
w Mw I
A
p
w= , where w 12 w
total
 =
I
B
c
w Mw I
B
p
w= , where w 12 w
total
 =
I
C
c
w Mw I
C
p
w= , where w 12 w
total
 =
I
A
c
w
I
B
c
w
I
C
c
w
Mw
I
A
p
w
I
B
c
w
I
C
c
w