ABB RES670 Product Manual page 54

Phasor measurement unit RES670 ANSI
Customized
Product version: 1.2
Table 68. RI and RD type inverse time characteristics
Function
RI type inverse characteristic
1
= ×
t td
0.236
-
0.339
I
EQUATION1656 V1 EN
I = I /I
measured set
RD type logarithmic inverse characteristic
æ ö
I
- ç × ÷
= 5.8 1.35 In
t
è ø
td
EQUATION1657 V1 EN
I = I /I
measured set
Table 69. Inverse time characteristics for overvoltage protection
Function
Type A curve:
td
=
t
æ ö
-
V VPickup
ç ÷
è ø
VPickup
EQUATION1661 V1 EN
V = V
measured
Type B curve:
×
td 480
=
t
æ ö
-
V VPickup
× -
ç 32 0.5 ÷
è ø
VPickup
EQUATION1662 V1 EN
Type C curve:
×
td 480
=
t
æ ö
-
V VPickup
× -
ç ÷
32 0.5
è ø
VPickup
EQUATION1663 V1 EN
Programmable curve:
×
td A
=
t
P
æ ö
-
V VPickup
ç × - ÷
B C
è ø
VPickup
EQUATION1664 V1 EN
54
Range or value
td = (0.05-999) in steps of 0.01
td = (0.05-999) in steps of 0.01
Range or value
td = (0.05-1.10) in steps of 0.01
td = (0.05-1.10) in steps of 0.01
2.0
-
0.035
td = (0.05-1.10) in steps of 0.01
3.0
-
0.035
td = (0.05-1.10) in steps of 0.01
A = (0.005-200.000) in steps of 0.001
B = (0.50-100.00) in steps of 0.01
+
D
C = (0.0-1.0) in steps of 0.1
D = (0.000-60.000) in steps of 0.001
P = (0.000-3.000) in steps of 0.001
1MRK511254-BUS B
Accuracy
IEC 60255-151, 5% + 40
ms
Accuracy
5% +40 ms
ABB