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ABB
Transformer protection RET650
Product version: 1.1
Dimensions
Table 60. Dimensions
Description
Width
Height
Depth
Weight box
Weight LHMI
Inverse time characteristics
Table 61. ANSI Inverse time characteristics
Function
Operating characteristic:
æ
ö
A
ç
÷
=
+
×
t
B
k
(
)
ç
÷
P
-
è
I
1
ø
EQUATION1249-SMALL V1 EN
I = I
/I
measured
set
ANSI Extremely Inverse
ANSI Very inverse
ANSI Normal Inverse
ANSI Moderately Inverse
ANSI Long Time Extremely
Inverse
ANSI Long Time Very Inverse
ANSI Long Time Inverse
Value
220 mm
265.9 mm (6U)
249.5 mm
<10 kg (6U)
1.3 kg (6U)
Range or value
k = (0.05-999) in steps of 0.01
unless otherwise stated
A=28.2, B=0.1217, P=2.0
A=19.61, B=0.491, P=2.0
A=0.0086, B=0.0185, P=0.02, tr=0.46
A=0.0515, B=0.1140, P=0.02
A=64.07, B=0.250, P=2.0
A=28.55, B=0.712, P=2.0
k=(0.05-999) in steps of 0.01
A=0.086, B=0.185, P=0.02
1MRK 504 127-BEN -
Issued: February 2011
Accuracy
-
ANSI/IEEE C37.112,
class 5 + 40 ms
69
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