EasyManuals Logo

ABB RET670 Commissioning Manual

ABB RET670
328 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #146 background imageLoading...
Page #146 background image
Table 31: Test points for phase-to-ground C-G (Ohm/Loop)
Test point Reach Value Comments
1 X (2 x X1
set
+X0
set
)/3
R 0
2 X (2 x X1
set
+ X0
set
)/3
R 2 x R1
set
+ R0
set
)/3
3 X 0.8 x (2 x X1
set
+ X0
set
)/3
R 0.8 x (2 x R1
set
+ R0
set
)/3
+RFPGZx
set
4 X 0.5 x (2 x X1
set
+ R0
set
)/3
R 0.5 x (2 x R1
set
+R0
set
)/3 +
RFPGZx
set
5
X 0.85 x RFPGZx
set
x tan(LdAngle
set
) LdAngle = angle for the maximal load
transfer
R 0.85 x RFPGZx
6 X RLdFwdset x tan(LdAngleSet)
R RLdFwd
set
7 X 0
R RLdFwd
set
8 X –02143 x RLdFwd
set
Exact: 0.8 x RFPGZx x tan (ArgDir=20°)
R 0.8 x RLdFwd
set
9 X –0.8 x RLdFwd
set
x tan(ArgDir=20°)
R 0.8 x RLdFwd
set
10 X 0.17 x (2 x X1
set
+ X0
set
) Exact: 0.5 x (2 x X1
set
X0
set
)/3
R -0.36 x (2 x X1
set
+ X0
set
) Exact: 0.5 x (2X1
set
+ X0
set
)/(3 x
tan(AgNegDir=30°)
11 X 0.27 x (2 x X1
set
+X0
set
) Exact: 0.8 x (2 x X1
set
+ X0
set
)/3
R –0.57 x (2 x X1
set
+ X0
set
) Exact: 0.8 x (2X1
set
+ X0
set
)/(3 x
tan(AgNegDir=30°)
12 X 0.5 x (2 x X1
set
+ X0
set
)/3
R 0.5 x (2 x R1
set
+ R0
set
)/3
13 X 0
R
11.4.8.1 Measuring the operating limit of set values
Procedure:
Section 11 1MRK 504 165-UUS -
Testing functionality by secondary injection
140 Transformer protection RET670 2.2 ANSI
Commissioning manual

Table of Contents

Other manuals for ABB RET670

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the ABB RET670 and is the answer not in the manual?

ABB RET670 Specifications

General IconGeneral
Rated Frequency50/60 Hz
InputsAnalog and binary inputs
ApplicationProtection of power systems
Communication ProtocolsIEC 61850, DNP3, Modbus
Operating Temperature Range-25°C to +55°C
MountingRack mounted
Number of Binary InputsUp to 48
Number of Binary Outputs32
Protection FunctionsOvercurrent Protection
OutputsBinary outputs
EnclosureIP 54
TypeLine Differential Protection
Number of Analog Inputs24

Related product manuals