ABB RET670 Commissioning Manual page 129

1MRK 504 154-UUS B
Note that these values identify a point inside the lens characteristic, in the zone 2, that is close
to the point RE. The START is issued, but no TRIP is performed.
Execution of the dynamic test
The test may be performed by using two states of a sequence tool that is a basic feature of test
sets.
• State 1: pre-test condition.
Steady voltage and current are applied in order to get a steady high impedance, that is, a
point in the plane R-X which is far away from the lens characteristic. Define the following
three-phase symmetrical quantities (the phase angle is related to phase L1):
V
=
ts
EQUATION14063 V1 EN-US
V
∠
ts
EQUATION14058 V1 EN-US
frequency of V
I
50s
I = 0 A
tfs
• State 2: main test step.
Define the following three-phase symmetrical quantities (the phase angle is related to phase
L1):
V
=
ts
EQUATION14063 V1 EN-US
V
∠
ts
EQUATION14058 V1 EN-US
frequency of V
I
50 s
EQUATION14059 V1 EN-US
∠I
50s
frequency of I
It
fs
EQUATION14062 V1 EN-US
∠I
tfs
frequency of I
Commissioning manual
V
VT s ,
0 9 . V 0 9 11931 .
× × = ×
t FwdZ ,
V
VT p ,
ForwardX
 
arctan arctan
=  =

ForwardR
 
= 50 Hz
ts
= 0 A
V
VT s ,
0 9 . V 0 9 11931 .
× × = ×
t FwdZ ,
V
VT p ,
ForwardX
 
arctan arctan
=  =

ForwardR
 
= 50 Hz
ts
I 1
CTs
I 10459
= × = ×
50
I 9000
CTp
= 0º
= 50 Hz
50s
I 1
I CTs 10459
= × = ×
tf
I 9000
CTp
= 180º
= 49.5 Hz
tfs
0 1 .
77 81 . V
× =
13 8 .
59 33 .
 
82. . 14°
 =

8 19 .
 
0 1 .
77 81 . V
× =
13 8 .
59 33 .
 
82. . 14°
 =

8 19 .
 
= . 1 162 A
1 162 . A
=
Testing functionality by secondary injection
GUID-028D7D67-B61A-4A7F-9978-4A0A41231B04 v1
(Equation 31)
(Equation 32)
(Equation 33)
(Equation 34)
(Equation 35)
(Equation 36)
Section 10
123